Charity credit cards can offer a way of donating to a good cause, while receiving a competitive rate of interest, according to a price comparison website.

Although over half of all UK adults are donating to charitable causes, the recession has affected charity giving, with adults raising an estimated £9.9 billion for charity in 2008/2009; £1.3 billion down on 2007/2008 figures.

When taking out a charity card, the charity automatically receives a one off payment, after that most providers donate a percentage of everything you spend directly to the charity.

Breakthrough Breast Cancer offers a card with an APR of 15.9 per cent which donates £40 if the card is used within 90 days of opening the account. An additional 25p is given for every £100 spent thereafter.

Cards are also available for children's charities NSPCC and Unicef, as well as the British Heart Foundation. All the products make a contribution to their cause for every additional £100 spent on the card.

Peter Harrison, credit card expert at the price comparison site, said that using certain products can make donating easier at a time when people are struggling with their finances.