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Loans & mortgages

Extra payment calculator

What paying a bit more each month does to a loan — in interest saved and in years removed from the term.

$
%
years
$

Paid on top of the required payment, straight against principal.

Interest saved

$105,429

And the loan finishes 6 yr 7 mo early.

Without extra
30 years
With extra
23 yr 5 mo
Interest without
$408,142
Interest with
$302,714

This assumes every extra dollar is applied to principal in the month you pay it. Some lenders hold extra payments or apply them to the next instalment instead — worth confirming before you rely on it.

Questions

Why does a small extra payment save so much?
Every extra dollar goes straight against the principal, and the principal is what interest is charged on. Reducing it early removes the interest that would have accrued on that amount for every remaining month of the loan.