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What is tax? Concepts, objectives and the impact of tax on the economy

ICAN Skills, Taxation. Syllabus area A, introduction to taxation, tax administration and ethics

11 min read · Updated 8 November 2026

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In this part

A question gives you a one-line prompt: explain tax yield, tax rate, tax effect, tax impact and tax shift. Another asks how a tax differs from a fee, a fine and an electricity bill. A third asks why a government taxes cigarettes more heavily than bread. None of them needs a computation.

All of them are marks that candidates lose because they know the idea but cannot put it into a clean sentence. They also come back almost every diet.

This topic covers what tax is, how it differs from other public charges, the six objectives of taxation, direct and indirect taxes, and the importance, challenges and impact of tax legislation and of the tax system on the economy. The next topic covers the types of taxes and the basic concepts of base, yield, rate and incidence in more detail.

In 30 seconds

Tax is a compulsory payment to government, backed by law, that is not a price for a service. A fee pays for a specific recurrent service. A fine or penalty punishes a breach of law and is not meant to raise revenue. Six objectives: revenue, merit goods, public goods, discouraging demerit goods, redistribution of income and wealth, and harmonising economic objectives.

Direct tax is paid by the person it is levied on (PAYE, company tax). Indirect tax is collected from one person but borne by another (VAT, excise). Exam law: for periods ending before 1 January 2026 the marking guides use the old laws and the FIRS; from 2026 the Nigeria Tax Act 2025 applies and the Nigeria Revenue Service replaces the FIRS.

Key terms in plain English

TermWhat it means
TaxA compulsory transfer of money to government, set by law, that is not payment for a service
FeePayment to cover the cost of a recurrent government service that gives the payer a measurable benefit, such as a court fee
Fine and penaltyA charge to punish a breach of law, not to raise revenue
Merit goodsGoods such as health and education that government wants everyone to have
Public goodsGoods such as roads, street lights and national defence that everyone shares
Demerit goodsHarmful goods such as alcohol and cigarettes that tax is used to discourage
Direct taxA tax paid by the person on whom it is levied
Indirect taxA tax collected from one person but borne by another

Syllabus check

This topic is in syllabus area A, introduction to taxation, tax administration and ethics (20% of marks). It covers:

  • the concepts and objectives of taxation;
  • how tax differs from fees, fines and penalties;
  • direct and indirect taxes;
  • the importance, challenges and impact of tax legislation and of the tax system on the economy.

CAMA 2020 and the meaning of tax

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. 377(1) and s. 378Directors prepare financial statements that give a true and fair viewCompany tax starts from the accounting profit, so the tax figure is only as reliable as these statements
s. 305 and s. 308Directors must act in good faith and with the care, diligence and skill of a prudent directorDirectors answer for tax compliance and penalties that arise from careless filing

The rules in more depth

Tax, fee, fine and penalty

ChargeWhat it isExample
TaxA compulsory extraction of money by a public authority, for public purposes, from its citizensCompany income tax, PAYE, VAT
FeeA payment to defray the cost of a recurrent service that the government provides mainly in the public interest but which gives the payer a measurable special advantageCourt fee, registration fee on a property, marriage fee
Fine and penaltyLevies imposed to punish infringement of the law, not to collect revenueA traffic offender’s fine; a penalty for late filing of a return

What makes a payment a tax

  • It is compulsory. It is not a voluntary payment or a donation. A penalty is also compulsory, but it is not a tax.
  • It is backed by law, for example the Companies Income Tax Act or the Value Added Tax Act before 2026, and the Nigeria Tax Act 2025 from 2026.
  • It is levied on predetermined criteria, openly and verifiably.
  • It is paid to government or one of its agencies, not to an individual.
  • It is not a price for a service or commodity supplied by government, unlike an electricity or water bill.

