GST due dates depend on which country’s GST you mean and on your filing frequency, so there is no single universal “GST due date”.

Key point

  • For Canada (GST/HST) , payment and filing due dates are tied to your reporting period:
    • Annual filers usually have payments due 3 months after the end of the fiscal year, while the return itself is due in 3 months (individuals) or 6 months (most businesses) after year‑end.
* More frequent (monthly/quarterly) filers generally pay and file **one month after** the end of the reporting period, though specific dates can vary by arrangement with the tax authority.
  • For New Zealand GST , standard due dates depend on whether you file monthly, two‑monthly, or six‑monthly :
    • Two‑monthly filing periods such as 1 February–31 March have GST due around 7 May , while other periods (e.g., 1 April–30 September) have due dates like 28 October , 28 May , 28 November , etc.
* These patterns repeat each year but can shift slightly, so local tax agencies or accountants usually publish updated calendars for 2025–2026.

Why it varies

  • Country rules differ : Canada’s GST/HST rules come from the CRA, while New Zealand and India have completely different GST regimes and calendars.
  • Filing frequency matters : Monthly filers typically have more frequent but earlier due dates than quarterly or annual filers.

What to do next

  • Check which country and filing frequency you fall under (monthly, quarterly/two‑monthly, six‑monthly, annual).
  • Look up the latest official GST calendar on your tax authority’s website (CRA for Canada, IRD for New Zealand, or your local revenue agency), because specific day‑of‑month dates for 2026 can change with weekends and holidays.

If you share your country and whether you file monthly, quarterly, or annually, a more precise due date pattern can be outlined for your situation.