Why Married Couples Sometimes Pay More Than They Would If They Were Single With the Same Income

If you got married last year and your filing status is married for the first time, you may think you've made a mistake on your income tax return when you see that your taxes are higher than they would have been if you were single with the same income. What gives?

Welcome to the marriage tax penalty. It's not as bad as it used to be, but here's how it still affects married couples.