Cambridge O Level Economics: Fiscal policy measures and their effects (2281)

This guide is written for Cambridge O Level Economics 2281, using the syllabus for examination in 2026. It covers syllabus statements 4.3.7 (definition of fiscal policy), 4.3.8 (fiscal policy measures, including calculations of the size of a budget deficit or surplus) and 4.3.9 (effects of fiscal policy on the government’s macroeconomic aims). There are no separate tiers for this course.

For 4.3.9 the syllabus says you do not need aggregate demand or aggregate supply, so the effects below are explained as plain chains of cause and effect: a change in tax or spending, then what households and firms do, then the result for an aim. Everything else about the budget (reasons for spending, types of tax, principles of taxation) is a separate topic. Go to the course hub for the full list, tick off progress on the printable checklist, and use the revision notes and practice questions for this unit. For the wider context of government intervention, see the mixed economic system and government intervention. To check your level first, take the free diagnostics.

All figures in this guide are invented. Country A, Country B and the other places are illustrative, and none of the numbers are real statistics.

What you must be able to do

Statement	Your task
4.3.7	Define fiscal policy
4.3.8	Describe the tax and spending changes behind a surplus or deficit; work out its size
4.3.9	Explain how fiscal measures may help the government reach its macroeconomic aims

The government’s aims (statement 4.2.1) are growth of output, low unemployment, low inflation, a steady balance of payments and a fairer spread of income.

4.3.7 Definition of fiscal policy

Fiscal policy means the government changing how much it spends and how much it taxes, to steer the economy towards its macroeconomic aims.

A good definition has two parts: it is about government spending and taxation (not interest rates or the money supply, which are monetary policy), and it has a purpose, which is to move the economy towards an aim.

4.3.8 Fiscal policy measures

The budget balance

The government budget compares what the government raises with what it spends in a year.

Position	Meaning
Budget surplus	Government revenue is greater than government spending
Budget deficit	Government spending is greater than government revenue
Balanced budget	Revenue equals spending

Budget balance = total government revenue − total government spending. A positive answer is a surplus and a negative answer is a deficit. When you state the answer, always say which one it is. A deficit is usually met by borrowing, and that borrowing is added to the national debt. A surplus can pay off some of that debt or be kept in reserve.

The measures

Measure	Direction	Immediate effect on the budget
Cut tax rates (income, sales, company tax)	Expansionary	Revenue falls, so the balance moves towards deficit
Raise tax rates	Contractionary	Revenue rises, so the balance moves towards surplus
Raise government spending (health, schools, roads, welfare, subsidies)	Expansionary	Spending rises, so the balance moves towards deficit
Cut government spending	Contractionary	Spending falls, so the balance moves towards surplus

Expansionary policy aims to increase spending in the economy. Contractionary policy aims to reduce it. Governments can combine measures, for example raising spending and cutting taxes together.

Not every change in the balance is a policy decision. In a recession, tax revenue tends to fall (people earn and spend less) and welfare spending tends to rise (more people claim benefits), so the deficit grows without any new measure. Fiscal policy is the deliberate change.

Worked example 1: finding the balance

Country A, Year 1 (illustrative, million units of an invented currency):

Revenue	m units	Spending	m units
Income tax	420	Education	260
Sales tax	310	Health	240
Company tax	150	Welfare	250
Other	120	Infrastructure	180
		Defence	120
		Other	60

1. Total revenue = 420 + 310 + 150 + 120 = 1,000.
2. Total spending = 260 + 240 + 250 + 180 + 120 + 60 = 1,110.
3. Balance = 1,000 − 1,110 = −110.

Country A has a budget deficit of 110 million units. If GDP is 5,000 million units, the deficit is 110 ÷ 5,000 × 100 = 2.2% of GDP, a figure that lets you compare countries of different sizes.

Worked example 2: a contractionary package

In Year 2, Country A raises the sales tax rate from 10% to 12% on taxable spending of 3,100 million units, and cuts infrastructure spending from 180 million units to 140 million units.

1. Old sales tax = 10% × 3,100 = 310. New sales tax = 12% × 3,100 = 372. Extra revenue = 62 million units.
2. New revenue = 1,000 + 62 = 1,062. New spending = 1,110 − 40 = 1,070.
3. New balance = 1,062 − 1,070 = −8 million units, so the deficit falls from 110 to 8, a reduction of 102 (92.7% of the old deficit).

Check the assumption. Step 1 assumes shoppers buy just as much after the rise. If higher prices cut taxable spending by 3% to 3,007 million units, sales tax is 12% × 3,007 = 360.84, revenue is 1,050.84 and the deficit is 1,070 − 1,050.84 = 19.16 million units. The deficit still falls, but by less than planned.

