Do I need to pay taxes if I sell an alt coin for bitcoin then rebuy a different alt coin. I never took out actual USD so I am unsure how that would work. Or am I only taxes on actual USD made when I cash out?
Well, if you want to be honest with your country , then of course you can show them trading on your account , and from the profits to pay taxes, but for example in my country the payment for the crypto currency is not yet until 2021!