The Australian Business Number (ABN) is a single identifier for all business dealings with the tax office and for dealings with other government departments and agencies.
Instructions and form for companies and other entities to register for an ABN. The application form is a sample form - please do not print it off with the intent to complete and submit it. Alternative lodgment options are listed on this page. NAT 2939
Complete this application form if you do not require an Australian business number (ABN) and intend to/or have withheld an amount from a payment to a supplier who has not quoted their ABN on an invoice or document. (NAT 3377)
Instructions and application form to register for an ABN (sole traders). The form is a 'sample' only - please do not print it off with the intent to complete and submit it. Alternative lodgment options are listed on this page. NAT 2938
This document outlines the roles and responsibilities and who is authorised to appoint an entity representative, public officer and authorised contact.
Information for clients who have previously had an ABN and ceased business and are re-commencing business or starting a new business and would like to use their previous ABN.
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