When such unpaid amounts have been paid in full, the Interest Rate shall thereafter return to the amount set forth in the first paragraph of this Note. Here's the information you'll need to have handy to complete your unsecured promissory note, interest-only with balloon final payment.Set loan terms with larger payments at the end. Here's the information you'll need to have handy to complete your secured promissory note, interest-only with balloon final payment. New loan must have a lower Fixed Interest Rate; no adjustable rate or balloon payments. 4. Loan fees must be reasonable. 5. A single final balloon payment for the entire outstanding Principal amount and interest accrued will be paid on or before the day of.