Balloon Payment Loan Calculator - With this balloon payment calculator you can get the monthly and balloon payment or just the balloon payment itself. • CMA = Contract or Mortgage Amount at Purchase.Use the balloon payment calculator to estimate the monthly payment and the final lump sum of a given balloon loan construction. 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. A balloon loan can be an excellent option for many borrowers. Use this calculator to see how a balloon loan might work for you. Balloon loan payment calculator modern simple. This calculator can create a loan amortization schedule given only three of four necessary variables.