Free GST calculator: Add or subtract 10% GST

This free GST calculator helps you quickly calculate the goods and services tax. Perfect for freelancers, contractors, and small businesses in Australia.

Free GST calculator

Calculate your GST amount

The price already includes GST:
Price including GST Price excluding GST GST
Taxable good or service 90,00 10,00
The provided price is exclusive of GST:
Price excluding GST Price including GST GST
Taxable good or service 110,00 10,00

What is GST?

The goods and services tax (GST) is a type of consumption tax that’s added to purchase and sales in Australia. Businesses that are registered for GST must add this tax to their sales, collect GST from customers, and remit it to the government.

This free GST calculator makes it easier to find the price and the GST amount.

What is the GST rate in Australia?

The GST rate in Australia is 10%, implemented on most goods and services, except for exemptions such as basic foods, certain medical and healthcare services, and specific educational courses. The tax was introduced on 1 July 2000.

Calculating GST

Work out the price including GST

If you want to add GST to the existing price of a product or service, you multiply the price by 0.1. The amount you get should be added to the price. If you want to know the total price, you simply multiply the original price by 1.1.

Exclude GST from total amount

To work out how much GST is included in a total price, divide the price by 11. If you want the total price before GST was added, divide by 1.1.

Calculating GST
Who has to register for GST?

You have to register for GST in Australia when you have a turnover of at least AU$75,000.

If you run a taxi or limousine company you have to register regardless of what your turnover is.

Once you’re registered for GST, you have to add GST to your invoices, unless you’re selling GST-free items.

You can read more about GST on the Australian Taxation Office website.

Who has to register for GST?

Manage GST easily with free invoicing software

Everything you need to invoice in Australia:

  • Unlimited invoices
  • GST is calculated for you
  • Upload your logo
  • Send directly to your clients
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Mia FlemingBurleigh Miami Swim School
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