Calculate Australian GST
Add Australia's 10% GST to a price, or extract it from a GST-inclusive price, to find the tax component.
Defaults to Australia's standard 10% rate. Some categories (fresh food, medical, education) are GST-free, adjust the rate for those.
Before GST, or GST-inclusive, depending on which direction you need.
Add GST to a pre-tax price, or extract the GST component from a GST-inclusive price.
Defaults to the standard 10% rate, but you can override it for GST-exempt or reduced-rate items.
Frequently asked
What is Australia's GST rate?
A flat 10% on most goods and services, applied nationally rather than varying by state or territory.
Are all items subject to GST?
No. Some categories, like fresh food, many medical and health services, and education, are GST-free. This tool assumes a standard-rated item by default; use the rate field to model a GST-free item at 0%.
Can I use a custom rate?
Yes. The GST rate field defaults to 10% but accepts any value, useful for exempt categories or hypothetical scenarios.
Is this financial or tax advice?
No. This is a general estimate for planning purposes only, not financial, investment, or tax advice. Rates and figures can change. Confirm current numbers with a qualified professional before making decisions.