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Extra Mortgage Payment Calculator

Adding a bit to your mortgage each month can save tens of thousands in interest and shave years off your loan. Enter your balance, rate, term, and extra amount to see the savings — then open the full mortgage calculator to compare accelerated bi-weekly, lump sums, and more.

Loan

$
%
yrs
$
Interest saved
$91,173
vs. no extra payment
Paid off sooner (months)
81

The numbers

New payoff time (years)23.25
Base monthly payment (P&I)$1,799
Free · part of the Mortgage Calculator toolkit

How it's calculated

Our methodology & 2026 data sources →

Frequently asked questions

Do extra payments really help that much?
Yes — because extra money goes straight to principal, it removes all the future interest on that principal. Even $100–$200/month can save years and tens of thousands.
Is it better to pay extra monthly or one lump sum?
Both help; consistent monthly extras and accelerated bi-weekly schedules compound nicely. The full mortgage calculator lets you compare all of them.

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