Centralized Account Processing System (CAPS) Forms
Print, complete, sign, and send these forms to the CAPS Service Center for easy processing.
Centralized Account Processing System (CAPS) is an electronic alternative to presenting checks and cash for postage and fees at multiple post offices. Access the form you need for this convenient service.
 
PS Form 6001, CAPS Application Form
PS Form 6002, Local Account Information Form
PS Form 6003, Debit Authorization Form