Ursegor
World Champion
Well I don't know how Spain can legally claim taxation from a dual citizenship individual when the income is coming from out of Spain. It would not seem logical, but you have a point, it is Spain.
That's fairly normal. If it wasn't logical as you say depositing money in tax havens would basically be legal (profiting from low taxation capital income in a different country). But it isn't, pretty much nowhere. Ask Hoeneß. There is also a certain logic to it. Imagine being a US/German dual citizen, depositing all your money in USA where it will be taxed it but at the same time living in Germany, profiting from German free healthcare, free education etc. It's also why the Schumacher brothers officially emigrated to Switzerland/Austria. They actually never hid that the German tax system was the reason and admitted as much.