Reviewed
Last reviewed on 2026-03-28 by Global Economy Insights.
Explained
What Is an Interest Rate?
A plain-language guide to the price of money and why it moves.
Key takeaway: A plain-language guide to the price of money and why it moves.
Simple Definition
An interest rate is the cost of borrowing money or the reward for saving it, expressed as a percentage.
Policy rates set by central banks influence other rates across the economy, including mortgages and business loans.
Why It Matters
- Rates affect how much it costs to borrow for homes, cars, and investment.
- They influence asset prices and risk appetite.
- Rates are a key lever for controlling inflation.
Common Misconceptions
- Higher rates are always bad for the economy.
- Central banks directly set all interest rates.
- Rates only matter for borrowers, not savers.
How To Use This Concept
The point of this guide is not only to define the term. It is to help readers recognize where the concept appears in live data, policy decisions, and market reactions.
A useful next step is to open one related live-data page and compare the definition here with how the same concept shows up in an actual current reading.
FAQ
Why do central banks raise rates?
To slow demand and cool inflation pressures.
Do rates affect exchange rates?
Yes. Higher rates can attract capital and strengthen a currency.
What is the difference between policy and market rates?
Policy rates are set by central banks; market rates are set by supply and demand in markets.