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how to find monthly mortgage payment formula. Fixed Monthly Mortgage Repayment Calculation P r 1 rn 1 rn 1 where P Outstanding loan amount r Effective monthly interest rate n Total number of periods months. See a breakdown of your monthly and total costs including taxes insurance and PMI.
In order to calculate the monthly payment we can rely on a relatively simple equation. Create your Categories column. Next add 1 to the monthly rate.
Use the following formula to find the principal and interest.
Here is the formula broken down into six steps. This will open a new Excel spreadsheet. Following this formula your monthly interest will be 000416. Your mortgage-payment calculation requires a critical step that converts your annual interest rate to a monthly interest rate.