Gift Aid on charitable donations made with Gift Postal Orders has added £6m to charities' income over the past 12 months, according to the Post Office.
The Post Office is expecting a 50 per cent increase in demand for its Gift Postal Orders in the run-up to Christmas compared to last year, when the tax-efficient postal order was introduced in co-operation with the Giving Campaign.
The postal order incorporates the Gift Aid declaration on the back of the order.
The total value of donations via Gift Postal Orders, which can be bought in denominations of £5, £10 and £20, was £21m over the year.
Mark Nellthorp, director of Inland Revenue Charities, said: "The extra £6m unlocked by Postal Orders alone is an excellent example of the difference Gift Aid can make to charities. I hope the Post Office will continue to raise the awareness of Gift Aid, particularly at Christmas, which is an important time for charitable giving."