A Promissory Note with Balloon Payments is a loan contract that enables a lender set loan terms with one or more larger payments at the end. A balloon payment is a large payment due at the end of a mortgage.If you have a partially amortizing loan, you no doubt have a balloon payment awaiting you at maturity. A balloon payment is a large one-time amount due at the end of a loan. Mortgages, auto loans, and business loans have been structured for balloon payments. Clients interested in lending money to financially assist a family member should consider making an intrafamily loan. Here, we outline basic information. Balloon payments compensate for monthly payments and interest during the repayment period that are too low to repay the loan entirely.