Contents
  1. Workbook →
  2. Workbook →
  3. Exam heat map
  4. 2026 law switch
  5. The paper
  6. A · Policy
  7. A · Organs
  8. A · Appeals
  9. B · Basis periods
  10. B · Adjusted profit
  11. B · Capital allowances
  12. B · Losses
  13. B · Total profit
  14. B · Gains
  15. B · Investment income
  16. B · Incentives
  17. B · Leases
  18. C · Non-residents
  19. C · Digital
  20. C · Treaties & DTR
  21. C · Transfer pricing
  22. C · BEPS
  23. C · Regional
  24. D · Current issues
  25. E · M&A
  26. E · Planning
  27. E · Practice & audit
  28. F · Oil & gas
  29. F · Mining
  30. Numbers
  31. Penalties
  32. Pitfalls

ICAN Professional Level · C4 Advanced Taxation · 2026 Study Text

Advanced Taxation, read through the examiner's red pen

A reading guide to the 2026 Study Text, built on the Nigeria Tax Act 2025 regime and checked against every Advanced Taxation question, model answer and examiner's report from November 2020 to May 2026. Each topic gives you the rule, the answer format ICAN rewards, what changed on 1 January 2026, and the exact places candidates have lost marks.

12diets of past questions mapped, Nov 2020 – May 2026
12 / 12diets where Question 1 was a company tax computation
8diets in a row with a 20-mark hydrocarbon tax question
11 / 12diets with a capital gains computation
In plain words Rule from the Study Text Examiner's pitfall Exam radar 2026 law (NTA / NTAA) Pre-2026 law (CITA, CGTA, PPTA, IDA)

Companion workbook: eight new-law practice questions with full answers, an add-back drill, flashcards and a theory answer bank. Open the workbook →

Where the marks have been

Exam heat map, 2020 – 2026

Every question of the last twelve diets placed against the topic it tested. Read across a row to see how reliably a topic returns; read down a column to see the shape of a paper. Dark chips are the compulsory question, mid chips are Section B (20 marks), light chips are Section C (15 marks).

Sort topics
Q1 compulsory (30–40 marks)Q3 Section B / optional 20Q6 Section C, 15 marks
What the map says
  • Question 1 is always a company income tax computation, usually across several years of assessment, and four of the last eight were pioneer or post-pioneer companies.
  • Since November 2022 a hydrocarbon tax computation has appeared every single diet as a 20-mark Section B question.
  • A capital gains computation with a Finance Act commentary sits in Section C almost every time.
  • International tax always takes at least one question: DTR, a non-resident computation, a treaty, or transfer pricing.
The single most repeated pitfall

"Inability to identify correctly the allowable and disallowable expenses." It appears in the examiner's report on Question 1 in seven of the last eight diets, and on the hydrocarbon tax question (cost-price-ratio costs) in seven diets. Master Adjusted profit and Oil & gas allowables before anything else.

Read this first

The 2026 law switch

The 2026 Study Text (sixth edition) was rewritten for the Tax Reform Acts and the updated syllabus applies from the November 2026 diet. Every past paper in this guide was set under the old statutes. You can still practise from them, but you must translate each answer into the new law.

Up to 31 December 2025

Companies Income Tax Act (CITA)+ Finance Acts 2019, 2020, 2021, 2023
Capital Gains Tax Act (10%)separate tax on gains
Petroleum Profits Tax ActHT & CIT sat in the PIA 2021
TETFund, NITDA, NASENI, Police Trust Fund leviesfour separate charges on profit
Industrial Development (Income Tax Relief) Actpioneer status tax holidays
FIRS (Establishment) Act 2007FIRS; TAT under its Fifth Schedule

From 1 January 2026

Nigeria Tax Act 2025 (NTA)what is taxed: CIT, chargeable gains, HT & PPT, development levy, incentives, VAT, stamp duty
Nigeria Tax Administration Act 2025 (NTAA)how: returns, assessments, objections, WHT (s.51), refunds, penalties
Nigeria Revenue Service (Establishment) Act 2025the NRS replaces the FIRS
Joint Revenue Board of Nigeria (Establishment) Act 2025JRB, Tax Appeal Tribunal (s.23), Office of the Tax Ombud
Still standingPIA 2021 (licences, royalty, host communities, conversion); Minerals & Mining Act 2007; TP Regulations 2018; CbCR Regulations 2018
Which law do I apply?

Anchor on the basis period or transaction date. Periods and events up to 31 December 2025 follow CITA and the Finance Acts; those from 1 January 2026 follow the NTA. The Study Text's own examples do exactly this: a vehicle bought in 2024 keeps its CITA initial allowance, while one bought in March 2026 goes straight-line under the NTA (Modakeke). The May 2026 model answer still charged tertiary education tax for the 2026 year of assessment because its basis period ended in June 2025.

Expect mixed-period questions

A Question 1 that spans 2024 to 2027 will need two rulebooks: initial and annual allowances then straight-line classes; tertiary education tax then development levy; a separate 10% CGT then gains inside total profit. Label each year with the law you are applying. It earns marks and protects you if the marker reads the transition differently.

IssueCITA / Finance Acts (to 2025)NTA 2025 (from 2026)
Deductibility testWholly, exclusively, necessarily and reasonably (WENR)Wholly and exclusively (s.20)
CIT rates0% ≤ ₦25m turnover; 20% ₦25m–₦100m; 30% ≥ ₦100m0% small company (turnover ≤ ₦100m and fixed assets ≤ ₦250m); 30% all others; 25% when the President so orders
Profit leviesTertiary education tax 2% → 2.5% → 3%; NITDA 1%; NASENI 0.25%; Police Trust Fund 0.005%One development levy: 4% of assessable profit (not for small or non-resident companies)
Floor on taxMinimum tax on gross turnoverMinimum effective tax rate 15% (turnover ≥ ₦50bn or MNE group ≥ €750m)
Capital allowancesInitial + annual; 66⅔% cap except manufacturing/agro; investment allowance to 31 Aug 2023; balancing adjustmentsStraight-line by class (10% / 20% / 25%); no initial allowance, no cap, no balancing adjustments; 1% notional record
Capital gainsSeparate CGT at 10%Chargeable gains added to total profit, taxed at 30%
Change of accounting dateThree-year "higher of old date vs new date"Basis period runs to the new date; notify 30 days before the usual filing date (s.23)
Incentive modelPioneer tax holiday 3 + 2 years (IDA)Economic development tax credit: 5% of QCE a year for 5 years (Tenth Schedule sectors)
Double taxation reliefCommonwealth half-rate relief (s.44) or treaty credit (ss.45–46)Credit for any foreign tax: lower of Nigerian tax on that income and foreign tax paid (ss.120–122)
Tax authorityFIRSNRS (Nigeria Revenue Service)

Format & technique

How the paper is built

Section A · 30 marks

One compulsory question. A company income tax computation over several years (adjusted profit ~7–13 marks, tax liabilities ~11–24 marks) plus 3–6 marks of theory: back duty, pioneer rules, dividend exemptions, interest restriction.

Section B · 2 of 3 × 20

Reliably one petroleum computation. Usually one international question (DTR, non-resident, treaty, TP) and one discussion question.

Section C · 2 of 3 × 15

Capital gains with Finance Act commentary, mining, and discussion topics (ethics, practice, audit, policy, BEPS, ESG).

3 hours 15 minutes including 15 minutes' reading time; answer five of seven. Before November 2021 Question 1 carried 40 marks. Syllabus weights: A Tax administration 5% · B Companies & investment income 35% · C International 20% · D Current issues 10% · E Tax management & planning 10% · F Extractive industries, the balance (20%).

The answer frame ICAN marks
  1. Letterhead or memo heading, date, addressee, RE: line. Marking guides award ½ mark each for heading and introduction.
  2. One-paragraph introduction tied to the brief.
  3. A summary table of results (tax per year of assessment).
  4. Narrative answers to the theory parts, one point per mark.
  5. Appendices: computations with year of assessment and basis period in every heading; workings numbered.
  6. Close with an offer of further clarification and a signature.
Marks hide in the workings
  • Model answers give ½ mark per correctly treated line item. A wrong add-back costs only ½ mark; an omitted one costs the same, so list everything you adjusted.
  • Write the basis period beside each year of assessment. The 2021 and 2024 reports both cite wrong basis periods as the commonest error.
  • For theory, "1 mark per point, maximum n points." Give n + 1 crisp points, not three long paragraphs.
  • Show fiscal price × barrels × exchange rate for every petroleum revenue line.
A

Tax administration

5% · Study Text ch. 1–3

Chapter 1

National Tax Policy 2017 and the canons of taxation

In plain words

A tax policy is the government's stated thinking behind its taxes: what the tax system is for and the principles every tax must respect. Nigeria's is written down in the National Tax Policy 2017, which applies to all three tiers of government. The canons of taxation are the classic tests of a good tax: fair, certain, cheap to collect and convenient to pay. In the exam this topic is theory only: you list and explain principles, objectives and who is responsible for what.

Canons are the qualities of a good tax: equality (ability to pay, with horizontal and vertical equity), certainty (Adam Smith: time, manner and amount known in advance), economy (low collection cost), convenience, productivity (Bastable: a sizeable yield that does not hamper production), elasticity (yield responds to need), simplicity and diversity.

The NTP defines tax as any compulsory payment to government imposed by law without direct benefit or return of value, whatever it is called. Its five objectives: guide the operation and review of the system; provide the basis for future legislation and administration; be a reference point for stakeholders; set benchmarks for accountability; clarify roles and responsibilities.

Seven fundamental features (NTP guiding principles)
  1. Equity and fairness
  2. Simplicity, certainty and clarity
  3. Convenience
  4. Low compliance cost
  5. Low cost of administration
  6. Flexibility
  7. Sustainability

Hook: Every Simple Convenience Lowers Long-run Fiscal Strain. Asked for five in Nov 2023.

Tax system, wealth creation & employment
  • No retroactive tax laws
  • Equal opportunity for local and foreign investors
  • Long-term, tenured investment policy
  • Incentives broad, sector-based, tenured, transparent and reviewed
  • Revenue forgone quantified and reported annually
  • No policy that creates monopoly or entry barriers
StakeholderNTP responsibilities (examined May 2024)
Government (all tiers, arms, MDAs)Implement and regularly review tax policies and laws; publish revenue collected quarterly; fund tax authorities and give them operational autonomy; allow a 3–6 month transition before a new tax takes effect.
TaxpayerTreat tax as a civic duty. Entitled to information, courteous assistance, to object and get a response in reasonable time, a fair appeal, and to represent themselves or use an agent (an agent paid for the work must be an accredited tax practitioner).
Revenue agenciesTreat the taxpayer as a customer; implement laws and treaties; cooperate and exchange information; audit on time; educate taxpayers; prevent, detect and punish corrupt officials.
Professional bodies & practitionersFollow their codes of conduct; never aid evasion or corruption; promote compliance.
Media & advocacy groupsTax education; protect taxpayer rights; demand accountability for spending; balanced reporting; make candidates for office explain their tax plans.
Mandates of the three tiers, implementation measures, and fiscal–monetary–trade interaction

Mandates: a nationwide TIN drawing on BVN, NIMC, NCC, CAC, FRSC and NIS data; voluntary compliance through simple self-assessment, amnesty frameworks and education; technology-led collection; automated record keeping; information sharing; enforcement of civil and criminal sanctions; adequate funding including for refunds; ease of payment; autonomy; amicable dispute resolution before litigation.

Implementation measures: budget speeches carry fiscal policy statements; one revenue agency per tier; a tax court; taxation committees in the legislatures; an establishment Act for the JRB; lower small-business rates and a VAT threshold; a tax policy implementation committee; an office of tax simplification (target: top 50 for ease of paying taxes); a tax policy website; reports to the National Economic Council; a national tax day; INEC to require parties to publish tax agendas.

Interaction of policies: fiscal policy (Ministry of Finance: spending, taxation, borrowing through the budget), monetary policy (CBN: money supply, interest rates, credit) and trade policy (tariffs, exchange rate, openness) share the long-run goal of growth with price stability. Fiscal dominance arises when deficits force the central bank to monetise debt.

Chapter 2

Tax organs, taxing rights and multiple taxation

In plain words

Tax administration is the machinery that collects tax: who may tax what, and which agency does the work. Nigeria is a federation, so the Constitution splits taxing powers: the Federal Government taxes companies, States tax resident individuals, and local governments collect rates and levies. Where tiers overlap, the same person pays several charges on the same base, which is called multiple taxation. From 2026 the Nigeria Revenue Service (NRS) replaces the FIRS, and the Joint Revenue Board coordinates all the tax authorities.

AuthorityTaxes it administers under the NTAA 2025
Nigeria Revenue Service (federal)CIT for resident and non-resident companies including chargeable gains; WHT on companies and non-resident individuals; petroleum profits tax; hydrocarbon tax; VAT; development levy; stamp duties on bodies corporate; PIT of the armed forces and police (non-civilian) and of non-residents of any State employed in Nigeria; mineral royalty.
State IRS & FCT-IRSIncome tax, chargeable gains and stamp duties of resident individuals; other State taxes. Under the States' harmonised list: income tax, stamp duties, property tax, road tax, haulage levy.
Local Government Revenue CommitteeRates, fines and levies: harmonised levy (shops, slaughter slabs, motor parks), TV and radio fees, user charges (registrations, street naming, signage, sewage, burial permits), daily market ticketing.
NRS and JRB in one glance
  • NRS: Executive Chairman appointed by the President with Senate confirmation; six Executive Directors, one per geopolitical zone (4 + 4 years); a Board with ex-officio members (Finance, Planning, AGF, Petroleum, CBN, RMAFC, Customs, CAC) and a Technical Committee.
  • JRB: chaired by the NRS Executive Chairman with every State IRS and the FCT-IRS chairman. Keeps the national TIN database, settles residency disputes between tax authorities, advises on treaties and new taxes, publishes revenue and tax expenditure data, guides accreditation of tax agents. The TAT and the Tax Ombud sit under the JRB Act.
Fiscal federalism (pitfall May 2021)

Fiscal federalism is the system of revenue generation and redistribution among the component units of a federation, and the financial functions and responsibilities each tier carries. Its base is s.2(1)–(2) of the Constitution: one indivisible sovereign state, a federation of States and a Federal Capital Territory. Other federations: the USA, Canada, Australia, India, Germany, Brazil, Switzerland, Malaysia.

