Interest Only Mortgage Calculator

This interest-only mortgage calculator will help you find out what payment you will pay based on the interest-only payback portion for your loan principal. This result will likely be lower than a standard mortgage payment as it calculates your obligation for the interest-only portion of the mortgage, rather than the principal and interest. To use the calculator simply enter the loan principal amount and loan interest rate and the interest-only mortgage calculator will calculate the payment amounts for you.

Enter your information into the calculator below, and push Calculate.

Loan principal amount


Interest rate (in percent; i.e. 4.5)


Interest payment amount per month


Interest payment amount per fortnight


Interest payment amount per week


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