Set loan terms with larger payments at the end. If interest is charged, the rate should be included with a repayment schedule.Here's the information you'll need to have handy to complete your secured promissory note, installment with balloon final payment. Promissory Note with Balloon Payments - Read online for free. This document is used to loan or borrow money. Our collection of printable promissory note templates makes it easy to draft and customize agreements for all your financial needs. A balloon payment is a lump sum that's due at the end of the loan term. It is good because it will: Lower your loan repayments.