Causes of multiple taxation
  • Autonomous taxing powers of all three tiers
  • Unfair revenue sharing; fiscal imbalance pushes States and LGs to raise levies
  • Levies with no legal backing
  • Same base taxed twice (VAT vs State consumption tax; CIT plus several profit levies)
  • Weak harmonisation and enforcement of the approved list
  • Private consultants and touts paid on commission
Impact on compliance & yield
  • Investment uncertainty
  • Erosion of the tax base as businesses relocate
  • Disincentive to file and pay correctly
  • Lower yield and higher cost of collection
  • Higher compliance cost, more disputes
Solutions
  • Harmonised taxes and levies per tier (NTAA; States Harmonised Taxes & Levies Bill 2025)
  • One revenue agency per tier (NTP)
  • JRB coordination and dispute settlement
  • Ban on consultants and touts collecting tax
  • Single-window, technology-based payment
  • Tax Ombud complaints route
  • 2023 Executive Orders (Nov 2024 question)

Chapter 3 · NTAA ss.34–55, JRB Act 2025

Objections, appeals, the Tax Ombud and refunds

In plain words

An assessment is the tax authority's formal demand for tax. A taxpayer who disagrees follows a strict ladder: object to the authority first, then appeal to the Tax Appeal Tribunal, then go to the courts on points of law. Each step has a deadline, mostly 30 days, and missing one makes the assessment final. The NTAA 2025 adds two softer routes: negotiated settlement (ADR) and complaints to the Tax Ombud.

Day 0Notice of assessment servedregistered post, courier or electronic; states objection rights
≤ 30 daysWritten objectionto the tax authority; extendable for good cause
≤ 90 daysAuthority respondsor the objection is deemed upheld
≤ 30 daysAppeal to TATlate appeal only for sufficient cause
≤ 30 daysFederal High Courton points of law only, notice via TAT Secretary
thenCourt of Appeal → Supreme Courteither party
A valid objection (s.41 NTAA) states
  1. The specific issues or errors, with monetary values
  2. The amendment required
  3. The justification
  4. Assessable and total profit (or income) the taxpayer admits
  5. The tax admitted, or that none is payable

Delivered in person, by courier or electronically within 30 days of service.

Notice of appeal to the TAT contains
  1. Tax file number
  2. Year of assessment
  3. Date of the decision appealed
  4. Assessable profit disputed
  5. Total profit disputed
  6. Tax disputed
  7. Grounds of appeal, which cannot differ from the grounds of objection
Tax Appeal TribunalRule
Sources.23(1) JRB (Establishment) Act 2025, replacing s.59 and the Fifth Schedule of the FIRS Act; pending cases continue.
ReachDisputes under the NTA, NTAA and any federal or State tax law. Six zones; offices in Abuja, Bauchi, Benin, Enugu, Ibadan, Kaduna, Gombe and Jos.
PanelFive commissioners per zone; the chairman is a legal practitioner of 10+ years with tax experience; quorum three; virtual hearings allowed.
Commissioners10+ years in law, accounting, finance, economics or taxation, or a retired tax administrator, or an organised private sector member; appointed by the Minister of Finance; 3 years renewable once; retire at 70; must disclose interests and cannot appear as counsel.
Settlement windowOn first appearance the chairman may allow up to 30 days to settle.
HearingSeven clear days' notice; held in public; onus on the appellant; Evidence Act applies; each party bears its own costs.
Security for taxWhere the appellant filed no returns, the appeal is frivolous, or security is expedient, the TAT may order a deposit of the lesser of last year's tax and half the disputed tax. Failure confirms the assessment with no further appeal at the TAT.
OutcomeConfirm, reduce, increase or annul. Judgment enforced as a Federal High Court judgment once registered with its Chief Registrar.
Office of the Tax Ombud

Independent arbiter for complaints on taxes, levies, fees, customs and excise. Mediates, investigates, enters premises of tax authorities, makes recommendations, can sue on a taxpayer's behalf, watches for arbitrary fiscal policy and reports to the National Assembly. Charges no fee. Head appointed by the President for 4 years, renewable once.

Alternative dispute resolution

Allowed at any stage where it serves revenue or public policy, litigation cost outweighs benefit, the taxpayer accepts the authority's position, or a whistleblower settlement exposes schemes. Not for deliberate evasion or fraud, or where a court ruling would improve compliance. Ends in a signed written agreement (issues, undertakings, future-year treatment, withdrawal of appeals, payment), enforceable as a debt.

Assessments & refunds
  • Self-assessment is a deemed assessment, even nil (s.34)
  • Best-of-judgment where no return (s.35)
  • Additional assessment within 6 years; no limit for deliberate misstatement (s.36)
  • Tax paid in the currency of the transaction
  • Refund within 90 days of decision; claim within 6 years (s.55)
Pitfalls on this topic
  • Nov 2025 Q7(d) asked for objection and appeal procedure: candidates gave the old FIRS Act sequence. Use the NTAA timeline above, and mention the 90-day deemed acceptance.
  • Appeal from the TAT to the Federal High Court is on points of law only. Model answers stress it.
  • A "report to your client on presenting a case before the TAT" wants three stages: pre-hearing (file notice, pay fee, serve, response), hearing (opening, evidence, cross-examination, closing), post-hearing (judgment, service, appeal).
B

Taxation of companies & investment income

35% · Study Text ch. 4–12

Chapter 4 · NTA ss.22–24

Basis periods: commencement, cessation, change of date

A company is Nigerian if incorporated under CAMA 2020 and is taxed on its worldwide profits. A foreign company is taxed on profits attributable to its Nigerian operations. Since the Finance Act 2019, and retained in s.22 NTA, every year is on preceding year basis: there are no overlaps and no double-counting at commencement.

In plain words

Companies are taxed for a year of assessment, which is a calendar year, but each company makes up accounts to its own year end. The basis period links the two: it is the set of accounts whose profit is taxed in a given year of assessment. The normal rule is preceding year basis, so accounts ending in 2026 are taxed in the 2027 year of assessment. Special rules apply when a business starts, stops or changes its year end, and a wrong basis period throws every later figure off.

CommencementObiageli Ltd: starts 1 Mar 2020, year end 31 Oct
YOABasis period
2021 (1st)1 Mar 2020 – 31 Oct 2020
2022 (2nd)1 Nov 2020 – 31 Oct 2021
2023 (3rd)1 Nov 2021 – 31 Oct 2022
First period: commencement to the end of the first accounting period. A first set of accounts longer or shorter than that is apportioned (Okorie: 15 months split 3/15 and 12/15, leaving a year with no assessment).
CessationApex Ltd: Dec year end, ceases 31 Mar 2024
YOABasis periodTax due
20241/1/23 – 31/12/2330 Jun 2024
20241/1/24 – 31/3/2430 Sep 2024
Profits from the start of the period to cessation; tax due within six months of cessation. Cease 31 Aug 2024 and the final period falls in 2025 YOA, due 28 Feb 2025.
Change of accounting date to 2025 (CITA)
  1. Find the first tax year affected by the change
  2. Take it and the next two years
  3. Compute assessable profit for the three years on the old date
  4. Compute again on the new date
  5. Total each set
  6. Assess the higher total; later years follow the new date

Bako Ltd: old date ₦1,685,000 vs new ₦1,740,000, so the new date is used.

Change of accounting date from 2026 (s.23 NTA)

The basis period for the year of change runs from the day after the previous basis period to the new accounting date, whatever its length. Later years follow the new date. Notify the NRS at least 30 days before the usual filing due date.

Chukwuma Ltd moves from December to June 2026: 2027 YOA = 1/1/26 – 30/6/26 (six months); 2028 YOA = 1/7/26 – 30/6/27.

Post-cessation receipts and payments

Treated as received or paid on the last day before cessation (Enugu Ltd: bad debt recovered +₦20,000, rent paid −₦40,000). New in s.24 NTA: disclose them to the NRS within one month; resulting additional assessments or repayments carry normal objection rights.

Chargeability

A company is charged in its own name; through its principal officer, attorney, agent or representative; or, in receivership or liquidation, in the name of its receiver or liquidator. From 2026 a Nigerian parent is also taxed on the undistributed profits of a controlled foreign company (CFC rule) and must top up a low-taxed foreign subsidiary to the minimum effective rate.

Pitfalls
  • May 2024 Q1: wrong basis periods for a company that commenced in 2018. A first year of assessment that fell before the Finance Act 2019 still uses the old rule; later years use preceding year basis. The Study Text shows the resulting gap year (Olubiyi: no 2020 assessment).
  • May 2021 Q2: commencement rules not applied to the 2nd and 3rd years after a pioneer period. The day after the pioneer period is a new trade.

Chapter 5 · NTA ss.20–21, 163–164, 192

Adjusted profit: what you add back and what you take out

Start from net profit per accounts. Add expenses that are not deductible and taxable income left out; deduct income that is not taxable and deductible expenses not charged. Under the NTA an expense must be incurred wholly and exclusively in producing the income; the CITA test also demanded "necessarily and reasonably".

In plain words

Accounting profit is not taxable profit. The tax law refuses some costs (depreciation, fines, reserves) and exempts some income (franked dividends, government bond interest), so you start from profit before tax and adjust it. Adding back the refused costs and taking out the exempt income gives adjusted profit, which for a continuing company is its assessable profit. This is step one of every company tax question and the step examiners say candidates get wrong most often.

Allowable (s.20 NTA)
  • Interest on debt used to earn the income, within the connected-person cap
  • Rent and premiums on premises used for the business
  • Salaries, wages and staff benefits
  • Repairs and renewals of premises, plant, implements and utensils
  • Costs of establishing, preserving or defending title to an asset
  • Contributions to approved pension schemes
  • Proven loss or damage of stock
  • Bad and doubtful debts (not with related parties; doubtful debts per GAAP; evidence of recovery efforts)
  • Research and development, capped at 5% of turnover
  • Pre-commencement costs within 6 years, deemed incurred on day one
  • REIC dividends and mandatory distributions
  • Compensating payments that qualify as interest in a regulated securities lending transaction
  • Assistive devices and disability-related products
  • Donations to qualifying bodies within 10% of profit before tax
Disallowable (s.21 NTA)
  • Capital repaid or withdrawn; any capital expenditure
  • Domestic or private expenses; assets not used in the business
  • Amounts recoverable under insurance or indemnity
  • Taxes on income or profit, in Nigeria or abroad
  • Payments to unapproved pension or provident funds
  • Depreciation, impairment, and unrealised exchange differences
  • Sums reserved out of profits (general reserves, general provisions)
  • Payments to connected persons not at arm's length
  • Expenses of earning exempt income; costs deductible against a chargeable gain
  • Fines and penalties under any law
  • Tax or penalty borne for another person (WHT you absorbed for a landlord)
  • Dividend-type compensating payments in securities lending
  • Any expense on which VAT was due but not charged, or imports on which duty or levy was not paid
Add-back drillitems from the May 2026 Q1 model answer (ROMO Agro-allied)
Item in the accountsTreatmentWhy
Improvement to industrial building (in repairs)Add backCapital; claim capital allowances instead
Repairs of plant and equipmentAllowRevenue repair
Legal fees: acquiring a short lease; renewing a long leaseAdd backCapital in nature
Legal cost of a tax appealAdd backRelates to tax, not to earning income
Professional retainershipAllowRecurrent business cost
Preliminary expenses written off; feasibility studyAdd backCapital / pre-trading capital
Stamp duties on increase in share capitalAdd backCapital
General provision for doubtful debtsAdd backReserve (CITA); specific provision allowed
Bad debt recovered (previously allowed)TaxableAlready in profit; leave it in
Donation to a country clubAdd backNot a qualifying body
Books donated to the National Library; MAN subscriptionAllowQualifying body / trade subscription
Transfer to general reserves; income tax provision; depreciationAdd backAppropriation / tax / replaced by allowances
Dividend received (net); surplus on building revaluationDeductFranked investment income; unrealised capital
Other model answers add back: loss on disposal of a vehicle (capital; gain or loss goes to the gains computation), legal fees on share issues, unbranded hampers or gifts (not wholly for the business), and excess interest to a foreign parent.
ItemCITA (to 2025)NTA (from 2026)
DonationsFifth Schedule bodies; out of profit, so none in a loss year; not capital; cap 10% of total profit before donations. Tertiary and research institutions: higher of 15% of total profit or 25% of tax. FA 2020: pandemic and disaster donations up to 10% of assessable profit.Public funds, statutory bodies, religious, charitable, educational and scientific institutions in Nigeria, diplomatic bodies, pandemic and emergency funds. Revenue or capital. Cap 10% of profit before tax. In-kind value = lower of market value and cost. Evidence to the NRS.
Research & developmentActual spend allowed; a reserve up to 10% of total profits; 20% investment tax credit for commercialisation.Deductible up to 5% of turnover. Proceeds from selling the R&D outcome are taxable.
Bad & doubtful debtsSpecific allowed; general disallowed.Doubtful debts estimated under GAAP allowed; related-party bad debts disallowed; evidence of recovery attempts required.
Foreign-currency expensesNot addressed.Deductible only at the CBN official rate; any excess from a higher rate is disallowed.
Interest restriction: 30% of EBITDAJones Nigeria Ltd, 2025 YOA
EBITDA2,550,000
Cap: 30% × EBITDA765,000
Interest to other creditors500,000
Interest to Canadian connected company750,000
Less: interest for tax-exempt profits(200,000)
Interest qualifying1,050,000
Deductible: lower of cap and qualifying765,000
Excess carried forward (max 5 YOAs, to 2030)285,000
Applies to interest on debt from a foreign connected person; Nigerian subsidiaries of foreign banks and insurers are excluded. Same rule in FA 2019 (thin capitalisation, May 2024 Q1 and May 2023 Q6) and the NTA.
Three more rules that move numbers
  • Mixed-use expenses: allow only the taxable share: deductible expenses × taxable income ÷ total income.
  • Waivers: if an allowed liability is later waived or refunded, the amount is income on that day (s.192). A waived capital liability is a chargeable gain.
  • Connected persons: anyone under common control, ownership or management; anyone given a guarantee for matching debt; and related parties under the TP Regulations.
Examiner's verdict, seven diets running

Question 1 reports for Nov 2022, May 2023, Nov 2023, Nov 2024, May 2025, Nov 2025 and May 2026 all name the same failure: allowable and disallowable expenses. Before the exam, write your own two-column list from memory until it matches the boxes above. May 2022 adds the dividend exemption rules and the donation conditions; May 2021 adds non-resident head-office expenses.

