If HMRC recognises you as a charity or CASC, your GivenGain donation page will provide donors with the option to include Gift Aid as part of their donations.
All Gift Aid donation declarations and schedules are available in your GivenGain charity account, under Reports > Gift Aid. To claim Gift Aid, log in and export this information and submit it to HMRC online at https://www.gov.uk/claim-gift-aid-online. You should receive payment within 5 weeks.
Visit the HMRC website to find out more about claiming Gift Aid as a charity.