2.2.4 Government Expenditure
Edexcel A-Level Economics (9EC0) | Theme 2.2.4
Definition and Role
Government expenditure, or G, is spending by the public sector on goods, services, and transfer payments.
It is a key component of aggregate demand: AD = C + I + G + (X - M).
Governments use expenditure to pursue both macroeconomic and microeconomic objectives.
Key Influences on Government Spending
The Economic Cycle (Automatic Stabilisers)
Government spending changes automatically over the business cycle and helps stabilise the economy.
In a recession or weak economy: Spending increases because unemployment benefits and other welfare payments rise. Tax revenues fall. This automatic fiscal expansion supports aggregate demand.
In a boom or strong economy: Spending decreases as welfare claims fall, while tax revenues rise. This automatic fiscal contraction helps cool the economy.
Fiscal Policy Discretion (Deliberate Policy)
Governments can make discretionary changes to spending to meet policy aims.
Expansionary Fiscal Policy: Increasing G, for example on infrastructure or education, to boost aggregate demand, growth, and employment.
Contractionary Fiscal Policy: Decreasing G to reduce aggregate demand, control inflation, or reduce a budget deficit.
Political and Social Priorities
Government spending also reflects wider priorities that can change over time.
Long-term Supply-Side Policies: Spending on infrastructure, education, and healthcare can increase productive potential and shift LRAS to the right.
Political Promises: Spending may reflect manifesto commitments, such as higher defence spending or new hospitals.
Demographic Changes: An ageing population can increase government spending on pensions and healthcare.
Impact of Changes in Government Spending
On AD: An increase in government spending directly raises aggregate demand and may increase real GDP, employment, and inflation depending on the amount of spare capacity.
On LRAS: Spending on infrastructure, education, and technology can increase productive capacity and shift long-run aggregate supply to the right.
On the Budget Deficit: Higher spending, unless matched by higher taxes, worsens the government's budget balance and may increase national debt.
Exam Preparation
- Automatic vs. Discretionary: Know the difference between automatic stabilisers, which operate without new laws, and discretionary fiscal policy, which involves deliberate government decisions.
- Link to Objectives: Connect higher government spending to growth and employment, and lower government spending to controlling inflation or reducing the budget deficit.
- Evaluation: The effectiveness of a change in G depends on the multiplier effect, the state of the economy, and confidence effects.
- Trade-Offs: There is often a trade-off between using government spending to manage AD in the short run and maintaining sustainable public finances in the long run.