FreeByte

Windfall split calculator

Divide a lump sum across priorities.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$
40%
40%
10%

To debt

$10,000

To investing

$10,000

With these inputs, to debt comes to $10,000. To investing works out to $10,000.

Spending
$2,500
Left as cash
$2,500 (10%)

What moves the number · To debt

Input−10%Now+10%
Windfall$9,000$10,000$11,000
To debt$9,000$10,000$11,000

Solve for an input

Whatmakesequal

Compare scenarios

Save this set of inputs, change something, then save again to compare the outcomes side by side.

Divide a lump sum across priorities.

A worked example

Starting figures

Windfall
$25,000
To debt
40%
To investing
40%
To spending
10%

What it returns

To debt
$10,000
To investing
$10,000
Spending
$2,500
Left as cash
$2,500 (10%)

How to read the results

With the defaults above, to debt works out at $10,000.

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