


Tax return filing opens 1 April 2026. The due dates are:
Provisional tax:
If you need to pay provisional tax (2025 tax > $5,000) the due dates are as follows:
- 1st Installment: 28 August 2026
- 2nd Installment: 15 January 2027
- 3rd Installment: 7 May 2027
Without extension: Most people won’t have an extension. The due date is 7th July 2026.
With an extension or linked to an accountant or tax agent: The tax return is due by 31st March 2027.
You will need to have paid this on or before 7th April 2027.
If you’re feeling overwhelmed in filing your 2026 tax return and you own a New Zealand small business, get in touch! We can help with your tax returns and more.
