Keeping your ABN information up to date
Find out what you need to do if your details change…
If your personal or business details change, you have 28 days to update your Australian Business Number (ABN) details.
What’s an ABN?
An ABN is a unique 11 digit number that identifies you as a registered business to the government and community.
Your ABN details can be used by your customers and other businesses to confirm they are dealing with the right business.
Your details are also used by Government agencies to:
- provide help in case of natural disasters
- let you know about new services, grants or changes to the law that impact your business
- make it easier for you to meet your licensing and registration requirements.
What ABN details can be updated?
If any of the following details have changed since you registered your ABN, you’ll need to update them:
- legal name
- postal address
- business location
- email address
- main business activity and industry code
- entity type
- contact information
- associate details.
You can update your ABN details through the Australian Business Register.
Selling, closing or changing your business
You should also keep in mind that if you sell, close or change your business, you might need to make changes to your ABN. For example:
- If your business has been sold or closes down, you should cancel your ABN.
- If you change your business structure (for example change from a sole trader to a company), in most cases you will need to cancel your ABN and apply for a new one.