Monetary Policy
What Is Monetary Policy?
Monetary policy is operated by the Bank of England’s Monetary Policy Committee (MPC), which is independent of the government. The government (HM Treasury and the Chancellor) sets the inflation target — 2% CPI — but the decision on interest rates is made solely by the MPC, not by politicians. In the United Kingdom, it is therefore the Bank of England that carries out monetary policy, not the government. The Bank does not aim simply to make profit — its primary job is to keep inflation low and stable so that households and firms can plan with confidence.
The key instrument of monetary policy is the bank rate, sometimes called the base rate or official bank rate. Commercial banks — such as high street lenders — borrow money from the Bank of England at this rate. Because their own costs depend on it, they pass the change on to their customers: when the bank rate rises, mortgage rates and loan rates go up across the whole economy. When it falls, they fall too.
The Bank of England's inflation target is 2% per year, measured by the Consumer Prices Index (CPI). The Monetary Policy Committee (MPC) meets eight times a year and votes to raise, lower or hold the bank rate to keep inflation close to this target.
The Monetary Policy Committee
The Monetary Policy Committee (MPC) is made up of nine members — including the Governor of the Bank of England — who vote on where to set the bank rate. The MPC is independent of the government, which means politicians cannot order it to cut rates before an election. This independence is designed to prevent short-term political pressures from causing long-term inflation damage.
When the MPC meets, it looks at data on inflation, economic growth, unemployment, and consumer confidence. If inflation is rising above 2%, the MPC will typically vote to raise the bank rate to cool spending. If the economy is in recession and inflation is falling below target, it is likely to cut the rate to encourage borrowing and spending.
How Changing Interest Rates Affects the Economy
A rise in the bank rate sets off a clear chain of effects. Think of it like turning down a tap on spending:
- Mortgages and loans cost more. A homeowner on a variable-rate mortgage immediately pays more each month. This reduces their disposable income and they cut back on other spending — perhaps eating out less or delaying a new car.
- Saving becomes more attractive. A higher bank rate means savings accounts pay more interest. Households may choose to save rather than spend, reducing demand across the economy.
- Business investment falls. Firms that borrow to expand — to buy a new delivery fleet or open a second factory — face higher repayments. Some projects that looked profitable at 3% interest are no longer worthwhile at 6%. Investment spending falls, which slows economic growth.
- Consumer credit becomes more expensive. Credit card rates and personal loan rates rise. Consumers buy fewer goods on credit, reducing demand.
The full transmission from a rate change to lower inflation typically takes one to two years. This time lag means the MPC must make forward-looking decisions based on forecasts, not just current data.
Bank rate rises → borrowing costs more → households and firms spend and invest less → demand in the economy falls → upward pressure on prices eases → inflation falls towards the 2% target.
Contractionary monetary policy means raising the bank rate. The aim is to reduce spending, cool inflation and prevent the economy from overheating. Higher rates make borrowing more expensive and saving more rewarding, which squeezes consumer demand. Firms invest less. The housing market may slow. The risk is that if rates go too high, unemployment rises and the economy tips into recession.
Expansionary monetary policy means cutting the bank rate. This is used when the economy is growing too slowly or is in recession. Lower rates make mortgages and loans cheaper, encouraging households to borrow and spend. Firms find investment more attractive because the cost of finance falls. Demand picks up, output rises and unemployment should fall. The risk is that if rates stay too low for too long, inflation can rise above target.
A useful way to remember the direction: HIRE to FIRE inflation — Higher Interest Rates Eliminate inflation. LIRE to HIRE growth — Lower Interest Rates Encourage growth.
Quantitative Easing
Quantitative easing (QE) is used when the bank rate has been cut as low as it can practically go — close to zero — but the economy still needs a boost. The Bank of England creates new money electronically and uses it to buy assets, mainly government bonds, from banks and other financial institutions. This injects money directly into the financial system.
With more money available and bond prices higher, interest rates on longer-term borrowing also fall. Banks are better capitalised and more willing to lend to businesses and households. The intention is to increase the flow of credit in the economy, supporting spending and investment. QE was first deployed by the Bank of England in March 2009, following the financial crisis that had intensified in 2007–08, and was used again on a large scale during the pandemic in 2020.
Monetary policy is controlled by the Bank of England’s MPC. Its main tools are the bank rate and quantitative easing. It works through the cost of borrowing and the supply of money. Changes act with a time lag of around one to two years.
Fiscal policy is controlled by the government (HM Treasury and the Chancellor of the Exchequer). Its main tools are taxation and government spending. Changes can act more quickly because government spending directly injects money into the economy, while tax cuts immediately raise household disposable income.
The key distinction: the Bank of England sets interest rates; the government sets taxes and spending. Both aim to achieve the same objectives — stable prices, low unemployment and steady economic growth — but use different levers. In practice, they must work in the same direction: expansionary fiscal policy alongside expansionary monetary policy will produce a stronger stimulus, but also a greater inflation risk.
The Limits of Monetary Policy
Monetary policy is a powerful tool, but it has limitations. First, it works with a time lag — a rate cut today will not lift consumer spending overnight. Second, if households and firms are already carrying high levels of debt, cutting rates further may not encourage more borrowing; people may simply feel too financially stretched. Third, a global economic shock — such as a sudden rise in oil prices — can push up inflation even when domestic interest rates are low. The Bank cannot control world commodity prices. Finally, QE risks increasing asset price inflation (property and shares become more expensive), which can widen inequality between those who own assets and those who do not.