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.A loan modification is a good option and I would encourage you to send in the application. In many ways a loan modification is similar to a refinance. Edit, sign, and share balloon note form online. No need to install software, just go to DocHub, and sign up instantly and for free. As you draw from your line, you can lock in up to three balances at a fixed rate, with a fixed monthly payment. A balloon payment, simply put, is a large payment that is due at the end of a loan term. It is different from a fully amortized loan, where a loan is paid. A balloon payment means that the term of loan has ended and the unpaid balance is then due in full.