The Australia GST Calculator helps you quickly add or remove the 10% Goods and Services Tax (GST) from any amount. Whether you are a business owner, freelancer, online seller, or customer, this tool makes it easy to calculate GST-inclusive and GST-exclusive prices in seconds.
GST is a national tax applied to most goods and services in Australia. The current GST rate is 10%, and it applies across all states and territories including New South Wales, Victoria, Queensland, Western Australia, South Australia, Tasmania, Australian Capital Territory, and Northern Territory.
With this calculator you can:
Add 10% GST to a price
Remove GST from a GST-inclusive price
Calculate the exact GST amount
Convert between GST inclusive and GST exclusive prices
Simply enter a value in one field and the calculator will automatically calculate the rest.
Using this tool is very simple:
Select your state or territory (GST rate is the same across Australia).
Enter either:
the price without GST, or
the price including GST.
The calculator will instantly show:
the GST amount, and
the correct total price.
You only need to fill in one price field, and the calculator will automatically compute the other values.
The Goods and Services Tax (GST) is a consumption tax introduced in Australia in 2000. It is applied to most goods, services, and products sold or consumed in the country.
Key facts about GST:
The standard GST rate is 10%
Businesses registered for GST must collect GST on sales
Businesses can claim GST credits on business purchases
GST is managed by the Australian Taxation Office
Most products and services include GST in the advertised price, meaning the price you see often already includes the tax.
If you want to calculate GST manually, you can use these formulas:
Add GST
Price with GST = Price without GST × 1.10
GST amount
GST = Price without GST × 0.10
Remove GST
Price without GST = Price with GST ÷ 1.10
This calculator automatically performs these calculations for you.
A GST calculator can be useful in many situations, including:
Creating business invoices
Pricing products or services
Checking tax amounts on receipts
Calculating GST for bookkeeping
Working with online store pricing
Preparing tax reports
It is commonly used by small businesses, freelancers, accountants, and e-commerce sellers.
The standard GST rate in Australia is 10%.
Yes. The GST rate is the same nationwide across all Australian states and territories.
To remove GST, divide the GST-inclusive price by 1.10.
Multiply the price by 1.10 to include GST.
Yes. In most cases, Australian consumer prices already include GST.
