Originally Posted by jjmerago

Wrong!

That would mean tourists would be exempt from all taxes as they are not canadian customers.

Fact is as soon as you step into canada you pay taxes. Here in BC its now 1 sales tax HST so even if you try and scam your way out of income tax you will still have to pay 12% on everything you buy.
As for your question ... yes you have to pay income tax even if your not a canadian citizen. If your staying up here and work from home its up to you to file taxes as a non-resident. Even if all your business is based outside the country you still have to declare.

But then again if ya just don't feel like paying I direct you again to our unavoidable sales tax which you cannot escape. On the bright side though if you get hit by a car ... its free.

Think of all those trips to McDaonalds and 7-11 as a down payment on a trip to a free doctor, free clinic or emergency room visit.