Why central banks change interest rates

📘 In Brief Central banks change interest rates to keep the economy stable. The key interest rate determines how expensive it is for banks to borrow money from the central bank – and this directly affects loans for businesses and consumers. When they lower the rate, loans become cheaper, which boosts investment and consumption and stimulates the economy. When they raise the rate, loans become more expensive, leading to less spending and dampened inflation. The main goal is price stability, meaning a moderate inflation rate of around two percent. If inflation rises too sharply, central banks respond with higher interest rates to curb demand. If a recession or too-low inflation threatens, they lower rates to promote growth. In this way, interest rate changes act as a steering tool that balances between too much and too little economic activity. 🔍 Why This Matters Central banks primarily change interest rates to ensure price stability, i.e., to keep inflation within the target range. If consumer prices rise too quickly, they raise key interest rates, making loans more expensive and dampening consumption and investment – demand falls, and price pressures ease. Conversely, they lower rates during economic downturns to make loans cheaper and thus stimulate consumption and investment. This is intended to prevent unemployment and support growth. Interest rate changes take effect with a time lag of six to eighteen months, which is why central banks must act proactively based on f …