At the moment in Portugal, there is also no tax for crypto. Of course that if the exchanges are registered and legal, they'll pay tax at their registration country...
Seems to be a global division between governments that accept crypto and want to have profit with it (taxes), and countries that are against crypto...
In time I don't know about the taxes, I suppose that it will be natural to have taxes on crypto if everything becomes legal and organized, but I got thinking that with the developmnet in crypto, there might be less and less need of governments and taxes....