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.Will the payments go toward both the interest and original loan amount? Yes, No, payments will go toward interest only. Easily create a legally binding contract with our free Promissory Note template. Clearly outline loan terms and protect both parties with expert guidance.