Here's the information you'll need to have handy to complete your unsecured promissory note, interest-only with balloon final payment. Here's the information you'll need to have handy to complete your secured promissory note, interest-only with balloon final payment.A Promissory Note with Balloon Payments is a loan contract that enables a lender set loan terms with one or more larger payments at the end. A monthly interest rate can be included on the promissory note. The payment will be applied on the interest due first and the principal after. All payments shall first be applied to outstanding late fees, then to interest and the balance to the Principal amount. (c) Borrower shall pay the full amount of all outstanding principal and interest in one balloon payment on October 12, 2026 (the "Maturity Date"). The loan is now spread out over 34 yrs.