You can save time by checking if the information you need is available on our website before contacting us.
You can contact us from 8am – 6pm (AEST), Monday to Friday, except national public holidays.
If you contact us, you may be asked for some details to prove your identity.
Business information line
13 92 26
Service for people who have a hearing or speech impairment
Call us using the National Relay Service (NRS) call numbers. There are two easy steps:
Translating and interpreting service for people from non-English speaking backgrounds
13 14 50
Phoning from overseas
+ 61 2 6216 1111
Self-managed superannuation fund updates
13 10 20
For general correspondence, write to us at:
The RegistrarAustralian Business RegisterPO Box 3373PENRITH NSW 2740
For requests to have your ABN details suppressed, write to us at:
The RegistrarAustralian Business RegisterPO Box 9977BOX HILL VIC 3128
To obtain an extract of your ABN details or to obtain a certified copy of someone else's public ABN details, write to us at:
The RegistrarAustralian Business RegisterPO Box 9977NEWCASTLE NSW 2300