Australian GST System

Goods and Services Tax (GST) is a broad-based 10% tax on most goods, services, and other items sold or consumed in Australia. It is collected by businesses and passed on to the Australian Taxation Office (ATO).



What is GST?

GST is a value-added tax that is charged at each stage of the supply chain. Businesses registered for GST collect the tax from their customers and then pay that tax to the ATO, less any GST they have paid on their own business purchases.

How to Register for GST?

You must register for GST if your business has a GST turnover of AUD75,000 or more. You can also choose to register voluntarily if your turnover is below this threshold.

To register:

  1. Obtain an Australian Business Number (ABN).
  2. Register for GST online through the Australian Business Register (ABR) website or through your tax agent.

How and When to Pay GST?

GST is reported and paid to the ATO through Business Activity Statements (BAS). BAS are typically lodged monthly, quarterly, or annually, depending on your turnover.

Payments can be made electronically via:

  • Electronic funds transfer (EFT)
  • BPAY
  • Credit or debit card

How to Get a GST Refund?

If the GST you paid on business purchases is more than the GST you collected from sales, you are entitled to a refund from the ATO. This refund is claimed through your BAS.

What is Reverse Charge?

A reverse charge is a mechanism where the recipient of a supply is liable for the GST, rather than the supplier. This applies to certain services provided by non-residents to Australian businesses.

GST on Imports

GST is generally payable on goods imported into Australia. The tax is collected by the Australian Border Force (ABF) and is usually paid at the time of importation.

What is a Valid Invoice?

A valid tax invoice for GST purposes must include:

  • The words "Tax Invoice" stated prominently.
  • The seller's ABN.
  • The date of issue of the invoice.
  • A description of the goods or services supplied.
  • The GST amount payable, or if the GST amount is 1/11th of the total price, a statement such as "Total price includes GST".

It is essential for businesses operating in Australia to understand and comply with the GST system to avoid penalties and ensure smooth operations.


Australian Business Number


How to Get an ABN?

An Australian Business Number (ABN) is a unique 11-digit number that identifies your business. You can apply for an ABN online through the Australian Business Register (ABR) website.

Why Do You Need an ABN?

You need an ABN to:

  • Register for GST.
  • Issue tax invoices to your customers.
  • Claim GST credits on business purchases.
  • Avoid tax being withheld from payments made to your business.

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