The loan is 1 0.5 million yuan, and the interest is written on the loan slip (calculated at the annual interest rate 10%), and the loan is for one whole year.
Then 1 year interest = principal × interest rate× deposit period =150000 *10% *1=15000 yuan.
Extended data
Interest classification:
The interest calculation formula is mainly divided into the following four situations:
First, the basic formula for calculating interest. The basic formula for calculating the interest of savings deposits is: interest = principal × deposit period × interest rate;
The second is the conversion of interest rate, in which the conversion relationship among annual interest rate, monthly interest rate and daily interest rate is: annual interest rate = monthly interest rate × 12 (month) = daily interest rate ×360 (day); Monthly interest rate = annual interest rate ÷ 12 (month) = daily interest rate ×30 (days); Daily interest rate = annual interest rate ÷360 (days) = monthly interest rate ÷30 (days). In addition, the use of interest rates should be consistent with the deposit term;
Three, the starting point interest calculation formula:
1, the starting point of savings deposit interest is RMB, and interest is not paid for cents below RMB;
2. The interest amount shall be calculated to one decimal place and rounded to one decimal place when actually paid;
3. Except for current savings, which are settled on an annual basis and interest can be converted into principal, all other savings deposits, regardless of the duration, are paid with the principal at the time of withdrawal, excluding compound interest;
Fourthly, the calculation of deposit period in the interest calculation formula,
1, and the storage period is calculated by counting the first number and the last number;
2, regardless of the big month, small month, flat month, leap month, every month is calculated as 30 days, and the whole year is calculated as 360 days.
3. The maturity date of all kinds of deposits shall be calculated on an annual and monthly basis. If the account opening date is the missing date of the expiration month, the expiration date should be the last day of the expiration month.
Baidu encyclopedia-interest calculation formula