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Base erosion and profit shifting: techniques, the 15 OECD actions and country-by-country reporting

ICAN Professional, Advanced Taxation. Syllabus area C, international taxation

11 min read · Updated 8 November 2026

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In this part

A group owns a famous brand through a small company in a low-tax country. Every operating company in the group pays that company a royalty for using the brand. Each royalty is deducted from profit in the country where the product is sold, and each is taxed lightly where it is received.

A second group funds its Nigerian subsidiary almost entirely by loans from a sister company, so the subsidiary’s profit disappears into interest. Neither group breaks a rule in any single country. Together the structures empty the tax base of the countries where the sales are made.

This topic covers base erosion and profit shifting (BEPS), the players that use it, the main techniques, what makes it possible, the 15 actions of the Organisation for Economic Co-operation and Development (OECD), and Nigeria’s country-by-country reporting (CbCR) rules. The previous topic covered transfer pricing. The next covers regional integration and trade blocs.

In 30 seconds

Base erosion: tax planning that shrinks taxable profit in a country. Profit shifting: payments within a group that move profit from high-tax to low-tax countries, usually royalties and interest. Techniques: trademark and technology licensing, thin capitalisation, hybrid mismatch arrangements, and assets placed in an entity with no substance. OECD: 15 actions, with a multilateral instrument (action 15).

Nigeria: the CbCR Regulations 2018 require an ultimate parent resident in Nigeria with group revenue of ₦160 billion or more to file a report within 12 months of year end; late filing costs ₦10 million plus ₦1 million a month; failure to notify costs ₦5 million plus ₦10,000 a day.

Key terms in plain English

TermWhat it means
Base erosionPlanning that cuts the profit a country can tax
Profit shiftingMoving profit to low-tax places through payments within a group
Thin capitalisationFunding a company mainly by related party debt with little equity, to create interest deductions
Hybrid mismatchA difference between two countries’ rules that gives a deduction in one and no tax in the other
Controlled foreign company (CFC)A foreign company controlled by a resident parent; CFC rules tax its passive profit at home
Treaty shoppingUsing a company in a treaty country only to obtain treaty benefits
Ultimate parent entity (UPE)The entity at the top of a multinational group
Inclusive FrameworkThe group of more than 140 jurisdictions that work with the OECD on BEPS

Syllabus check

This topic is in syllabus area C (international taxation, 20% of marks). It covers:

  • the meaning of base erosion and profit shifting and the players and techniques involved;
  • the factors that contribute to it and the OECD actions against it;
  • country-by-country reporting in Nigeria.

CAMA 2020 and tax-driven structures

The Companies and Allied Matters Act 2020 (CAMA 2020) is the company law of Nigeria. The sections below apply to this topic.

SectionWhat it saysLink to this topic
s. 54A foreign company that wants to carry on business in Nigeria must incorporate a Nigerian companyA real Nigerian company with Nigerian directors and accounts has the substance that tax authorities look for
s. 119A person with significant control must notify the company within seven days, and the company notifies the Corporate Affairs Commission (CAC) within one monthBeneficial ownership records show who stands behind a group structure, which supports treaty and anti-avoidance checks
s. 426, s. 427 and s. 433Dividends are paid only out of distributable profits; directors who knowingly pay a dividend out of capital are liableA group cannot move profit out of a subsidiary by dividends that company law does not allow
s. 377(1) and s. 378Directors prepare financial statements that give a true and fair viewThe accounts disclose related party loans and charges, which the tax authority reviews

The rules in more depth

Base erosion and profit shifting

Base erosion is the use of financial measures and tax planning to reduce the taxable profit of a company in a country, by giving income a better tax treatment or writing off expenditure against it. Profit shifting is the payment of money to other group companies to move profit from high-tax to low-tax countries.

The payments are often royalties and interest, because they are deductible and some countries tax them lightly in the receiver’s hands. Together they are called BEPS: the tax base of the higher-tax country is eroded and the profit is shifted.

The players

Multinational groups are best placed to use BEPS because their operations form a ready network of companies through which funds can flow, they have the capital to set up and keep entities used for tax reduction. Their income is large enough to pay for advice, to put a structure in place and to update it as laws change.

The techniques

  1. Trademark and technology licensing. The group’s brands, designs and patents are held by a company in a low-tax country that charges royalties to the other members.
  2. Thin capitalisation. A subsidiary is set up with little share capital and funded by a group finance company. The large debt produces interest, which is treated differently by different countries and can lower the group’s tax if it is structured well.
  3. Hybrid mismatch arrangements. The same instrument is debt for the payer (so interest is deducted) and equity or exempt income for the receiver, which leaves the income untaxed anywhere.
  4. Assets in an entity without substance. A country offers a preferential regime to attract business, but the benefit is a trap if the profit sits in a company with no real activity; it only erodes the tax base of the country where the work is done.

