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Planned myIR outage We’re carrying out maintenance work on myIR over the weekend, and there may be an outage or disruption of service between midnight and 4am Sunday morning.

Budget 2024 | The Government has confirmed changes and provided more information on FamilyBoost. Find out more: FamilyBoost

Budget 2024 | The Government has confirmed changes to personal income tax, the independent earner tax credit, in-work tax credit, and the minimum family tax credit. Find out more: Personal income tax threshold changes

View and download the GST software developer kit (SDK) to help you integrate:

  • test scenarios
  • test data
  • sample messages for each service operation - requests and responses
  • the schema (XSD) and supporting WSDL for the return service
  • the identity and access authentication flow and sample curl commands
  • the return service build pack for GST to view data definitions and response status codes.

GST software developer kit (SDK) on GitHub


Use the Getting started guide to find out how to access our sandbox (mock services) and test environments.

Getting started guide

Supporting services

Identity and access service

Last updated: 28 Apr 2021
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