Primary Application Forms for a US Passport 1. Application For A US Passport (DS-11) 2.Application form DS-11: This form should be filled out but not signed until you submit it at the post office. Get Your US Passport in 3 Days. Here are some tips from a Passport Acceptance Agent on how to fill out the DS-11 application, which is the basic passport form. Need to fill out your Passport application form online but don't know where to start? Complete application (Form DS -11) using black ink only. Can I pay for my passport application with cash? Step 1: Complete and print the DS-11 form . Do not sign the form.