Here's the information you'll need to have handy to complete your secured promissory note, installment with balloon final payment. A balloon payment is a lump sum payment that is significantly larger than the monthly payments and paid at the end of a loan's term.Purchase A Domain Name or See Numbers 3, 4, and 5 Below 3. The form below will get an e-mail sent directly to our staff to help you learn more about our different balloon tour options.