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A tax file number (TFN) is a unique number the Australian Taxation Office (ATO) creates and gives to you. Generally, for you to use for taxation and superannuation purposes throughout your life. So, it’s a very important number.

When your TFN is linked with information that identifies you (such as your name and date of birth), this is called your TFN information.

You can apply for a TFN if you meet all the following three conditions:

  1. You are a foreign passport holder, permanent migrant, or temporary visitor.

  2. You are already in Australia.

  3. Your visa is one of the following

    • A permanent resident visa

    • A visa with work rights

    • An overseas student visa

    • A visa allowing you to stay in Australia indefinitely (including New Zealanders automatically granted a visa on arrival).


To apply online you must have a valid passport or relevant travel documents. If you don't have a valid visa, you can't apply for a TFN.

Follow this link to start your TFN application


An ABN is a unique 11 digit number that identifies your business to the government and community. You can use an ABN to:

  • Identify your business to others when ordering and invoicing

  • Avoid pay as you go (PAYG) tax on payments you get

  • Claim goods and services tax (GST) credits

  • Claim energy grants credits

  • Get an Australian domain name

Registering for an ABN through the Australian Government’s Business Registration Service is free.

Not everyone needs an ABN. To get one you need to be running a business or other enterprise.

Visit the Australian Business Register (ABR) website to find out about your entitlement to an ABN.

If you apply for an ABN and you’re not entitled to one, your application may be refused.


The reason for refusal will be explained to you by the Australian Taxation Office.

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