Net cost of giving after relief.
A worked example
Starting figures
- Donation
- $1,500
- Marginal rate
- 32%
What it returns
- Net cost to you
- $1,020
- Tax relief
- $480
How to read the results
With the defaults above, net cost to you works out at $1,020.
Charitable donation calculator
Net cost of giving after relief.
Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$
32%
Net cost to you
$1,020
Tax relief
$480
With these inputs, net cost to you comes to $1,020. Tax relief works out to $480. The result assumes marginal rate stays at 32%.
What moves the number · Net cost to you
| Input | −10% | Now | +10% |
|---|---|---|---|
| Donation | $918 | $1,020 | $1,122 |
| Marginal rate | $1,068 | $1,020 | $972 |
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Compare scenarios
Save this set of inputs, change something, then save again to compare the outcomes side by side.