1, repayment method of equal principal and interest = [loan principal× monthly interest rate× (1+monthly interest rate) repayment months ]=[( 1+ monthly interest rate) repayment months-1], repayment method of equal principal and interest: equal principal and interest refers to monthly repayment.

2. Average principal repayment method: monthly repayment amount = (loan principal ÷ repayment months)+(loan principal-accumulated repaid principal amount) × monthly interest rate. Matching principal repayment means that the principal repaid every month is the same, and the monthly payment is divided into two parts, and the principal repaid every month is the same, plus the interest on the unpaid principal for one month.

The monthly payment of 480,000 loans for 30 years (i.e. 360 installments) is related to lending institutions, loan interest rates and repayment methods. Taking mortgage as an example, according to the benchmark interest rate of the central bank, the annual interest rate of commercial loans over five years is 4.90%; The annual interest rate of provident fund loans for more than five years is 3.25%.

I. Commercial loans

1. Matching principal and interest repayment method: 480,360 monthly payments 1967 yuan.

2. The average capital repayment method is (480,000/360)+(1000,000-accumulated repaid principal amount) ×(4.90%/ 12).

Second, provident fund loans.

Calculate with reference to the above calculation method:

1. Matching principal and interest repayment method: 480,360 monthly payments 1303 yuan.

2. Average capital repayment method: 480,360 monthly installments are 480,360, and the monthly installment is (480,000/360)+(480,000-accumulated principal repayment amount) ×(3.25%/ 12).