Economics · Lesson 19

Public finance: revenue, taxation & budgets

JAMBWAECNECO

What the syllabus asks

JAMB: Public finance: meaning and objectives; fiscal policy and its instruments; sources of government revenue (taxes, royalties, rents, grants, loans); principles of taxation; tax incidence and effects; effects of public expenditure; government budget and public debts; revenue allocation and resource control in Nigeria

WAEC: Public finance: meaning and objectives; sources of government revenue; taxation – meaning, canons, objectives, types (direct and indirect), tax systems (progressive, proportional, regressive), incidence of taxation; government expenditure – recurrent and capital; the budget – types and uses; fiscal policy; public debt – types, reasons, burden and management; revenue allocation in Nigeria

NECO: Public finance: meaning and objectives; sources of government revenue; taxation – meaning, canons, objectives, types (direct and indirect), tax systems (progressive, proportional, regressive), incidence of taxation; government expenditure – recurrent and capital; the budget – types and uses; fiscal policy; public debt – types, reasons, burden and management; revenue allocation in Nigeria

What you will learn

Define public finance and state its objectives.
List and explain the sources of government revenue.
Explain the canons of taxation and the objectives of taxation.
Distinguish direct and indirect taxes, with merits and demerits of each.
Calculate tax payable under progressive, proportional and regressive systems and explain tax incidence.
Distinguish recurrent and capital expenditure and explain the types of budget.
Explain fiscal policy, public debt and revenue allocation in Nigeria.

Key points

Public finance: government revenue, expenditure and debt.
Revenue: taxes, rents and royalties, fees, fines, profits, grants, loans.
Tax: compulsory payment with no specific service in return.
Adam Smith’s canons: equity, certainty, convenience, economy.
Direct taxes (PIT, CIT) on income; indirect (VAT 7.5%, excise, customs) on spending.
Progressive, proportional, regressive: judged by the average rate as income rises.
Incidence: inelastic demand → consumers bear more; elastic demand → producers bear more.
Recurrent spending runs services; capital spending builds assets.
Budgets: balanced, surplus (anti-inflation), deficit (anti-recession).
Fiscal policy uses spending and taxes; monetary policy uses money and interest rates.
Public debt: internal/external, productive/dead-weight; burden is debt servicing.
Revenue allocation: vertical and horizontal; principles include derivation and population.

Start here: Meaning and objectives of public finance

Every year the Federal Government of Nigeria, the 36 states and the 774 local government councils must pay teachers, build roads, run hospitals and maintain the army and police. Where does the money come from, and how is it spent? That is the subject of public finance.

Public finance is the branch of economics that studies how government raises revenue, how it spends that revenue, and how it manages public debt.

Why government needs money: objectives of public finance

Provision of public goods and services: defence, police, courts, street lights and roads, which private firms would not supply adequately.
Redistribution of income: taxing the rich more heavily and spending on services used by the poor.
Economic stability: controlling inflation and unemployment through spending and taxes.
Economic growth and development: investing in infrastructure, education and health.
Correcting market failure: taxing harmful goods (tobacco) and subsidising useful ones.
Servicing public debt and meeting international obligations.

Public finance differs from private finance. A household adjusts its spending to its income; government often decides what it must spend first, then finds the revenue. Government can also borrow from its own central bank, tax its citizens and plan for many years ahead.

Worked example 19.1

State which objective of public finance each action serves: (a) building a federal highway; (b) a higher tax on cigarettes; (c) free school meals for primary pupils; (d) cutting spending when prices are rising fast.

(a) Provision of public goods / development.
(b) Correcting market failure (discouraging a harmful good) and raising revenue.
(c) Redistribution of income.
(d) Economic stability (fighting inflation).

Public goods; market failure; redistribution; stability

⚠️ Common mistake: defining public finance as "government spending" only. It covers revenue, expenditure and debt management.

Try it yourself. Give one way public finance differs from household finance.

Show solution

Government usually fixes expenditure first and then raises revenue to match it; a household spends according to its income. (Also: government can tax and print money.)

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Practice questions

1. A compulsory payment to government with no specific service in return is a

tax
fee
fine
loan

Show answer

A: tax
Taxes fund general spending.

2. The canons of taxation were stated by

Keynes
Malthus
Marshall
Adam Smith

Show answer

D: Adam Smith
Equity, certainty, convenience, economy.

3. A tax whose rate rises as income rises is

proportional
indirect
progressive
regressive

Show answer

C: progressive
The rich pay a higher proportion.

4. A tax that takes the same percentage of all incomes is

ad valorem
proportional
progressive
regressive

Show answer

B: proportional
Constant average rate.

5. Which is a direct tax?

Personal income tax
VAT
Excise duty
Import duty

Show answer

A: Personal income tax
Paid directly on income.

Key words

Public finance: The study of how government raises revenue, spends it and manages public debt.
Tax: A compulsory payment to government without a direct, specific service in return.
Canons of taxation: Principles of a good tax: equity, certainty, convenience, economy (Adam Smith), plus flexibility and productivity.
Direct tax: A tax on income or wealth paid directly to the tax authority by the person on whom it is levied.
Indirect tax: A tax on goods and services, collected through sellers and passed on in prices.
Value added tax (VAT): An indirect tax charged on the value added at each stage of production and distribution.
Excise duty: A tax on goods produced within the country, e.g. alcoholic drinks and tobacco.
Customs (import) duty: A tax on goods brought into the country.
Progressive tax: A tax whose rate rises as income rises.
Proportional tax: A tax charged at the same rate on all levels of income.
Regressive tax: A tax that takes a smaller percentage of income as income rises.
Tax incidence: Where the final burden of a tax rests.

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