Explain monetary policy, the role of the central bank and interest rates, and how changes in interest rates and the money supply influence borrowing, spending, inflation and growth.

What this dot point is asking

Monetary policy is the government's second main tool, run by the central bank, and CCEA expects you to explain it. You must explain what monetary policy is, the role of the central bank and interest rates, and how changing the official interest rate (and the money supply) affects borrowing, saving, spending, inflation and growth. You should also be able to compare it with fiscal policy. This completes Section 4 and is a frequent evaluation topic, usually alongside fiscal policy.

What monetary policy is

Monetary policy is the use of interest rates and the money supply to influence the level of activity in the economy. Its main job is to keep inflation low and stable, while supporting growth and employment. In the UK it is set by the central bank (the Bank of England), independently of the government, by deciding the official interest rate (the base rate).

Interest rates and how they work

An interest rate is the cost of borrowing money and the reward for saving, expressed as a percentage. When the central bank changes the official interest rate, commercial banks change the rates they charge on loans and mortgages and pay on savings to match. This is why a single decision by the central bank affects borrowing and saving across the whole economy.

The official rate is the central bank's lever: by moving it up or down, the central bank changes how expensive it is to borrow and how rewarding it is to save, and so changes how much households and firms spend.

How interest-rate changes affect the economy

The transmission from interest rates to the economy is the key thing to learn.

Raising interest rates (tightening) makes borrowing dearer and saving more rewarding. Households and firms borrow and spend less, mortgage holders have less left to spend, and people are encouraged to save rather than spend. Lower total demand means firms cannot raise prices as easily, so inflation falls, but growth may slow and unemployment may rise. This is used to control inflation.

Cutting interest rates (loosening) makes borrowing cheaper and saving less rewarding. Households and firms borrow and spend more, investment rises, and mortgage holders have more to spend, so total demand, growth and jobs rise. A lower rate may also weaken the exchange rate, helping exports. The risk is demand-pull inflation if the economy is near capacity. This is used to boost a weak economy.

Monetary policy compared with fiscal policy

Both fiscal and monetary policy aim to manage demand and hit the objectives, but they differ. Monetary policy uses interest rates and the money supply and is run by the central bank; it can be changed quickly but works with a time lag and affects borrowers and savers differently. Fiscal policy uses tax and government spending and is run by the government; it can target specific groups or regions but is slower to change and affects the budget balance. Governments often use the two together.

Why this matters

Monetary policy is the main weapon against inflation and a key support for growth, so it sits at the heart of managing the national economy. It links directly to inflation, unemployment and growth, to the financial sector (the central bank and interest rates), and to international trade through the exchange rate. Examiners reward candidates who can trace the full chain from an interest-rate change to spending, inflation and growth, and who can evaluate a policy by weighing its benefits, its risks and its time lags.