GST calculator
Goods and services tax (GST) is a 10% tax on most goods and services sold in Australia.
Enter a price and choose whether it already includes GST. You get the price without GST, the GST and the full price.
How it's calculated
- To add GST, multiply the price before GST by 1.1.
- To find the GST in a price that already includes it, divide the price by 11. That is the GST, and the rest is the price without GST.
- Each result is rounded to the cent.
An example
A $110 invoice that includes GST has $10 of GST. The price before GST is $100.
Frequently asked questions
What is the GST rate in Australia?
GST is 10% on most goods, services and other items sold or consumed in Australia.
Why divide by 11 to remove GST?
A GST-inclusive price is 110% of the price before GST. The GST is 10 of those 110 parts, which is one eleventh of the total.
Does every sale include GST?
No. Some sales are GST-free and others are input taxed, so no GST is charged on them. Check the ATO rules for your type of sale.
Key terms
- GST
- Goods and services tax, a broad tax on most goods and services sold in Australia.
- GST-free sale
- A sale that does not include GST, even when the seller is registered for GST.
The same calculation in other countries
United States (English)
United Kingdom
Canada (English)
Ireland
New Zealand
South Africa
Singapore
India
Nigeria
Malaysia
Philippines
Kenya
Tanzania
Ghana
Pakistan
United Arab Emirates
Uganda
Jamaica
Mauritius
Cyprus (English)
Rwanda
Sri Lanka
Malta
Oman (English)Up-to-date official data
Data checked against the official source on .
We check the official sources automatically, every day.
See all sources