Set loan terms with larger payments at the end. Here's the information you'll need to have handy to complete your secured promissory note, installment with balloon final payment.USA mortgage lenders, prepare a Balloon Mortgage Promissory Note with this downloadable template. Document Type: Microsoft Word Last Updated: 20-September-2022 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. Create a secured note using the Pennsylvania Secured Promissory Note Template (download links on this page).