## How do I calculate monthly mortgage payments?

Calculate monthly mortgage payments by hand. It’s also possible to estimate a mortgage payment by hand. Use the following formula to find the principal and interest: M = P [r (1+r)^n/ ( (1+r)^n)-1)] M = the monthly mortgage payment, which is the number you want to find. P = the principal loan amount, or $135,000.

## How to determine a monthly mortgage payment?

Comparing the monthly payment for several different home loansFiguring how much you pay in interest monthly, and over the life of the loanTallying how much you actually pay off over the life of the loan versus the principal borrowed to see how much you actually paid extra

## How to calculate a mortgage payment manually?

How to calculate Mortgage Payments manually? In these easy steps, you can learn to determine your mortgage payment by hand. Get a piece of paper and a pen, and follow through! But first, note down the mortgage principal and interest formula, which is: M = P [ I ( 1 + I )^N ] / [ ( 1 + I )^N – 1 ]

## What is the formula for calculating a mortgage payment?

M is your monthly payment.P is your principal.r is your monthly interest rate, calculated by dividing your annual interest rate by 12.n is your number of payments (the number of months you will be paying the loan)