If you are registered for GST, or required to be, the goods and services you sell in Australia are generally taxable unless they are GST-free or input-taxed.
This calculator can help when you're making taxable sales only (that is, a sale that has 10 per cent GST in the price).
To work out the cost including GST, you multiply the amount exclusive of GST by 1.1.
You divide a GST inclusive cost by 11 to work out the GST component.
A taxable sale must be:
- for payment of some kind
- made in the course of operating your business
- connected with Australia.
The Australian Taxation Office website explains in more detail how the goods and services tax (GST) works.