Set loan terms with larger payments at the end. These calculator templates can help you with your mortgage, loans, budgeting, and more.Such table should also clearly indicate any balloon payments as well, with any required Civil Code language if it is related to a residential loan. An unsecured promissory note with amortized payments is a promise to pay back a loan when there's no collateral, and it'll be repaid in equal installments. This tool figures a loan's monthly and balloon payments, based on the amount borrowed, the loan term and the annual interest rate. Balloon Payment Loan Calculator - With this balloon payment calculator you can get the monthly and balloon payment or just the balloon payment itself.