Fiscal Policy vs Monetary Policy: What’s the Difference?
Learn the difference between fiscal and monetary policy, the tools each uses, and how both can affect aggregate demand, output, employment and prices.
Fiscal policy uses government spending and taxation to influence the economy. Monetary policy uses interest rates, the money supply and credit regulations to do so. The key difference is the policy tools: fiscal decisions concern the government’s budget, while monetary decisions concern the availability and cost of money and credit.
How do they work?
An expansionary fiscal policy might increase government spending or reduce taxes. This can increase aggregate demand (AD), meaning total planned spending in the economy. An expansionary monetary policy might lower interest rates, making borrowing cheaper and encouraging households and firms to spend. Both can raise equilibrium national income, real output and employment, although the price level may also rise.
The reverse policies aim to reduce AD. A government could cut spending or raise taxes; a central bank could raise interest rates or restrict credit. These contractionary policies may ease upward pressure on the price level, but can also reduce real output and employment.
A quick example
Suppose consumer spending is weak. The government funds new infrastructure: that is fiscal policy because government spending has changed. Alternatively, the central bank lowers interest rates to encourage borrowing and spending: that is monetary policy. The intended effect on AD may be similar, but the tool is different.
Effects depend on economic conditions. Lower interest rates may do little if households are unwilling to borrow. Extra government spending may increase real output more when firms have spare capacity. In an exam, trace the chosen tool through AD to output, employment and the price level.
Common exam mistake: do not call a tax change monetary policy simply because it affects how much money households have. Taxes and government spending are fiscal tools; interest rates, the money supply and credit regulations are monetary tools. In Cambridge International AS Level Economics, this distinction sits within Government macroeconomic intervention.
