Balloon Payment Loan Calculator - With this balloon payment calculator you can get the monthly and balloon payment or just the balloon payment itself. Choose balloon to have a loan with a balloon payment where the term of the loan will be shorter than the amortization term.This tool figures a loan's monthly and balloon payments, based on the amount borrowed, the loan term and the annual interest rate. Use the balloon payment calculator to estimate the monthly payment and the final lump sum of a given balloon loan construction. This calculator can create a loan amortization schedule given only three of four necessary variables.