FreeByte

Contribution needed calculator

Monthly investment to hit a target.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$
$
7%

Monthly contribution

$495

Existing pot grows to

$242,324

With these inputs, monthly contribution comes to $495 over 20 years. Existing pot grows to works out to $242,324. The result assumes return stays at 7%.

Shortfall to fund
$257,676

Over time · by years

What moves the number · Monthly contribution

Input−10%Now+10%
Target$399$495$591
Already invested$541$495$448
Return$604$495$390
Years$672$495$354

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Monthly investment to hit a target.

A worked example

Starting figures

Target
$500,000
Already invested
$60,000
Return
7%
Years
20

What it returns

Monthly contribution
$495
Existing pot grows to
$242,324
Shortfall to fund
$257,676

How to read the results

With the defaults above, monthly contribution works out at $495.

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