Precis

Gift Aid Calculator

See what your charity actually receives, and what higher and additional-rate taxpayers can claim back.

  • Instant results
  • Private: runs in your browser
  • Free, no sign-up
Gift Aid only works if you've paid at least as much Income Tax or Capital Gains Tax that tax year as the charity reclaims — if you're a non-taxpayer and tick the Gift Aid box anyway, you become liable to pay HMRC the difference yourself.
The charity receives
£0
your donation, grossed up
Your donation£0
Extra from Gift Aid (25p per £1)£0
Total the charity receives£0
You can personally reclaim£0

How Gift Aid works

Gift Aid lets a UK charity reclaim the basic-rate Income Tax (20%) that HMRC assumes you already paid on the money before you donated it — so a £100 donation with a Gift Aid declaration is treated as if you'd donated £125 gross and paid £25 of tax on it, which the charity claims back from HMRC. That works out as an extra 25p for every £1 you give, at no extra cost to you, as long as you've paid at least that much Income Tax or Capital Gains Tax in the same tax year. If you pay tax at the higher (40%) or additional (45%) rate, you can personally claim back the difference between your rate and the 20% the charity already reclaimed, calculated on the grossed-up donation — done through your Self Assessment tax return or by asking HMRC to adjust your tax code. Non-taxpayers shouldn't tick the Gift Aid box, because if the charity claims tax you didn't actually pay, HMRC will ask you to make up the shortfall.

Frequently asked questions

How much extra does Gift Aid add to a £100 donation?

£25 — the charity receives £125 in total from a £100 Gift Aid donation, since HMRC tops it up by 25p for every £1 given (the basic-rate 20% tax grossed back up).

Can I claim anything back myself as a higher-rate taxpayer?

Yes. On a £100 donation, a 40% taxpayer can personally reclaim £25 via Self Assessment (the difference between 40% and 20%, on the £125 grossed-up amount) — on top of the £25 the charity already claimed, so £150 of total value is unlocked from £100 out of your pocket. A 45% taxpayer can reclaim £31.25 the same way.

What happens if I tick Gift Aid but don't pay enough tax?

You become responsible for paying HMRC the difference between the tax you actually paid that year and what the charity (or charities) claimed on your donations — so only make a Gift Aid declaration if your total Income Tax and Capital Gains Tax for the year covers it.

Does Gift Aid cost the charity anything?

No — the extra amount comes from HMRC, not from the charity's own funds, and it's on top of your original donation. The charity does need your Gift Aid declaration (name, address, and confirmation you're a UK taxpayer) to claim it.

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