An ABN is a number that identifies your business. It doesn't replace your tax file number. Find out how to register an ABN. You'll need it for tax and other business activities.
An ABN is a unique 11 digit number that identifies your business to the government and community. You can use an ABN to:
Registering for an ABN through the Australian Government’s Business Registration Service is free.
Not everyone needs an ABN. To get one you need to be running a business or other enterprise.
Visit the Australian Business Register (ABR) website to find out about your entitlement to an ABN.
If you apply for an ABN and you’re not entitled to one, your application may be refused. The reason for refusal will be explained to you by the Australian Taxation Office.
Before you register for an ABN, make sure you’ve got the required information.
You can apply for an ABN and other key business registrations through the Business Registration Service. Before you register, make sure you have:
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