Use this unsecured promissory note (installment with balloon final payment) to make your loan official. Create and download a promissory note for free!Set loan terms with larger payments at the end. An unsecured promissory note with a balloon payment can be a great way to obtain financing for your business. The note doesn't require collateral. Lender shall provide Borrower with a final written statement of monies due prior to the due date of the balloon payment. How to fill out the Unsecured Promissory Note Template? 1. Enter the borrower's and lender's information. 2. The North Carolina Unsecured Promissory Note Template is a legal form that establishes the various terms of a loan agreement. A promissory note agreement is a written promise from a borrower to repay a specific sum of money to a lender.