Chapter 7 · NTA First Schedule

Capital allowances

Capital allowances replace depreciation so every taxpayer writes off assets at the same statutory rate. The company must own the asset at the end of the basis period and use it in the business.

In plain words

Depreciation is an accounting estimate each company chooses for itself, so the tax law ignores it and gives capital allowances instead: a fixed, statutory write-off of the cost of business assets. Qualifying capital expenditure (QCE) is the cost of an asset that earns allowances, and tax written-down value (TWDV) is the part of that cost not yet written off. Allowances are deducted after adjusted profit to reach total profit, so they reduce tax without changing the accounts. From 2026 the NTA writes assets off straight-line in three classes; older assets follow transition rules.

CITA rates (exam rate sheet)InitialAnnual
Buildings (industrial & non-industrial)15%10%
Mining expenditure95%—
Plant (excl. furniture); manufacturing plant50%25%
Construction plant50%—
Agricultural plant; plantation equipment95%—
Motor vehicles50%25%
Public transportation vehicles95%—
Furniture & fittings25%20%
Housing estate50%25%
Ranching & plantation30%50%
Research & development95%—
CITA mechanics you still need
  • Annual allowance = (cost − initial) ÷ tax life, the same each year; keep ₦10 per asset in the books.
  • Investment allowance 10% (plant), abolished from 1 Sept 2023.
  • Restrict to 66⅔% of assessable profit except manufacturing and agro-allied companies; unused allowances carry forward without limit.
  • Replacement plant: 95% one-off, 5% retained. Gas utilisation after its tax holiday: 90% annual, 10% retained.
  • Balancing allowance when proceeds < TWDV; balancing charge when proceeds > TWDV, capped at allowances given.
  • Second-hand building: no initial allowance; cost = lower of original construction cost and price paid. Exclude land.
  • Hire purchase: strip out interest; each instalment paid is a separate addition.
  • Small companies (FA 2021): allowances deemed used each year.
  • Unused allowances at cessation go back up to 5 years.
Class 1 · 10% a year

Buildings · agricultural (plantation clearing, planting, ranching) · masts · intangible assets (R&D, patents, licences, formulas) · heavy transport (aircraft, pipelines and cables, vessels, ships' engines, trains and track)

Class 2 · 20% a year

Plant · agricultural equipment · furniture & fittings · mining · other equipment

Class 3 · 25% a year

Motor vehicles · software · other capital expenditure

How the NTA computes
  • Straight-line over the tax life; no initial allowance for assets bought from 1 Jan 2026.
  • Pro-rate when the basis period is under 12 months (Akon Ltd: ₦50m vehicle, 25%, six months → ₦6.25m).
  • Record a notional 1% of cost until disposal; it does not change the allowance.
  • No 66⅔% restriction, no balancing allowance or charge, no investment allowance. Unused allowances still carry forward.
  • QCE includes acquisition, refurbishment and improvement, and every cost of bringing the asset to first use.
NTA conditions (asked as theory in the 2026 text)
  1. Owner at the end of the basis period
  2. Asset used in the business
  3. Priority-sector companies: certificate of acceptance from the Industrial Inspectorate Department
  4. VAT, import duty or levy on the asset actually paid
  5. Asset used partly for exempt income: pro-rate only if non-taxable income is 10% or more of total income
  6. Allowances on priority (EDI) activities only against priority profits
  7. No allowance on items already deducted as expenses
  8. No allowance on the excess cost of foreign currency bought above the official rate
Transition rules for assets that already had allowances
  • Remaining life under the NTA = NTA life − years already claimed.
  • If years already claimed equal or exceed the NTA life, claim the residue in one go in 2026, keeping the 1% notional record.
  • A fully relieved asset gets nothing on its ₦10 CITA retention.
  • Hire purchase and finance leases: QCE = instalments paid excluding interest; the hirer or lessee is the owner; the lessor claims nothing. Operating lease: the lessor claims.
Pitfall: May 2026 Q1

Assets bought during a pioneer period carried no allowances then. In the post-pioneer computation they are treated as acquired on the first day of the new trade, so each takes its initial allowance in the first post-pioneer year, and the model answer kept ₦10 per asset when lives expired (₦30 for three vehicles).

Chapter 6 · NTA s.27

Loss relief

In plain words

A tax loss arises when a company's allowable expenses exceed its taxable income for a basis period. The company does not get a refund; it carries the loss forward and sets it against later profits of the same trade until it is used up. In the computation, losses come off after assessable profit and gains, and before capital allowances.

Companies
  • Carry forward only, against profits of the same trade, first available year onward, until used. No time limit.
  • Never relieve more than the loss.
  • Compute the loss on the same basis period as assessable profit.
  • No current-year relief (that is for individuals, claimed within 12 months) and no terminal loss relief.
  • Order in the computation: assessable profit + chargeable gains − losses b/f − capital allowances = total profit.
New ring-fence

A loss from selling or disposing of digital or virtual assets is deductible only against profits from the digital-asset business. Petroleum losses are ring-fenced by class (PML vs PPL) for hydrocarbon tax; see Oil & gas.

Pitfall: Nov 2020 Q2

Loss brought forward and donations treated in the wrong order in a petroleum computation. Losses come off adjusted profit to give assessable profit; allowances then come off assessable profit.

Chapter 11 · NTA ss.9, 27, 57, 59; NTAA s.38

Total profit, CIT, development levy and the 15% minimum

In plain words

Total profit is the figure actually taxed: assessable profit plus chargeable gains, less losses brought forward and capital allowances. Income tax is 30% of total profit (0% for small companies). The 4% development levy sits on top, charged on assessable profit and replacing four older levies. Very large companies then check that their tax is at least 15% of accounting profit (the minimum effective tax rate) and pay a top-up if it is not.

Pro-forma: income tax and development levy (NTA)year ended 31 Dec 2026 → 2027 YOA
Profit before tax per accountsx
Add: disallowed items
Depreciation, impairment, unrealised FX lossx
Fines, penalties, taxes borne for others, private expensesx
Excess connected-party interest (> 30% EBITDA)x
Donations outside s.163 or above 10% of PBTx
Provision for lease liability; expenses with VAT or duty unpaidx
Disposal costs of chargeable assets (they reduce the gain instead)x
Deduct: non-taxable items
Dividends (franked), CIS dividends, FGN or State bond income(x)
Unrealised FX gains; payment of lease liability; book profit on disposals(x)
Adjusted / assessable profitA
Add: chargeable gainsx
Less: unrelieved loss b/f (same trade)(x)
Less: capital allowances (b/f + year), no restriction(x)
Total profitT
Income tax @ 30% × Tx
Development levy @ 4% × Ax
Less: economic development tax credit (if a priority company)(x)
Add: top-up to 15% ETR (if in scope)x
Tax payable before WHT credit notesx
Danladi Ltd (Study Text 11.2): add back depreciation, a late-filing penalty, incidental costs of a land disposal and an unrealised FX loss; deduct FGN bond interest and a CIS dividend.
Development levy (s.59)

4% of assessable profit of every company except small companies and non-resident companies. Not charged on hydrocarbon tax profits and not deductible for hydrocarbon tax. It replaces tertiary education tax (3% of assessable profit), the NITDA levy (1% of PBT), the Police Trust Fund levy (0.005% of net profit) and the NASENI levy (0.25% of PBT).

TETFund
50%
Nigerian Education Loan Fund
15%
Defence & Security Infrastructure
10%
NITDF
8%
NASENI
8%
National Cybersecurity Fund
5%
NBTI
4%
Minimum effective tax rate (s.57)

Applies to a constituent entity of an MNE group with turnover of €750m or more, and to any company with turnover of ₦50bn or more. Free-zone enterprises are out of scope for approved activities, unless selling into the customs territory or part of such a group.

ETR = covered taxes ÷ net income. Covered taxes = CIT + development levy − priority-sector tax credit. Net income = audited PBT − franked investment income − unrealised gains or losses.

Jagab Ltd: turnover ₦65bn, covered taxes ₦805,000, net income ₦7,415,000, ETR 11%, so top-up = (805,000 ÷ 11%) × 15% − 805,000 ≈ ₦292,727. The economic development credit can never reduce the top-up.

Dividend tax (s.9 NTA; CITA s.19 as amended by FA 2019)

If a company pays a dividend when it has no total profit, or a dividend larger than its total profit, the dividend is treated as the total profit and taxed at 30%. Excluded since FA 2019 and in s.9: dividends out of retained earnings already taxed; exempt profits; franked investment income; REIC distributions of rent and dividends.

Before FA 2019: total profit ₦200m, dividend ₦280m → tax 30% × ₦280m = ₦84m. ABC Ltd (2026 text): ₦4.2m dividend, ₦3.6m total profit, ₦600k traced to taxed retained earnings → no dividend tax.

Other assessment bases
  • Turnover-based (s.38 NTAA): where profit is nil, too low or unascertainable, a resident pays on a fair percentage of gross income; a non-resident on its EBIT ÷ revenue margin × Nigerian turnover.
  • Deemed distribution (s.10 NTA): a company controlled by five or fewer individuals that does not distribute profits it could have paid may be directed to treat them as distributed, within 3 years of filing audited accounts; LLP profits are always deemed distributed.
  • Interim dividends no longer trigger advance CIT (abolished by FA 2019).
Pre-2026 charges you will meet in past papers
  • CIT 30% / 20% / 0% by turnover band (FA 2019).
  • Tertiary education tax on assessable profit: 2% to 31 Dec 2021; 2.5% from 1 Jan 2022; 3% from 1 Sept 2023.
  • Minimum tax on gross turnover where CIT was lower (0.5% under FA 2019), with exemptions for small companies, the first four years of business and agricultural companies. Recent papers usually say "ignore minimum tax".
Pitfall: Nov 2025 Q3(b)

Candidates could not state the FA 2019 rule when the dividend exceeds profit or there is no total profit, nor test it against the dividend paid. State the charge, list the four exclusions, then apply them to the figures before concluding.

Chapter 8 · NTA ss.34–47

Chargeable gains

The Capital Gains Tax Act is repealed. A company's chargeable gains are now added to total profit and taxed at 30%, on preceding year basis (a disposal in the 2026 accounts falls into the 2027 year of assessment).

In plain words

A chargeable gain is the profit a company makes when it sells or otherwise disposes of an asset such as land, shares or plant, as distinct from its trading profit. Until 2025 it was taxed separately at 10% under the Capital Gains Tax Act. From 2026 the NTA adds the gain to total profit, so it bears the normal 30%. The gain is the proceeds less the asset's cost, or its TWDV if allowances were claimed, less incidental costs, subject to exemptions and reliefs.

Computation (NTA)Mobolaje Ltd, 2028 YOA
Plant that had allowances
Proceeds (Mar 2027)55,000,000
Less: TWDV (45m − 20% × 45m)(36,000,000)
Gain19,000,000
Land without allowances
Proceeds42,000,000
Less: agent's fee(1,250,000)
Less: cost(25,000,000)
Gain15,750,000
Compulsorily acquired propertyexempt
Into total profit34,750,000
With no balancing charge in the NTA, a gain on an asset that had allowances is proceeds − tax written-down value. That one figure claws back the allowances and taxes the real gain.
Deductions & special rules
  • Deduct cost (or TWDV), improvement costs, costs of defending title, disposal costs (valuers, surveyors, lawyers, accountants, adverts) and acquisition costs (stamp duty, conveyancing).
  • Part disposal: cost × A ÷ (A + B), A = proceeds of part sold, B = market value of the rest. Maryland: ₦30m × 40 ÷ 75 = ₦16m; gain ₦24m.
  • Market value replaces proceeds for non-arm's-length deals, unvaluable consideration, trustees for creditors and inheritances. Use the higher of proceeds and market value on sale; the lower of price paid and market value on purchase.
  • Gifts: the donee takes the last arm's-length price, else market value.
  • Asset taken for a debt: the creditor's cost cannot exceed market value, and the creditor's gain cannot exceed the gain using the debt as cost (May 2022 pitfall).
  • Options: the disposal date is when the option is exercised. Conditional contract: when the condition is met.
  • Instalments over 12 months: spread the gain by consideration received each year.
  • Bundled bargains: one disposal; apportion the price.
Asset lost or destroyedABC Ltd: compensation used within 3 years
Insurance received7,000,0007,000,000
Residue of old asset1,000,0001,000,000
8,000,0008,000,000
Cost of replacement(5,000,000)(12,000,000)
Resultgain 3,000,000CA addition 4,000,000
Compensation plus scrap above the replacement cost is a gain; below it, the shortfall is a new qualifying addition. Allowances continue on the old residue.
Not chargeable under the NTA
  • Compulsory acquisition of land (unless bought knowing it was coming, or advertised to the authority)
  • Shares in Nigerian companies where proceeds < ₦150m and gain ≤ ₦10m in any 12 months; or proceeds reinvested in Nigerian shares in the same YOA (gain taxed only on the part not reinvested); or securities lending
  • Compensation for loss of office or injury up to ₦50m (payer deducts tax on the excess)
  • Principal private residence once in a lifetime, up to one acre
  • Personal chattels up to the higher of ₦5m and 3 × annual minimum wage
  • Up to two private cars per individual per year
  • Gift received and given away as a gift
  • Charity, co-operative, friendly society and trade union property not used in trade
  • Startup investments held 24 months by angels, VCs, PE funds, accelerators, incubators
  • Pension funds, retirement benefit investments, awards for valour
  • Life assurance rights, unless bought from the original owner
Location and indirect transfers

Immovables and tangible movables are located where they sit; debts where the creditor is resident or has a PE; registered shares where the register is; goodwill where the business is carried on; patents where registered; digital assets where the beneficial owner is resident. Shares in a foreign entity are Nigerian assets if more than 50% of their value in the previous 365 days came from Nigerian property or companies. Under s.47, a non-resident's share sale that changes the ownership of a Nigerian company or Nigerian asset is chargeable.

