# Will the 2022 quantitative economic profit problem of mortgage advance still suffer losses

2022-05-03 By When we buy a house, we often encounter some difficult questions, such as whether to use equal amount of principal and interest loans or equal amount of principal loans?If I have spare money in hand to repay part of the mortgage in advance?We also often hear home buyers tell us that it is best to pay back the mortgage within five years, after five years there is no need to pay back, because you have already paid back most of the interest, is that true?Hope that through this article can help you understand the mystery of mortgage, rational planning of the use of funds, at the same time master the calculation of interest.One, equal amount of principal loan and equal amount of principal and interest loan interest calculation formula: interest = principal × annual interest rate × number of years below we pass a specific case to analyze two kinds of loan means: equal amount of principal loan equal amount of principal, as the name implies is every month place return principal is a fixed value.If the loan principal of 120,000 yuan is repaid in 12 installments (one month), the annual interest rate is 6%.Table 1 Repayment of equal principal As can be seen from Table 1, according to the method of repayment of equal principal, we need to repay interest of 3900 yuan in total.So why is the monthly interest rate gradually decreasing?Because our principal surplus is decreasing, the interest on the principal is decreasing.If we plan to pay off the remaining principal in the second phase, we only need to pay 1150 yuan in interest.Accordingly, reimbursement of means of reimbursement of principal of equal specified amount ahead of schedule is not deficient!Equal amount principal and interest loan equal amount principal and interest, just as the name implies that is every month place return principal and interest and is fixed value.If the loan principal of 120,000 yuan is repaid in 12 installments (one month), the annual interest rate is 6%.Table 2 Equal principal and interest repayment method