If there is a country where cryptocurrency is legal how much is the tax that we have to pay to the government? Also, how can the government track our transactions?
If you do the transactions with the KYC verified exchanges to convert your cryptocurrencies into cash, then you need to pay the taxation and government also will have the access for the transaction and they can able to track it easily.
If you convert the bitcoin or altcoins for cash in hand, then they cannot do the tracking.