CGT Act rules behind the past papers (disposals to 2025)
  • Rate 10% on chargeable gains; separate from CIT.
  • Roll-over relief (s.32): land and buildings used in the trade, fixed plant and machinery, ships, aircraft and goodwill. Model answers require the replacement within 12 months of the disposal (May 2024: bought 14 months later, no relief). Full reinvestment defers the whole gain and reduces the new asset's cost; partial reinvestment taxes the gain up to the part not reinvested. Motor vehicles never qualify (Nov 2024).
  • Returns and payment by 30 June (disposals Jan–Jun) and 31 December (Jul–Dec) of the year of disposal (FA 2020). With no return: best-of-judgment assessment, payment within 60 days, 10% penalty plus interest.
  • Loss of office exempt up to ₦10m (FA 2020). Shares exempt below ₦100m proceeds, or if reinvested (FA 2021; FA 2023: within the same YOA).
  • Capital losses carried forward against gains on the same class of asset only from FA 2023 (Sept 2023). A May 2023 loss could not be used (May 2026 model answer).
  • Related-party reorganisation (FA 2019): exempt if related for 365 days before and the assets are kept 365 days after.
Capital gains pitfalls, diet by diet
  • Nov 2021: which assets qualify for roll-over.
  • May 2022: disposal of an option; asset acquired in exchange for a debt.
  • May 2023: the cost on which allowances are granted for the replacement asset.
  • Nov 2023 & May 2024: computing roll-over; the time lag between disposal and reacquisition.
  • Nov 2024 & May 2025: Finance Act 2021 and 2023 rules on shares.
  • May 2026: assets transferred between connected parties.

Chapter 9 · NTA ss.4, 9–10, 19, 162; NTAA s.51

Investment income: dividends, interest, royalties, rent, REICs

In plain words

Investment income is what a company earns from holding investments rather than trading: dividends, interest, royalties and rent. Most of it suffers withholding tax (WHT): the payer deducts tax and pays it to the tax authority. For a Nigerian company WHT is usually an advance payment of its own tax, but on dividends from Nigerian companies it is final. That is why such dividends, called franked investment income, are taken out of the computation.

Dividends
  • Income = the gross dividend, arising on the day it becomes payable.
  • Dividend received after WHT is franked investment income: final tax, excluded from total profit. On redistribution, the WHT suffered offsets WHT due.
  • Scrip or bonus shares: not taxable and no WHT.
  • To a non-resident: WHT is final, and neither payer nor recipient can reclaim it.
  • Exempt: from authorised collective investment schemes; from wholly export-oriented businesses; foreign dividends brought in through approved channels.
  • Old CITA exemptions: dividends out of pioneer profits; dividends on foreign-currency equity of 10%+ for 5 years (agriculture, petrochemicals, LNG) or 3 years (others).
Interest, royalty, rent
  • Interest is Nigerian when the payer is a Nigerian resident or a Nigerian PE. The NTA definition is wide: penal interest, discounts, profit share in non-interest finance, the finance-cost element of a finance lease, FX differences on debt and securities, hedging payments.
  • Exempt: foreign interest, royalty and rent brought in through approved channels (CBN or authorised dealers).
  • Rent received in advance is spread over the period, up to five years.
  • Allowable against rent: rates and land use charge, collection and agency costs, adverts for tenants, repairs, bad debts, interest on loans for the property, insurance, water rate. Not: depreciation, capital costs, appropriations.
Real estate investment companies

An SEC-approved REIC is exempt on dividends and rent received for its shareholders if it distributes at least 75% within 12 months of year end. Distributions are deductible and outside dividend tax. Not exempt: the shareholders on what they receive; the REIC's own fees and income; anything when the 75%/12-month test fails. Illustration 9.2: 86% distributed within six months, so ₦240m is excluded and the dividend-tax base of ₦260m is below total profit.

Withholding tax mechanics

s.51 NTAA and the Deduction of Tax at Source (Withholding) Regulations 2024: deduct when payment is made or settled; between related parties, at payment or when the liability is recognised, whichever is earlier. Tax-exempt payers must still deduct. The Study Text uses 10% on dividends, interest, rent and royalties to non-treaty residents and 7.5% for treaty residents. Small companies' income is not subject to WHT.

Pitfalls
  • May 2022 Q1: the CITA conditions for exempting dividends.
  • May 2023 Q1(c): the tax consequences of dividends for the company and its shareholders. Cover both sides.
  • May 2024 Q3(c): WHT for a recipient in a non-treaty country (10%, final) against a treaty country (7.5%).

Chapter 10 · NTA s.162, ss.168–169, Tenth Schedule

Incentives: economic development credit, pioneer transition, free zones

The NTA swaps the blanket pioneer tax holiday for an investment-linked tax credit. Pioneer companies keep their reliefs for the unexpired period at 1 January 2026, so both regimes will appear in questions for some time.

In plain words

Tax incentives are reliefs the government offers to steer investment into sectors it wants to grow. Until 2025 the main one was pioneer status: a tax holiday of up to five years. From 2026 it is the economic development incentive: instead of paying no tax, a qualifying company gets a tax credit worth 5% of its qualifying capital spending every year for five years. Pioneer companies keep the rest of their holiday, so both regimes can appear in one question.

FeaturePioneer status (IDA)Economic development incentive (NTA)
BenefitProfits of the pioneer product exempt; tax-free dividendsTax credit: 5% of each eligible QCE per year for 5 years, on QCE acquired within 5 years of production day
Period3 years + 2 year extension5 years from production day + one 5-year extension if 100% of profits are reinvested in the same products
Entry testProduct on the pioneer list; QCE at least ₦10mSector on the Tenth Schedule; QCE by production day at least the sector minimum (₦500m to ₦200bn); before the sector's sunset
ApplicationNIPCTo the Secretary of NIPC with fee 0.1% of QCE (max ₦5m) → NIPC recommends to the Minister (FMITI) with a tax expenditure report → President approves
Unused benefitLosses certified by FIRS; capital allowances deferredUnused credit carried forward for 5 years after the priority period, then lapses
Limit—Cannot reduce the 15% minimum ETR top-up; no other similar incentive
Step 1Apply to NIPCcapital commitment, parent residence, QCE before and 3 years after production, location, products and by-products, capital structure, directors, declaration, fee
Step 2Minister → Presidentcertificate issued within 30 days of approval; promoters incorporate within 3 months
≤ 1 month after productionIndustrial Inspectorate certifies production daynotifies NIPC and NRS within 1 month
≤ 1 monthNRS certifies pre-production QCEdisposals deducted; certificate within 14 days of inspection; below minimum → certificate discountenanced
AnnuallyCredit claimed with returnsseparate audited books for priority and non-priority business, or everything counts as non-priority
Cancellation of an EDI certificate
  • NIPC cancels on the company's request, on cessation or liquidation, or if production does not start within 12 months.
  • The Minister may suspend and demand a remedy within 3 months; failing that, the President cancels and may withdraw benefits.
  • Effective date: under one year after production day → production day; over one year → last anniversary of production day; failed conditions → production day.
  • NRS may withdraw credits within 6 years of cancellation (no limit for fraud).
  • M&A: two EDI companies combining keep only the survivor's expiry; a merger ends both and the new company may reapply.
Pioneer rules for the unexpired period (still examinable)
  • No capital allowances during the pioneer period. QCE before or during it is deemed incurred on the first day of the new trade.
  • The day after the pioneer period starts a new trade: apply commencement rules.
  • Pioneer losses are certified and deemed incurred on the first day of the new trade. ICAN practice: relieve them only against the first year of the new trade; any balance lapses (May 2026, Nov 2023).
  • Profit from non-pioneer products during the period is taxable (ROMO: imported fertiliser profit of ₦12.7m taxed in 2022 YOA).
  • Dividends limited to the credit on the exempt-profits account; loans only with the Minister's consent; directors' pay and shareholder charges restricted to a just and reasonable amount.
  • Revocation: production day more than a year after the date applied for; QCE below ₦10m; false information; abuse of the relief; evasion under its cover; activities outside the certificate.
Free trade zones under the NTA
  • Profit exempt if sales are exports or inputs to exports, at most 25% go into the customs territory, or sales go to petroleum and gas operators.
  • More than 25% into the customs territory: tax on profit from those sales. From 1 January 2028, customs-territory sales are fully taxable whatever the percentage.
  • Entities in scope of the 15% minimum ETR are not exempt.
  • They must still register, file returns and deduct WHT.
  • Contract manufacturing for a connected resident: the income is the resident's unless at arm's length; services between them fall under TP rules.
Other NTA exemptions worth listing
  • Agricultural businesses (crops, livestock, aquaculture, forestry, dairy, cocoa processing) for their first 5 years
  • Companies engaged in sporting activities
  • Export profits repatriated through official channels
  • FG and State bond income
  • Friendly societies, co-operatives, charities, trade unions and governments, except trading income
  • Extra 50% deduction for wage awards to workers earning up to ₦100,000 a month and net new hires in 2023–2024, for two years between 2023 and 2025
Sector incentives from earlier papers: gas utilisation, road infrastructure credit, mining, agriculture

Gas utilisation, downstream (CITA s.39, examined May 2023): tax-free period of 3 years, renewable for 2, from production day certified by the Ministry; or instead an additional 35% investment allowance; afterwards 90% annual allowance with 10% retained plus 15% investment allowance; tax-free dividends where investment was in foreign currency or imported plant made up at least 30% of equity; interest on approved gas-project loans deductible (FA 2019 later tied this to the interest rules). FA 2020 limited the incentive to downstream gas utilisation businesses, not mere consumers, and barred companies that claimed it under any other law.

Road Infrastructure Tax Credit Scheme (Executive Order 007 of 2019; pitfall May 2023): a public–private scheme in which Nigerian companies, institutional investors or SPVs fund approved roads and recover the certified project cost, plus a single uplift equal to the CBN monetary policy rate, as a credit against CIT. Run by a committee chaired by the Minister of Finance including the FIRS; eligible roads approved by the President.

Mining: see Mining incentives. Gas utilisation investment allowance: see Oil & gas.

Chapter 12

Taxation of leases

IFRS 16 puts nearly every lease on the lessee's balance sheet as a right-of-use asset and a lease liability (except leases of 12 months or less and low-value assets). Tax law still splits leases into finance leases, treated as financed purchases, and operating leases, treated as true rentals. A lease is a finance lease if it transfers substantially all risks and rewards: ownership passes, a bargain purchase option, a term of about 80% or more of the asset's life, minimum payments close to fair value, or a specialised asset.

In plain words

A lease lets one party (the lessee) use an asset owned by another (the lessor) in return for rentals. For tax the key question is who owns the asset in substance. In a finance lease the lessee carries the risks and rewards of ownership, so the lessee claims capital allowances and only the interest in each payment is the lessor's income. In an operating lease the lessor keeps ownership, claims the allowances and is taxed on the whole rental.

Finance leaseOperating lease
Lessor · income taxOnly the interest element is income; capital element is recovery of cost; no capital allowancesWhole rental taxable; lessor claims capital allowances
Lessor · WHT10% on the interest element only10% on the whole rental
Lessor · VATInterest is a return on investment, no VATVAT on rentals
Lessee · income taxInterest, maintenance and insurance deductible; lessee claims allowances on instalments paid (excluding interest)Rentals deductible; depreciation of the ROU asset is not; no capital allowances
Lessee · VATOld law: input VAT capitalised. NTA: claim as input VATOld law: expensed. NTA: claim as input VAT
GainsLessor's gain on sale at the end, or lessee's after exercising the option, is a chargeable gain in total profitLessor's gain on disposal is a chargeable gain
Other lease types in the syllabus
  • Sale and leaseback: the owner sells an asset and leases it back. It releases cash; if the leaseback is a finance lease the seller keeps claiming allowances, and the instalments are deductible.
  • Leveraged lease: three parties: a lender funds most of the asset's price, alongside the lessor and lessee.
  • Sales-type lease: a manufacturer or dealer leases its own product, so it recognises a selling profit or loss when the lease starts.
  • Sub-lease: the original lessee leases the asset on to a third party, becoming a lessor for that sub-lease while staying a lessee under the head lease.
  • Leasing as a business: letting movable property for hire, with or without an option to purchase, covering rentals, operating and finance leases and hire purchase.
IFRS 16 amendments examined under this heading
  • COVID-19 rent concessions (May 2020): a lessee may treat a pandemic rent concession as not being a lease modification, if the new rent is substantially the same or lower, only payments due by 30 June 2021 are reduced, and other terms do not change substantively.
  • Interest rate benchmark (IBOR) reform, phase 2: when a lease's reference rate (such as NIBOR) is replaced on an economically equivalent basis, the lessee simply updates the discount rate instead of treating it as a modification; hedge relationships are not discontinued.
  • Lessor forgives lease payments: for an operating lease, the lessor remeasures expected credit losses and derecognises the forgiven receivable under IFRS 9; the lessee may recognise a gain equal to the amount forgiven, and the lessor's loss may be deductible.
  • Lease term and leasehold improvements: the lease term is the non-cancellable period plus extension options the lessee is reasonably certain to exercise; improvements are depreciated over the shorter of their useful life and the remaining lease term.
  • Lease liability in a sale and leaseback (Sept 2022, effective 2024): the seller-lessee measures the lease liability from the lease payments, not the sale proceeds, so it recognises no gain on the right of use it keeps.
C

International taxation

20% · Study Text ch. 13–19

Chapter 13 · NTA ss.17, 19

Non-resident companies, branches and subsidiaries

A company is resident in Nigeria if it is incorporated or registered here. The old place-of-management test is gone, so dual residence now arises only when another country uses management and control; the treaty tie-breaker (place of incorporation, else mutual agreement) resolves it.

In plain words

Nigeria taxes a Nigerian company on its worldwide profits but a foreign company only on profits that come from Nigeria. The hard question is when a foreign company has enough presence here to be taxable. The main test is a permanent establishment (PE): a fixed place of business, a dependent agent, a project, or services delivered here. A Nigerian company's branch abroad and its subsidiary abroad are taxed very differently, and examiners test that difference often.

