2281 · 4.3
Fiscal policy
Fiscal policy uses government spending and taxation to influence aggregate demand. The multiplier amplifies the initial change in G or T.
Need to know
What you need to know
- Fiscal policy involves adjusting government spending (G) and taxation (T) to influence aggregate demand.
- It is a demand-side policy, distinct from supply-side policies.
- Key instruments are direct/indirect taxes and capital/current/transfer spending.
- The outcome of fiscal policy affects the government's budget balance (deficit, surplus, or balanced).
Explanation
G and T as macro levers
- Expansionary: ↑G or ↓T when Y < Yf (recessionary gap).
- Contractionary: ↓G or ↑T when Y > Yf (inflationary gap).
- Multiplier k = 1/(1−MPC) for spending changes.
- Automatic stabilisers: progressive tax, unemployment benefits.