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How do I find my Tax File Number? (TFN)

If you don't know your Tax File Number (TFN), you might be able to find it by:

  • Looking at your income tax notice of assessment or other letters from the ATO
  • Looking at a payment summary (provided by your employer)
  • If you have a myGov account linked to the ATO Online Services, you can access your TFN online

If you still can't find it, you can contact the ATO on 13 28 65.