Find it. Unlock it. Claim it.
Gift Aid, unlocked end to end. Cascade shows who gave without a declaration, Foundry asks exactly those supporters, and each yes goes into your next claim with its proof. Start with either: each runs on its own.
We understand the problem. We’ve lived it with you.
For 22 years our team has worked inside UK Gift Aid, alongside charities like yours, and we hear the same thing every time. Gift Aid is one of your most important income streams, but declarations arrive from multiple channels: solus and repair mailings, donation and regular giving campaigns, reaffirmations, fulfilment houses and fundraising platforms, on paper, online and by phone. Each one is asked differently and lands somewhere different, across supporter care, data teams and third parties. We know running all those channels is complex and time-consuming. So we set out to fix it.
One ask. Every channel. One place.
A solus or repair mailing, a donation or regular giving form, a reaffirmation, a fulfilment house or a fundraising platform: every supporter sees the same HMRC model declaration in your branding, and every answer lands in one Foundry platform, dated and with its evidence.

A real Foundry screen. Example charity.
Foundry launches with Solus (letters and email), Flow (Gift Aid in your own forms) and Vault (the web declarations you already hold), plus the Whitemail add-on. Text and Voice are coming soon.
No paper forms. No retyping. We do the hard part.
If a supporter pays enough UK tax, their eligible gift is worth more to you once you hold their Gift Aid declaration.
- 1Bring in supportersSend us your mailing list, the same file you send your mailing house. Using Cascade? Pick supporters straight from it instead.
- 2We make every letterYour words, each with its own code and QR, ready for your printer or mailing house.
- 3They declare on your siteA few short screens, in your brand.
- 4You claimSorted, with the evidence, and ready to claim once Foundry’s 30-day cooling-off ends.

100 free credits a month. Forever.
Free forever: 100 credits every month to ask your supporters for Gift Aid, and watch your Gift Aid grow. Every declaration a supporter makes is always captured and kept safe. For many small charities, that’s all they’ll ever need. Foundry launches in November 2026. Beta test it now.
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