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?
in my opinion you only have to pay taxes from the USD that you cash out, because if you only trading altcoin and bitcoin, in my opinion it hasn't given you income yet, so you don't need to pay taxes if you haven't cash out to USD.