Interest rate, as we all know, refers to the ratio of interest to borrowed funds, that is, the principal, in a certain period of time. The interest rate is expressed as annual interest rate, monthly interest rate and daily interest rate according to the standard of measurement period. The annual interest rate is expressed as a percentage, the monthly interest rate is expressed as one thousandth and the daily interest rate is expressed as one thousandth. For example, the annual interest rate of 9% is written as 9%, that is, the fixed annual interest rate of deposits per 100 yuan is 9 yuan; The monthly interest rate of 6% is written as 6‰, that is, the interest per thousand yuan deposit in January is 6 yuan; The daily interest is written as 1.5, that is, the daily interest per 10,000 yuan deposit is 1 50 yuan. The conversion formula is: annual interest rate ÷ 12= monthly interest rate; Monthly interest rate ÷30= daily interest rate; Annual interest rate ÷360= daily interest rate.
Second, interest
According to the different nature of banking business, it can be divided into bank interest receivable and bank interest payable.
Interest receivable refers to the remuneration that the bank obtains from the borrower by lending to the borrower; It is the price that the borrower must pay for using the funds; It is also part of the bank's profits.
Interest payable refers to the remuneration paid to depositors by banks to absorb their deposits; It is the price that banks must pay to absorb deposits, and it is also part of the cost of banks.
Due to different deposit types, the specific interest calculation methods are different, but the basic interest calculation formula remains unchanged. The formula is: interest = principal * interest rate * time.
1. Calculation method of overdue days: overdue days = (withdrawal year-maturity year) ×360+ withdrawal month, days-maturity month and days.
2. Calculation method of interest:
A. 100 yuan basic interest method. It is suitable for lump-sum deposit and withdrawal, and interest calculation of current certificates of deposit.
B. product interest method. It is suitable for calculating deposit interest by stages, and can also be used for calculating current passbook interest.
C. calculation method of interest. Applicable to the calculation of savings interest of current passbook.