GST calculator

This calculator explains:

How to calculate goods and services tax (GST) in Australia
The amount of GST you will pay or should charge customers
The price excluding GST and the total cost including GST

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Assumptions

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.