20 February 2013 at 15:26
You have to submit an IRP6 - https://www.taxtim.com/za/what-is-provisional-tax-how-and-when.php
If you earned money as a sole prop then you would add the net income of this "business" to the other income you earned from your job and make that the expected income for the year. The PAYE you paid would be included in the form later on. Have a look at the guide in that link and let me know if you have any further questions.