GST Calculator Australia
A flat 10%, so divide by 11 to go backwards.
Rates change with budgets and local ballot measures, and the rate that applies depends on the delivery address and product category. Treat these as planning figures, not as a filing.
Price including GST
$1,100.00
$100.00 of GST at 10%
A flat 10% with GST-free categories including most basic food, health and education. Registration is compulsory above A$75,000 of annual turnover.
How the GST Calculator Australia works
Australian GST is a flat 10% with a short list of GST-free categories, which makes it one of the simplest systems to work with. The useful shortcut: the GST inside a GST-inclusive price is exactly one eleventh of it, so divide by 11 rather than multiplying by 10%.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
Why divide by 11?
Because at 10% the GST inside a gross price is 10/110, which is one eleventh. A $110 inclusive price contains $10 of GST. Taking 10% of $110 gives $11, which is wrong.
What is GST-free in Australia?
Most basic food, medical and health services, education courses, and exports. GST-free is equivalent to zero-rated — you charge nothing but can still claim input credits on related costs.
When must I register?
Above A$75,000 of annual turnover, or A$150,000 for non-profits. Ride-share and taxi drivers must register from the first dollar regardless of turnover.
Do overseas sellers charge Australian GST?
Yes, on low-value imported goods at or below A$1,000 sold to Australian consumers, and on imported digital services. Registration is required once sales into Australia exceed the threshold.