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Tax file numbers (TFN)

Apply for a TFN
Find out how to apply for a TFN either online or by paper depending on your circumstances and residency status. It is free to apply.
Lodging tax file number (TFN) declaration data online
Lodging your TFN declaration data online is a quick, secure way to meet your reporting obligations.
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
Complete a tax file number declaration so your payer can work out how much tax to withhold from their payments to you.