Objectives of taxation

ObjectiveWhat it means
Revenue generationThe main aim of a modern tax system is to fund rising public spending
Provision of merit goodsHealth and education must not be left wholly to private hands, or their cost will move beyond ordinary people
Provision of public goodsInternal security by the police, external defence by the armed forces, street lights and roads, whose cost cannot be charged to each user
Discouraging demerit goodsTaxing alcohol and cigarettes reduces use and the external costs of health risk and pollution
Redistribution of income and wealthTaxes reduce poverty and support stability and growth through fiscal policy, against inflation and unemployment
Harmonising economic objectivesTax systems can support a single market, as in ECOWAS or Africa, for free movement of goods, services, capital and people

Direct and indirect taxes

Direct taxIndirect tax
Who paysThe person on whom it is leviedA person other than the one from whom it is collected
NoticeThe taxpayer is told by an assessment notice and receipted, so the incidence is plainThe final payer often does not know the exact amount or basis
BurdenStays with the taxpayerShifted to the consumer through the price
ExamplesCompany income tax, PAYE, tax on gainsVAT, excise duty

Importance, challenges and impact of tax legislation

Importance. Tax law provides the framework for revenue; it can encourage investment and jobs; it can promote fairness by redistributing income; and it provides the framework for compliance and enforcement.

Challenges. The law can be complex and hard to understand; it must deal with evasion and avoidance; it must deal with inequality and fairness; and it must deal with globalisation and international tax.

Impact on the Nigerian economy.

  • Diversification: VAT and company income tax have raised non-oil revenue and reduced reliance on oil.
  • Foreign investment: incentives such as pioneer status attract investors, but inconsistent policy and multiple taxation can deter them.
  • Prices: higher taxes on essentials, such as a VAT increase, can push up inflation because businesses pass the burden on.
  • Small businesses: exemptions for small companies help, though state and local levies still weigh on them.
  • Public services: revenue funds infrastructure, health and education, but weak collection and corruption limit the gain.

Impact of the tax system on the economy

EffectPoints
PositiveRevenue for public goods; economic stabilisation; redistribution of income through progressive taxation
NegativeEconomic inefficiency from distorted incentives; evasion and avoidance that cut revenue; inflation where taxes raise the cost of production
OtherEffects on investment and enterprise through after-tax returns; on labour supply and demand; and on business competitiveness

Which law the exam uses

The Pathfinder marking guides for periods up to 2024 use the old laws, and the Federal Inland Revenue Service (FIRS) as the tax authority. The President signed four laws in June 2025: the Nigeria Tax Act, the Nigeria Tax Administration Act, the Nigeria Revenue Service (Establishment) Act and the Joint Revenue Board of Nigeria (Establishment) Act. The first two took effect on 1 January 2026.

The Nigeria Revenue Service replaces the FIRS. A period that ended before 1 January 2026 stays under the old law, even when the return is filed in 2026. In the answer, name the period first and then the law.

Worked examples

Example 1: tax or not? Classify each: (a) a court filing fee, (b) PAYE deducted from a salary, (c) a fine for a traffic offence, (d) an electricity bill, (e) VAT on a purchase.

  1. (a) Fee: it pays for a service and gives the payer a measurable benefit.
  2. (b) Direct tax: levied on the employee and compulsory by law.
  3. (c) Fine: it punishes a breach of law and does not raise revenue.
  4. (d) Neither: it is a price paid for a commodity, so it is a charge, not a tax.
  5. (e) Indirect tax: the seller collects it and the buyer bears it.

Example 2: tax yield. A tax has a base of ₦200 million and a rate of 7.5%. The rate is raised to 10% and the base falls to ₦160 million.

  1. Yield is rate multiplied by base.
  2. Before.
    7.5% × ₦200m = ₦15m.
    After: 10% × ₦160m = ₦16m.
  3. Yield rose by ₦1m although the base fell, because the rate rose faster than the base shrank.

Example 3: which objective? The government raises the levy on tobacco. (a) What objective does it serve? (b) What is the likely impact?

  1. (a) Discouraging demerit goods, and it also raises revenue.
  2. (b) The impact is a fall in tobacco sales, and so a fall in the external health costs.

How to score full marks

  • Define first, then give an example. Each concept is usually worth about 1½ marks.
  • Contrast tax with fee, fine and price in a table when asked how they differ.
  • List objectives with a phrase of explanation each, not just the names.
  • Balance impact answers: give positive and negative points when asked about impact on the economy.
  • Write in short, clear sentences. The examiners’ reports have flagged weak grammar and wordiness.

Common mistakes in the exam

  • Calling a penalty a tax because it is compulsory.
  • Treating an electricity or water bill as a tax, when it is a price.
  • Mixing up direct and indirect tax by the name of the payer instead of who bears the burden.
  • Listing objectives without explaining them.
  • Giving only positive effects of the tax system on the economy.

