Crypto is getting more popular each day, with exchanges opening their doors to customers from around the world. I'm aware that there are a few places with zero capital gains tax on crypto (eg: El Salvador and Puerto Rico).
But I'm curious to know which countries have the highest taxes? And do you think there's a chance they will lower them in the future?
Your input would be greatly appreciated. Thank you very much.

I never stopped to think about this, so I did some research and was very surprised for what I discovered.... Countries that I believed to be more "pro-bitcoin" charge very high taxes. Check it out, and correct me if I've made any mistake on my research:
Japan: They consider the tax on cryptocurrencies as an "miscellaneous income" and have a progressive rate that goes up to 55%;
Denmark: They consider a tax that can be compared to financial gains like stocks, with rates varying and reach up 56%;
Israel: The curious thing there is that they tax gains from bitcoin and other cryptocurrencies between individuals at up to 50%, but are studying proposals for exemptions for foreigners;
Australia: Cryptocurrency is treated as an asset, and gains are taxed as if they were personal income, reaching up to 45%, but this rate drops by half if you hold it for more than a year.
Here in
Brazil, where I live... there is currently a tax exemption for transactions up to R$ 35,000 (Brazilian coin)
by month... approximately $ 6k. But this will change next year when the government will start charging 15% tax on all transactions.