UK Government: Income and Expenditure Revision Notes | GCSE AQA Economics

1. Why Government Finance Shapes the Whole Economy

Every year, the UK government collects hundreds of billions of pounds and then spends it. Those two decisions — how to raise money and where to spend it — touch every household, every business, and every public service in the country.

Think of it like a household budget, but at a national scale. A family earns income, pays bills, and decides what to prioritise. The government does the same, except the stakes affect 67 million people. Understanding this is central to Paper 2, because government spending is a direct component of Aggregate Demand.

2. Government Revenue: Where the Money Comes From

Government revenue is the income the government receives, mostly through taxation. There are two broad categories of tax worth knowing: direct taxes, which are levied on income and profits, and indirect taxes, which are levied on spending.

Income Tax is the single largest source of government revenue in the UK. Workers pay a percentage of their earnings above a tax-free allowance — in 2024, the basic rate is 20% on earnings between £12,571 and £50,270. National Insurance Contributions (NICs) are a second major direct tax, paid by both employees and employers; they fund contributory benefits such as the state pension and some welfare payments, while the NHS is funded from general taxation, which includes NICs alongside other revenue.

Value Added Tax (VAT) is the UK's main indirect tax, charged at 20% on the pre-tax price of most goods and services. This means VAT adds one-sixth to the final price you pay — so when you buy a new phone or a restaurant meal, the tax element is one-sixth of the total price. VAT is the second-largest source of revenue after Income Tax.

• Income Tax — paid on earnings above the personal allowance; the largest single revenue source
• National Insurance Contributions (NICs) — paid by employees and employers; funds welfare and the NHS
• Value Added Tax (VAT) — 20% on most goods and services; the main indirect tax
• Corporation Tax — paid by companies on their profits
• Excise duties — taxes on specific goods such as fuel, alcohol, and tobacco
• Council Tax — a local tax on residential properties, collected by local authorities

The chart above shows that Income Tax, NICs, and VAT together account for the vast majority of what the government collects. This matters for exam questions: if you are asked to identify the main sources, these three are your anchor points.

3. Government Expenditure: Where the Money Goes

Now that we know how the government raises money, the next question is: what does it spend it on? Government expenditure covers a wide range of areas, but a few categories dominate the budget.

Social protection — which includes the state pension, Universal Credit, housing benefit, and disability payments — is consistently the largest area of UK government spending. In 2023-24, it accounted for roughly a third of total expenditure. The ageing population means this figure is likely to grow over time.

Health spending, primarily on the NHS, is the second-largest category. Education — covering schools, colleges, and some university funding — is another major area. Together, social protection, health, and education typically account for well over half of total government spending.

• Social protection — state pension, Universal Credit, housing benefit, disability payments (largest single area)
• Health — NHS funding, including hospitals, GPs, and prescriptions
• Education — schools, further education, and some higher education funding
• Debt interest — payments on the national debt; rises when borrowing increases
• Transport — roads, rail infrastructure, and public transport subsidies
• Defence — armed forces, equipment, and national security

4. Balancing the Books: Revenue, Expenditure, and the Budget Position

With revenue and expenditure both in view, we can now look at what happens when they do not match — which is most of the time. When the government spends more than it collects, the gap is called a budget deficit. When it collects more than it spends, that is a budget surplus.

Worked example: Calculating the Budget Position

In a given year, the UK government collects £900 billion in revenue and spends £980 billion. Calculate the budget position and state whether it is a deficit or surplus.

1. Revenue = £900bn, Expenditure = £980bn — These are the two figures you need. Revenue is what comes in; expenditure is what goes out.
2. Budget position = Revenue - Expenditure = £900bn - £980bn = -£80bn — A negative result means spending exceeds revenue — this is a deficit.
3. Budget deficit of £80 billion — The government must borrow £80bn to cover the shortfall. This borrowing adds to the national debt.

Answer: Budget deficit of £80 billion. The government spent £80bn more than it received in revenue.

A persistent deficit means the government borrows year after year, which adds to the national debt — the total stock of outstanding government borrowing. Debt interest then becomes a spending commitment in its own right, as shown in the expenditure chart above.

5. Why Government Spending Matters for the Macroeconomy

Government spending (G) is one of the four components of Aggregate Demand: AD = C + I + G + (X - M). This means that when the government increases spending — say, by building new hospitals or raising welfare payments — AD shifts to the right, potentially increasing real GDP and employment.

The chain of analysis runs like this: higher government spending → increased AD → firms produce more → employment rises → household incomes rise → consumer spending increases further. This amplifying effect is linked to the concept of the multiplier, which you will encounter in more detail elsewhere in the course.

On the revenue side, higher taxes reduce disposable income for households and reduce profits for firms. This can dampen consumer spending and investment, shifting AD to the left. The government must therefore balance the need to raise revenue against the risk of slowing economic activity.

6. Exam Technique: Getting Full Marks on Revenue and Expenditure Questions

AQA questions on this topic tend to fall into a few predictable patterns. You might be asked to identify a source of revenue or an area of spending (1-2 marks), explain how a change in tax or spending affects the economy (4 marks), or evaluate a fiscal policy decision (6-9 marks). Each demands a different approach.

For identify or define questions, name the specific tax or spending category and give a brief description. For explain questions, build a chain: cause → effect → outcome. For evaluate questions, present both sides and reach a reasoned judgement that includes a condition — for example, whether the economy has spare capacity.

That chain — tax cut → higher disposable income → more consumer spending → higher AD → potential GDP growth — is exactly the kind of analysis that reaches Level 3 on a 6-mark question. Practise writing it out in full sentences using connective language.

Across this lesson, the core spec requirements connect tightly: government revenue (mainly Income Tax, NICs, and VAT) funds government expenditure (mainly social protection, health, and education), and the balance between the two determines the budget position, which in turn affects borrowing, national debt, and the macroeconomy through its impact on Aggregate Demand.