Extra Payment Calculator

See how a little more principal each month can save years and interest.

Your inputs

Estimate details

All calculations run locally in your browser. No data is stored.

Time saved9 yr 2 mo
New payoff time20 yr 10 mo
New monthly payment$2,196

Extra payments are applied directly to principal after the scheduled payment each month.

How this calculator works

We amortize your remaining balance twice: once with the scheduled fixed-rate payment and again with your extra amount applied directly to principal every month.

Change any input to update the estimate instantly. Your entries never leave your device.

Frequently asked questions

Does the extra payment reduce next month’s payment?

Usually no. It reduces principal and shortens payoff time while the scheduled payment remains the same.

Are prepayment penalties included?

No. Check your loan agreement or ask your servicer before making additional payments.

How should I send extra principal?

Follow your servicer’s instructions and verify that the extra amount is applied to principal.