PDF 2015 Form 1040A - IRS IRS Use Only—Do not write or staple in this space. Your first name and initial . Last name . OMB No. 1545-0074Your social security number . If a joint return, spouse's first name and initial . Last name . Spouse's social security number Make sure the SSN(s) above and on line 6c are correct. Home address (number and street).