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How GST works

Explains how GST works and what you need to do to meet your GST obligations.

Last updated 14 September 2026

What is GST

Goods and services tax (GST) is a broad-based tax of 10% on most goods, services and other items sold or consumed in Australia.

Some things don’t have GST included. These are called GST-free sales.

You can use the GST calculatorExternal Link on ASIC's MoneySmart website to:

  • calculate GST
  • work out how much GST is included in a sale.

What registered businesses do for GST

Generally, businesses and other organisations registered for GST will:

  • include GST in the price they charge for their goods and services
  • claim credits from us for the GST included in the price of goods and services they buy for their business.

What you need to do for GST

You need to register for GST if you run a business or other enterprise and you either:

  • have a GST turnover of $75,000 or more ($150,000 or more for non-profit organisations)
  • provide taxi travel (including ride-sourcing).

You then need to:

See our GST definitions for explanations of the terms used in this content.

If you're a small business owner, see our GST tax basics video.

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