Here's the information you'll need to have handy to complete your unsecured promissory note, interest-only with balloon final payment. Here's the information you'll need to have handy to complete your secured promissory note, interest-only with balloon final payment.THIS IS A BALLOON MORTGAGE SECURING A VARIABLE (adjustable; renegotiable) RATE OBLIGATION. A single final balloon payment for the entire outstanding Principal amount and interest accrued will be paid on or before the day of. Deferral or balloon payment. 21. Set loan terms with larger payments at the end. O The offered certificates will represent beneficial ownership interests in the trust fund only. O Interest will be payable monthly, commencing in October 2000.