How to find my TFN?

 Author: JayATO(Community Support)Community Support

1 June 2026

Hi @DaqibaoQi,

You can't provide your personal information on this public forum to request your TFN. This community is a public space, and you need to keep your TFN and personal details safe.

If you've looked everywhere and can't find your TFN, there are several places you can check:

• your myGov account – sign in and check the personal details section of your ATO online account
• the ATO app – your TFN is listed under 'My details'
• any letters from us, including your notice of assessment that we send after you do your tax return
• your income statement or payment summary from your employer
• your superannuation account statement
• your registered tax agent – they'll have it on file if you've used one before.

If you have a voiceprint enrolled with the ATO, you can call our self-help line to request your existing TFN. If you still can't find your TFN after checking these options, you'll need to get in touch with us directly, or lodge a tax file number application or enquiry.

Remember, your TFN is yours for life – you only get one. You must not share it publicly or let anyone else use it, including friends or family.

Check your ATO online account through myGov and check out our article on finding your TFN.

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