Use budgets, taxation and spending to explain fiscal policy
Calculate budget balances and trace how changes in tax and government spending may affect macroeconomic aims.
Section 4.2 · Fiscal policy
Cambridge IGCSE Economics 0455 / IGCSE (9–1) Economics 0987, 2027–2029 Version 1. Apply each model to the stated evidence and qualify conclusions where effects depend on context. Practice is original and self-checked; it is not a Cambridge paper, mark scheme or official grade.
Before you begin
- No prior economics study is assumed. Read the scenario for the decision-maker, the market or economy involved, the time period and the evidence supplied.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
Which is a fiscal policy measure?
What you will learn
- Calculate budget deficits and surpluses
- Compare tax types and government spending
- Explain fiscal measures and their effects
A budget records planned public revenue and spending
A government budget deficit occurs when expenditure exceeds revenue over a period; a surplus occurs when revenue exceeds expenditure. The difference is the deficit or surplus, not the total amount spent.
Governments spend on areas such as health, education, infrastructure, defence and benefits. Reasons and effects vary, and expenditure uses resources that could be allocated elsewhere.
Fiscal policy changes taxes and spending
Tax can raise revenue, influence consumption and imports, redistribute income or support environmental goals. Direct taxes apply to income or profits; indirect taxes apply to spending. Progressive, proportional and regressive describe how tax as a share of income changes as income rises.
Fiscal policy uses changes in taxation and government spending. Higher spending or lower taxes can raise demand; lower spending or higher taxes can restrain it. Effects depend on confidence, imports, spare capacity and the policy's design.
Pause and explain
Why might expansionary fiscal policy have a weaker effect on domestic output in a highly import-dependent economy?
Worked example
A government collects $450 billion in revenue and spends $500 billion. Calculate the budget balance and interpret it.
Show the worked solution
- Subtract revenue from expenditure.
- 500 − 450 = $50 billion.
- Spending exceeds revenue, so it is a deficit.
Answer The budget has a $50 billion deficit for the period. This is a flow difference, not the total government debt.
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Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
Revenue is $760 million and government spending is $825 million. Calculate the budget deficit.
Give me a hint
Subtract revenue from expenditure and state which is larger.
Compare my reasoning
- 825 − 760 = 65.
- Spending exceeds revenue.
- Report a deficit of $65 million.
The budget deficit is $65 million for the period.
Look for these in your work
- Subtraction correct
- Direction correct
- Units retained
A government cuts an indirect tax on bus fares. Explain a likely effect on users and one reason the full tax reduction might not appear in fares.
Give me a hint
Trace the tax change through costs and consider pass-through.
Compare my reasoning
- The operator's tax-related cost may fall.
- Lower fares may increase use or leave users with more income.
- The operator may retain some reduction or face other rising costs.
The tax cut may lower fares or support service, but full pass-through is not guaranteed: costs, competition and the tax design affect the result.
Look for these in your work
- Cost mechanism stated
- User effect linked
- Pass-through qualified
A government raises direct taxes to reduce inflation but also wants stronger growth. Explain one transmission path and one limitation.
Give me a hint
Consider disposable income and total demand.
Compare my reasoning
- Higher direct tax can reduce disposable income.
- Consumption demand may grow more slowly.
- The effect depends on saving, confidence and how revenue is used.
Higher direct taxes may restrain consumption and inflationary pressure, but can also weaken growth. The size depends on household responses, timing and whether the revenue supports productive spending.
Look for these in your work
- Tax path explained
- Aims linked
- Limitation included
Common mistakes
- Confusing a budget deficit with public debt
- Calling every indirect tax regressive without checking incidence
- Assuming a tax rise always reduces consumption by the same amount
What can you explain now?
How is a budget deficit calculated?
Compare with the explanation
Government spending minus government revenue
A deficit is the excess of spending over revenue.
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Make it stick
How is a budget deficit calculated?
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