Australia GST Calculator
Add 10% GST to a price or work out the GST in a GST-inclusive amount.
Australian GST rate last updated · reference source
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Currency: Amounts are calculated in the currency you select; this site does not convert between currencies and does not use live exchange rates.
Dated static reference; no live data is fetched. Verify current source values and assumptions before relying on results.
What this tool does
Calculates Australian goods and services tax at the flat 10% rate in both directions: GST-exclusive to GST-inclusive, and extracting GST from a GST-inclusive price (one-eleventh of the total).
How to use the Australia GST Calculator
- Enter the amount in your own currency.
- Choose whether the amount already includes GST or not.
- Select the applicable rate.
- Read the net amount, GST and gross total; copy or print the result.
Formula
GST-exclusive: GST = price × 0.10. GST-inclusive: GST = price ÷ 11; net = price ÷ 1.1
- price
- Amount entered in AUD or your selected currency
Worked example
A $495 GST-inclusive tax invoice: the GST component is one-eleventh of the total.
Inputs
- Amount$495
- Amount entered isGST-inclusive (find GST)
Result
- Net amount (excl. GST)$450.00
- GST$45.00
- Gross amount entered$495.00
Australian GST quick reference
| Item | Value |
|---|---|
| GST rate | 10% |
| GST in an inclusive price | Price ÷ 11 |
| Registration threshold | $75,000 turnover |
| GST-free examples | Most basic food, some health and education |
Results explained
- Net amount
- Price before GST.
- GST
- GST payable at the selected static rate.
- Gross amount
- Price including GST.
Frequently asked questions
Divide the GST-inclusive price by 11. $110 ÷ 11 = $10 GST and $100 net.
When your GST turnover is $75,000 or more ($150,000 for non-profits), or you provide taxi or ride-sourcing services.
Most basic food is GST-free, while prepared meals, snacks and soft drinks are taxable.
For sales of $82.50 or more including GST, a tax invoice must show your ABN, the GST amount or that the total includes GST, and other ATO-required details.
No. It uses the static 10% rate shown on this page and calculates locally in your browser.