This is incorrect as far as Spain is concerned. The person who has done so thinks that in Spain taxes on cryptocurrency gains are counted in the general income tax base, which, depending on the region, is around 50% at its maximum rate. This is the case for gambling winnings, for example. However, gains from cryptocurrency trading are declared as capital income, which is
taxed according to the following brackets:From 0 to 6,000 euros of capital gain, 19%. From 6,000 to 50,000 euros, 21%. More than 50,000 euros, 23%.