Australia GST Calculator
Add or remove 10% GST instantly. Calculate GST-inclusive and GST-exclusive prices for Australian goods and services.
Australian GST Calculator — Everything You Need to Know
The Goods and Services Tax (GST) is a broad-based tax of 10% on most goods, services and other items sold or consumed in Australia. Introduced on 1 July 2000 under the Howard Government, GST replaced the former wholesale sales tax system and a range of state-based taxes. It is administered by the Australian Taxation Office (ATO).
This free GST calculator lets you add 10% GST to a price (GST-exclusive to GST-inclusive) or remove GST from a price (GST-inclusive to GST-exclusive) in one click — the fastest way to calculate Australian GST online.
How to Use This Australian GST Calculator
- Choose Add GST to calculate the GST-inclusive price from a GST-exclusive (net) price.
- Choose Remove GST to find the GST-exclusive price and GST amount from a GST-inclusive price.
- Enter the dollar amount.
- Click Calculate. Your GST-exclusive amount, GST amount, and GST-inclusive amount are shown instantly.
- Click Copy next to any figure to copy it to your clipboard.
Worked Examples
GST +
Adding 10% GST: A$100.00 (excl. GST) × 1.10 = A$110.00 (incl. GST). GST = A$10.00.
GST −
Removing 10% GST: A$110.00 (incl. GST) ÷ 1.10 = A$100.00 (excl. GST). GST = A$10.00.
Australian GST Rate History
| Date | Rate | Note |
|---|---|---|
| Jul 2000 | 10% | GST introduced by the Howard Government — current rate |
| 2010–2019 | 10% | Multiple reviews; rate unchanged despite proposals to raise to 15% |
| 2025 | 10% | Rate remains at 10% — no changes legislated |
GST Registration Threshold in Australia (2025)
You must register for GST in Australia if your business has a GST turnover of A$75,000 or more per year (A$150,000 or more for non-profit organisations). GST turnover is your gross income from sales, not profit. Rideshare and taxi drivers must register regardless of turnover.
You can register voluntarily below this threshold. Registration is done through the ATO's Business Portal or myGov. Once registered, you need an Australian Business Number (ABN) and must lodge Business Activity Statements (BAS) — monthly, quarterly, or annually depending on your turnover.
Lodging BAS and Reporting GST in Australia
Registered businesses report and pay GST through the Business Activity Statement (BAS). BAS lodgement frequency depends on GST turnover: monthly (turnover ≥ A$20M), quarterly (most small businesses), or annually (turnover < A$75K with ATO approval). The BAS is lodged through the ATO's Online Services for Business, myGov, or via registered tax agents.
On your BAS, you report: GST collected on sales (1A), GST credits on purchases (1B), and the net GST payable (or refundable). If your GST credits exceed GST collected, the ATO will refund the difference — common for businesses with large capital purchases or significant export activity.
Frequently Asked Questions — Australian GST
- What is the GST rate in Australia?
- The GST rate in Australia is 10% and has been unchanged since GST was introduced in July 2000. It applies to most goods, services and other taxable supplies. Some supplies are GST-free (0%) including most food, medical and health services, educational courses, child care and exports.
- How do I add 10% GST to a price?
- Multiply the GST-exclusive price by 1.10. For example: A$200 × 1.10 = A$220 GST-inclusive. The GST amount is A$20. Alternatively, multiply the price by 10% to get just the GST amount: A$200 × 0.10 = A$20.
- How do I remove GST from a price?
- Divide the GST-inclusive price by 1.10. For example: A$220 ÷ 1.10 = A$200 GST-exclusive. The GST amount is A$20. To find just the GST portion, divide the GST-inclusive price by 11: A$220 ÷ 11 = A$20 GST.
- What is the divide-by-11 method for GST?
- A quick mental trick: to find the GST contained in a GST-inclusive price, divide by 11. This works because GST is 1/11 of the GST-inclusive price. Example: A$330 ÷ 11 = A$30 GST. The GST-exclusive price is A$330 − A$30 = A$300. This is mathematically equivalent to dividing by 1.10.
- Which foods are GST-free in Australia?
- Most basic food is GST-free in Australia, including fresh, dried, canned and frozen fruit and vegetables; bread, cereals and biscuits (not luxury biscuits); meat, fish and eggs; milk, butter and cheese; tea, coffee and most non-alcoholic beverages. However, hot food sold ready to eat, restaurant meals, takeaway, confectionery, soft drinks, snack foods, and health food supplements are taxable at 10%.
- What is a tax invoice in Australia?
- A tax invoice is a document that a GST-registered supplier must issue for taxable sales of A$82.50 (including GST) or more. It must show: the words "Tax Invoice", the supplier's name and ABN, the date, a description of the goods or services, the GST amount or a statement that "the total price includes GST". For invoices over A$1,000, the recipient's name and ABN must also be included.
- Do overseas businesses need to register for Australian GST?
- Yes. Non-resident businesses with an Australian GST turnover of A$75,000 or more must register for Australian GST. This applies to digital services (streaming, software, downloads) sold to Australian consumers under the "Netflix tax" rules introduced in 2017, and to businesses using fulfilment warehouses in Australia. Registration is through the ATO's simplified GST regime for non-residents.
- Can I claim GST credits on business purchases?
- Yes. GST-registered businesses can claim GST credits (input tax credits) for the GST included in the price of business purchases and expenses. You need a valid tax invoice to claim credits for purchases over A$82.50. Credits are offset against your GST liability on your BAS — if credits exceed liability, the ATO refunds the difference.