Free Tool
Australia GST Calculator (10%)
Calculate GST in Australia in seconds. This free GST calculator helps you add 10% GST, remove GST from totals and get accurate GST-inclusive and GST-exclusive amounts for invoicing and pricing.
Calculate GST
Australia's GST rate is a flat 10%
What is GST in Australia?
The Goods and Services Tax (GST) is a 10% consumption tax applied to most goods and services sold in Australia. Introduced on 1 July 2000, GST is administered by the Australian Taxation Office (ATO).
Why use Honcho's GST Calculator?
Our GST calculator gives you quick and accurate results in seconds, so you can work out GST without the guesswork. It’s built for Australian businesses and follows the standard 10% GST rate, helping you stay consistent in your pricing and reporting. If you need to register for GST as well, you can do it easily through Honcho.
Calculate GST instantly
Get accurate GST figures in seconds - no manual calculations needed
Works both ways
Add GST to a price or extract GST from a total - whichever you need
Reduce invoicing errors
Eliminate pricing mistakes and stay accurate across your invoices and quotes
More than a calculator
Need to register for GST too? Honcho handles your registration from start to finish
Who needs to register for GST?
You must register for GST if your business turnover is:
$75,000 or more (businesses) $150,000 or more (non-profit organisations) You expect your turnover to exceed the threshold within the next 12 months You provide taxi, limousine or ride-sourcing services (registration is required regardless of turnover) You can choose to register voluntarily if your turnover is below the threshold To learn more about GST registration requirements, visit our GST registration page
How to calculate GST in Australia
Understanding GST calculations helps ensure accurate pricing and compliance
Add GST to a price
ex GST to inc GSTMultiply the original amount by 1.10 to get the GST-inclusive total
Find GST from a total price
Extract GST portionDivide the total price by 11 to extract the GST portion
Remove GST from a price
inc GST to ex GSTDivide the total price by 1.10 to get the original amount before GST
GST formula (Australia)
• GST Amount = Price (ex GST) x 0.10
• Total Price (inc GST) = Price (ex GST) x 1.10
• GST from Total = Total / 11
EXAMPLE
GST calculation example – if a product costs $1,000 (ex GST)
- GST = $100
- Total price (inc GST) = $1,100
Frequently Asked Questions
How do I register for GST in Australia?
You can register for GST online through the ATO or let Honcho take care of it for you. Register for GST with Honcho and we'll handle the paperwork so you're set up correctly from day one.
Do I need to include GST on my invoices?
If registered for GST, you must issue a tax invoice for taxable sales of $82.50 or more (inc. GST). Your invoice must show your ABN, the GST amount and the date issued.
Can I claim GST credits?
Yes. If you're GST-registered, you can claim input tax credits through your BAS for GST paid on eligible business purchases. You must hold a valid tax invoice to claim credits of $82.50 or more.
What is GST-free in Australia?
GST-free supplies include most basic food, certain medical and health services, some education and childcare and exported goods and services. You don't charge GST on these but can still claim credits on related purchases.
Is GST the same as VAT?
GST and VAT are both consumption taxes collected at each stage of the supply chain. Australia uses GST while many other countries use VAT.