We are authorised by the Taxation Administration Act 1953 to ask for your tax file numbers (TFNs). We use the TFN and other information provided in the copies of tax documents request form to identify the person or relevant entity in our records. It is not an offence not to provide a TFN but if you don't your form may take longer to process.
Where authorised by law, we may give this information to other government departments and agencies, including:
- Services Australia
- Australian Bureau of Statistics
- Law Enforcement Agencies.
We also provide taxpayer information to treaty partners overseas under international tax agreements.
Our privacy policy contains important information about a person’s privacy, including information about how you can access and seek correction of information we hold about you, how to make a complaint if you think we have breached the Australian Privacy Principles and how we will deal with 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.