Matching principal and interest repayment method is to repay the loan principal and interest with matching principal and interest every month. The calculation formula is as follows:
Monthly repayment amount = (loan principal × monthly interest rate× (1+monthly interest rate) total repayment period) /( 1+ monthly interest rate) total repayment period-1.
For example, suppose you bought a 70-square-meter house at a price of 20,000 yuan per square meter, with a mortgage ratio of 80% and a mortgage period of 15 years. Then the total house price is 6.5438+0.4 million yuan, with a down payment of 280,000 yuan and an average monthly repayment of 888,024 yuan.
Average capital repayment method: it is a kind of diminishing repayment method. Using this method, the loan principal is divided into several repayment periods, and the interest payable in each period is calculated from the unpaid principal. The principal amount of each period is unchanged, and the interest is decreasing step by step. The calculation formula is as follows:
Monthly (quarterly) repayment amount = loan principal/repayment times+(loan principal-accumulated amount of repaid principal) × monthly (quarterly) interest rate.
In the average repayment method, the repayment amount of each installment is different. At first, due to the large principal, interest and monthly payment. With the continuous reduction of principal, interest and monthly payment also decrease.
The above-mentioned mortgage loan calculation method is the most basic calculation method, but the calculation is complicated. In order to simplify the calculation, the equal principal and interest repayment method in mortgage loan calculation can also be calculated with reference to the mortgage interest rate table.