How do I find my tax file number?"

Written By Benjamin Salisbury

Your Tax File Number (TFN) is a unique identifier issued by the Australian Taxation Office (ATO). Here’s how you can find it:

1. Check Previous Documents

  • Tax returns: If you’ve lodged a return before, your TFN is on the notice of assessment.

  • ATO letters: Any official correspondence from the ATO usually includes your TFN.

  • myGov account: If your myGov is linked to the ATO, you can log in and view your TFN under your ATO profile.

2. Check with Your Employer

  • Your employer may have your TFN on file from when you filled out a Tax File Number Declaration form.

3. Superannuation Fund

  • Your super fund statements or online portal might list your TFN.

4. Contact the ATO

If you can't find it anywhere:

  • Call the ATO on 13 28 61 (within Australia).

  • They’ll ask you to verify your identity (e.g., name, date of birth, address, etc.).

Benjamin Salisbury
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