When a non-resident company is taxable in Nigeria
  1. Through a permanent establishment (fixed base)
  2. Through a dependent agent who habitually concludes contracts
  3. Supervisory activities lasting more than three months
  4. A turnkey project (taxed wholly in Nigeria, never split into "offshore" and local)
  5. Professional, consultancy, management or technical services in Nigeria
  6. Dividends, interest, rent and royalties (WHT is the final tax)
  7. A contract awarded to a Nigerian company and subcontracted to it
  8. Significant economic presence, including digital services (see next section)
  9. Transactions with connected persons not at arm's length (adjusted)
What a PE includes under the NTA
  • A place through which the business is wholly or partly carried on
  • Business run through a Nigerian company or persons it controls
  • A stock of goods from which deliveries are made
  • Projects: surveys, design, delivery, construction, installation, commissioning, decommissioning and supervision, however split among entities
  • Services rendered through employees, agents or subcontractors

Not a PE: a facility used solely for storage or display, or solely to collect information. A sales outlet is always a fixed base.

New duties: register, file returns even where WHT was deducted, keep Nigeria-specific records, and appoint a tax representative where required. A non-resident giving technical, consulting or management services to a labelled startup suffers 5% WHT as final tax.

Nigerian company abroadOverseas branchOverseas subsidiary
Profits taxed in Nigeria?Yes, all of them: a branch's profit is the Nigerian company's profitNo; only dividends and fees it pays to the parent
Capital allowancesClaimed in Nigeria on branch assetsNone
LossesSet against Nigerian profits of the same sourceNo relief: Nigeria has no group relief
Foreign taxDouble taxation relief (treaty or unilateral credit)Credit on the dividend only
From 2026UnchangedCFC rule may deem undistributed profits distributed; top-up if taxed below the minimum rate
Pitfalls
  • Nov 2020 Q1: treating an overseas branch as if it were a separate company. It is not; its profit belongs to the Nigerian company.
  • May 2021 Q4: disallowed items in a non-resident's computation. Head-office expenses are allowed if incurred for the Nigerian business; amounts charged by head office as royalties, fees, commissions or interest (except for banks) are not, under treaty PE rules.
  • Nov 2024 Q3(c): Finance Act 2019 rules for non-residents: SEP, turnkey projects, and the fair percentage of turnover basis.

Chapter 14 · NTA ss.17(9), 35

Taxing the digital economy

In plain words

Digital businesses can earn from Nigerian customers with no office or staff here, so the physical-presence rules miss them. Significant economic presence (SEP) closes the gap: a foreign company becomes taxable when its digital or service activity aimed at Nigeria is large or targeted enough, even without a physical presence. The topic also covers why digital trade is hard to tax and the OECD's global responses.

FA 2019 + CIT (Significant Economic Presence) Order 2020

Objective: bring foreign companies earning from Nigeria without a physical presence into the tax net; the Order defines SEP under s.13(2)(c) and (e) CITA.

Digital SEP: ₦25m or more a year from streaming or downloading content, transmitting Nigerian users' data, selling goods or services through a platform, or intermediation; or a .ng domain or Nigerian-registered website; or purposeful and sustained targeting of Nigerians (Naira pricing or billing).

Technical, professional, management, consultancy SEP: any income or payment from a Nigerian resident, or a fixed base or agent in Nigeria.

Excluded: companies covered by a multilateral digital tax agreement; payments to employees, for teaching, or by a Nigerian company's foreign fixed base.

NTA 2025

A non-resident has SEP where it transmits signals, data, images or messages to Nigeria for e-commerce, app stores, high-frequency trading, data storage, online adverts, participative platforms, online payments, user data, search engines, digital content, gaming, cloud computing or online teaching, and profit can be attributed. "Technical services" means advertising, training or supply of personnel.

Digital assets (crypto, NFTs, virtual property) are chargeable assets; gains are taxed at 30% and losses are ring-fenced. Expanded PE rules cover remote and digital activity.

Challenges (May 2025, 7 marks)
  • Cross-border nature: where value is created vs consumed
  • Valuing digital assets
  • Computing gains and deductions on them
  • Disputes over these issues
  • Tracking transactions, worsened by CBN crypto restrictions
  • Business models with no physical presence
  • Leakage of direct and indirect taxes on e-commerce
  • Outdated corporate tax rules
  • Uncertain liability of foreign companies
  • VAT missed when supply is not deemed in Nigeria
Ways of tackling them (9 marks)
  • Expand the PE definition to a digital PE
  • Dedicated digital-tax legislation rather than stretching old laws
  • NRS partnerships with payment and platform providers
  • WHT on payments to non-residents regardless of presence
  • VAT by the Nigerian recipient on cross-border services (Vodacom v FIRS)
  • Assess foreign ride-hailing apps
  • Automation of tax processes (NTP)
  • Better data handling and protection
  • Follow OECD Pillar One (taxing rights) and Pillar Two (15% global minimum)

Comparators: the EU's 2018 proposal for a 3% digital services tax on groups above €750m global and €50m EU digital revenue, and a virtual PE at €7m revenue, 100,000 users or 3,000 business contracts in a state; India's 6% equalisation levy (2016).

Pitfalls

Nov 2021: objectives of the FA 2019 and SEP Order provisions. May 2025: stating the FA 2019 provisions on SEP. Learn the ₦25m threshold, the three digital tests, and the "any income" test for technical services word for word.

Chapter 15 · CITA ss.44–46 (old); NTA ss.120–122

Treaties and double taxation relief

A double taxation agreement binds Nigeria only after signature, Federal Executive Council approval and ratification by both chambers of the National Assembly. It takes effect from 1 January of the year after it enters into force. Relief can be unilateral (domestic law), bilateral (a DTA) or multilateral (the OECD Multilateral Instrument).

In plain words

Double taxation happens when the same income is taxed twice, usually in the country where it is earned and again where the earner is resident. Double taxation relief removes or reduces the second charge. It comes from Nigerian law alone (unilateral relief) or from a double taxation agreement (DTA) between two countries, which also decides which country may tax each kind of income and caps withholding tax. In a computation Nigeria taxes the foreign income, then gives a credit for the foreign tax within a limit.

Commonwealth relief, old s.44Ajoseh Nigeria Ltd, branch in Canada (May 2026)
Total profit (Nigeria + Canada)395,705
CIT @ 30%118,711.50
Relief on Canadian profit ₦182,725k
Commonwealth rate: 45,540 ÷ 182,72524.92%
Half the Nigerian rate15.00%
Relief rate (lower of the two)15.00%
Less: relief 15% × 182,725(27,408.75)
CIT payable91,302.75
TET @ 3% × assessable 424,71512,741.45
Total (₦'000)104,044.20
Foreign tax paid is added back, converted at the average rate. Claim within 6 years. A non-Nigerian company's relief: half the Commonwealth rate if that rate ≤ Nigerian rate; otherwise Nigerian rate − half the Commonwealth rate (28% → 14%; 50% → 5%).
The NTA credit (s.120 unilateral, s.122 treaty)

Credit = the lower of:

  1. Nigerian tax attributable to the foreign income = foreign income ÷ total income × Nigerian tax; and
  2. foreign tax paid.

Same figures under the NTA: Nigerian tax on the Canadian share ≈ 118,711.5 × 182,725 ÷ 395,705 = ₦54.82m against foreign tax ₦45.54m, so the credit is ₦45.54m, against ₦27.41m under the old half-rate rule.

  • Any country now qualifies, not just the Commonwealth.
  • Foreign tax is never deducted as an expense; where income is taxed on receipt, gross it up.
  • Only for a person resident in Nigeria that year; claim within 2 years after the YOA.
  • No credit for another country's global minimum tax top-up on a PE.
  • Treaty benefits only for a resident of the treaty partner who is the beneficial owner; treaty shopping denied.
Nigeria–UK DTA articleRule (asked Nov 2023)
Art. 6 Immovable propertyTaxable where the property is situated
Art. 7 Business profitsOnly in the state of residence unless there is a PE; then only profit attributable to the PE
Art. 8 Ships & aircraftOnly where the operator is resident
Art. 10 DividendsSource-state tax capped: 12.5% for a company holding 10%+ of voting power, 15% otherwise (the Study Text quotes Nigeria's reduced WHT as 7.5%)
Art. 11 InterestSource tax capped at 12.5%; interest to the other government exempt
Art. 12 RoyaltiesSource tax capped at 12.5%
Art. 13 Capital gainsEach state applies its domestic law, except ships and aircraft
Art. 14 Independent servicesState of residence unless there is a fixed base
Art. 16 / 17Directors' fees taxable where the company is resident; artistes and athletes where they perform
Art. 22The residence state gives credit for the other state's tax
Nigeria's 16 DTAs

Belgium, Canada, China, Czech Republic, France, Italy (air & shipping only), Netherlands, Pakistan, Philippines, Romania, Singapore, Slovakia, South Africa, Spain, Sweden, United Kingdom.

Benefits of DTAs
  • Encourage foreign investment
  • Prevent evasion through information exchange
  • Promote trade and growth
  • Strengthen diplomatic ties
  • Clarify taxing rights
  • Reduced WHT rates
  • Dispute resolution through MAP
Resolving DTA vs domestic-law conflicts
  • Mutual agreement procedure between competent authorities
  • Arbitration if MAP fails after two years
  • Treaty prevails once domesticated: a state cannot plead its internal law (Vienna Convention art. 27)
Vienna Convention on the Law of Treaties (pitfall May 2026)
  • Codifies how treaties, including tax treaties, are interpreted, giving courts a uniform approach
  • Sets operational rules for drafting, defining, amending and interpreting treaties
  • Pacta sunt servanda: every treaty in force binds the parties and must be performed in good faith (art. 26)
  • A state cannot use its internal law to excuse non-performance (art. 27)
  • Interpretation in good faith, by ordinary meaning, in context and in light of object and purpose (art. 31); supplementary means (art. 32)
  • Supports dispute resolution through negotiation, mediation, arbitration and MAP
DTR pitfalls
  • May 2022 Q6: computing relief on an overseas branch's foreign tax. Compute the foreign rate on the branch's own adjusted profit, compare, then apply the relief rate to the branch's total profit.
  • Nov 2022 Q6: residence in Singapore does not exempt a company with a Nigerian PE. Benefits under that treaty: reduced WHT, PE threshold, MAP, credit.
  • Nov 2023 Q4(b): foreign income exempt from Nigerian tax: dividends, interest, rent and royalties brought in through approved channels.
  • May 2026 Q3(b): information for s.44 relief: who qualifies, the two rate formulas for Nigerian and non-Nigerian companies, reciprocity, the 6-year claim.

Chapter 16 · TP Regulations 2018; NTA ss.191–192, 202

Transfer pricing

In plain words

Transfer pricing is the price charged between companies in the same group for goods, services, loans or royalties. Because one owner controls both sides, prices can be set to move profit to wherever tax is lowest. The arm's length principle requires the price that unrelated parties would have agreed. The TP Regulations 2018 set out the methods, documents and penalties that enforce it.

Objectives of the Regulations
  1. Tax Nigeria's fair share of the economic activity done here, including with related persons
  2. Give the authority tools against over- and under-pricing
  3. Reduce economic double taxation
  4. A level field between MNEs and independent firms
  5. Certainty for taxpayers
Scope: controlled transactions
  • Sale and purchase of goods and services
  • Sale, purchase or lease of tangible assets
  • Transfer, licence or use of intangibles
  • Provision of services
  • Lending and borrowing
  • Manufacturing arrangements
  • Anything else affecting profit or loss

Commenced 12 March 2018 (2012 Regulations from 2 August 2012). The Study Text cites documentation for connected transactions of ₦300m or more a year.

Methods

Traditional transaction: comparable uncontrolled price; resale price (resale price less an arm's-length gross margin); cost plus.

Transactional profit: transactional net margin (net margin on costs, sales or assets vs comparables); profit split (combined profit shared as independents would).

Comparability factors: characteristics of the goods or services; functional analysis (functions, assets, risks); contract terms; economic circumstances; business strategies.

Connected persons (s.202 NTA)

Relatives and spouses; trustee and settlor; partners; a person and a company he or relatives control; companies under common control; one company participating in another's management, control or capital; persons acting on another's directions or with practical control. Not connected merely as employee or client. New special cases: digital platforms coordinating pricing, an SEP and its foreign principal, IP licensor and licensee, JV partners contributing 25% or more.

s.191: transactions between connected persons not at arm's length are artificial and may be disregarded. s.192: related-party arrangements must be at arm's length and reported.

Documents (pitfall May 2023: the disclosure form)

Declaration form (by 30 June, for the previous year): reporting entity; immediate parent; directors; major shareholders and related parties; ownership structure; subsidiaries and connected persons; external auditors; tax consultant; company secretary; declarant; declaration.

Disclosure form (by 30 September): reporting entity; income from controlled transactions; costs of controlled transactions; summary of transactions with connected persons; TP method and documentation; basic financials of the entity and group; declarant; declaration.

Also: TP policy (group or local, forward-looking) and a TP compliance report. The burden of proving arm's length is on the taxpayer.

TP offence (pitfall Nov 2025)Penalty
No declaration form₦10m first month + ₦10,000 a day
No disclosure form or documentationHigher of ₦10m or 1% of transactions not disclosed, + ₦10,000 a day
Incorrect disclosureHigher of ₦10m or 1% of transactions incorrectly disclosed
Information not supplied on notice1% of each transaction concerned + ₦10,000 a day
Updated declaration not filed₦25,000 a day
Disputes & APAs

Object to the Head of the TP Unit within 30 days; the Head decides whether to refer to the Decision Review Panel; then the TAT. Also: advance pricing agreements (unilateral or bilateral, with FAR analysis, method, critical assumptions and duration; no adjustment while followed), MAP, competent-authority talks, arbitration, mediation.

Non-arm's-length practices (Nov 2022)
  • Over- or under-invoicing goods and services
  • Excessive management, technical or royalty fees
  • Interest on intra-group loans at non-market rates
  • Shifting expenses or profits between group members
  • Transfer of intangibles at undervalue

Chapters 17, 24

BEPS, CbCR, thin capitalisation, treaty shopping, tax havens

Base erosion shrinks the taxable profit reported in a country; profit shifting moves profit to a low-tax country. MNE groups dominate because they have the network of entities, the capital to build structures and the profits to pay for advice.

In plain words

Base erosion and profit shifting (BEPS) describes how multinational groups cut their tax by moving profit from high-tax countries to low-tax ones, using gaps and mismatches between countries' rules. The OECD and G20 answered in 2015 with 15 actions to close those gaps. Thin capitalisation, treaty shopping and tax havens are three of the main tools; country-by-country reporting is one of the main remedies.

