From 06 April 2013, most charities, unless very small, have been able to reclaim Gift Aid on donations up to £20. From the 2016/17 tax year the combined value of these donations can be up to £8,000 per year (previously up to £5,000). This is the equivalent of a free £2,000 each year. Full details about the scheme are available at: https://www.gov.uk/claim-gift-aid/small-donations-scheme.