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International tax for individuals
In this section:
A tax file number, commonly known as a TFN, is your personal reference number in our tax and superannuation systems. Before starting work, we recommend you get one. A TFN is also useful if you intend to keep money in a bank account, because you may be required to pay tax on the interest.
Getting a TFN is not compulsory, but if you don't have one you may:
A TFN will help you:
Find out more
Tax file numbers
If your visa allows you to work in Australia, you can apply for a TFN online. We will send your TFN to the address you provide.
Get it done
Apply online for a tax file number - Permanent migrants or temporary visitors to Australia
Your TFN is a key part of your identity while you are in Australia. It must only be used by you. It is like a password or personal identification number. You must not:
You should not provide your TFN over the internet or give it to anyone who should not ask for it. Only certain people and organisations can ask for your TFN, including:
If you think someone else has used your TFN or it has been stolen, phone us on 1800 467 033 (within Australia), between 8.00am and 6.00pm, Monday to Friday.
Identity theft and your tax file number
When you start work, your employer will ask you to complete a Tax file number declaration. If you do not give your TFN to your employer using this form within 28 days of starting your new job, they must deduct a higher rate of tax from your pay. Your employer will also need your TFN so they can give it to your super fund.
Remember, you should only give your TFN to your employer after you start work for them. Never give your TFN when you fill out a job application or when you apply for a job over the internet or phone.
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