A promissory note is a signed written document in which one person, called the maker, promises to pay a specific sum of money to another person, the payee, either on demand or by a stated deadline. When it meets certain formal requirements under Article 3 of the Uniform Commercial Code, it becomes a negotiable instrument, which gives the holder stronger enforcement rights and the ability to transfer the note to third parties much like a check.1Legal Information Institute. Uniform Commercial Code 3-104 – Negotiable Instrument Only the maker is bound by the note itself; the payee makes no promises inside the document.
What Makes a Promissory Note Valid
UCC Section 3-104 sets out what the document must contain to qualify as a negotiable instrument. A note missing one of these elements can still function as an ordinary contract, but it loses the special protections and transferability that negotiable status provides.1Legal Information Institute. Uniform Commercial Code 3-104 – Negotiable Instrument
- An unconditional promise to pay. Language like “I promise to pay if my business succeeds” introduces a condition that disqualifies the note.
- A fixed amount of money. Interest and other charges can be added, but interest itself isn’t required.
- Payable on demand or at a definite time. The note either states a maturity date and schedule, or is payable whenever the holder asks.
- Payable to order or to bearer. “Pay to the order of [Name]” allows endorsement to someone else; “pay to bearer” lets whoever holds the note collect. A note that simply says “Pay [Name]” still works as a contract but isn’t a negotiable instrument.
- No additional instructions beyond payment. Provisions about collateral are fine; requiring the maker to deliver goods or perform services is not.
- Signed by the maker. Handwritten, typed, and electronic signatures all count.
Contract basics apply on top of these formal requirements. The transaction needs consideration, which in most cases is the loan itself; a note where no money actually changed hands is generally unenforceable. Both parties must have legal capacity, since a minor or a person without mental capacity may be able to void the note. And the signed note must be delivered to the payee, either physically or electronically. A signed note sitting in the maker’s drawer creates no obligation.
Notarization isn’t required in every situation, but it adds an authentication layer that can head off later disputes about whether the signature is genuine. Notary fees for acknowledging a signature are usually modest, running from a few dollars up to around $25 depending on the jurisdiction. Beyond the UCC essentials, most notes also spell out the full names of the parties, the date of issuance, the interest rate, and the payment schedule. None of those are technically required for negotiability, but leaving them out invites arguments that two extra lines could have prevented.
Promissory Note vs. Loan Agreement
A promissory note is a one-sided promise: the maker commits to repay, and that’s the whole document. A loan agreement is a two-sided contract in which the lender commits to advancing funds, the borrower commits to repaying, and both agree to various covenants. Notes tend to be shorter and simpler, which is why they show up in personal loans between friends or family, seller-financed real estate deals, and straightforward business lending.
The two often work together. In a mortgage transaction, the borrower typically signs a promissory note that creates the payment obligation and a separate mortgage or deed of trust that spells out the lender’s security interest in the property. The note is the promise to pay; the security instrument is the rulebook for the collateral.
Common Types of Promissory Notes
Secured and Unsecured
A secured promissory note is backed by collateral, such as real estate, a vehicle, or equipment. The lender’s claim on that collateral is usually documented separately and made enforceable against other creditors by filing a financing statement under UCC Article 9 with the appropriate secretary of state’s office. An unsecured note has nothing behind it beyond the borrower’s word and creditworthiness, which is why unsecured notes almost always carry higher interest rates.
Demand and Installment Notes
A demand note has no fixed maturity date. The lender can call for full payment at any time, which offers flexibility but leaves both sides less certain about timing. Demand notes are common in informal lending between people who know each other well. An installment note requires regular payments of principal and interest on a set schedule, like a fixed monthly amount over five years. That’s the structure most people recognize from auto loans and mortgages.
Balloon Payment Notes
Some notes combine relatively low periodic payments with a large lump sum at the end. That final payment, the balloon, is typically much larger than any individual installment and often represents most of the original principal. Balloon structures appear frequently in commercial real estate and short-term business financing, where the borrower expects to refinance or sell before the balloon comes due. For residential mortgages, federal regulations generally prohibit balloon payments in loans that qualify as Qualified Mortgages, with limited exceptions.2Consumer Financial Protection Bureau. What Is a Balloon Payment? When Is One Allowed?
Interest Rate Limits
The parties to a promissory note cannot simply agree to any interest rate they like. Usury laws cap the maximum allowable rate in nearly every state, though the specific ceilings vary widely by loan type, amount, and whether the lender is a licensed institution or a private individual. Lending above the applicable limit can trigger severe penalties, including forfeiture of all interest, voiding of the note, or criminal liability, depending on the state.
No single federal cap covers all consumer lending, but two federal limits stand out. The Military Lending Act sets a 36% annual percentage rate ceiling on loans to active-duty servicemembers and their dependents, and that rate must include all fees and charges rolled into the calculation.3Office of the Law Revision Counsel. 10 USC 987 – Terms of Consumer Credit Extended to Members and Dependents Federal credit unions face a separate ceiling set by the National Credit Union Administration, currently 18% for most loans with a 28% allowance for payday alternative loans.4National Credit Union Administration. Permissible Loan Interest Rate Ceiling Extended If you’re lending privately, check your state’s usury ceiling before setting the rate.
Transferring the Note and Holder in Due Course
One of the more valuable features of a properly drafted promissory note is that it can change hands. The original payee can sell or transfer the note to a third party — a bank, investor, or debt buyer — by endorsing it, essentially the same way you’d endorse a check. This transferability is what makes promissory notes function as financial instruments rather than plain IOUs. Mortgage lenders routinely sell the notes they originate into secondary markets, freeing up capital to make new loans.
