@FediThing @feditips Most countries will have a minimum earnings value that will make the tax filling compulsive. Below that value, you will not have to file anything. Inside the Eurozone, I believe you can declare those earnings as originating in your country and your work as an export. Please contact your tax administration to clear this. I believe that for a very low value, you don't need to do anything.
@Suspect_Similar
Thanks for the help, but I'm not concerned about income tax, that is already dealt with.
I am just concerned about whether I need to be keeping track of sales tax on donations. If I do, then it might mean I cannot accept donations any more.