The fastest way to cancel your client's Australian business number (ABN) is online using an AUSkey. You must be recorded against their ABN, which can be done via the tax agent portal.
All changes made to the ABN online will take effect immediately.
Note: The ABR Dashboard provides current information about ABR availability.
You should request the cancellation of your client's ABN if their business:
If you're unable to cancel your client's ABN using the link above, contact us or lodge a form by mail.
Cancelling an ABN will cancel:
Before you cancel your client's ABN, ensure all lodgement, reporting and payment obligations with any government agencies the business deals with are met.
Note: If you want to cancel your client's pay as you go withholding, you must cancel it before you cancel the ABN.