Quick revision

  • Tax: compulsory, legal, to government, not a price.
  • Fee: pays for a service. Fine: punishes. Penalty: punishes a breach.
  • Six objectives: revenue, merit goods, public goods, demerit goods, redistribution, harmonisation.
  • Direct: burden stays with the payer. Indirect: burden shifts.
  • Yield = rate × base.
  • Exam law: period before 2026, old law; from 2026, Nigeria Tax Act 2025.

Practice questions

Questions 1 to 10 are multiple choice. Questions 11 to 13 are written. Try each before opening the answer.

Question 1. Which of these is NOT a feature of a tax?

  1. It is compulsory
  2. It is backed by law
  3. It is a payment for a specific service received
  4. It is paid to government
Show the answer

C. A tax is not a price for a service. A payment for a service received, such as an electricity bill, is a charge.

Question 2. A payment to cover the cost of a recurrent government service that gives the payer a measurable advantage is a:

  1. Tax
  2. Fee
  3. Fine
  4. Levy for revenue
Show the answer

B. That is the definition of a fee, for example a court fee or a property registration fee.

Question 3. Fines and penalties are imposed mainly to:

  1. Raise revenue
  2. Punish a breach of law
  3. Redistribute income
  4. Pay for public goods
Show the answer

B. They punish infringement of the law and are not meant to collect revenue.

Question 4. Which of these is a direct tax?

  1. VAT
  2. Excise duty
  3. PAYE
  4. Customs duty
Show the answer

C. PAYE is levied on the employee, who bears it. VAT, excise and customs duties are indirect.

Question 5. The main feature of an indirect tax is that:

  1. The taxpayer receives an assessment notice
  2. The burden is shifted to another person
  3. It is paid only by companies
  4. It is never backed by law
Show the answer

B. The tax is collected from one person, such as the seller, but borne by another, such as the consumer.

Question 6. A higher tax on cigarettes mainly serves the objective of:

  1. Providing public goods
  2. Discouraging demerit goods
  3. Harmonising trade
  4. Providing merit goods
Show the answer

B. Cigarettes are demerit goods. Taxing them reduces use and the external health and pollution costs.

Question 7. Street lights and roads are examples of:

  1. Merit goods
  2. Demerit goods
  3. Public goods
  4. Luxury goods
Show the answer

C. Public goods are shared by everyone, and the cost of each person’s use cannot be charged.

Question 8. Tax yield is equal to:

  1. Tax rate divided by tax base
  2. Tax rate multiplied by tax base
  3. Tax base minus tax rate
  4. Tax paid minus tax due
Show the answer

B. Yield is the revenue collected: rate multiplied by base.

Question 9. Taxing health and education heavily would conflict with which objective?

  1. Revenue generation
  2. Provision of merit goods
  3. Discouraging demerit goods
  4. Harmonising economic objectives
Show the answer

B. Merit goods are goods government wants widely available, so taxing them heavily works against that aim.

Question 10. Which body replaces the Federal Inland Revenue Service under the 2025 laws?

  1. Joint Tax Board
  2. Nigeria Revenue Service
  3. Tax Appeal Tribunal
  4. Nigerian Customs Service
Show the answer

B. The Nigeria Revenue Service (Establishment) Act 2025 replaces the FIRS. The Joint Tax Board is replaced in turn by the Joint Revenue Board.

Question 11 (10 marks). (a) Define tax, fee, and fine and penalty. (6 marks) (b) State four features that distinguish a tax from other public charges. (4 marks)

Question 12 (15 marks). (a) State and explain any four objectives of taxation. (8 marks) (b) Explain direct and indirect taxes and state two differences between them. (7 marks)

Question 13 (15 marks). (a) Explain the importance and the challenges of tax legislation. (7 marks) (b) Discuss the impact of the tax system on the economy. (8 marks)

Model answers

Show the model answer to Question 11

(a) Definitions (6 marks). Tax: a compulsory extraction of money by a public authority, for public purposes, from its citizens. (2) Fee: a payment to defray the cost of a recurrent service that government provides mainly in the public interest, which gives the payer a measurable special advantage, such as a court fee. (2) Fine and penalty: levies imposed to punish a breach of law, not to collect revenue. (2)

(b) Features (4 marks). It is compulsory; (1) it is backed by law and levied on predetermined criteria; (1) it is paid to government and not to individuals; (1) it is not payment for a service or commodity supplied, unlike a utility bill. (1)

