You can either pay CGT when you sell your shares, assuming a profit, or you can pay income tax. Much depends on your intent when you bought the share. If you hold a share longer than 3 years, SARS deems your intent "investment" in nature and gains are taxed by the CGT route. If your intent was a short term capital gain, then you could be taxed at income tax levels. If your gains are miniscule, you could fly under the SARS rader, I guess. I have opened up two accounts on my SFM trading - no extra cost - and all my trading is done in one account and all my investing in another. This keeps the tax clean and simple. This is my simple understanding of it. I am sure there are all sorts of sneaky clauses, and for that if you want professional advice, best chat to one.