Other forms are over-invoiced goods, management fees and head office charges, shifting risk to a low-tax company, avoiding a permanent establishment through commissionaire arrangements and treaty shopping.

What makes it possible

  • The digital economy. Services can be delivered from anywhere and produce sales everywhere with no physical presence, so it is hard to say where tax belongs.
  • Weak international cooperation. Tax is levied by each country on its own, so there is no agreed answer on what is taxed where, and no exchange of information to check it.

The OECD actions

Under the Inclusive Framework, over 140 jurisdictions work on BEPS. The OECD issued 15 actions.

No.ActionWhat it does
1Digital economyFinds the problems of taxing digital business, such as presence without nexus and the value of user data, and the collection of VAT on cross-border digital supplies
2Hybrid mismatch arrangementsModel treaty and domestic rules to stop double non-taxation, double deduction and long-term deferral
3Controlled foreign company rulesRecommends the design of CFC rules
4Interest deductionsLimits base erosion through related party and third party interest and equivalent payments
5Harmful tax practicesImproves transparency, including exchange of rulings, and requires substantial activity for any preferential regime
6Treaty abuseStops treaty benefits in inappropriate circumstances and makes clear that treaties are not for double non-taxation
7Permanent establishment statusChanges the PE definition to stop artificial avoidance, including commissionaire arrangements
8 to 10Transfer pricing and value creationIntangibles (8); risk and capital (9); other high-risk transactions such as management fees and head office charges (10)
11Measuring BEPSCollects and analyses data on the scale of BEPS and the effect of the actions
12Mandatory disclosureRequires taxpayers to disclose aggressive tax planning
13Transfer pricing documentationA common template for multinationals to report income, activity and tax by country (the CbC report)
14Dispute resolutionMakes the mutual agreement procedure more effective, including arbitration
15Multilateral instrumentOne treaty to change many bilateral treaties at once

The OECD minimum tax of 15% under Pillar Two is part of the same effort. Nigeria’s own minimum effective tax rate (s. 57 NTA 2025) is its response, and the earlier topics on transfer pricing, the digital economy and treaties each apply a BEPS action.

Country-by-country reporting in Nigeria

The Income Tax (Country-by-Country Reporting) Regulations 2018 were published on 8 January 2018 to give the authorities information on a group’s global activity, profit and tax, improve transparency and stop avoidance through BEPS.

  • An ultimate parent entity resident in Nigeria with consolidated group revenue of ₦160 billion or more files a CbC report in the prescribed format each year, within 12 months after the last day of the group’s accounting year. The OECD threshold is €750 million.
  • A constituent entity that is not the parent may have to file if conditions are met. It need not file if the report has been filed through a surrogate parent entity.
  • Every Nigerian resident constituent entity notifies the NRS whether it is the parent or a surrogate, or names the reporting entity and its residence, by the last day of the group’s accounting year.
  • The report covers revenue, profit or loss, tax paid and accrued, capital, retained earnings, staff and tangible assets for each country. The NRS guidelines follow the OECD guidance and use the International Financial Reporting Standards consolidation rule to decide which entities belong to the group.
DefaultPenalty
Late filing of the CbC report₦10 million, and ₦1 million for each month the default continues
Incorrect or false report₦10 million
Failure to notify₦5 million, and ₦10,000 for each day the default continues

With CbC data, the NRS can compare a group’s profit with its activity in Nigeria, so more audits and more transfer pricing disputes follow. A group in Nigeria should review its transfer pricing practice before the reports are filed.

Worked examples

Example 1: royalty shifting. A Nigerian company pays a royalty of ₦200m to its group’s intellectual property company in a low-tax country. An independent licensor would charge ₦120m.

  1. Excess royalty.
    200 − 120 = ₦80m, which is not allowed as a deduction because it is not at arm’s length.
  2. Extra tax at 30% = ₦24m.
  3. Withholding tax on the royalty at 10% of ₦200m = ₦20m is deducted at source.

Example 2: related party interest. A Nigerian subsidiary with ₦10m of equity owes its parent ₦990m at 15%. An independent lender would charge 10%.

  1. Interest paid.
    15% × 990 = ₦148.5m.
    Arm’s length interest = 10% × 990 = ₦99m.
  2. Excess interest = ₦49.5m, which is added back in computing profit.
  3. Extra tax at 30% = ₦14.85m.

