Unit 4: Managing the Economy
Core concepts to master
Unit 4 focuses on policy management. Know monetary policy: the Reserve Bank sets the cash rate to influence the cost and availability of credit, affecting consumption, investment, output and inflation. Understand the transmission mechanism and the 2–3% target. Know fiscal policy: government spending and taxation, automatic stabilisers, discretionary measures, and the budget outcome. Study supply-side policies (deregulation, education, infrastructure, tax reform) that raise productive capacity. Understand macroeconomic policy objectives and conflicts - growth versus inflation, unemployment versus inflation (the short-run Phillips curve), and internal versus external balance. Also know international trade policy (free trade, protection, tariffs) and the role of free trade agreements.
Traps examiners set
- Mixing up policy tools. The cash rate is monetary; spending and tax are fiscal.
- Ignoring time lags. Monetary policy affects demand after several quarters.
- Assuming trade-offs vanish. Low unemployment and low inflation can conflict in the short run.
- Confusing automatic stabilisers with discretionary policy. Stabilisers work without new decisions.
- Overstating supply-side speed. Supply-side policies raise capacity slowly.
Worked rule of thumb
For a policy question, use problem → instrument → transmission → outcome → evaluation. Example: inflation is 4.5%, above target. The RBA raises the cash rate. Higher rates raise mortgage and business loan costs, reducing disposable income and investment, lowering aggregate demand and easing demand-pull inflation. Evaluate: lags, impact on unemployment, and exchange-rate effects. This structure earns analysis marks.