GST Calculator
Quick answer
GST is a tax added to the price of goods and services. This calculator shows the GST amount and total price, or the base price if your amount already includes GST.
How it works
GST = amount x rate / 100. If the amount includes GST, base price = amount / (1 + rate / 100).
Frequently asked questions
Which GST rate should I use?
Use the rate your tax authority publishes for that product or service. Rates differ by item and can change.
Is this tax advice?
No. It is a simple estimate tool. Ask a tax professional before filing.