Fiscal & Monetary Policy

A real-world government usually combines all three families to pursue the five macroeconomic aims.

Example — the economy is in a deep recession with inflation at 1% (below target) and unemployment rising to 8%.

A sensible policy mix:

• Fiscal: expansionary. Cut income tax, raise spending on infrastructure projects. Direct support for incomes and jobs.
• Monetary: expansionary. Cut interest rates to encourage borrowing and investment. Possibly use QE if rates are already near zero.
• Supply-side: start medium-term investments in education, retraining, and R&D to raise long-run capacity once the recession ends.

Example — the economy is growing fast at 4% but inflation is at 7% (well above the 2% target).

The mix flips:

• Fiscal: contractionary. Raise taxes (especially income tax), cut some discretionary spending. AD falls.
• Monetary: contractionary. Raise interest rates to slow borrowing and investment. AD falls further.
• Supply-side: continue education and infrastructure investment, but the priority now is to cool the demand side.

Effective macro policy is rarely a single tool; it is a coordinated mix chosen for the current state of the economy.