• Contact the ABR

    You can save time by checking if the information you need is available on our website before contacting us.

    Phone 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

    • 1300 555 727 (Speak and Listen users)
    • 13 36 77 (TTY users)


    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

     Write to us

    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
    GPO Box 9977 Hobart, TAS, 7001

    When requesting an extract of your ABN.

    The Registrar
    Australian Business Register
    PO Box 9977Newcastle, NSW, 2300

    • Last modified: 28 Apr 2017QC 195