GST Calculator

Add or remove 10% Australian GST from any price — results update as you type.

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Australian GST rate is 10%. Results rounded to the nearest cent. General guidance only — not financial or tax advice.

GST in Australia

How GST works in Australia

The Goods and Services Tax (GST) is a broad-based 10% tax on most goods and services sold in Australia. It was introduced on 1 July 2000. GST is collected by registered businesses at each step of the supply chain, but ultimately paid by the end consumer. If you are a GST-registered business, you charge GST on taxable sales and claim credits (input tax credits) for the GST included in your business purchases. The net amount — GST collected minus credits — is reported and paid to the ATO via your Business Activity Statement (BAS).

Adding vs removing GST

Adding GST means multiplying a GST-exclusive price by 1.1 to get the total including GST. For example, $100 × 1.1 = $110. Removing GST means dividing a GST-inclusive total by 1.1, or equivalently multiplying by 10/11. On a $110 invoice, the pre-GST amount is $100 and the GST is $10. A common shortcut: the GST component of any GST-inclusive price is always 1/11th of the total. This is because GST is calculated as 10% of the pre-GST price — and the pre-GST price is 10/11ths of the total.

GST-free and input taxed supplies

Not everything attracts GST. GST-free supplies include most basic food items (fresh fruit, bread, milk), many medical and healthcare services, educational courses, and exports. Input taxed supplies — such as residential rent and most financial services — also don't charge GST, but businesses making these supplies generally cannot claim input tax credits on related purchases. A common mistake is assuming all food is GST-free: takeaway food, restaurant meals, confectionery, and ice cream are taxable. When in doubt, check the ATO's GST food guide.

GST registration threshold

You must register for GST if your business has a GST turnover of $75,000 or more in a 12-month period ($150,000 for non-profit organisations). If you are a taxi, limousine, or ride-sharing driver, you must register regardless of turnover. Registering below the threshold is optional but can be advantageous if you have significant GST-inclusive business expenses you want to claim as input tax credits. Once registered, you must lodge a BAS (monthly, quarterly, or annually) and remit any net GST to the ATO.

Frequently asked questions

What is the GST rate in Australia?: Australia's GST rate is 10%. It has been 10% since GST was introduced on 1 July 2000. The rate applies to most goods, services, and other items sold or consumed in Australia. Some supplies are GST-free (0% rate) or input taxed, meaning no GST is charged, but the headline rate for taxable supplies remains 10%.
How do I add GST to a price?: To add GST, multiply the GST-exclusive amount by 1.1. For example, $250 × 1.1 = $275. The $25 difference is the GST. Alternatively, calculate 10% of the price and add it: $250 × 10% = $25, then $250 + $25 = $275. On a tax invoice, the GST-exclusive price and the GST amount must be shown separately for invoices over $1,000.
How do I remove GST from a price?: To remove GST from a GST-inclusive total, divide by 1.1. For example, $275 ÷ 1.1 = $250 (the pre-GST price). The GST component is the difference: $275 − $250 = $25. A quick mental shortcut: the GST is always 1/11th of the GST-inclusive price. So $275 ÷ 11 = $25 GST.
What goods and services are GST-free?: GST-free items include: most basic foods (fresh produce, bread, dairy, eggs, meat); most medical and health services; most educational courses at Australian universities, TAFE, and schools; exports of goods and services; and some childcare services. Taxable food includes restaurant meals, takeaway food, confectionery, soft drinks, alcohol, snack foods, and health foods. When uncertain, use the ATO's GST food guide or consult your registered tax agent.
Do I have to register for GST?: You must register for GST if your business turnover reaches $75,000 in any 12-month period ($150,000 for non-profits). Ride-sharing and taxi drivers must register regardless of turnover. If you are below the threshold, registration is optional — but registering lets you claim input tax credits on GST-inclusive business expenses, which can be beneficial if you have high costs. Once registered, you must charge GST on taxable sales and lodge a Business Activity Statement (BAS) regularly.
Is GST the same as VAT?: GST and VAT (Value Added Tax) are economically equivalent — both are a percentage tax on consumption collected at each stage of the supply chain. Australia calls it GST; most European countries call it VAT. The key difference is the rate: Australia's GST is 10%, while European VAT rates typically range from 15% to 27%. The mechanism is the same: businesses charge the tax, claim credits for tax they paid on inputs, and remit the net amount to the government.