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9708 · 5.2

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

  1. Expansionary: ↑G or ↓T when Y < Yf (recessionary gap).
  2. Contractionary: ↓G or ↑T when Y > Yf (inflationary gap).
  3. Multiplier k = 1/(1−MPC) for spending changes.
  4. Automatic stabilisers: progressive tax, unemployment benefits.