I am 17 years old. I do binary trading online and also some part time programming on my own. These hobbies have not earned me a lot of money but the amount is increasing gradually. Last month I earned approximately R7,000 by doing this. I am also still in school and I'm finishing end of this year. My question is: when do I need to start paying taxes? I am not formally employed at all but I think my earnings will be more than R80,000 by the end of this year.