If you're married, you can choose to file jointly with your spouse or separately. If either you or your spouse earns all of the money, you should probably file a joint return. But if both of you generate income, it's a good idea to calculate the taxes both ways and see whether there's any difference in the bottom line. For example, if one spouse has had substantial medical expenses, the medical deduction may be higher with a single return. Keep in mind that married people who want to claim the childcare credit must file jointly. And if you or your spouse receives income from Social Security, you're usually better off filing jointly. These tips are provided to give you general information about your taxes. If you have specific questions, please consult a tax advisor or call the toll-free number for Federal Tax Information and Assistance at 1-800-829-1040.