Author: JayATO(Community Support)Community Support 4 Feb 2026
Hi @cecilianovita
You're legally required to update your ABN details within 28 days of becoming aware of any changes, including your business address. This requirement applies regardless of whether you can create a Digital ID.
If you don't have enough documents to complete a Digital ID (such as myID), you can still update your ABN details by completing a Change of registration details form and submitting it to us. This is an alternative method to update your information when you can't access the online services through the Australian Business Register.
Keeping your ABN details current is important because it ensures government agencies have accurate contact information for your business, and the right people have the correct permissions to act on your behalf. It also means you're ready for new government services when they become available.
You can download the Change of registration details form from the Australian Business Register website. Complete it with your updated address and any other changed business details, then submit it to us as per the instructions on the form.