The following income tax returns were due by the 31 October 2013, if you were going to lodge them yourself and not through a registered tax agent / accountant:
1. Individual income tax returns;
2. Partnership income tax returns; and
3. Trust income tax returns.
Checklist for individuals http://mcnamaraandco.com/news/2013/06/income-tax-returns-for-individuals-checklist/
Checklist for businesses http://mcnamaraandco.com/news/2013/06/small-business-tax-return-checklist-for-30-june/
Please note that if you are operating a business / investment through a company (Pty Ltd) structure you have until 28 February 2014 to lodge its income tax return.