Tax file number application or enquiry for an individual

This information explains how to apply for or enquire about a tax file number (TFN) for individuals.

What is a tax file number?

A tax file number (TFN) is a unique number we issue to individuals and organisations to help us administer tax and other Australian Government systems.

We only issue one TFN to you during your lifetime, even if you change your circumstances such as your name or residency. You should keep your TFN secure at all times and advise us if you change your name or address so we can update your details.

How do I apply

You need to obtain a copy of the Tax file number – application or enquiry for individuals (NAT 1432). To do this:

• visit online ordering
• phone 1300 720 092
• visit one of our shopfronts or selected newsagents, or
• ask for one from Centrelink or the Department of Veterans’ Affairs if you are applying for a government benefit or pension.

This form must be accompanied by original documents which prove your identity. As a result, you cannot apply for a TFN online at this time.

Your TFN will not be processed without the necessary documents. A full list of acceptable documents is provided in the instructions to the form.

A sample of the Tax file number – application or enquiry for individuals (NAT 1432, PDF 176KB) is available for your reference. Do not print and submit this form as it can not be processed. Refer above to order a form.

There are other ways of applying for a TFN, depending on whether you are a: permanent migrant or temporary visitor to Australia (you can apply online) non-resident of Australia for tax purposes - see Tax file number – application or enquiry for individuals living outside Australia (NAT 2628) secondary school student – see Secondary schools TFN program

More information If you have lost your TFN or are not sure you have one, check all your correspondence from us or contact your tax agent. If you still cannot find your TFN or would like to update your details, phone 13 28 61 between 8.00am and 6.00pm, Monday to Friday. If you phone us, we need to know we are talking to the correct person before discussing your tax affairs. We will ask you for details that only you, or your authorised representative, would know. Tax file number essentials Tax file number declaration (NAT 3092)

Last Modified: Monday, 21 July 2008