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Get or find your tax file number

If you already have a TFN for tax and superannuation, you can find it online through myGov.

Your tax file number (TFN) is a personal reference number you use for tax and superannuation.

Find your TFN

You only have to apply for a TFN once. If you’ve ever applied for a TFN, you already have one.

If you’ve linked your ATO online services to myGov, sign in now to find your TFN.

Select Australian Taxation Office. Your TFN is shown with your personal details.

If you don’t have a myGov account, find out how to create one and link the ATO to your account.

Learn about other ways to find your TFN on the ATO website.

Apply for a TFN

You should get a TFN if you want to do any of these things:

  • get a job
  • apply for government benefits
  • get an Australian business number (ABN).

It’s free to apply.

There are different ways to apply for a TFN depending on your circumstances. Find out more about how to apply for a TFN on the Australian Taxation Office (ATO) website.

Get help in more languages

Find information in other languages on the ATO website to help with tax and superannuation.

Call the Translating and Interpreting Service on 131 450, and they will connect you to the ATO.
Page last updated: 24 January 2025