Key Tax Dates

Some key tax dates below, not an exhausted list, but the most common for small business owners with a standard balance date in relation to Income Tax, Fringe Benefit Tax and Goods and Services Tax.

Employee deductions are standard 20th of the month following (exception for large employers)

There are other taxes due, and due dates that vary (student loans, AIM returns, RWT on dividends, small business cashflow loan etc.) so as mentioned, the below is a very generic list for reference. If unsure, please get in contact with us.

07th April 2025                  

  • Terminal tax payment due for 31st March 2025 financial year

07th May 2025

  • GST return and payment is due for the taxable period ending 31st March 2025

  • Final provisional tax payment due for 31st March 2025 financial year

28th June 2025     

  • GST return and payment is due for the taxable period ending 31st May 2025

7th July 2025

  • Income tax returns required to be filed for year ending 31st March 2025 - (for clients who have lost extension of time privileges)

28th August 2025       

  • GST return and payment is due for the taxable period ending 31st July 2025

  • 1st provisional tax payment due for 31st March 2026 financial year

28th October 2025    

  • 1st provisional tax payment due for 31st March 2026 financial year (6 monthly GST filers - generally sole traders)

  • GST return and payment is due for the taxable period ending 30th September 2025

15th January 2026     

  • GST return and payment is due for the taxable period ending 30th November 2025

  • 2nd provisional tax payment due for 31st March 2026 financial year

7th February 2026

  • Terminal tax payment due for 31st March 2026 financial year (for clients who have lost extension of time)

28th February 2026

  • GST return and payment is due for the taxable period ending 31st January 2026

31st March 2026

  • Income tax returns required to be filed for year ending 31st March 2025 - (for clients who have extension of time)

7th April 2026                  

  • Terminal tax payment due for 31st March 2026 financial year (extension of time clients)

7th May 2026             

  • GST return and payment is due for the taxable period ending 31st March 2026

  • Final provisional tax payment due for 31st March 2026 financial year