All prepayments shall first be applied to outstanding late fees, then to accrued interest and thereafter to the principal loan amount. 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. A balloon note is a type of loan where the borrower is required to make regular payments, called interestonly payments, for a specified period. Create a legally binding promissory note online. Customize terms easily with our document editor. It sets out the amount of required monthly payments, the note's term, and the amount of the balloon payment. Promissory Note Colorado: Get The Essential Requirements Right. Whenever you lend money to a friend, you expect to get the entire sum promptly.