I think we have a web based application for simple tax returns now in Australia. I still download the free application from the tax office to do mine though because I have to put my business income in and share income and stuff. It's a bit crappy, but at least they finally have a Mac version as of about two years ago and it only takes about 45 minutes because it pulls most of your info in (bank interest, share income, salary, etc.) when you put in your tax file number (a bit like a social security number I think) and then you just add in anything missing and do the deductions.