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GST Table Australia: 10% GST on Common Amounts, Added and Taken Out
The GST and total on common amounts, and the GST inside a price that already includes it (divide by 11).
Before GST
$100.00
GST (10%)
$10.00
Total with GST
$110.00
Quick rule: the GST inside a GST-inclusive price is the price ÷ 11.
🧾 Do I need to register for GST?
Australian GST is 10% on most goods and services. Basic food, most health and education services and some other items are GST-free. Rules last checked: October 2026. 🔒
✅ Rules last checked:
📚 Official sources: ATO
We build every tool from the official rules and re-check them when they change. Always confirm with the official source before you rely on a result.
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Ready examples
To find the GST in a GST-inclusive price, divide by 11; to find the price before GST, divide by 1.1. Taking 10% off an inclusive price gives the wrong answer. Businesses must register for GST once turnover reaches $75,000 a year ($150,000 for non-profits).
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Questions people ask
How do I work out GST in Australia?+
To add GST, multiply by 1.1. To find the GST inside a GST-inclusive price, divide the price by 11.
When must my business register for GST?+
When your turnover reaches $75,000 a year ($150,000 for non-profits), or straight away if you drive a taxi or ride-share.
What is GST-free?+
Most basic food, many health, medical and education services, and some exports are GST-free.