FreeByte

Mortgage overpayment calculator

Years shaved off by paying extra.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$
5.8%
$

Paid off in

19 yr 2 mo

Interest saved

$66,562

With these inputs, paid off in comes to 19 yr 2 mo over 25 years. Interest saved works out to $66,562. The result assumes rate stays at 5.8%.

Normal payment
$1,769.97
New payment
$2,019.97
Months saved
70

Over time · by years left

What moves the number · Paid off in

Input−10%Now+10%
Balance18 yr 9 mo19 yr 2 mo19 yr 7 mo
Rate19 yr 4 mo19 yr 2 mo19 yr 1 mo
Years left17 yr 9 mo19 yr 2 mo20 yr 6 mo
Extra per month19 yr 8 mo19 yr 2 mo18 yr 9 mo

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Whatmakesequal

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Years shaved off by paying extra.

A worked example

Starting figures

Balance
$280,000
Rate
5.8%
Years left
25
Extra per month
$250

What it returns

Paid off in
19 yr 2 mo
Interest saved
$66,562
Normal payment
$1,769.97
New payment
$2,019.97
Months saved
70

How to read the results

With the defaults above, paid off in works out at 19 yr 2 mo.

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