Promissory Note
A promissory note is the simplest debt instrument there is: one party promises to pay another a definite sum, on stated terms. Its brevity is the point — and also the reason so many are written badly, missing the terms that decide what happens when payment does not arrive.
Simple is not the same as vague
A note that says "I promise to pay $10,000" is simple. It is also silent on when, on whether interest accrues, on what happens if a payment is late, and on whether the holder may demand the whole balance. Each of those silences is resolved later by negotiation or by a court, neither of which the lender controls. Adding four clauses keeps the document short and makes it work.
What the template covers
A definite sum and a definite time
The amount and either a maturity date or a payment schedule. Definiteness is not only good practice — it is part of what makes a note negotiable under the UCC.
Interest, stated properly
The rate, the basis, and whether it accrues before or after default. State usury limits apply, and they vary widely.
Default and acceleration
What counts as default, any cure period, and whether the entire unpaid balance becomes due. Without acceleration a lender must chase each missed instalment separately.
Secured or unsecured, said plainly
If collateral backs the note, it needs identifying and usually a separate security agreement. If nothing does, the note should say so rather than leave it open.
Negotiability, usury and the signature question
Article 3 of the Uniform Commercial Code governs negotiable instruments, and a promissory note qualifies where it is an unconditional promise to pay a fixed amount of money, payable on demand or at a definite time, and meets the other requirements of UCC § 3-104. Negotiability matters because a holder in due course takes the instrument free of most defences. Interest is limited by state usury statutes, which differ substantially and in some states carry severe consequences for exceeding them. On signature: the ESIGN Act excludes most of the UCC at 15 U.S.C. § 7003(a)(3), so a note intended to be a negotiable instrument should be executed according to state law rather than assumed to be covered — many states have addressed electronic notes through UETA's transferable records provisions, but the requirements are specific.
No acceleration clause, twenty-four instalments
A seller financed part of a small equipment sale with a note payable monthly over two years. The buyer paid four instalments and stopped. The note had no acceleration clause, so the balance did not become due — only each instalment as it came. Legally the seller had to wait for each one to fall due before pursuing it, or negotiate. He negotiated, from a much weaker position than a single sentence in the note would have given him.
Questions people ask about this
What is the difference between a promissory note and an IOU?
An IOU acknowledges a debt. A promissory note contains a promise to pay on specified terms, and where it meets UCC § 3-104 it may also be negotiable, which an IOU is not.
Does a promissory note need a witness or notary?
Generally not for validity between the parties. Notarization is sometimes used for evidentiary strength, and is commonly required where the note is secured by real property and the security instrument is recorded.
Can a promissory note be signed electronically?
With care. The ESIGN Act excludes most UCC transactions, so where the note is intended to be a negotiable instrument, the applicable state provisions on transferable records govern. For a straightforward non-negotiable loan, an electronic signature is ordinarily fine.
What interest rate is allowed?
Set by state usury law, and different for commercial and consumer loans. Exceeding the ceiling can void the interest and in some states expose the lender to penalties.