Worked example 3: an expansionary package and a surplus turned to deficit

Country B has revenue of 800 million units and spending of 740 million units, a surplus of 60 million units. It raises spending by 90 million units and cuts income tax so that revenue falls by 25 million units.

1. New spending = 740 + 90 = 830. New revenue = 800 − 25 = 775.
2. New balance = 775 − 830 = −55 million units, a deficit.
3. The swing is 60 + 55 = 115 million units, which equals the sum of the two changes (90 + 25).

Worked example 4: a tax cut does not always lose the full amount

Country A cuts the income tax rate from 25% to 22%. Taxable income is 1,680 million units.

1. Old revenue = 25% × 1,680 = 420 million units. New revenue at 22% = 369.6 million units. Arithmetic loss = 50.4 million units.
2. Suppose the tax cut leaves people with more to spend and incomes rise by 5%, to 1,764. New revenue = 22% × 1,764 = 388.08 million units, so the loss is only 31.92 million units.

The budget deficit therefore widens by less than the first sum suggests. Say “if” because the income rise is not guaranteed.

4.3.9 Effects on the government’s macroeconomic aims

For each aim, set out a chain. Then add a limit, because judgement strengthens an answer.

Economic growth (a rise in the economy’s output)

Expansionary chain: government spends more on roads, schools and training, or cuts company tax, then firms and households have more to spend or more reason to invest, then firms sell more and produce more, so output rises. Spending on infrastructure and education also adds to the economy’s capacity to produce in future.

Example: real output rises from 5,000 million units to 5,150 million units: (150 ÷ 5,000) × 100 = 3.0% growth.

Limits: the effect is small if people save the tax cut; borrowing to pay for it means future interest and repayments; and projects take years to complete.

Full employment (low unemployment)

Chain: government builds a hospital, so construction firms hire workers directly. Those workers spend wages in local shops, which then need more staff. A cut in income tax also raises take-home pay, so households spend more and firms hire.

Example: Country C has 160,000 unemployed in a labour force of 2,000,000, an unemployment rate of 8%. A programme gives jobs to 20,000 of the unemployed: (160,000 − 20,000) ÷ 2,000,000 × 100 = 7.0%.

Limits: fiscal policy works poorly on structural unemployment, where workers lack the skills for the jobs on offer. There, spending on training is the better measure.

Stable prices (low inflation)

Chain (contractionary): the government raises income tax and cuts spending, then households have less to spend, so firms sell less and find it harder to raise prices, and inflation slows. If the price index rises from 100 to 106 in one year (6% inflation) and then to 109.18 the next, inflation is 3.0% (109.18 ÷ 106 = 1.03), a slower rise, not a fall in prices.

Limits: higher indirect taxes raise prices directly, which can push the measured inflation rate up first. Cutting spending can also raise unemployment, so aims may conflict. A subsidy on a basic food lowers its price, a direct way to hold prices down at a cost to the budget.

Balance of payments stability

Chain (contractionary): lower incomes mean people buy fewer imports, so spending on imports falls and the current account improves. Tax incentives or subsidies to exporting firms cut their costs and help them sell abroad.

Opposite case: expansion can worsen the position. If households spend 30 units of every extra 100 units on imports and incomes rise by 100 million units, imports rise by 30 million units. A deficit of 60 million units on the current account becomes 90 million units if nothing else changes.

Redistribution of income

Chain: progressive taxes take a larger share from high earners, and spending on welfare, health and education helps low-income households.

Example: a progressive system charges 10% on income up to 20,000 units and 30% above that. A person on 12,000 units pays 1,200 units (10%). A person on 60,000 units pays 2,000 + 12,000 = 14,000 units (23.3%). Before tax the richer person earns 5 times as much. After tax they have 46,000 units against 10,800, about 4.3 times. Add a benefit of 2,000 units to the poorer person and the gap falls to 46,000 ÷ 12,800 = about 3.6 times.

Conflicts and evaluation

Fiscal measures that help one aim can hurt another. Expansion that cuts unemployment may raise prices and imports. Contraction that helps stable prices may increase unemployment. Good evaluation also considers: how large the measure is; the time lag before it works; whether the economy has spare resources; how households and firms respond; and the cost to the budget and the national debt.

Common errors

• Writing “deficit” when revenue is larger than spending, or leaving out the minus sign. State the word.
• Saying tax cuts always reduce revenue by the full arithmetic amount.
• Calling a fall in the inflation rate a fall in prices.
• Mixing in interest rates, which belong to monetary policy.
• Using aggregate demand or aggregate supply, which the syllabus says are not required here.
• Describing a measure without the chain that links it to the aim.

Official syllabus

Cambridge O Level Economics 2281, syllabus for examination in 2026 (version 2), published by Cambridge University Press and Assessment (Cambridge International Education), section 4.3 Fiscal policy, statements 4.3.7 to 4.3.9.