Australian business number
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The Australian Business Register (ABR) allows you to apply for an Australian business number (ABN) and other tax registrations such as:
The best way to register for an ABN is via the ABR website at www.abr.gov.au.
You can also register for an AUSkey through the ABR. AUSkey allows you to view and update your ABN details online.
You can order a paper copy of the form ABN registration for individuals (sole traders) (NAT 2938):
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