Are you a Resident Alien? Resident Aliens file Form 1040, 1040A, or 1040EZ like U.S. Citizens. Are you a Nonresident Alien? Nonresident Aliens file Form 1040NR or 1040NR-EZ. Are you a Dual Status Alien? Taxpayers who were Nonresident Aliens at the beginning of the tax year and Resident Aliens at the end of the tax year should file Form 1040 labeled Dual Status Return with Form 1040NR attached as a schedule and labeled Dual Status Statement.