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.What will be the principal amortization schedule? Set loan terms with larger payments at the end. All you need to know about promissory notes. Use our builder or a free customizable template for home, car, or business Loan. 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 can be structured as: (1) Installment Note; (2) Interest Only Note; or (3) Straight Note. A straight note is a written document that outlines the terms of a loan agreement between a borrower and a lender.