Charity address lookup lets supporters and staff select a real, correctly formatted UK address from just a postcode, validated against Royal Mail PAF. For UK charities it keeps donor records accurate for Gift Aid and mailings — matching against the ~31 million UK addresses PAF holds across ~1.8 million postcodes.
Why does accurate donor address data matter?
Because wrong addresses mean returned appeals, wasted postage and rejected Gift Aid claims. Validating against PAF at sign-up keeps every supporter deliverable — the same clean-data foundation behind our address lookup for charities.
- HMRC-ready donor addresses for Gift Aid
- Fewer returned appeals and wasted print
- Reliable duplicate detection across supporters
- Clean data flowing into your fundraising CRM
How does address lookup support Gift Aid?
By ensuring every declaration carries a genuine, standardised home address. Validating at the point of declaration keeps records HMRC-compliant and audit-ready, and pairs neatly with CRM address validation for your supporter database.
Validated vs manual capture
| With AutoPostcode | Manual entry | |
|---|---|---|
| Address source | Royal Mail PAF | As typed |
| Gift Aid | Compliant | Queried / rejected |
| Mailings | Delivered | Returned |
| Record matching | Reliable | Duplicates |
| Integration | REST into CRM | N/A |
UK-first and affordable
AutoPostcode is a UK-first, PAF-backed, developer-friendly and affordable alternative to Loqate, Fetchify and Ideal Postcodes — accurate donor data that respects charity budgets.
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Create an account and start validating donor addresses today — no card required.
Frequently asked questions
What is charity address lookup?
Charity address lookup lets supporters and staff find and select a real, correctly formatted UK address from just a postcode, validated against Royal Mail PAF. It keeps donor records accurate so Gift Aid claims and mailings work reliably.
Why does accurate donor address data matter for charities?
Because inaccurate addresses cause returned appeals, wasted print and postage, and rejected Gift Aid claims. Capturing a verified PAF address at sign-up keeps every supporter record deliverable and audit-ready.
How does address lookup help with Gift Aid?
Gift Aid declarations require an accurate donor name and home address. Validating the address against PAF at the point of declaration ensures HMRC-compliant records and reduces the risk of claims being queried or rejected.
What address data do charities validate against?
UK charities should validate against Royal Mail's Postcode Address File (PAF) — roughly 31 million delivery-point addresses across around 1.8 million postcodes — the authoritative source for accurate UK donor addresses.
Can address lookup integrate with our CRM and donation forms?
Yes. AutoPostcode is a REST API returning JSON, so it drops into donation forms, event sign-ups and fundraising CRMs. Verified addresses flow straight into the supporter record.
Will address lookup reduce wasted mailing costs?
Yes. By ensuring appeals and thank-you letters only go to real, deliverable addresses, you cut returned mail, wasted print and postage — stretching restricted fundraising budgets further.
Ready to get started?
Add Royal Mail PAF-verified UK address lookup to your site in minutes — start free, no card required.