GST Calculator Australia
Work out GST in seconds — Fin adds or removes Australia’s 10% GST for you, with the formula shown every time.
Total including GST
$110.00
- Price before GST
- $100.00
- GST (10%)
- $10.00
- Total including GST
- $110.00
Fin adds 10% on top of the price. Indicative only — general information, not tax advice.
How GST works in Australia
Australia’s GST is a flat 10% on most goods and services. To add GST, multiply the price by 1.1. To find the GST already inside a price, divide it by 11. To get the original pre-GST price, divide by 1.1. For example, a $100 service becomes $110 with GST — the GST is $10.
| You want to | Do this | Example |
|---|---|---|
| Add GST to a price | × 1.1 | $100 → $110 |
| Find the GST within a price | ÷ 11 | $110 → $10 GST |
| Get the pre-GST price | ÷ 1.1 | $110 → $100 |
General information, not tax advice. Check the GST treatment of your specific goods or services with the ATO or your accountant.
GST — common questions
What is the GST rate in Australia?
The GST rate in Australia is a flat 10% on most goods and services, in place since 1 July 2000. Some items (such as basic food, certain health and education services) are GST-free.
How do you add GST to a price?
Multiply the GST-exclusive price by 1.1. For example, $100 × 1.1 = $110, where $10 is the GST.
How do you calculate the GST included in a price?
Divide the GST-inclusive total by 11. For example, $110 ÷ 11 = $10 of GST.
How do you remove GST to find the pre-GST price?
Divide the GST-inclusive total by 1.1. For example, $110 ÷ 1.1 = $100 before GST.
When do you need to register for GST?
You must register for GST once your business turnover reaches $75,000 a year ($150,000 for non-profits). Below that threshold, registering is optional.
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<iframe src="https://ai2fin.com/embed/gst-calculator?country=AU" title="GST Calculator (Australia) by 2Fin" width="100%" height="540" style="border:0;max-width:480px;width:100%" loading="lazy"></iframe>Each embed links back to 2Fin. General information, not tax advice.
Did you know?
Australia's GST has been frozen at 10% for over 25 years, partly because changing the rate legally requires the unanimous agreement of every state and territory plus both houses of federal Parliament.
Treasury states plainly that 'legislation requires that changes to the GST base or rate require unanimous agreement by all State and Territory governments, as well as both houses of the Australian Parliament' — a political straitjacket flowing from the 1999 Intergovernmental Agreement that has kept the rate untouched since 1 July 2000.
Source: Australian Treasury — Tax White Paper, At a glance ↗Whether a frozen meal is taxed can hinge on a judge deciding what counts as a 'prepared meal' by common experience — and Simplot (maker of Birds Eye products) lost that argument in 2023.
In Simplot Australia v Commissioner of Taxation [2023] FCA 1115 the Federal Court ruled frozen vegetable-, rice- and pasta-based products were taxable 'prepared meals' or 'combination foods', applying 'common experience and common sense' about what an everyday meal is rather than the maker's own marketing.
Source: Grant Thornton — GST and food: Federal Court challenges the concept of a prepared meal ↗Let Fin track GST for you
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