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.

For help getting approved for a home loan we recommend Stewart & Lord – Registered Financial Advisers. To contact Stewart & Lord please click here.

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


If you've found a bug, or would like to contact us please click here

Copyright © 2019 All Rights Reserved. All calculators and tools on this website are made for educational and indicative use only. is part of the GST Calculator, PAYE Calculator and CGT Calculator group.