The best way to avoid paying the most tax is to hold the crypto for over a year. If you hold for less than a year, this is qualified as a short-term swing or day trade. This qualifies for around a 40% tax rate (or something along those lines). If you hold for greater than a year, this is a long-term investment and is taxed at 10-15%, which is much lower. So my advice is, hold cryptos for over a year to avoid paying the greatest amount of taxes.