The annual interest rate refers to the deposit interest rate for one year. The so-called interest rate is the abbreviation of "interest rate", which refers to the ratio of interest amount to deposit principal or loan principal in a certain period of time.

Usually divided into annual interest rate, monthly interest rate and daily interest rate. The annual interest rate is expressed as a percentage of the principal, the monthly interest rate as a percentage, and the daily interest rate as a percentage.

When the economic development is in the growth stage, the investment opportunities of banks increase, the demand in loanable funds increases and the interest rate rises; On the other hand, when the economy is in a downturn and the society is in a depression, banks' willingness to invest will decrease, so will the demand for loanable funds, and the market interest rate will generally be lower.