Set loan terms with larger payments at the end. Borrower promises to make a single, final payment for the entire balance owed to the Payee on or before.Here's the information you'll need to have handy to complete your secured promissory note, installment with balloon final payment. If interest is charged, the rate should be included with a repayment schedule. The proceeds of this Note shall be applied only to the purchase price (and related escrow and title charges) of the Property. A California promissory note template is a document designed to add security and structure to loan agreements between two parties. Installment Payments with a Final Balloon Payment : These are used mostly in mortgage loans.