Example 3: a hybrid. A payment is debt in country A, where the payer deducts the interest, and equity in country B, where the receiver treats it as an exempt dividend.

  1. The payment is deducted once and taxed nowhere, which is double non-taxation.
  2. Action 2 answers it with a rule that denies the deduction where the receiver does not include the income.

Example 4: CbCR penalties. A Nigerian parent with group revenue of ₦200bn files its CbC report three months late and fails to notify the NRS for 20 days.

  1. Revenue is above ₦160bn, so it must file.
  2. Late filing.
    ₦10m + (3 × ₦1m) = ₦13m.
  3. Failure to notify.
    ₦5m + (20 × ₦10,000) = ₦5.2m.

How to score full marks

  • Separate base erosion from profit shifting in the first lines.
  • Give each technique a one-line example with the tax effect.
  • Link each action to its number and aim.
  • Quote the ₦160 billion threshold, the 12 months and the penalty figures.
  • Tie the answer to Nigeria: ss. 191 and 192, the minimum tax and CbCR.

Common mistakes in the exam

  • Treating base erosion and profit shifting as the same thing with no distinction.
  • Listing action 1 twice and missing a different action.
  • Giving the CbCR threshold as €750 million only, for a Nigerian parent.
  • Forgetting the monthly and daily parts of the penalties.
  • Calling thin capitalisation a tax on companies with high gearing, when it is a planning technique.

Quick revision

  • Base erosion shrinks the base; profit shifting moves the profit.
  • Four techniques: licensing, thin capitalisation, hybrids, entities without substance.
  • 15 OECD actions; action 13 is CbCR; action 15 is the multilateral instrument.
  • CbCR: ₦160bn or €750m; file within 12 months; ₦10m + ₦1m a month; ₦5m + ₦10,000 a day.
  • CAMA 2020: ss. 54, 119, 377(1), 378, 426, 427, 433.

Practice questions

These are original questions written in the style of the Institute of Chartered Accountants of Nigeria (ICAN) exam. Try each one before you open the answer. Full model answers follow the written questions.

Recall check: multiple choice

Recent ICAN papers are written, although older papers such as May 2014 included multiple-choice questions. These questions are for quick recall. The written questions that follow are closer to the exam.

Question 1. Moving profit from a high-tax to a low-tax country by payments within a group is:

  1. Base erosion only
  2. Profit shifting
  3. Tax evasion by omission
  4. Thin capitalisation only
Show the answer

B. Profit shifting, often through royalties and interest.

Question 2. Funding a subsidiary mainly by related party debt with little equity is:

  1. Hybrid mismatch
  2. Thin capitalisation
  3. Treaty shopping
  4. A CFC
Show the answer

B. The interest creates deductions.

Question 3. A payment that is deductible for the payer and untaxed for the receiver is typical of:

  1. A hybrid mismatch arrangement
  2. A turnkey project
  3. A branch
  4. A dividend
Show the answer

A. This is double non-taxation.

Question 4. How many action items did the OECD issue under BEPS?

  1. 10
  2. 12
  3. 15
  4. 20
Show the answer

C. Fifteen.

Question 5. BEPS Action 13 deals with:

  1. Digital economy
  2. Transfer pricing documentation and CbCR
  3. Treaty abuse
  4. Dispute resolution
Show the answer

B. Action 13 is the common template.

Question 6. BEPS Action 15 is:

  1. A multilateral instrument
  2. Interest limits
  3. Mandatory disclosure
  4. CFC rules
Show the answer

A. One treaty that changes many bilateral treaties.

Question 7. A Nigerian ultimate parent must file a CbC report if group revenue is at least:

  1. ₦50 billion
  2. ₦100 billion
  3. ₦160 billion
  4. ₦500 billion
Show the answer

C. ₦160 billion (or €750 million).

Question 8. The CbC report is due within how long after the group’s accounting year?

  1. 3 months
  2. 6 months
  3. 12 months
  4. 24 months
Show the answer

C. 12 months.

Question 9. The penalty for failing to notify the NRS under the CbCR Regulations is ₦5m and:

  1. ₦1,000 a day
  2. ₦10,000 a day
  3. ₦100,000 a month
  4. ₦1m a month
Show the answer

B. ₦10,000 for each day the default continues.

Question 10. Which section of CAMA 2020 requires a person with significant control to notify the company within seven days?