Techniques, not examples (Nov 2021)
  1. Trademark and technology licensing: IP parked in a low-tax entity charging royalties to the group
  2. Thin capitalisation: subsidiaries funded with debt, so interest strips profit
  3. Hybrid mismatch arrangements: instruments or entities treated differently by two countries, giving double non-taxation or double deduction
  4. Assets in entities without substance in preferential regimes

Contributing factors: the digital economy and weak international cooperation.

OECD's 15 actions
  1. Digital economy: identify how digital business defeats existing rules and develop options covering direct and indirect tax (now Pillars One and Two).
  2. Hybrid mismatches: neutralise instruments and entities treated differently by two countries, which give double non-taxation, double deductions or long deferral.
  3. CFC rules: strengthen controlled foreign company rules so profits parked in low-tax subsidiaries are taxed in the parent's country.
  4. Interest deductions: limit excessive interest on related- and third-party debt (the source of Nigeria's 30% of EBITDA cap).
  5. Harmful tax practices: require substantial activity for preferential regimes and exchange rulings spontaneously.
  6. Treaty abuse: model treaty provisions and domestic rules to deny treaty benefits in inappropriate cases such as treaty shopping.
  7. Artificial avoidance of PE status: widen the PE definition to catch commissionaire arrangements and split activities.
  8. TP – intangibles: align returns from intangibles with where value is created.
  9. TP – risks and capital: stop profit following risks or capital allocated by contract alone.
  10. TP – other high-risk transactions: recharacterise transactions independents would not undertake; guidance on profit splits and management fees.
  11. Measuring BEPS: collect and analyse data on its scale and on the effect of the actions.
  12. Mandatory disclosure: require taxpayers and advisers to disclose aggressive tax planning arrangements.
  13. TP documentation and CbCR: master file, local file and country-by-country report to give tax authorities a full picture.
  14. Dispute resolution: make mutual agreement procedures faster and more effective.
  15. Multilateral instrument: one convention that amends many bilateral treaties at once to apply the treaty-related actions.
Country-by-country reporting
  • Ultimate parent resident in Nigeria with consolidated group revenue of ₦160bn or more files a CbC report within 12 months of year end.
  • Late filing: ₦10m, then ₦1m a month.
  • Every resident constituent entity notifies the NRS whether it is the UPE or surrogate, or names the reporting entity, by the last day of the reporting year.
  • OECD Action 13 guidance governs gaps.
Thin capitalisation

Deliberately high gearing so interest deductions shift profit. Harms creditors (more risk) and tax authorities (lost base). Nigeria's rule since FA 2019 and kept by the NTA: interest to foreign connected lenders capped at 30% of EBITDA, excess carried 5 years; banks and insurers excluded (pitfall May 2023).

Treaty shopping

A resident of a third country routes income through a treaty country to claim benefits not meant for it (May 2024). Countries curb it with beneficial-ownership tests, limitation-on-benefits clauses, the principal purpose test (MLI), substance requirements and domestic anti-avoidance rules. The NTA grants treaty benefits only to a resident beneficial owner.

Tax havens (pitfall Nov 2020: OECD factors)
  • No or only nominal tax on the relevant income
  • Laws or practices that block effective exchange of information
  • Lack of transparency in legislative, legal or administrative provisions
  • No requirement for substantial local activity

Types: primary, semi and conduit havens. Uses: personal residency, corporate residency, asset holding through trusts and companies.

Measures against havens (May 2025)
  • CFC rules taxing undistributed haven profits
  • Transfer pricing and thin capitalisation rules
  • Exit charges on emigrating individuals, trusts and companies
  • Automatic exchange of information (CRS, FATCA)
  • Black and grey lists; defensive WHT
  • Substance and beneficial-ownership requirements

Chapters 18–19

Regional blocs and international tax policy

In plain words

Regional integration is when neighbouring countries agree to trade and cooperate more closely through shared rules and institutions. It comes in stages, from a free trade area up to a full economic union, and each stage changes tariffs and tax policy. ECOWAS and the African Continental Free Trade Area (AfCFTA) are the blocs that matter for Nigeria. International tax policy asks the wider question of how countries share taxing rights and cooperate.

Free trade areaInternal barriers removed; each member sets its own external tariff. NAFTA.
Customs union+ a common external tariff on non-members. ECOWAS CET.
Common market+ free movement of labour and capital.
Economic union+ common economic policies. The EU.
Pitfall: Nov 2020 Q3

Candidates could not separate a common market from an economic union. The common market frees labour and capital; the economic union adds harmonised economic policy on top. Also distinguish regional integration (states sharing institutions and rules, which may be political or environmental) from a trade bloc (a free-trade zone formed by tariff and trade agreements).

ECOWAS & the common external tariff

Treaty signed in Lagos on 25 May 1975. Aims: suppress customs duties, create a CET, harmonise economic and financial policies, form a monetary zone. CET adopted 25 October 2013 with five bands (0% essential social goods, 5% primary necessities and raw materials, 10% intermediate goods, 20% final consumer goods, 35% specific goods for economic development) on the HS 2012 nomenclature.

Trade defence measures (pitfall May 2024): safeguard measures; anti-dumping measures; anti-subsidy and countervailing measures; supplementary protection measures.

AfCFTA

55 countries. Objectives: a single continental market, more intra-African trade, competitiveness, integration, sustainable development. Runs through protocols (goods, services, dispute settlement), instruments (rules of origin, tariff concessions, a non-tariff-barrier reporting tool) and institutions (Assembly, Council of Ministers, Committee of Senior Trade Officials, technical committees).

Challenges: lost tariff revenue, adjustment costs, competition for small firms, implementation, non-tariff barriers, infrastructure, institutional capacity. Against ECOWAS in trade in goods (pitfall May 2021): AfCFTA is a continental free trade area liberalising tariffs under rules of origin; ECOWAS is a customs union with a CET and its own trade liberalisation scheme.

Benefits / costs of blocs

Benefits: trade creation, jobs, easier consensus, certainty for investors. Costs: trade diversion to less efficient members, employment shifts, loss of sovereignty.

Organisations shaping tax policy (pitfall May 2026, Nov 2024)
  • OECD: Model Convention, BEPS, Global Forum, TP guidelines
  • UN: Model Convention for developing countries; UN tax convention work
  • IMF: policy advice and technical assistance
  • World Bank: Global Tax Program, financing reforms
  • ATAF: African tax administrations' cooperation
  • WTO/GATT: trade rules, non-discrimination, customs valuation
  • EU, AU, ECOWAS, WCO
Information exchange & neutrality

Exchange on request, automatic (CRS; Nigeria signed the MCAA in August 2017) and spontaneous. Nigeria's framework sits under the Data Protection Act (adequacy, consent, AG whitelist). Neutrality (Nov 2023): a neutral tax does not change behaviour. Applications: broaden the base and lower rates; prefer credits to deductions when encouraging behaviour; tax undesired activities deliberately.

Jurisdiction rests on residence (worldwide income) or source (income earned within borders). Its limits are geographical, subject-matter and personal. International tax policy aims at fairness, efficiency, neutrality, competitiveness and revenue.

Other blocs the syllabus compares
  • European Union: 27 states with common economic, social and security policies. Goals: peace and citizens' well-being; sustainable growth with price stability and full employment; fighting social exclusion; scientific progress; economic, social and territorial cohesion.
  • NAFTA (US, Canada, Mexico, 1994): a free trade area aiming at freer trade and wider choice, lower prices and better quality, stronger health and safety standards, economic stability, and a market driven by supply and demand rather than barriers.
  • Why AfCFTA differs: it is continental and still building its rules of origin and tariff schedules, while the EU is an economic union and NAFTA a mature free trade area.
D

Current issues & emerging trends

10% · Study Text ch. 20–21, 30

International initiatives, SDGs and ESG

In plain words

This part tests awareness of recent developments rather than computation. It covers international cooperation on enforcement (joint audits, information exchange, capacity building), how technology is changing tax work, and how tax supports the UN Sustainable Development Goals and responsible ESG conduct in the extractive industries. Answers are lists of explained points, so clear headings and one point per mark matter most.

Tax Inspectors Without Borders

An OECD and UNDP initiative that builds audit capacity in developing countries. Serving or recently retired audit experts work alongside local officials on live audits, including TP and sector cases. The host country leads and sets the scope; experts never replace local staff.

Cooperative compliance (pitfall Nov 2025)

A relationship between the revenue authority and, usually, a large taxpayer based on trust, transparency and mutual understanding. The taxpayer runs a sound tax control framework and discloses risks early; the authority gives timely, certain responses. Result: fewer disputes, lower costs, earlier certainty.

Simultaneous tax examination

Two or more countries examine the same taxpayer at the same time, each independently, and exchange information. It encourages compliance, exposes evasion and fosters cooperation, but needs careful coordination, protects confidentiality and copes with complex laws. Joint audits go a step further.

Also in this chapter
  • Common Reporting Standard (CRS): banks collect data on accounts held by foreign tax residents and send it to their tax authority, which passes it to the residents' home countries every year. Nigeria signed the Multilateral Competent Authority Agreement in August 2017, so it now receives data on Nigerians' accounts in more than 95 jurisdictions, including Bermuda, the Cayman Islands, Luxembourg and Mauritius, and Nigerian banks report foreigners' accounts in return.
  • FATCA (US, 2010, part of the HIRE Act): US citizens must report foreign accounts and assets; foreign financial institutions must report US account holders to the IRS (directly or under an intergovernmental agreement) or face exclusion and penalties. It shows how one country's rules reach banks worldwide.
  • Mutual agreement procedure (MAP): under a treaty, a Nigerian taxpayer taxed contrary to the treaty asks the competent authority (the Minister of Finance or delegate) to negotiate a solution with the other country.
  • Disruptive technologies: digital platforms and app stores make transactions hard to track; AI and data analytics help authorities spot risk but need investment and skills; blockchain and crypto are hard to trace and value; cloud computing blurs where income is earned. Benefits: efficiency and better compliance. Risks: data security. The future is "TaxTech" built through collaboration between authorities and the private sector.
Technology in tax practice (May 2022, May 2023)
  • Cloud tax management platforms and e-filing (the NRS e-filing system)
  • AI and robotic process automation for data collation and analysis
  • Data analytics and visualisation for risk review
  • E-invoicing and fiscalisation links

Impact: speed, accuracy, real-time compliance, new advisory lines. Challenges: cost, cyber risk, skills gaps, unreliable power and internet.

Taxation and the SDGs (May 2026)

Roles: raise revenue for development spending; redistribute income through progressive taxes; change behaviour (tax pollution, reward clean activity); promote growth through targeted incentives; fund public goods such as health, education and infrastructure.

Strategies: green taxes (carbon), incentives for sustainable investment, progressive taxation.

Challenges and mitigation in Nigeria: limited tax capacity → invest in administration and technology; evasion and avoidance → transparency and information exchange; digital economy → SEP and digital rules; the informal sector → simplified regimes and registration drives; weak revenue mobilisation → broaden the base, fewer exemptions. UNDP's Tax for SDGs initiative supplies an assessment tool and runs TIWB with the OECD.

ESG in the extractive industries

Penalties for non-compliance: fines (the Climate Change Act 2021 targets net zero by 2050–2070, adds a carbon tax and requires a sustainability officer); litigation and regulatory audits; loss of licences; reputational damage; supply chain and operational disruption. Disputes can go to ADR.

EITI Standard: disclosure of revenue collection and allocation, contracts and licences, beneficial ownership, production, social spending, state-owned enterprises, commodity trading, open data. The 2023 Standard adds energy transition, corruption risk, gender equity and revenue collection.

Sustainable practices: benefits are competitive advantage, motivated staff, profitability, reputation, resource efficiency; challenges are inconsistent regulation, low awareness and cost.

The 17 Sustainable Development Goals (UN, 2015)

No poverty · Zero hunger · Good health and well-being · Quality education · Gender equality · Clean water and sanitation · Affordable and clean energy · Decent work and economic growth · Industry, innovation and infrastructure · Reduced inequalities · Sustainable cities and communities · Responsible consumption and production · Climate action · Life below water · Life on land · Peace, justice and strong institutions · Partnerships for the goals.

Principles: intergenerational equity and environmental stewardship. Achieved through renewable energy, sustainable agriculture and responsible consumption. A fourth taxation strategy is tax transparency, so taxes are seen to fund development.

UNDP Tax for SDGs (2021): helps countries use tax to mobilise domestic resources; offers an SDG taxation framework and assessment tool and an annual Tax for SDGs Dialogue; runs TIWB with the OECD (over $2bn extra revenue raised since 2015); covered 25 countries in 2022. Expected results: more domestic revenue, stronger administration against evasion and illicit flows, tax policy aligned with the SDGs, digitalised tax services and gender-equal outcomes.

Why ESG matters in the extractive industries

Need: risk management, long-term sustainability, stakeholder expectations, regulation (NESREA, NUPRC, NEITI) and brand value.

Environmental compliance: environmental impact assessments, waste management, oil-spill response plans, biodiversity protection. Social: community engagement, livelihood restoration with fair compensation, social investment, cultural heritage protection. Governance: transparency, anti-corruption policies, board oversight.

Benefits of sustainable practice: reputation, cost savings, innovation, risk management, access to capital, talent, avoiding "greenwashing". Challenges: high initial cost, complex supply chains, varied regulation, aligning stakeholders, measuring impact, short- vs long-term pressure. Best practice: adopt EITI and IFC Performance Standards, strategic planning, stakeholder engagement, technology, partnerships, continuous monitoring.

History: Carson's Silent Spring (1962); socially responsible investing (1970s); Brundtland definition of sustainable development (1987); Rio Earth Summit (1992); Elkington's triple bottom line (1994); GRI (1997); "Who Cares Wins" coins ESG (2004); UN PRI (2006); SASB standards (2010s); ISSB's IFRS S1 and S2 (2023).

