Principal × Term × Interest Rate = Interest
Cumulative interest-bearing products × daily interest rate = interest
Interest principal × term = interest product
Daily interest rate = monthly interest rate ÷30
Or = annual interest rate ÷360
Monthly interest rate = annual interest rate12
The interest period is "beginning but not ending", that is, the deposit is calculated from the date of deposit to the day before payment; The loan is calculated from the date of borrowing to the day before repayment, and the interest is calculated according to the actual deposit or loan days.
For deposits and loans with interest on a case-by-case basis, the interest-bearing period shall be calculated on a monthly full moon basis; If there are whole months and odd days, they can be converted into whole days; Regardless of the size of the full moon, it is calculated as 30 days; Insufficient days calculated by actual days.
For demand deposits and loans, interest is calculated according to the actual number of days of deposits or loans. If the bank's interest rate is adjusted, the deposit and loan interest will be calculated by stages, and the bank will calculate it separately according to each term and interest rate, and then add it up.