We're authorised by the Taxation Administration Act 1953 to ask for your tax file number (TFN). We will use your TFN to identify you in our records. It isn't an offence not to provide your TFN but if you don't your form may take longer to process.
We need this information to help us administer tax law. If the information isn't collected, there could be a delay processing your form.
Where authorised by law, we may give this information to other government departments and agencies, including:
- Department of Education
- Department of Employment
- Services Australia
- Department of Social Services
- Department of Veterans' Affairs
- State and Federal Police
- Australian Bureau of Statistics
- Reserve Bank of Australia.
We also provide taxpayer information to treaty partners overseas under international tax agreements.
Our privacy policy contains important information about your privacy, including how:
- you can access and seek correction of information we hold about you
- to make a complaint if you think we have breached the Australian Privacy Principles
- we will deal with any privacy complaints.
If you have a privacy concern or need more information, phone or write to our privacy hotline.
To report an instance where you suspect your privacy has been compromised, see Data breach guidance for individuals.