Hope this helps
To work out if you have paid enough tax to cover your donations, divide the donation value by four and compare this figure to the amount of tax that you have paid for the year. Remember to add all the Gift Aid donations you have made in the tax year and that any tax at source is only an estimate and so may not be the final amount due to HMRC – you may be due a refund or have a balance to pay. See How do I work out my tax? for more information.
You should note that from 2016/17, due to the personal savings allowance and the dividend allowance, most people will not need to pay tax on their savings interest or dividends. Both dividends and bank interest are paid gross (banks no longer automatically deduct tax from interest before it is paid, dividends no longer carry a 10% tax credit).
You may have been used to relying on the tax paid on your savings interest and the tax credit on your dividends to cover your Gift Aid donations.
If you no longer pay tax on them due to the new rules, but continue to donate to charity under a Gift Aid declaration, the charity will still assume the donation has come from someone paying tax and claim an amount back from HMRC. You might then be faced with a bill from HMRC for the amount the charity has claimed.
You may wish to cancel your Gift Aid declaration. You can still donate to charity, but the charity cannot claim Gift Aid relief from HMRC. You should also bear this in mind when visiting attractions which invite you to Gift Aid your ticket entry.
Look at the example Mr Green to see how this works.
You can also see from the Mr Green example that in previous years, the 10% dividend tax credit may have meant that you paid enough tax over the year to use Gift Aid, even if you were otherwise a non-taxpayer.