Tax File Number

So the Australian Tax Office uses a simple algorithm to assign a valid tax file number (this is the number they use to cross reference your income payments and make it easier to enslave you).

So there is a site where you can actually generate any tax file number you want using the method provided. I'm not sure if this will work or not, but I'll give it a try anyway (better than them actually knowing what I'm earning).

http://bioinf.wehi.edu.au/folders/fred/tfn.html