http://www.studiotax.com/en/main.htm

Download the StudioTax Canadian Personal Income Tax software from the above link.

Fantastic piece of software. The input forms mimic the actual paper documents, line numbers are the same, easy to follow directions, in general, a really useful piece of software. Approved for electronic submission to speed the process. No paper to mail in. (Although you should save the receipts and stuff for 7 years)

Allows for all the Standard forms, like for reporting self-employed Income, etcetara. It doesn't work for all returns, but I imagine that if you can not use this package for your return, you need an accountant anyways...