How to fill out the RBFCU Payoff Authorization Letter Form? 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.Searching for a fillable Mortgage Loan Payoff Letter Template? Use our easy editor for PDF files and fill this form out quickly. Apply for auto financing for a new or used car with Chase. Use the payment calculator to estimate monthly payments. Your account number is at the top of your monthly statement and on the payment coupon at the bottom of the statement. Online. When you take out an auto loan, your lender will be listed as a lienholder on the title.