First time borrowers must complete a Master Promissory Note (MPN) in order for the loan to be disbursed. 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. All payments shall first be applied to outstanding late fees, then to interest and the balance to the Principal amount. Deferral or balloon payment. 21. A portion of the proceeds of a bond issue which is set aside to pay interest on the same bond issue for a specific period of time.