Your filing status may be single, married filing jointly, married filing separately, head of household, or qualifying widow(er). Your filing status is based on whether or not you are married or not, and how you choose to file your return. You determine your marital status on the last day of your tax year, generally December 31. If your husband or wife died during the tax year, you determine your marital status at the time of your spouse's death, unless you remarry during the same year.

Your Citizenship

Were you a U.S. citizen or a resident alien for all of 2017?