TFN : Tax file number

A TFN is a unique number we issue.

Only one TFN is issued to you for your lifetime. Once you have been issued with a TFN, there is no need to apply for another even if your circumstances change – for example, if you:

* move interstate
* change jobs
* change your name in any way
* acquire investments, or
* claim government benefits.

Attention icon

You should advise us of any change to your name or address.