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Tax file numbers (TFN)

Apply for a TFN
A tax file number (TFN) is free and identifies you for your tax and superannuation purposes. Find out how to apply for a TFN and keep your details safe.
Lodging tax file number (TFN) declaration data online
This fact sheet provides information to enable payers to submit TFN declaration data online.
TFN application for a deceased estate
Information for deceased estates about how to apply for a tax file number. (NAT 3236)
TFN application or enquiry for individuals - instructions
Instructions to help Australian residents for tax purposes, apply for a TFN using a paper form..
TFN declaration
The information you provide in this declaration will allow your payer to work out how much to withhold from payments made to you. (NAT 3092).