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Mortgage Monthly Calculation Formula

Time: 2017-01-19         Source: Financial 360 finishing         Author: 360 Financial consolidation

1,Equal principal repaymentLaw (the maximum amount of repayments in the first month, then decreasing month by month). Equivalent principal mortgage loan monthly calculation formula:

The amount of monthly payments for the first month = total loan amount / number of loan months + total loan amount * monthly interest rate. Monthly Monthly Amount = (Loan Principal / Repayment Month) + (Loan Principal - Accumulated Return of Principal) × Monthly Interest Rate. The principal should be returned every month = loan principal / repayment month. Monthly interest should be reimbursed = remaining principal x monthly interest rate = (loan principal - the cumulative amount of principal returned) x monthly interest rate. Monthly monthly depreciation = principal per month x monthly interest rate = loan principal ÷ repayment month x monthly interest rate. Total interest = [(total loan amount ÷ repayment months + total loan amount × monthly interest rate) + total loan amount ÷ number of repayment months × (1 + monthly interest rate) 〕 ÷ 2 × repayment months - total loan amount.

2,Equal repayment of principal and interestLaw (equal monthly payments):Equal installments of principal and interestMonthly repayment mortgage loan calculation formula:

Monthly Monthly Amount = [Loan Principal × Monthly Interest Rate × (1 + Monthly Interest Rate) ^ Repayment Month] ÷ ((1 + Monthly Interest Rate) ^ Repayment Month - 1]. Monthly Interest Repayments = Loan principal x monthly interest rate x ((1 + monthly interest rate) ^ number of repayment months - (1 + monthly interest rate) ^ (repayment month number - 1) ] 〔(1 + monthly interest rate) ^ Number of repayment months -1]. Monthly repayment of principal = loan principal × monthly interest rate × (1 + monthly interest rate) ^ (repayment month number - 1) ÷ 〔 (1 + monthly interest rate) ^ repayment month - 1〕. Total interest = repayment months × monthly monthly payments - loan principal.

For example, commercial mortgage loans: The loan principal is 300,000 yuan and the repayment period is 10 years (ie, 120 months). Based on the annual interest rate of 6.55%, the monthly interest rate is approximately 0.0546%. Substituting the equivalent principal repayment calculation formula, the monthly repayment amount can be calculated as 3414.08 yuan.

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