The person who acquires a note through proper channels can gain a special legal status called “holder in due course” under UCC Section 3-302. To qualify, the holder must have taken the note for value, in good faith, and without knowledge that it is overdue, has been altered, carries an unauthorized signature, or is subject to any competing claim or defense.5Legal Information Institute. Uniform Commercial Code 3-302 – Holder in Due Course
That status matters. A holder in due course is shielded from most defenses the maker might raise against the original payee. If you borrowed money from someone who defrauded you in the underlying deal, you’d have a solid defense against paying that person. If they’ve already sold your note to an innocent third party who qualifies as a holder in due course, most of those defenses vanish. The third party collects regardless.
A narrow set of “real defenses” survives even a transfer, under UCC Section 3-305:6Legal Information Institute. Uniform Commercial Code 3-305 – Defenses and Claims in Recoupment
- Infancy, to the extent that being underage voids contracts under the relevant state’s law.
- Duress, incapacity, or illegality of the transaction.
- Fraud in the factum, meaning the maker was tricked into signing without knowing the document was a promissory note or understanding its essential terms. Ordinary fraud in the underlying deal doesn’t count.
- Discharge in bankruptcy.
Every other defense, including breach of contract by the original payee, failure of consideration, and ordinary fraud in the underlying transaction, can be raised against the original payee but not against a holder in due course.
How Long the Note Stays Enforceable
A promissory note does not stay enforceable forever. UCC Section 3-118 sets default time limits for bringing a collection lawsuit, and most states have adopted some version of these rules.7Legal Information Institute. Uniform Commercial Code 3-118 – Statute of Limitations
For notes with a stated due date, the lender has six years from that date to file suit. If the note has an acceleration clause and the lender triggers it, the six-year clock starts from the accelerated due date rather than the original maturity.7Legal Information Institute. Uniform Commercial Code 3-118 – Statute of Limitations
Demand notes work differently. If the lender actually demands payment, the six-year period runs from the date of that demand. If no demand is ever made and no payments of principal or interest come in for a continuous ten-year stretch, the right to enforce the note expires entirely. Some states have modified these timeframes, so checking local law is worthwhile before assuming the standard six-year window applies, especially if you’re sitting on an old note.
What Happens When the Borrower Defaults
When a borrower stops paying, the lender’s options depend largely on what the note itself says.
Most well-drafted installment notes include an acceleration clause, which gives the lender the right to demand the entire remaining balance immediately on default. Without this clause, the lender could only sue for each missed payment individually as it came due. Acceleration is rarely automatic; the lender must choose to invoke it, and if the borrower catches up on missed payments before the lender acts, the right to accelerate may be lost. Once properly invoked, the borrower owes the full unpaid principal plus interest accrued to that point, but not future interest that would have accumulated over the remaining life of the loan.
A properly executed promissory note is powerful evidence in court. Unlike a verbal agreement, where the lender must prove the loan existed and establish its terms through testimony and circumstantial evidence, a signed note largely speaks for itself. The maker carries the burden of raising a valid defense. Many notes also require the borrower to pay the lender’s attorney fees and collection costs if litigation becomes necessary. Courts generally enforce these provisions, though some will reduce fees they consider excessive.
If the note is secured, the lender can also pursue the collateral. For real estate, that means foreclosure. For personal property like equipment or vehicles, the lender can repossess and sell the asset under Article 9’s rules for secured transactions. Unsecured lenders have no collateral to seize, which is why they often need to pursue wage garnishment or bank levies after obtaining a court judgment.
Tax Treatment for the Lender
Interest on a promissory note creates tax obligations on both sides. The lender must report interest received as income, and the borrower may be able to deduct interest paid depending on the loan’s purpose.
Any lender, including a private individual, who receives $10 or more in interest during a calendar year must report that amount to the IRS on Form 1099-INT and provide a copy to the borrower. Interest under that threshold is still taxable; the $10 figure just triggers the paperwork. If the lender withheld any federal income tax under backup withholding rules, the form must be filed regardless of the amount.8Internal Revenue Service. Instructions for Forms 1099-INT and 1099-OID
Lending money to a friend or family member at zero interest, or at a rate the IRS considers too low, doesn’t sidestep taxes. Under IRC Section 7872, the IRS treats the gap between the actual interest charged and the Applicable Federal Rate as a taxable event. The lender is deemed to have received the missing interest and owes tax on it, and that phantom interest is simultaneously treated as a gift from the lender to the borrower.9Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates The Applicable Federal Rate changes monthly and varies by loan duration.10Internal Revenue Service. Revenue Ruling 2026-2 – Applicable Federal Rates
Two exceptions keep small family loans out of these rules. Gift loans of $10,000 or less are completely exempt, as long as the borrower doesn’t use the money to buy income-producing assets. For gift loans between individuals where the total outstanding balance stays at or below $100,000, the imputed interest is capped at the borrower’s actual net investment income for the year. If that income is $1,000 or less, it’s treated as zero, meaning no imputed interest at all.9Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates
Electronic Promissory Notes
Paper isn’t required. The federal Electronic Signatures in Global and National Commerce Act establishes that electronic records and signatures carry the same legal weight as their paper counterparts; a contract or signature cannot be denied enforceability solely because it exists in electronic form. A promissory note created, signed, and stored electronically is valid and enforceable. For consumer transactions, ESIGN adds a consent requirement: the borrower must affirmatively agree to receive records electronically, be told about the right to request paper copies, and be informed of any fees for those copies before consenting.11Office of the Law Revision Counsel. 15 US Code 7001 – General Rule of Validity