All companies are required to submit tax returns to SARS 3 times each year:
First provisional tax return - due 6 months after your financial year end.
Second provisional tax return - due on your financial year end
Income Tax Return - due within 12 months of your financial year end
For example, if your company financial year end is February then you would need to submit your tax returns on these dates:
First provisional tax return - 31 August
Second provisional tax return - 28 February
Income Tax Return - 28 February (the following year)