Central Banks Explained

Central banks are the institutions that manage a country's or region's money and monetary policy. They set short term interest rates, influence how much credit flows through the economy, act as lender of last resort in crises and often supervise banks. Their decisions move every major market. The largest and most influential include the US Federal Reserve, the European Central Bank, the Bank of Japan, the Bank of England and the People's Bank of China.

Mandates#

Most major central banks are independent from day to day political control, to keep policy focused on long term stability.

Policy tools#

How policy affects the economy#

policy rate ↑ → borrowing costs ↑ → spending and investment ↓ → demand ↓ → inflation ↓ (with a lag)

Monetary policy works with long and variable lags, often estimated at 12 to 24 months for the full effect on inflation, a phrase popularised by economist Milton Friedman.

Hawks and doves#

Markets watch speeches and votes by individual policymakers for shifts in tone.

Communication matters#

Modern central banks put great weight on communication. Decisions, statements, press conferences, meeting minutes and economic projections are all scrutinised. A single change in wording can move markets.

Central banks and markets#

Lender of last resort#

In financial crises, central banks lend to banks and sometimes markets to prevent panics. In 2008 and 2020, the Fed launched emergency facilities and swap lines with other central banks. In March 2023, it created a new lending programme after Silicon Valley Bank failed. See The 2008 Financial Crisis and Systemic Risk.

Frequently asked questions#

What does a central bank do?#

It manages a country's monetary policy, sets short term interest rates, provides liquidity in crises and often supervises banks, aiming for stable prices and a healthy economy.

What does hawkish mean?#

A policy stance that prioritises controlling inflation, usually favouring higher interest rates.

Why do markets react to central bank statements?#

Because changes in wording or projections alter expectations for future interest rates, which affect bond yields, currencies and stock valuations.

Next, learn about the most influential central bank in The Federal Reserve and the FOMC.