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ABN (Australian Business Number)

ABN Lookup for an Australian business number

ABN Lookup is the public view of the Australian Business Register (ABR). It provides access to the publicly available information supplied by businesses when they register for an Australian business number (ABN).

Department of Industry

Apply for an Australian business number

An ABN is a unique 11 digit identifying number that businesses use when dealing with other businesses. You do not have to have an ABN, but having one will avoid having amounts withheld from payments to you; and make it easier to register for GST and other business tax registrations such as PAYG withholding. You can apply for an ABN or access and update your ABN details online.

Australian Taxation Office

Australian business number

Provides detailed information about the ABN, a single identifier for all business dealings with the tax office and for dealings with other government departments and agencies

Australian Taxation Office

Australian Business Register

The Australian Business Register (ABR) stores details about businesses and organisations when they register for an Australian business number (ABN). You can use the Register to identify and verify business information. Incudes information about AUSkey, a secure login that identifies you when you access participating government online services for business.

Australian Taxation Office

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