Show the model answer to Question 12

(a) Objectives (8 marks). Any four, 2 marks each:

  • revenue generation, to fund public spending
  • provision of merit goods such as health and education
  • provision of public goods such as security, roads and street lights
  • discouraging demerit goods such as alcohol and cigarettes
  • redistribution of income and wealth
  • harmonisation of economic objectives, such as a single market in ECOWAS

(b) Direct and indirect (7 marks). A direct tax is levied directly on the person expected to pay it, who is told by an assessment notice and receipted. Examples are company income tax, PAYE and tax on gains. (2) An indirect tax is borne by a person other than the one from whom it is collected; examples are VAT and excise duty.

(2) Differences: in a direct tax the taxpayer knows the amount and basis, while in an indirect tax the final payer often does not; (1½) in a direct tax the burden stays with the taxpayer, while in an indirect tax it is shifted through the price. (1½)

Show the model answer to Question 13

(a) Importance and challenges (7 marks). Importance:

  • it provides the framework for revenue
  • (1) it can encourage investment and jobs
  • (1) it can promote fairness by redistributing income
  • (1) it provides the framework for compliance and enforcement

(1) Challenges: complexity of the law; (1) evasion and avoidance; (1) inequality and fairness, and globalisation. (1)

(b) Impact (8 marks). Positive: revenue for public goods, economic stabilisation, redistribution through progressive taxation, and diversification of revenue away from oil. (4) Negative: distorted incentives and inefficiency, evasion and avoidance that cut revenue, and inflation where taxes raise production costs; multiple taxation can deter investors. (4)

Pathfinder on Tax, fee and fine, the six objectives, direct and indirect taxes, and the impact of tax on the economy

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.

Source: ICAN Pathfinder, Taxation. Diets covered: November Diet, 2025 and May Diet, 2016.

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

Where this fits

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

After it, move on to Advanced Taxation.

All Taxation topics

You are reading topic 1 of 44.

  1. What is tax? Concepts, objectives and the impact of tax on the economy01 here
  2. Types of taxes and tax systems: base, yield, rate, incidence, burden, impact, effect and shift02
  3. Sources of tax law in Nigeria03
  4. Tax authorities and their powers: the Nigeria Revenue Service, Joint Tax Board and state boards04
  5. Tax jurisdiction: taxes and levies of federal, state and local governments05
  6. Tax identification number (TIN) and tax registration06
  7. National Tax Policy, tax amnesty and VAIDS07
  8. Tax returns, assessments and payment08
  9. Objections and tax appeals09
  10. Tax clearance certificate10
  11. Tax offences, penalties and enforcement11
  12. Tax audit and investigation12
  13. Tax planning, avoidance and evasion13
  14. Ethics for tax practitioners14
  15. VAT in Nigeria: scope, registration and rate15
  16. VAT computation, returns and payment16
  17. VAT administration, offences and appeals17
  18. Withholding tax and withholding tax rates in Nigeria18
  19. Stamp duties, adjudication and appeals19
  20. Customs and excise duties20
  21. Personal income tax: residence and chargeable income21
  22. Taxation of employment income and PAYE22
  23. Consolidated relief allowance, rent relief and other reliefs for individuals23
  24. Self-employed individuals and sole proprietors24
  25. Taxation of partnerships25
  26. Trusts, estates and settlements26
  27. Taxation of investment income and securities lending27
  28. Capital allowances28
  29. Principles of company income tax: rates, small companies and exemptions29
  30. Adjusted profit30
  31. Basis periods, commencement and cessation31
  32. Change of accounting date32
  33. Loss relief33
  34. Total profit and company tax computation34
  35. Other bases of company assessment: dividend, minimum tax and turnover35
  36. Interest restriction and thin capitalisation36
  37. Taxation of real estate and agricultural businesses37
  38. Taxation of transport, telecommunication, banking and insurance businesses38
  39. Taxation of non-interest finance: Murabaha, Ijarah, Sukuk and Takaful39
  40. Free trade zones and tax incentives40
  41. Nigeria Startup Act: labelled startups and their incentives41
  42. E-commerce and digital economy taxation42
  43. Information technology in taxation: TaxPro-Max, registration and automated filing43
  44. Which law applies: periods before 2026 and the Nigeria Tax Act 202544
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