How to Get a Tax File Number in Australia

Tax File Number


If you’re an Australian resident in need of a Tax File Number (TFN), the process is straightforward. In this guide, we’ll walk you through the steps to apply for a TFN online and secure this crucial identifier for taxation and superannuation purposes.

Am I Eligible for a TFN? All Australian residents can apply for a TFN online. However, if you reside outside Australia, or are a permanent migrant or temporary visitor, the Australian Taxation Office (ATO) website provides information tailored to your circumstances.

How to Apply

  1. Complete the online application form on the ATO website.
  2. Print the application summary and gather required identity documents.
  3. Visit a participating Post Office for an interview within 30 days, bringing your application summary and documents.
  4. Your TFN will be mailed within 28 days after the interview.

Important Tips

  • Bookings for Post Office appointments are optional but recommended.
  • Avoid lodging another application during the processing period.

More Information

For additional details on applying for and safeguarding your TFN, visit the ATO website’s dedicated pages:

  • Apply for a TFN online
  • Keep your TFN safe

Contact the ATO

Call 13 28 61 between 8 am and 6 pm (EST), Monday to Friday. For interview appointments, call 13 13 18 or use the online booking tool on the ATO website.

Find Your TFN

If you already have a TFN, access it online through myGov. Sign in, select the Australian Taxation Office, and find your TFN along with your personal details.


Securing your TFN is essential for various activities, from employment to obtaining government benefits. Follow the outlined steps to ensure a smooth application process and enjoy the benefits of having your Tax File Number.