Australian GST Calculator
For a price that already includes Australia’s 10% GST, this calculator separates the GST component and the price before GST.
Estimated result—
How it works
For a GST-inclusive price, GST = total ÷ 11. Price before GST = total − GST.
Example
A GST-inclusive price of $110 contains $10 GST and has a pre-GST value of $100.
Useful things to know
- This version assumes the amount entered already includes 10% GST.
- Some goods and services can be GST-free or input-taxed.
- For accounting or tax decisions, confirm the correct GST treatment for the transaction.
About this estimate
HandyNumbers calculations run in your browser. Results are general estimates and can differ from real-world outcomes because of fees, taxes, tariffs, product specifications, rounding and individual circumstances.