Updating Your Details with the ATO: TFN Considerations

Last update: Apr. 8, 2025

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Why Update Your TFN Details?

Accurate TFN records ensure seamless communication with the ATO, prevent identity issues, and help maintain your tax and financial affairs efficiently.

When Should You Update Your TFN Details?

It's essential to update your details if you experience significant changes, including:

• Change of address
• Change of name (due to marriage, divorce, or deed poll)
• Changes to contact details (phone number, email)
• Changes in residency status

How to Update Your TFN Details with the ATO

You can update your TFN information quickly and securely via:

• myGov Portal: The easiest way to update your details is through the myGov website linked to your ATO account.
• Direct ATO Contact: You may call or submit a paper form directly to the ATO if online methods aren't accessible.

Ensuring Your TFN Security While Updating

Always update your details through secure channels. Never provide personal details or your TFN via unsecured websites or unsolicited communications to prevent identity theft and fraud.

Need a New TFN?

If your TFN details require significant changes or if you need a new TFN, you can easily and securely register through our simplified online TFN application form.

Click here to securely register or update your TFN online today.

Frequently Asked Questions (FAQ)

How do I know if my TFN details need updating?

If you've changed your name, address, contact details, or residency status since your original application, you should update your TFN records with the ATO.

Can I update my TFN details through myGov?

Yes. The myGov portal is the fastest and most secure method to update your TFN-linked information.

What if I don't update my TFN details?

Failure to update your TFN information could delay refunds, cause errors in tax reporting, or prevent access to government services.

Do I need to apply for a new TFN if my name changes?

No. Your TFN remains the same for life. However, you must notify the ATO of any name change so records remain accurate.

Where can I register or update my TFN?

You can start securely here: TFN registration and update form.