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Inactive ABNs reviewed

Last updated 17 July 2023

We regularly review Australian business numbers (ABN) to identify inactive ABNs for cancellation. We may select your client’s ABN for review if they haven’t reported business income in their tax return, and there are no other signs of business activity in their lodgments or third-party information.

We’ll contact you or your client in writing if your client’s ABN is at risk of being cancelled. If your client is:

  • carrying on a business – use the automated phone system to tell us they still require their ABN. It's easy to use and available 24/7. This is the fastest way to respond, other methods of contacting us may not be received in time and can result in the ABN being cancelled.
  • no longer in business – you don’t need to do anything. We’ll cancel the ABN.

If we’ve cancelled your client’s ABN and they’re still entitled to one, they’ll need to re-applyExternal Link to re-activate their ABN.

For more information on the ABN cancellation program, visit ABR IntegrityExternal Link.

If you’re unsure of the legitimacy of communication from us, check our communication to ABN holdersExternal Link.

QC72721