3.6.5—Effectiveness of fiscal policy

Fiscal policy effectiveness depends on timing, multiplier, implementation capacity, financing, confidence, exchange rates and the state of the economy.

Long lags or supply constraints can weaken a well-designed policy; targeted spending may work better than broad demand stimulus.

Identify the binding constraint and evidence before judging.

A stimulus arrives after a downturn has ended, so it may intensify inflation rather than stabilise output.

A policy can be appropriate yet ineffective.

Constraints include political pressure over taxes and spending, recognition/decision/implementation time lags, sustainable-debt limits and—at HL—crowding out. Strengths include targeting particular sectors or groups and the potency of direct government spending in a deep recession when private demand is weak. Evaluate growth, unemployment and price stability separately: stimulus is likelier to raise real output with spare capacity and a large multiplier, but near capacity, with import leakages or delayed delivery, it may mainly raise prices or debt.