if you buy BTC then sell at a profit, then it's a capital gain, like if you bought some stock.
Kind of but not quite. Again, it's more like spot Forex than stocks. Forex gains are taxed like futures transactions and get 60/40 tax treatment (60% long term cap gain, 40% short term)
sure - that must be a US tax, in the UK, it's all counted as a capital gain. Can't speak for other jurisdictions. Moral of the story: check your local tax laws!
Will