You can save time by checking if the information you need is available on our website before contacting us.
You can contact us from 8.00am and 6.00pm (local time), Monday to Friday, except national public holidays.
If you contact us you may be asked for some details to prove your identity.
For enquiries about your Australian business number (ABN) registration, updating and cancelling your ABN, suppressing ABN details or requesting an ABN certificate or extract, contact:
Business information line
13 92 26
Service for people who have a hearing or speech impairment
Translating and interpreting service for people from non-English speaking backgrounds
13 14 50
If you are calling from overseas you can phone us and be directed to 13 92 26.
+ 61 2 6216 1111
For general correspondence.
The Registrar Australian Business Register PO Box 3373 PENRITH NSW 2740
When making a request to have your ABN details suppressed.
The Registrar Australian Business Register PO Box 9977 BOX HILL VIC 3128
When requesting an extract of your ABN.
The Registrar Australian Business Register PO Box 9977 NEWCASTLE NSW 2300