Well after just getting married this past July and it being tax time, I was just wondering how filing my taxes change. I usually do my own on quicktax so this past week I filled all my info in and my refund said right around what I thought it would, seeing I made about the same as last year. However I left out my wifes info. After putting in my wifes info .... It just asked for her SIN number and taxable income my refund dropped close to $3000 dollars. Can anyone explain why it dropped so much. Anyone else just get married and have the same situation. I would imagine I have to tell them that I got married.