No. If you hold a year you get taxed a lower %, long term capital gains tax, than if you sell --or day trade obviously -- less than a year at a higher % (short term capital gains tax). But not till you sell. And Losses offset the taxes.

You get taxed on any paper earnings from trades which is the big sticking point. For example, if you trade ETH for ADA and if your ETH was up you pay taxes on that profit even though you never actually realize any profit.