First, convert the annual interest rate into the monthly interest rate. There are 12 months in a year, so the monthly interest rate is 6.125%/12 = 0.5104%.
Next, we can use the equal principal and interest repayment method to calculate the monthly repayment amount. In the equal principal and interest repayment method, the monthly repayment amount includes principal and interest, and the monthly repayment amount is equal.
Assuming that the loan term is 20 years (240 months), we can use the following formula to calculate the monthly repayment amount:
Monthly repayment amount = loan principal × monthly interest rate ×( 1+ monthly interest rate) × loan term /(( 1+ monthly interest rate) × loan term-1)
Among them, the loan principal is 400,000 yuan, the monthly interest rate is 0.5 104% (that is, 0.005 104), and the loan period is 240 months.
Substitute these values into the formula and calculate:
Monthly repayment amount = 400,000× 0.005104× (1+0.005104) 240/((1+0.005104) 240-/kloc.
Calculated by calculator or spreadsheet software, the monthly repayment amount is about 3088 1. 12 yuan.
Therefore, when the loan amount is 400,000 yuan, the interest rate is 6. 125% and the term is 20 years, the monthly repayment amount is about 3088 1. 12 yuan.