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.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. This financial planning calculator will figure a loan's regular monthly, biweekly or weekly payment and total interest paid over the duration of the loan. This tool figures a loan's monthly and balloon payments, based on the amount borrowed, the loan term and the annual interest rate. Quickly create your customized promissory note (IOU) when lending or borrowing money with a variety of payment methods. Our calculator can determine your total payment and interest rate based on the principal and equity owed on the loan.