Each Canadian files a separate tax return regardless of marital status. However, you have to have certain basic information about your spouse on your return, such as name, SIN and their Net Income. We recommend you produce your tax returns together with a program like UFile in order to maximize any credit transfers allowed under the tax code (donations, pension income,medical expenses etc…). By doing this, you optimize the combined result of your tax return. Who doesn’t want more money in their pockets?