Set loan terms with larger payments at the end. An unsecured promissory note with amortized payments is a promise to pay back a loan when there's no collateral, and it'll be repaid in equal installments.In this video I'm going to give you a really quick overview of what a promisory note is and how you can put one together really quickly. Safeguard your financial arrangement with a secured promissory note. Define the installment payment terms of the loan clearly for the borrower and lender. Quickly create your customized promissory note (IOU) when lending or borrowing money with a variety of payment methods. This lending document helps you to clarify the terms of a loan, define the payment schedule, and provide an amortization table, if the loan includes interest. Key documents include: Promissory Note: Details the loan terms, repayment schedule, and any balloon payment.