Australia GST Calculator
Add GST to a price, or work out the GST already included — at Australia's standard 10% rate.
- Free, updates instantly as you type
- Defaults to 10%, or set a custom rate
Australia's standard GST rate has been 10% since it was introduced — but some goods and services are GST-free or input-taxed. Check the ATO if you're unsure whether GST applies to what you're calculating.
Frequently asked questions
What is Australia's GST rate?
10%, applied to most goods and services sold in Australia. Some categories — like basic food, health, and education — are GST-free.
How do I remove GST from a total price?
Switch to "Remove GST" and enter the GST-inclusive total. The calculator divides by 1.1 (for the standard 10% rate) to find the base amount.
Is every business required to charge GST?
Generally only businesses registered for GST (mandatory once turnover passes a threshold) charge and remit it. This calculator just does the arithmetic — it doesn't determine whether GST should apply to your situation.