E

Tax management & planning

10% · Study Text ch. 22–27

Chapter 22 · NTA s.189

Mergers, acquisitions and reorganisations

In plain words

A merger joins two or more companies into one; an acquisition is one company buying control of another. Under the normal rules such deals would trigger cessation of one business, commencement of another, gains on the assets transferred and VAT. The law relieves genuine reorganisations, especially between related companies, so tax does not block a commercial combination, but it attaches conditions and needs the tax authority's clearance.

s.189 NTAMergerSale of trade causing cessationSale of assets, no cessation (≤ residue + unused CA)
Commencement / cessation rulesNeither appliesCessation applies to the sellerNot applicable
Chargeable gainNoneNormal rulesNone
Value for allowancesResidue, over remaining tax lifeSale or transfer valueRemaining tax life, in the buyer's hands
Unused capital allowancesPass to the survivorLostPass to the buyer; seller cannot claim
Unabsorbed lossesPass, if incurred by the merged businessLost—
WHT credit notesPass to the merged businessLost—
VATNot a supplyNot a supplyNot a supply
Related-party reorganisation (pitfall May 2025)

Concessions: no commencement or cessation rules; assets deemed transferred at residue the day after transfer; no VAT and no gain on transfers between related parties.

Conditions (FA 2019, CITA s.29(9)): related for at least one year before the reorganisation; no disposal of the assets for one year after; breach revokes the concessions.

Powers of the tax authority (pitfall Nov 2022)
  • No merger, takeover, transfer or restructuring may go ahead without the authority's consent or direction.
  • Clearance of all taxes due, including on gains, must be obtained first.
  • The authority may give directions, including security for tax.

Basis periods: a merger is neither commencement nor cessation, so preceding year basis continues; a brand-new surviving company starts its first period from commencement. Upstream petroleum: the acquirer's period starts on the transfer date.

Concepts and types
  • Merger: the assets, liabilities and businesses of two or more companies are vested in one company, which may or may not be one of them.
  • Acquisition: one company buys all or most of another's equity; above 50%, the target becomes its subsidiary.
  • Horizontal merger: companies in the same line of business (Chartered Bank and IBTC became Stanbic IBTC).
  • Vertical merger: a supplier and its customer in the same industry (a soft-drink maker and a bottle maker).
Regulators and filings
  • FCCPC: the main M&A regulator under the Federal Competition and Consumer Protection Act; reviews competition effects.
  • SEC: deals involving public companies: fairness, transparency, investor protection; annual, quarterly and material-event filings.
  • CAC: annual returns and notices of changes in directors and shareholding.
  • CBN and NAICOM: approve deals in banking and insurance.
  • Tax authorities (NRS, State IRS, FCT-IRS): notify any change in particulars within 30 days (s.9 NTAA) and obtain clearance.

Examples the Study Text cites: Access Bank and Diamond Bank; Oando's acquisition of ConocoPhillips' Nigerian assets (2012, over $1.5bn); MTN's acquisition of VGC Communications (2008); Stripe's acquisition of Paystack ($200m); Exxon–Mobil (1999); Glaxo Wellcome–SmithKline Beecham (2000); Microsoft–Activision Blizzard (2023). On a takeover by a new company, also mention cessation of the old trade, treatment of allowances and losses, stamp duties on transfers, and VAT and WHT on advisers' fees.

Chapter 24 · NTA s.191; NTAA s.46

Planning, avoidance and evasion

In plain words

Tax planning, avoidance and evasion sit on a scale. Planning is arranging your affairs lawfully to pay less tax, in the way the law intends. Avoidance is legal on its face but uses gaps against the law's purpose, and the tax authority may set it aside. Evasion is illegal: hiding income, inflating costs or failing to file. Questions ask you to define each, give examples and state the consequences.

Tax planning

Lawfully arranging affairs to reduce tax within the letter and spirit of the law: timing asset purchases and disposals, using incentives (EDI, free zones), roll-over or reinvestment exemptions, meeting deadlines to avoid penalties, choosing structure and location.

Tax avoidance

Legal but against the intent of the law, exploiting gaps (artificial transactions, thin capitalisation, treaty shopping). Countered by specific anti-avoidance rules (certain, but narrow) and a general rule (fewer laws, wider reach). Mandatory disclosure of arrangements that give a relief, a repayment or avoid a charge.

Tax evasion

Illegal: understating income, overstating expenses, fictitious transactions, failure to file, diverting WHT or VAT collected. Leads to back duty assessments with no time limit, penalties, interest and prosecution.

Pitfall: Nov 2021 Q3

Candidates defined the concepts but not their tax implications. Planning: lower legitimate tax, no penalty. Avoidance: transactions disregarded under s.191, TP adjustments, interest disallowed, additional assessments. Evasion: penalties, interest, prosecution, unlimited look-back.

Tax planning checklist (Study Text 24.2)
  • Timing of asset purchases, disposals and capital allowance claims.
  • Hiring instead of buying assets: the full hire charge is deductible.
  • Specific rather than general provisions, so they are deductible.
  • PAYE and WHT deducted correctly, to avoid penalties.
  • Critical dates: returns, objections, PAYE, WHT, VAT, NSITF.
  • Gains: use reinvestment reliefs and exemption thresholds.
  • Incentives and exemptions: economic development credit, free zones, agricultural exemption, NTA Chapter 8 exemptions, government bonds.
  • Remuneration structure and benefits in kind.
Anti-avoidance in the NTAA 2025
  • Mandatory disclosure (s.30): anyone entering a transaction whose main purpose is a tax advantage must disclose it. A tax advantage includes a relief, a repayment, avoiding or reducing a charge or assessment, deferring payment, or avoiding a duty to deduct tax.
  • Artificial transactions (s.46): the authority may disregard artificial or fictitious transactions; deals between connected persons not on arm's-length terms are deemed artificial.
  • Prohibited avoidance arrangements (s.47): a general rule. Where the main purpose is a tax benefit contrary to the law's object, the authority may adjust, disregard or recharacterise the arrangement.
  • Specific vs general rules: specific rules are certain and easy to amend but make the law complex and invite new loopholes; general rules are fewer and catch future schemes but are vague and depend on officials' discretion.
  • Case law: Lord Clyde in Ayrshire Pullman v CIR (no one must arrange affairs to give the Revenue "the largest possible shovel"); Belgore CJ in FBIR v American International Insurance Co ("Tax is an obligation, not a duty").

Non-tax factors in choosing a location (May 2023, six marks): political and economic stability; physical, legal and financial infrastructure; limited exchange controls; access to markets and raw materials; skilled labour; banking and communications; language and legal system; investment protection. Direct taxes (income tax, CIT, HT) are borne by the person who pays them; indirect taxes (VAT, customs and excise, stamp duties) are passed on in the price.

Chapters 23, 25, 26, 27

Practice management, audit and investigation, ethics, tax accounting

In plain words

This section covers the professional side of tax work: the legal and ethical duties of an accountant in tax practice, how to take on and manage clients, and how tax authorities audit and investigate taxpayers. It also covers how tax appears in financial statements, including deferred tax. These are discussion questions, marked one point per mark.

Running a tax practice (pitfall May 2026: legal requirements)

Legal requirement: under ICAN's code, a chartered accountant in public practice must not engage in any business or activity that impairs, or might impair, integrity, objectivity or the profession's reputation. A practitioner acting for reward must be accredited as a tax practitioner (NTP; JRB guidance on accreditation).

Engagement: client's appointment letter → engagement letter (scope, deliverables, fees) → introduction letter to the tax office.

Risks: lack of expertise, lack of attention to detail, poor documentation, unpredictable income, technology and cyber risk, liability for wrong advice.

Benefits: own schedule, financial upside, choice of clients, your own vision.

Mitigation: work only within competence; quality control and review; documented filing positions; engagement letters; professional indemnity insurance; continuing education; regular updates to strategy as laws change.

New client files (Nov 2024)

From the client: certificate of incorporation, CAC forms (status report, allotment, registered office), memorandum and articles, TIN and registration evidence, audited accounts, prior tax computations, assessments, receipts, WHT credit notes and tax clearance certificates.

Kept by the consultant: engagement letter, permanent file of client details, correspondence with the tax office, computations and working papers, objections and appeals history, payment and clearance records.

Disclosure to third parties only with client consent, when required by law (court order, tax authority notice), in a professional duty (disciplinary or quality review, defending yourself), or in the public interest (fraud, money laundering).

Tax audit

Stages: selection → preliminary review of the file (ratios: liquidity, efficiency, gearing, profitability) → notification → pre-audit meeting → field audit → interim reports → post-audit review → reconciliation meetings → final report and additional assessments → objections.

Objectives: confirm returns are correct, enforce compliance, detect under-declaration, educate taxpayers, refer frauds for investigation, deter non-filing.

NRS document schedule (pitfall Nov 2023): audited accounts, management accounts, chart of accounts, trial balances, general ledger, fixed asset register, staff and payroll lists, WHT and VAT schedules with receipts, contracts and agreements, bank statements, prior computations and assessments, TP documentation.

Investigation and back duty

Pre-investigation meeting (Nov 2024): explain the purpose, confirm background facts, agree the scope and timetable, request documents, hear the taxpayer's side, seek cooperation.

Stages: surveillance → notification → evidential audit → case preparation → arraignment; terminated if evidence is thin or no crime is shown.

Back duty (Nov 2021, May 2025): an audit of past returns where errors, omissions or deliberate understatement are suspected; covers up to 6 years, unlimited for fraud; records re-examined and tax recomputed; shortfall assessed with penalty and interest; objection and appeal rights apply.

Powers: notices to file, attend, produce books and give access; distraint (goods held 14 days before sale; land only with a High Court order); search and seizure on reasonable suspicion.

Ethics (pitfall Nov 2023, May 2024)

IESBA fundamental principles: integrity, objectivity, professional competence and due care, confidentiality, professional behaviour.

Threats: self-interest, self-review, advocacy, familiarity, intimidation. Safeguards: from the profession or legislation (education, CPD, disciplinary regimes, reviews), from the firm (quality control, rotation, independent review, fee policies) and in the engagement (second partner review, declining work, documenting judgements).

Punitive measures (May 2022): ICAN disciplinary tribunal (reprimand, suspension, expulsion), penalties under the tax laws for aiding offences, criminal prosecution.

Tax accounting & deferred tax (pitfall Nov 2022)

Deferred tax arises from temporary differences, mostly carrying amount vs tax written-down value.

  • Deferred tax liability = (carrying amount − TWDV) × 30%
  • Deferred tax asset = (TWDV − carrying amount) × 30%
  • Charge in profit or loss = current CIT + development levy ± prior-year adjustments + movement in deferred tax

Compute depreciation correctly before anything else: the 2022 report says that is exactly where candidates failed. Disclose current and deferred tax separately; misleading disclosure risks penalties, qualified opinions and reputational damage.

The five threats, defined
  • Self-interest: a financial or other interest improperly influences judgement, such as undue dependence on one client's fees.
  • Self-review: the accountant will not properly evaluate their own, or their firm's, earlier work.
  • Advocacy: promoting a client's position so far that objectivity is lost.
  • Familiarity: a long or close relationship makes the accountant too sympathetic or too accepting.
  • Intimidation: actual or perceived pressure deters objective action.

Conflicts of interest arise when two clients' interests conflict on a matter, or the practitioner's own interest conflicts with a client's. Identify, disclose, get consent or decline, and document.

NOCLAR: suspected breach of tax law
  1. Become aware (see it, but do not go looking for it).
  2. Understand the matter and the law involved.
  3. Raise it with management or those charged with governance.
  4. Assess their response.
  5. Decide further action: report to an appropriate authority or withdraw from the engagement.
  6. Document the matter, discussions and decisions.

Employed accountants first follow internal protocols, escalating above a superior who is involved; senior accountants carry wider duties. Sanctions for breaches include fines, reprimand, suspension, expulsion and withdrawal of the practising licence.

Data privacy (Nigeria Data Protection Act 2023)
  • Lawful, fair and transparent processing with informed consent.
  • Purpose limitation and data minimisation.
  • Accuracy and storage limitation.
  • Confidentiality and integrity: protection by design, impact assessments for high-risk processing, breach notification.
  • Data subjects' rights to information, access and rectification.
  • Oversight: the Nigeria Data Protection Commission registers major controllers and imposes penalties.
Technology in practice and its limits
  • Cloud tax platforms: no servers to buy or maintain; access anywhere.
  • AI and robotic process automation: collate and analyse data faster with fewer errors.
  • Blockchain: tamper-proof transaction records.
  • Benefits to taxpayers: easier compliance, lower cost, efficiency, compliance without physical contact.
  • Challenges: poor connectivity and power, cybersecurity fears, digital-skills gaps, cost, systems not flexible enough for changing laws.
  • Objections may now be served by courier or electronically (FA 2019 and 2020; NTAA 2025).
The tax account in the books (Study Text 27.2–27.3)

The tax account opens with unpaid tax brought forward and is credited with this year's provisions for income tax (Dr profit or loss) and development levy, plus any prior-year under-provision; it is debited with over-provisions, cash paid and WHT credit notes set off (Dr tax account, Cr WHT receivable). The closing balance is the tax payable in the statement of financial position. Deferred tax is posted to its own account. Wrong or misleading tax disclosure risks penalties, qualified audit opinions and loss of credibility.

F

Extractive industries

balance of the grid · Study Text ch. 28–30

Chapter 28 · PIA 2021; NTA ss.68–122

Oil and gas: hydrocarbon tax and upstream CIT

Converted leases pay hydrocarbon tax and CIT; unconverted OPLs and OMLs stay under petroleum profits tax until they expire or convert. The NTA now houses all three charges; the PIA keeps licensing, royalty, host communities and conversion.

In plain words

Oil and gas profits are taxed under special rules because they are large and come from a national resource. Under the Petroleum Industry Act 2021, an upstream company with a converted lease pays two taxes: hydrocarbon tax on profit from crude oil and associated liquids, and ordinary company income tax. Hydrocarbon tax has its own allowable-cost list, a cap on total costs (the 65% cost-price ratio) and a per-barrel production allowance. Leases not yet converted stay under the older petroleum profits tax.

