Protecting Your Tax File Number from Identity Theft

Last update: Apr. 02, 2025

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Why Protecting Your TFN is Important

Identity theft involving your TFN can lead to serious consequences, including unauthorized tax claims, financial fraud, and damage to your credit history. Proper precautions ensure your personal data remains safe.

How to Protect Your TFN

Follow these important tips to protect your TFN:

• Limit TFN Sharing: Only share your TFN with trusted entities such as your employer, bank, and the ATO.
• Secure Storage: Keep your TFN documentation secure, either physically locked away or stored digitally using strong encryption.
• Beware of Scams: Never provide your TFN in response to unsolicited calls, emails, or texts. The ATO will never ask for sensitive details in these ways.
• Regularly Check Your Accounts: Monitor your financial and superannuation accounts regularly for unusual activity or unauthorized changes.

What to Do if Your TFN is Compromised

If you suspect your TFN has been compromised, immediately contact the Australian Taxation Office (ATO) and financial institutions to report and rectify the issue. Taking swift action can minimize potential damage.

Securely Register Your TFN Online

If you don't yet have a TFN or need a new one, apply securely using our protected online registration form. Our process prioritizes your privacy and security, keeping your information safe from threats.

Click here to securely register your TFN online today.

Frequently Asked Questions (FAQ)

Can someone steal my identity with my TFN?

Yes. If someone obtains your TFN, they could attempt to file false tax returns or access services in your name. That's why secure storage and cautious sharing are critical.

Is it safe to email my TFN?

No. You should never send your TFN via unsecured email. Only provide it through encrypted channels or official forms when required.

What signs indicate my TFN might be misused?

Unexpected contact from the ATO, incorrect tax return summaries, or unusual superannuation activity may suggest TFN misuse.

Can I change my TFN if it's stolen?

Your TFN is for life, but if compromised, the ATO can provide guidance or flag the number for monitoring. They rarely reissue a new one unless absolutely necessary.

Where can I apply for a TFN securely?

Right here: TFN registration form.