Self assessment gift claims

I get confused by the language used around gift aid. If theoretically I have donated £100 in any given year is it £25 (gift aid amount charity gets), £100 (my actually gift amount) or any other combination of amount I actually put on the self assessment? I have always put the £25 amount. Does this mean I have overpaid and could claim back?

Hi,

The charity gets the gift aid amount plus your actual donation so in your example they would get £125.

On your return you should declare your actual donation and further relief would be due to you if you are a higher rate tax payer. You can see guidance here:

Tax relief when you donate to a charity

Thank you.