Canadian taxes are due on April 30th. If you are student or only claim income from a T4 then you can file your taxes for free at QuickTax. Go to savingsheadquarters.com and check out QuickTax. The cost to file if you are not a student, but have straight forward taxes is only 14.99. If you have investment and real-estate income you will have to move up a level to QuickTax Platinum Online Edition which cost 29.99. You can try them all for free, and only pay when you actually print and file.
