We all know interest rates are important. Central banks control interest rates, and lowering them can stimulate the economy. It feels like adjusting interest rates is the biggest move central banks make. But have you ever thought about why interest rates are so important? Are they determined by central banks or by the market? Why can lowering interest rates stimulate the economy? Why raise interest rates during inflation? What is the relationship between interest rates and the stock market? How does it affect exchange rates?