Free Mortgage Extra Payment Calculator
Estimate how an additional monthly mortgage payment changes payoff time and interest.
Mortgage Extra Payment Calculator
Enter a value to begin.
How to use this mortgage extra payment calculator
- Enter the remaining fixed-rate mortgage details and proposed extra amount.
- Check the inputs and preview, then use the primary action.
- Download, copy or use the result shown by the tool.
How the result is calculated
The ordinary fixed payment is calculated first, then a monthly simulation applies that payment plus the extra amount until the balance reaches zero. Fees, penalties and rate changes are excluded.
All calculation and transformation work happens in this browser tab. No entered value is sent to an Noler Tools application server.
Important limitations
Results are provided for convenience and should be checked independently before an important decision. A format or checksum result never authenticates an identity, document, account, licence, vehicle or registration.
Frequently asked questions
Is this mortgage extra payment calculator free?
Yes. It is free to use and does not require an account.
Does Noler Tools save my input?
No. The input and result remain in temporary browser memory and are not uploaded or saved by this site.