RE:RE:RE:RE:RE:Margin vs cash AccountSo if you're deemed a day trader and you made a few bucks working at Wendy's but lost a fortune on your side business day trading, the loss from day trading can off set your income from Wendy's and you would end up showing a loss and pay virtually no taxes that year. So it's not always beneficial to the CRA to deem someone a business. There has to be enough going on for them to do it. But if you are considered an "investor" and made money working at Wendy's but lost a fortune on your investing. The CRA can still take tax from you on your Wendy's money because capital gains can only be offset by capital losses and vise versa but doesn't have no baring on any other sources of income you earned when it comes to writing off loses.