Who pays what
  • HT rate (s.72): 30% for petroleum mining leases (PML), onshore and shallow water; 15% for petroleum prospecting licences (PPL) and marginal fields.
  • CIT: 30% on all upstream operations, plus development levy 4% of assessable profit.
  • PPT (unconverted): 85% of chargeable profit; 65.75% for up to 5 years before pre-production costs are amortised.
  • Deep offshore (water deeper than 200m): no HT, CIT only. Frontier acreage: no HT until reclassified.
  • HT is charged only on crude oil, field condensates and NGLs from associated gas upstream of the measurement point, plus balancing charges. Not on associated gas itself or non-associated gas and its liquids.
Conversion and transition
  • 18-month window from 16 August 2021 for voluntary conversion; conversion is automatic on expiry (Opobo: OML expired 31 Dec 2022, PML from 1 Jan 2023).
  • Year of conversion: PPT from 1 January to the conversion date, PIA after it.
  • Mixed licences: one return with three computations (PPT, HT, CIT).
  • PPT losses and unrecouped allowances carry into HT and CIT; investment tax credit does not.
  • Accounting period is the calendar year; the first starts on the first sale or bulk disposal. HT is on actual year basis, paid in 12 monthly estimates from March with a 13th balancing payment within 21 days of assessment.
Allowed for HT (s.68 NTA / s.263 PIA)
  • Royalties incurred and paid; production-sharing payments to the Federation Account
  • Concession rentals under the lease or licence
  • Production costs; terminalling
  • Repairs of plant, machinery and fixtures; renewal, repair or alteration of production implements and utensils
  • Drilling costs, tangible and intangible, of the first exploration well and first two appraisal wells in a field (later wells are qualifying drilling expenditure for allowances)
  • Gas reinjection wells (ratified by NUPRC)
  • Levies, stamp duties and fees to any government (State ground rent)
  • Acquisition of geophysical, geological and geochemical data
  • Decommissioning and abandonment fund contributions (deductible only with at least 15% in a Nigerian-bank escrow)
  • Host Community Development Trust (3% of prior-year opex), Environmental Remediation Fund, NDDC
  • Excess cost brought forward under the CPR
Disallowed for HT (s.69 NTA)
  • Purchase of information on deposits (other than geological and geophysical data)
  • Penalties and gas flaring fees
  • Finance and bank charges, interest, arbitration and litigation costs, bad debts
  • Head office, affiliate and shared costs; R&D; shared indirect costs
  • Production bonuses, signature bonuses, lease or licence fees, assignment fees
  • Tax grossed up or borne for contractors
  • Capital, improvements, depreciation
  • Insurance recoveries; non-operational premises
  • Income taxes and development levy
  • Unapproved pension contributions; donations

For upstream CIT the list is wider: indirect and above-field costs, and interest, are allowed under ordinary rules; the CPR does not apply.

Hydrocarbon tax pro-forma, with the May 2026 figuresOpobo Petroleum, PML, 2024 YOA, ₦ million
Revenue at FISCAL price × barrels × ₦1,530/$
Crude oil: Bonny Light 10.8m × $75; Forcados 7.5m × $661,996,650
Condensates: OSO 3m × $33; Escravos 2.3m × $30257,040
NGLs from associated gas130,050
Gross revenue2,383,740
Less: allowable costs (incl. ⅔ of drilling for 3 appraisal wells, excess cost b/f 170)(1,277,140)
Adjusted profit (after CPR test below)1,106,600
Less: losses b/f (same class)(1,215)
Assessable profit1,105,385
Less: capital allowances, year 1,487 + b/f 480(1,967)
Less: production allowance, onshore 1,200 + shallow 1,100(2,300)
Chargeable profit1,101,118
Hydrocarbon tax @ 30%330,335.4
Revenue uses the fiscal price, not the actual selling price, when they differ. The crude and condensate lines here are the totals of the model answer's individual streams.
Cost-price-ratio limit: the NRS format
  1. A gross revenue × 65% = maximum: 2,383,740 × 65% = 1,549,431
  2. B total eligible costs = operating costs + allowances for the year + allowances b/f: 1,277,140 + 1,487 + 480 = 1,279,107
  3. C1 exempt costs (royalty, environmental remediation, NDDC, host community, concession rentals) = 404,350
  4. Costs subject to CPR = B − C1 = 874,757
  5. C2 = lower of (B − C1) and A = 874,757
  6. D allowable = C1 + C2 = 1,279,107 → no restriction here; any excess (B − D) is carried forward, and lost if operations end
Production allowance (Sixth Schedule PIA)
LeaseAllowance per barrel
Converted OML (concession)Lower of $2.50 and 20% of fiscal price
New lease, onshoreLower of $8 and 20% to 50m barrels; then $4
New lease, shallow waterSame, to 100m barrels
New lease, deep offshoreSame, to 500m barrels

Upstream allowances: plant, pipeline, building and drilling QCE at 20% a year for four years and 19% in year five, keeping 1%. Petroleum rights: 20% a year. HT computes allowances per field; CIT aggregates them. Losses for HT stay within their class: Class A (PML) or Class B (PPL); for CIT they are pooled across upstream terrains.

Gas utilisation investment allowance (pitfall Nov 2025)

25% of the actual cost of plant and equipment of NMDPRA-licensed midstream gas businesses (transport to and from processing plants, processing and conditioning plants, bulk storage of condensate, LPG or LNG not for sale). Granted on top of normal allowances without reducing asset value.

Conditions: the company incurred the cost itself; incurred on or after the Order's commencement (Oil & Gas Companies (Tax Incentives) Order 2024); proof of ownership; evidence of direct use in midstream gas processing or transport.

Lost if: sold to an unrelated business or put to other use within 5 years; not bona fide; the company is an end user of gas.

Non-associated gas greenfield (s.85 NTA)

First commercial gas by 1 January 2029: gas tax credit of the lower of $1.00 per Mcf or 30% of fiscal gas price where liquids ≤ 30 bbl/MMscf; $0.50 or 30% for 30–100 bbl; none above 100. Ten years, then a gas production allowance at the same rates. After 2029: allowance of $0.50 or 30%. Credit capped at tax payable, carried forward 3 years, not combined with AGFA incentives; NUPRC certifies liquids content.

Petroleum pitfalls
  • Nov 2022, May 2023, Nov 2023, May 2024, Nov 2024, May 2025: wrong allowable and disallowable costs in the CPR. Examiners point to the NRS circular on HT computation.
  • May 2026: wrong costs in "total operating cost". Only the first two appraisal wells count; signature bonus, gas flaring penalty, head office costs, donations, bank charges and depreciation are out.
  • Nov 2020: loss b/f and donations misplaced. Nov 2021: allowable PPT expenses.
  • Deep offshore implications (May 2024 Q2(b)): no HT, CIT and royalty only, longer production allowance threshold.

Chapter 29 · NMMA 2007; NTA s.64, Eighth Schedule; NEITI Act 2007

Mining

Mining companies pay CIT at 30% on preceding year basis and the development levy. Royalty is now imposed under the NTA at Eighth Schedule ad valorem rates (mostly 7.5%–15%) on the official or international price, is deductible, and is administered by the NRS. Contributions to environmental, rehabilitation, reclamation and closure funds are deductible if cash-backed in a dedicated account or trust managed by independent trustees.

In plain words

Solid minerals belong to the Federal Government, and companies mine them under titles issued by the Mining Cadastre Office under the Minerals and Mining Act 2007. Mining companies pay ordinary company income tax and the development levy, plus a deductible royalty on the value of minerals produced. Questions mix a computation with law points on titles, land, possession of minerals and incentives.

Incentives under the Minerals and Mining Act
  1. Tax holiday of 3 years, renewable for 2; dividends in the holiday free of WHT
  2. Retention of part of export earnings in a domiciliary account
  3. Customs and import duty exemption on mining plant (duty due if sold locally)
  4. Free transfer of foreign currency for certified loans and capital repatriation
  5. Expatriate remittance quota free of tax
  6. Accelerated allowance on mining expenditure: 95%, 5% retained (old CITA)
  7. Investment allowance 10% on plant (ended 31 Aug 2023)
  8. Approved infrastructure capitalised at 95% in year one, plus possible rural investment allowance
  9. 5% annual indexation of unused allowances (for early mines; later case by case)
  10. Royalty deferral with FEC approval
  11. Environmental and closure reserves deductible when spent and certified
Rules candidates misstated

Possession and purchase (May 2025). s.93: no one may possess a mineral unless it was won from their own title area, they hold a permit to possess or purchase, or they are an authorised agent or employee of such a person. s.94: no purchase without a licence to purchase minerals. s.95: small-scale lease output must be sold to a licensed mineral buying centre with receipts. s.96: buying centres keep records of purchases, sales and the source mine. s.92 exempts genuine specimens.

Fees (Nov 2025). Application fees and an annual service fee per cadastral unit. If unpaid, the Mining Cadastre Office gives 30 days' written notice, then records the default and revokes the title.

Priority of land (Nov 2025). Mining has priority over other land uses and is an overriding public interest under the Land Use Act. Where a lease is granted over land with an existing right of occupancy, the State Governor revokes that right within 60 days.

Administration

Mining Cadastre Office (sole licensing agency; registers for reconnaissance permits, exploration licences, mining leases, small-scale leases, quarry leases and water use permits; first come, first served by the priority register). Mines Inspectorate and Mines Environmental Compliance departments; State Mineral Resources and Environmental Management Committees. Titles: reconnaissance permit, exploration licence, small-scale mining lease, mining lease, quarry lease, water use permit. Environmental programmes are deemed approved after 60 days' silence; a second rejection can go to arbitration within 30 days.

NEITI (pitfall May 2024)

Vision: an accountable, effective, well-resourced and result-oriented NEITI. Mission: a culture of transparency, accountability, due process and zero tolerance for corruption in the extractive industries, for the benefit of citizens. Objectives: due process and transparency in payments to government; accountability in revenue receipts; eliminate corruption in determining, paying, receiving and posting revenue; transparency in how government applies the revenue; conformity with global EITI principles. Governed by a National Stakeholders Working Group (chair plus up to 14 members, quorum 8, meets quarterly).

Mining pitfalls
  • May 2022: certified exploration and processing expenditure in adjusted profit; mining incentives.
  • Nov 2023, Nov 2024: allowable and disallowable expenses for a mining company.
  • Penalties under the Act: illegal mining or false statements → licence revoked, fine of at least ₦20m and at least five years' imprisonment; ₦20,000 a day if continuing.
⌗

Toolkit

for the last week

Numbers sheet

Every rate, threshold and deadline in the 2026 Study Text that a question can turn on.

CompaniesFigure
Small company: turnover / fixed assets≤ ₦100m / ≤ ₦250m
CIT rate (other companies)30% (25% by order)
Development levy on assessable profit4%
Minimum ETR; scope15%; ₦50bn or €750m
Dividend tax rate30%
Interest cap; carry forward30% EBITDA; 5 YOAs
Donations cap10% of PBT
R&D cap5% of turnover
Pre-commencement costs window6 years
CA classes10% / 20% / 25%
Notional CA record1% of cost
Exempt-income share that triggers CA pro-rating≥ 10%
Cessation: tax due6 months
Post-cessation receipts disclosed1 month
Change of date notice30 days before due date
Agric exemption periodfirst 5 years
REIC distribution test75% in 12 months
Deemed distribution directionwithin 3 years
Gains, incentives, internationalFigure
Share disposal exemption< ₦150m proceeds & ≤ ₦10m gain
Loss of office exemption₦50m
Personal chattels₦5m or 3× min. wage
Replacement of destroyed assetwithin 3 years
Instalment spreading> 12 months
Startup holding period24 months
Foreign shares deemed Nigerian> 50% value, 365 days
EDI credit5% × 5 years
EDI period / extension5 + 5 years
EDI fee0.1% QCE, max ₦5m
FTZ customs-territory limit25%; nil from 2028
WHT non-treaty / treaty10% / 7.5%
Startup services WHT (final)5%
DTR claim (NTA)2 years after YOA
Commonwealth relief claim (old)6 years
CbCR threshold; deadline₦160bn; 12 months
TP declaration / disclosure30 Jun / 30 Sep
MAP to arbitrationafter 2 years
AdministrationFigure
Objection30 days
Authority response, else upheld90 days
Appeal to TAT; to FHC30 days each
TAT settlement window≤ 30 days
TAT hearing notice7 clear days
Security depositlesser of last year's tax, ½ disputed
Additional assessment6 years (fraud: none)
Refund paid; claim limit90 days; 6 years
Remit WHT / self-accountby 21st of next month
NTP transition before new tax3–6 months
ExtractiveFigure
HT: PML / PPL & marginal fields30% / 15%
PPT unconverted / pre-amortisation85% / 65.75%
Cost-price-ratio limit65% of revenue
Upstream CA20% × 4, 19%, 1% kept
Petroleum rights allowance20% a year
Host community trust3% of opex
Decommissioning escrow for deduction≥ 15%
GUIA25% of cost
Deep offshore threshold> 200m water
Conversion window18 months from 16 Aug 2021
Mining fee default notice30 days
Governor revokes occupancy right60 days
Mining tax holiday (NMMA)3 + 2 years

Penalties under the NTAA 2025

DefaultPenalty
Failure to register₦50,000 first month + ₦25,000 each further month; awarding a contract to an unregistered person ₦5m
Failure to file, or incomplete or inaccurate returns₦100,000 first month + ₦50,000 each further month
Failure to keep or produce books₦10,000 (individuals); ₦50,000 (companies)
Failure to deduct tax at source40% of the amount not deducted
Failure to remit by the 21st, or to self-accountThe tax + 10% a year + interest at the CBN MPR; on conviction up to 3 years or a fine of at least the principal plus up to 50%
Refusing access to deploy technology (after 30 days)₦1m first day + ₦10,000 a day
Not using the fiscalisation system₦200,000 + 100% of the tax + MPR interest
Ignoring notices; refusing information₦100,000 + ₦10,000 a day; ₦200,000 + ₦10,000 a day
Failure to notify a change of address within 30 days₦100,000 first month + ₦50,000 each further month
Virtual asset service provider default₦10m first month + ₦1m a month, or licence suspension
Failure to stamp10% of unpaid duty + MPR interest
False refund claim / false VAT refundRepayment + 50% / + 100%, plus MPR interest
Unpaid mineral royalty after 30 days10% + SOFR + 10% (foreign currency) or MPR (Naira)
False declaration; counterfeit documents; general penalty₦1m (or prosecution)
Inducing an officer₦500,000 individual; ₦2m body corporate; or up to 3 years
Officer's corruption or embezzlementFine of 200% of the sum, or up to 3 years

Directors and officers are liable for a company's offences unless they prove it happened without their knowledge or consent. TP and CbCR penalties are in Transfer pricing and BEPS.

Pitfall register

Every pitfall named in the examiner's reports from November 2020 to May 2026, with the fix. Tick each one once you can explain the correct answer without notes; your ticks stay in this browser only.

Diet · QWhat went wrongThe fixDone