›the percentage amount that you pay for borrowing money, or get for lending money, for a period of time, usually a year: a 7% interest ratean interest rate of 7%a high/low/zero interest raterising/falling interest ratesFalling interest rates acted as a tax cut for households.rumours of an interest rate riseInterest-rate fluctuations may affect present and future cash flows of the company.A rise in the interest rate causes the value of existing bonds to fall. The government may cut interest rates to boost growth.The bank has decided to leave interest rates unchanged.Some cards charge an interest rate of over 16%.The National Bank has set the interest rate at 6%.a variable/fixed interest ratelong-term/short-term interest rates