Resources
Important Dates
20 August 2025 — Employer Deductions (All)
Employer deductions payment due for 1 to 15 August for large employers.
Employer deductions payment due for July for small to medium employers.
28 August 2025 - GST Return and payment due
Your GST return and payment is due for the taxable period ending 31 July
28 August 2025 — Overseas-based Student Loans Interim Instalment Due
Interim student loan repayments are due. They count towards your end-of-year repayment obligation.
28 August 2025 - Provisional Tax payments due
Provisional tax payments are due if you have a March balance date and use the standard, estimation or ratio options.
5 September 2025 — Employer Deductions (Large Employers)
Employer deductions payment due for 16 to 31 August for large employers.
20 September 2025 — Employer Deductions (All)
Employer deductions payment due for 1 to 15 September for large employers.
Employer deductions payment due for August for small to medium employers.
29 September 2025 - GST Return and payment due
Your GST return and payment is due for the taxable period ending 31 August.
29 September 2025 - AIM Installments due
AIM (Accounting Income Method) instalments are due if you file GST monthly and have a March balance date.
30 September 2025 — Overseas-based Student Loans
Overseas-based student loan repayments due if you do not have a temporary repayment suspension.
6 October 2025 - Employer Deductions (Large Employers)
Employer deductions payment due for 16 to 30 September for large employers.
20 October 2025 — FBT Due
Your FBT quarterly return and payment are due for the period ending 30 September if you have a March balance date.
20 October 2025 — Employer Deductions (All)
Employer deductions payment due for September for small to medium employers.
Employer deductions payment due for 1 to 15 October for large employers.
28 October 2025 — Provisional Tax Due
Provisional tax payments are due if you have a March balance date and use the ratio option.