Lender shall provide Borrower with a final written statement of monies due prior to the due date of the balloon payment. Here's the information you'll need to have handy to complete your secured promissory note, installment with balloon final payment.Set loan terms with larger payments at the end. Use this unsecured promissory note (installment with balloon final payment) to make your loan official. Create and download a promissory note for free! A Promissory Note, or loan agreement, is used to record that one party promises to pay a sum of money to another party at a later date. It sets out the amount of required monthly payments, the note's term, and the amount of the balloon payment.