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GST Calculator

Add or remove Australian GST (10%) from any amount. Suitable for BAS reporting, invoicing, and business tax purposes.

GST Calculation
Amount ?
$
Amount Type
GST Rate ?
%
Quantity
items

Bulk Calculator — multiple line items

DescriptionEx-GST ($)GST ($)Inc-GST ($)
$50.00$550.00
$20.00$220.00
$0.00$0.00
TOTAL$700.00$70.00$770.00
Results
GST-Inclusive Price
$1,100.00
GST component: $100.00
Per UnitTotal
GST Quick Reference

GST applies to:

  • Most goods and services in Australia
  • New residential property (not resale)
  • Commercial property transactions
  • Imports over $1,000 (low-value: GST collected by seller)

GST-free supplies include:

  • Basic food (fruit, vegetables, meat, bread)
  • Medical and health services
  • Education courses
  • Exported goods and services
  • Financial services (input-taxed, not GST-free)

Source: ATO (ato.gov.au). Always confirm with your tax adviser.

About Australian GST

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. It was introduced on 1 July 2000. GST is administered by the ATO.

Who Pays GST?

Businesses with an annual turnover of $75,000 or more (or $150,000 for non-profits) must register for GST. Once registered, you collect GST on sales and can claim back GST credits on business purchases (input tax credits).

Business Activity Statement (BAS)

Registered businesses report and pay GST through a Business Activity Statement (BAS), lodged monthly, quarterly, or annually depending on your turnover.

1/11th Rule

The GST component of a GST-inclusive price is always 1/11th of the total. E.g. a $110 item includes $10 GST (110 ÷ 11 = 10). This is the standard method for extracting GST from GST-inclusive prices.

GST and Property

New residential premises and commercial property attract GST. The margin scheme can reduce GST for property developers. Existing residential property sold by private individuals is generally not subject to GST.