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Planned system outage | Our online services (including myIR and submitting information using software providers) will be unavailable from 6am Saturday 14 to around 6pm Sunday 15 March while we complete some system upgrades. Planned system outage in March 2026

The Minister of Revenue has introduced the Taxation (Annual Rates for 2025–26, Compliance Simplification, and Remedial Measures) Bill in August 2025.

The Bill includes proposed changes that, if passed, will take effect on or before 1 April 2026.

Other changes and residual items also come into effect in April 2026:

  • updates from Budget 2025
  • residual items from the previous Taxation Act
  • regular rate and threshold adjustments
  • other enhancements.

To help you understand what’s changing and how it may affect you, a new series of 5 short topic-based webinars is being released. Our first 2 webinars are available now:

  • GST
  • Employer.

You can watch both webinars on our website.

Changes coming in April 2026

The remaining webinars, covering income tax, international and ‘best of the rest’, will be released later this month.

We’ll share more information when these are available.

Last updated: 10 Mar 2026
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