Australia GST Calculator
Enter an amount and choose whether it already includes GST or not.
Reflects Flat 10% (since 2000) rates (effective 2000-07-01).
Last checked 2026-09-11 · v1. Tax rules change — verify against an official source before relying on this for a filing.
Source.
Australia GST Calculator
Add or remove Australia’s 10% GST from an amount.
This is an estimate for general informational purposes only. Some goods and services are GST-free or input-taxed — verify the correct treatment for your specific item with the ATO.
Australia’s Goods and Services Tax (GST) is a flat 10% broad-based tax applied to most goods, services and other items sold or consumed in Australia. A limited list of items (basic food, some health and education services) are GST-free.
Example
- With the default values shown above, this calculator returns: Net Amount (excl. GST) ≈ AUD 100.00; GST Amount ≈ AUD 10.00; Total (incl. GST) ≈ AUD 110.00.
Frequently Asked Questions
What is GST-free in Australia?
Most basic food, many health and medical services, and some education courses are GST-free. Most other goods and services are taxed at the standard 10% rate.
Has the GST rate ever changed?
No — GST has remained at a flat 10% since it was introduced on 1 July 2000.