Please include a per diem amount in the statement. Most forms may be filled out on your computer, printed and submitted for filing with the Department of State.The Vehicle Payoff Sample Letter form is a crucial document for individuals aiming to transfer their vehicle loan to the State Department Federal Credit Union. Payoff Request Form. Pay.gov is a free service that allows you to pay many, but not all, United States government agencies. Find the form you have been directed to use below. Pay.gov is a free service that allows you to pay many, but not all, United States government agencies. Find the form you have been directed to use below. Just click the Order link and fill out the online order form. Have back rent and need assistance?