Australia GST Calculator
Calculate Australian GST online for free — add or extract the flat 10% rate from any amount. Runs entirely in your browser — nothing you enter is uploaded.
Australia's GST rate is a flat 10% on most goods and services (some items like basic food are GST-free).
How to use australia gst calculator
- Enter the amount
And whether it already includes GST.
- Calculate
See the GST amount and the other figure.
Features
Rates and thresholds are inputs you can change, not hidden constants.
Calculates locally with no sign-up or server request.
Your financial details are never uploaded.
Supported formats and limitations
Text and structured input supported by this tool.
Use cases include personal workflows, content preparation, and quick checks. Review output before relying on it for legal, financial, accessibility, or production decisions.
Frequently asked questions
Is everything charged GST in Australia?
No — basic food, most health and education services, and a few other categories are GST-free. This calculator assumes the standard 10% applies; skip it for GST-free items.
How do I work out the GST already included in a price?
Choose 'Inclusive of GST' — the calculator divides by 1.1 to find the GST-exclusive amount, then shows GST as the difference, which is correct; simply taking 10% of the GST-inclusive price would overstate the GST component.