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  • Apply for a TFN

    A tax file number (TFN) is free and identifies you for tax and superannuation purposes. It's yours for life. You keep the same TFN even if you change your name, change jobs, move interstate or go overseas. If your details change, you need to let us know.

    How you apply for a TFN depends on your circumstances. Use the relevant application process for:

    If you are unsure of your residency status, see – Work out your tax residency.

    You should receive your TFN within 28 days after we receive your completed application and required documents. To prevent delays don't lodge another application. We appreciate your patience during the processing period. If you haven't received your TFN after 28 days, contact us.

    Keeping your details safe

    Make sure you protect your identity by keeping all your personal details secure, including your TFN. Someone only needs some basic details such as your name, date of birth, address, myGov details, or TFN to commit identity fraud.

    There are only a few people and places that can ask for your TFN, including:

    • the ATO
    • Centrelink – Services Australia
    • your bank
    • your employer after you start a job
    • your super fund
    • your registered tax agent.

    Keep your TFN private. You should not share it with anyone not listed above.

    See also:

    Last modified: 12 Aug 2020QC 22602