In the early days of cryptocurrency development, it seemed like a tax-free field. However, the IRS and other regulatory agencies are quickly catching up with the cryptocurrency market. In the future, investors will need to report their transactions and use tax-saving strategies to maximize their total returns in the cryptocurrency market.
BTC
cryptocurrencies.
It's not just in the future. At least here in the US the rules for paying taxes on cryptocurrency trades/sells has been clear for like 7 years. Anyone who hasn't been doing this is a tax cheat criminal and is at risk of having the IRS F up their life.
to answer your question: anyone who sells or spends cryptocurrency that is in profit must pay taxes on that profit.