The law is completely absent when it comes to anything crypto related.
Buying and selling BTC is not regulated in Portuguese law, therefore we don't have to pay anything.
If this is a crime, show me the law I'm breaking will you? Please?
How do you explain your profits to the fiscal authorities then (especially if they are big)? They might think you stole, or got them througth other illegal activities.
I think you are making a mistake, you should be careful and honest when it comes to taxes.
1 - I don't have to explain my profits when they are obtained via a non-regulated mechanism.
2 - I'm not doing anything illegal!
3 - I'm a miner and a staker! These activities don't fall under any local legislation. I mine at my own expenses, purchasing very expensive equipment, paying huge electrical bills. Then I sell my coins. I don't have to pay taxes on this!
4 - It's up to them to prove that I'm evading taxes. And I dare them to do that! Where is it written that selling ETH obtained via mining is subject to any taxes?
5 - Similar principles apply to crypto trading because all other trading is very well regulated, bonds, stocks, derivatives, etc, etc.
6 - Where does crypto fit in? Is it a currency? A bond? A stock? A commodity? Where is it defined?
7 - Crypto currencies are not regulated, hence one cannot be accused of breaking the law by tax evasion. I pay all my taxes!
I'm an honest citizen and you should be more careful before accusing people you don't know. Particularly when you don't even know waht you are talking about!
Stop spreading false information! Stop frightening people with your ignorance! And stop judging others!