  1. Section 54
  2. Section 119
  3. Section 377
  4. Section 426
Show the answer

B. Section 119.

Written questions

Question 11 (10 marks). (a) Distinguish base erosion from profit shifting. (4 marks) (b) State why multinational groups are best placed to use BEPS. (6 marks)

Question 12 (20 marks). (a) Explain four techniques used by multinationals in BEPS. (12 marks) (b) A Nigerian subsidiary with ₦10m of equity owes its parent ₦990m at 15%; an independent lender would charge 10%. Compute the excess interest and the extra tax at 30%. (8 marks)

Question 13 (10 marks). A Nigerian ultimate parent has group revenue of ₦200bn. It files its CbC report three months late and fails to notify the NRS for 20 days. (a) State whether it must file and the deadline. (3 marks) (b) Compute the penalties. (7 marks)

Model answers

Show the model answer to Question 11

(a) Distinction (4 marks). Base erosion is the use of financial measures and tax planning to reduce the taxable profit of a company in a country. (2) Profit shifting is making payments to other group companies to move profit from high-tax to low-tax places. (2)

(b) Why groups are placed to use it (6 marks). Their international operations give a ready network of companies for funds to flow through. (2) They have the capital to set up and keep entities for tax reduction. (2) Their income is large enough to pay for advice, to put a structure in place and to update it as laws change. (2)

Show the model answer to Question 12

(a) Techniques (12 marks). Any four, 3 marks each. Trademark and technology licensing: the group’s brands and patents are held by a low-tax entity that charges royalties to the other members. Thin capitalisation: a subsidiary with minimal share capital is funded by group debt, and the interest lowers group tax. Hybrid mismatch arrangements: an instrument is debt in one country and exempt income in the other, so there is double non-taxation.

Assets in an entity without substance: a preferential regime is used by a company with no real activity.

(b) Interest (8 marks).

  1. Interest paid.
    15% × 990 = ₦148.5m. (2)
  2. Arm’s length interest.
    10% × 990 = ₦99m. (2)
  3. Excess = ₦49.5m. (2)
  4. Extra tax.
    30% × 49.5 = ₦14.85m. (2)
Show the model answer to Question 13

(a) Filing (3 marks). Yes, because group revenue exceeds ₦160bn. (1) The report is due within 12 months after the last day of the group’s accounting year. (2)

(b) Penalties (7 marks).

  1. Late filing.
    ₦10m + (3 × ₦1m) = ₦13m. (4)
  2. Failure to notify.
    ₦5m + (20 × ₦10,000) = ₦5.2m. (3)

Pathfinder on BEPS techniques, the OECD actions, thin capitalisation and the CbCR Regulations

These are the ICAN Pathfinder questions that test this topic. ICAN owns the questions and the suggested solutions, so we point you to them and do not copy them. Open your Pathfinder, attempt each question under exam conditions, then check your answer against the notes above.

November Diet, 2025, Question 6

The question asked what thin capitalisation and treaty shopping mean and what follows from each, and for seven OECD actions against aggressive base erosion and profit shifting. Our thin capitalisation limit sits in the NTA Third Schedule; the OECD actions are covered in the section below.

Revise first: The OECD actions

May Diet, 2024, Question 1(a)

Part (a) of the compulsory question asked how excess deductible interest on a loan from a foreign parent is treated, using the limit of 30% of earnings before interest, tax, depreciation and amortisation. Our section on the techniques and the thin capitalisation rule in the NTA Third Schedule give the current position.

Revise first: The techniques

November Diet, 2021, Question 6

The question asked for the difference between base erosion and profit shifting, the techniques, six OECD actions and the effect on a group that engages in it. Our sections on the techniques and the OECD actions cover each part.

Revise first: The techniques

Source: ICAN Pathfinder, Advanced Taxation. Diets covered: November Diet, 2025; May Diet, 2024 and November Diet, 2021.

Spotted a mistake? Tell us and we will check it.

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See every past question on Advanced Taxation and the topic each one tests in the Pathfinder question finder.

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  1. National tax policy01
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  12. Taxation of leases12
  13. Non-resident taxation13
  14. Taxation of the digital economy14
  15. Tax treaties and double taxation relief15
  16. Transfer pricing16
  17. Base erosion and profit shifting17 here
  18. Regional integration and trade blocs18
  19. International tax policy and exchange of information19
  20. Current tax issues20
  21. Emerging trends: sustainable development and tax21
  22. Mergers and acquisitions: tax considerations22
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  28. Petroleum industry: structure, licences and transition28
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  32. Petroleum profits tax and production sharing contracts32
  33. Mining: regulation, titles and incentives33
  34. Mining: tax computation, royalties and penalties34
  35. Environmental, social and governance matters in the extractive industries35
  36. Nigeria Tax Act 2025: overview of the new tax laws36
  37. Withholding tax in Nigeria37
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