GST calculator for Australia
Add GST to a net amount, strip it back out of a total, and price from cost to shelf — using Australia's own rates and currency.
GST in Australia, at a glance
These are the published figures the calculator starts from. Every one of them is editable, because the rate on your invoice is the rate that matters.
| Item | Value |
|---|---|
| Tax name | GST |
| Standard rate | 10% |
| Other published rates | 0% |
| Currency | AUD |
| Registration threshold | A$75,000 |
A worked GST example
Computed by the same code the calculator runs, so the figures here are exactly what the tool produces.
| Item | Value |
|---|---|
| Before tax | A$1,000.00 |
| GST 10% | A$100.00 |
| Total including tax | A$1,100.00 |
| Tax recovered from the total | A$100.00 |
Three steps
- Choose Australia, and the 10% standard rate and currency are applied.
- Enter your amount, and say whether it already includes GST.
- Read the split, or switch to the margin tab to price the item.
GST questions for Australia
What is the standard GST rate in Australia?
10%. Reduced and zero rates also apply to particular goods and services, and they are listed in the table above — pick one of the slabs, or type the rate your invoice uses.
How do I take GST back out of a total?
Divide by 1 plus the rate rather than multiplying by it. At 10%, a total divided by 1 plus 10% gives the amount before tax, and the difference is the tax. Choose "Remove tax" and this is done for you.
Do I have to register for GST?
Registration usually becomes compulsory above a turnover threshold, which is shown in the table above where one applies. Thresholds have conditions and exceptions, so confirm your position with Australia's tax authority or your accountant.