Balloon Payment Loan Calculator - With this balloon payment calculator you can get the monthly and balloon payment or just the balloon payment itself. Use the balloon payment calculator to estimate the monthly payment and the final lump sum of a given balloon loan construction.This calculator computes the payment amount necessary for a mortgage with a balloon payment, using monthly interest compounding and monthly payments. This amortization calculator returns monthly payment amounts as well as displays a schedule, graph, and pie chart breakdown of an amortized loan. A balloon loan is usually rather short, with a term of three to five years, but the payment is based on a term of up to 15 years. To use our amortization calculator, type in a dollar figure under "Loan amount. This tool figures a loan's monthly and balloon payments, based on the amount borrowed, the loan term and the annual interest rate.