Australian GST
Australia GST Calculator 2026
Australia’s Goods and Services Tax is generally 10%. This calculator adds GST to a price or extracts the GST from a GST-inclusive total, which is useful for invoices and business activity statements.
Official Standards & Rule Matrix
Rate10% standard GST rate
Two directionsAdd GST or remove GST
Invoice viewGST-exclusive, GST and GST-inclusive amounts
ScopeEstimate only; some supplies are GST-free or input-taxed
How to use this tool
- Enter the amount before or after GST.
- Select whether you are adding or removing GST.
- Review the GST amount and the resulting total.
- Check whether the supply is taxable, GST-free or input-taxed before invoicing.
Computed completely in your browser. No personal data or numbers are transmitted over the network.
Frequently Asked Questions
- Is all GST 10%?
- The standard rate is 10%, but some supplies are GST-free or input-taxed. The calculator applies the standard rate you select.
- How do I remove GST from a total?
- Divide the GST-inclusive total by 1.10 to get the GST-exclusive amount. The difference is the GST. The calculator does this for you.
- Do I need to register for GST?
- Registration depends on your turnover and business type. Check the current ATO threshold and rules.
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