Update your ABN details
It's your responsibility to maintain your Australian business number (ABN) details.
You must update your details within 28 days of becoming aware of changes.
What can't be updated
The following can't be updated:
- business names
- legal names for individuals and sole traders who need to contact the ATO directly
- legal names for companies registered with Australian Securities & Investments Commission (ASIC).
Name changes made by the ATO and ASIC will update the ABR.
3 Sep 2018