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How to lodge your complaint with us

Before you contact us

Please have the following ready:

If you are lodging this complaint on behalf of another person, we will need to confirm that you are authorised by that other person to discuss their affairs. We have prepared a standard authorisation form which may be accessed through the Complaint Form. You don’t need to be a registered tax agent – provided you are authorised to assist.

How to contact us

  • This form must be completed in one sitting.
  • All fields which are marked with a red asterisk (*) are mandatory.
  • You should have on hand electronic copies of any relevant documents you may want to attach with your complaint.
  • If you are lodging this complaint on behalf of another person, we will need to confirm that you are authorised by that other person to discuss their affairs. We have prepared a standard authorisation form which may be accessed through the Complaint Form.
  • The form is located on a secured external website.

If you are experiencing difficulties using the online form, you may contact us with the alternative methods below.

Call us on 1300 44 88 29

(9am – 4pm, Monday to Friday, Australian Eastern Standard Time)

Note: calls are recorded for assurance and training purposes

Send mail to:

Inspector-General of Taxation & Taxation Ombudsman
GPO Box 551, Sydney NSW 2001

If you want to lodge a complaint in a language other than English, call the Translating and Interpreting Service (TIS) on 131 450 and ask them to call us on 1300 44 88 29 (9am – 4pm, Monday to Friday, Australian Eastern Standard Time)

We have information in languages other than English which may help you understand the services we provide.

If you are hearing, sight or speech impaired, please call the National Relay Service on 133 677 and ask them to call us on 1300 44 88 29 (9am – 4pm, Monday to Friday, Australian Eastern Standard Time)