This specification is to be used in the development of software for the supply of Tax File Number declaration data to the Australian Taxation Office (ATO) on magnetic media. It is to be used for reports lodged after 1 July 2000. From 1st July 2005, Tax File Number declaration data may also be supplied via the Electronic Commerce Interface (ECI).
Acceptable versions of the TFN declaration reporting specifications from 1 October 2017
Your users will still be able to use TFN declaration reporting specification versions 2.2, 2.3.0, 2.3.1 and 2.3.2 after 30 September 2017 provided that their payee who is completing a TFN declaration is not a working holiday maker (WHM).
If your user employs a WHM they will need to use version 3.0.0. Alternatively, they can use a 2017 TFN declaration (NAT 3092) paper form which is available on ato.gov.au.