Malta, one of the best laws for crypto business.

Slovenia has the biggest shopping center (Btc City) in Europe, possibly the biggest in the world where they accept cryptocurrencies. They have no tax for crypto if you have less than 100 tradable days per year.  Homeland of the oldest bitcoin exchange still operating today - Bitstamp. They even have bitcoin monument.

Belarus , crypto is legalised here. No tax on crypto.

Japan, cryptos are pretty well accepted and used.

Switzerland, very good for crypto business, specially so called crypto valley in the Zug district (canton).

Portugal  crypto tax free

Panama, no tax on crypto

Puerto Rico, tax free for crypto

Germany, no tax if you hold crypto 1 year

Singapore, one of the attractive countries for cryptos, no tax on crypto trading

Liberland, a micro state, very pro crypto oriented.

Gibraltar, crypto friendly