Australian GST & Tax Glossary

373 terms explained in plain English, each with a worked example and a link to the official ATO guidance. Search, filter by topic or jump to a letter.

Guides

In-depth guides to GST and the wider Australian tax system.

What is GST? A plain-English guide

How Australia's Goods and Services Tax works, who pays it, who collects it and where it fits in the tax system.

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How to calculate GST: formulas and worked examples

The arithmetic behind adding GST to a price and removing it from a GST-inclusive price, with worked examples.

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GST registration: when and how to register

The registration threshold, who must register, voluntary registration, and what changes once you are registered.

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GST rates and categories: taxable, GST-free and input-taxed

The three GST categories explained, with examples of each and how they affect credits.

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Tax invoices: what they are and what they must show

When you need a tax invoice, what it must contain, and how adjustment notes and recipient created invoices work.

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Input tax credits: claiming back the GST you pay

What you can claim, what you cannot, and how private use and partial purchases affect credits.

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The Business Activity Statement (BAS) explained

What the BAS is, how often to lodge it, the key labels, and how to pay or claim a refund.

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Cash or accrual accounting for GST

The difference between the cash and accruals methods and which one suits your business.

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GST on imports, exports and international sales

How GST applies when goods or services cross the border, including exports, imports and digital services.

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GST and property: sales, rent and the margin scheme

How GST treats residential and commercial property, new homes, going concerns and the margin scheme.

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GST compliance, record keeping and penalties

What records to keep, for how long, and what can happen if you lodge late or get GST wrong.

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GST in specific situations: food, health, sharing economy and more

Quick answers on how GST treats common situations such as food, education, ridesharing, donations and gifts.

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Australian taxes at a glance: beyond GST

A map of the main taxes administered by the ATO and by the states, and where GST fits.

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Twelve common GST mistakes and how to avoid them

The errors that most often cost small businesses money, with a checklist for fixing them.

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ATO resources and where to get help

The official ATO pages worth bookmarking, plus other places to get free or paid help.

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Glossary terms

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Official ATO pages