- 07 September – Monthly Pay-As-You-Earn (PAYE) submissions and payments
- 23 September – Value-Added Tax (VAT) manual submissions and payments
- 29 September – Excise Duty payments
- 30 September – Corporate Income Tax (CIT) Provisional Tax payments where applicable
- 30 September – End of the 2nd Financial Quarter
- 30 September – Personal Income Tax (PIT) top-up Provisional Tax payments.
