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.
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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.