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.( dollars) each at uninterrupted monthly intervals on the day of each month, starting on the day of. Can be used for traditional installments or balloon payment. Use this unsecured promissory note (installment with balloon final payment) to make your loan official. Create and download a promissory note for free! Edit, sign, and share promissory note with balloon payment template online.