You require a TFN for banking and employment purposes. If you intend working in Australia you should have a student work visa before applying for a TFN. You should also have a TFN for banking purposes. When you open a bank account in Australia you will be asked for a TFN. If you do not advise the bank of your TFN, they are required to deduct a part of your interest.
The following information has been supplied by the Australian Taxation Office:
A tax file number (TFN) is a unique number issued to individuals and organisations to help the Tax Office administer tax and other Australian Government systems. It's one of your most important forms of identification in Australia . It's yours for life and keeping it secure is a good defence against identity theft.
While it is not compulsory to quote a TFN without one you may:
A TFN will also help you:
Your TFN is valuable. Don't share it with friends and don't provide it on the internet when applying for work. Keep it secure.
If you are a permanent migrant or temporary visitor to Australia you can apply for a TFN online after you arrive in Australia if you have a:
To apply complete the Online individual tax file number (TFN) registration. When applying online, you do not have to physically provide proof of your identity.
Applying for a TFN using false or other peoples' identity details, or misusing your TFN, can mean heavy fines or jail.
If you need more information about TFNs, you can: