GST Due Dates 2026 - 2027

Already calculated your GST using our GST Gist Guide?

Great! Now let's talk about your filing obligations and when you need to pay.

Understanding Your GST Filing Obligations

The IRD sets three different filing frequencies for GST, and your turnover determines which category you fall into. Here's what you need to know:

Six-Monthly Filing

  • Available only for businesses with sales under $500,000 in any 12-month period

  • Must apply to IRD for approval to file six-monthly

  • Suitable for businesses with consistent, straightforward transactions. It can be take time to collate six months’ worth so you want to make sure you have the tools to keep accurate records.

January and July

February and August

March and September

April and October

May and November


Two-Monthly Filing

  • Required for businesses with annual turnover under $24 million

  • Suits those who find regular filing helpful in staying on top of admin

  • Businesses are assigned to either Group A or Group B


Monthly Filing

  • Mandatory for businesses with annual turnover over $24 million

  • Available by choice for businesses who prefer monthly filing

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