An unsecured promissory note is a written promise to repay a loan that has no collateral behind it. If the borrower stops paying, the lender cannot seize a car, a house, or any specific asset. The only path to the money is a lawsuit, and even a court judgment can be wiped out if the borrower files bankruptcy. That single fact shapes everything else about how these notes are priced, drafted, and enforced.
How It Differs From a Secured Note
A secured promissory note ties the debt to a specific asset. Miss enough payments on a car loan and the lender takes the car. An unsecured note strips that safety net away entirely. The lender’s only remedy is to sue, win a judgment, and then chase the borrower’s assets through the court system.
That difference drives the economics. Lenders who accept unsecured notes look harder at credit history, income, and existing debts, and they compensate for the added risk with higher rates. A borrower who could get a secured loan at 6% might see 10% or more on an unsecured note for the same amount. The tradeoff for the borrower is speed: no appraisal, no lien filing, no collateral inspection. The paperwork can be drafted, signed, and funded in a single meeting.
The gap widens further in bankruptcy. Secured creditors get paid first out of the collateral they hold a claim on. Unsecured creditors stand in line with credit card companies, medical providers, and everyone else, competing for whatever is left. That lack of priority is the single biggest risk of holding an unsecured note.
What the Note Must Contain
A promissory note is only as enforceable as the language inside it. Missing a key term can make the entire note unenforceable in court. At minimum, every unsecured promissory note should include:
- The principal amount, stated as an exact dollar figure.
- The interest rate, whether it is fixed or variable, and how interest is calculated.
- The repayment schedule: monthly installments, quarterly payments, or a lump sum at the end.
- The maturity date by which all principal and interest must be paid in full.
- Full legal names and addresses of both the lender and borrower.
- Default provisions: what counts as a default, whether there is a cure period, and whether the full balance accelerates after a missed payment.
- Prepayment terms, including any penalty for paying early.
- Governing law: which state’s laws control disputes.
Both parties must sign. An unsigned note is a description of a hypothetical loan, not a contract.
Notarization
No federal law requires a promissory note to be notarized, but for the lender it is one of the smartest steps available. Under the Federal Rules of Evidence, a document with a notary’s certificate of acknowledgment is “self-authenticating” and can be admitted into court without calling a witness to prove the signatures are genuine. Without notarization, proving up the signatures may require tracking down a witness or hiring a handwriting expert, which adds cost and delay to any collection lawsuit.
Negotiability
A promissory note that meets the requirements of the Uniform Commercial Code qualifies as a negotiable instrument, which means it can be transferred to a new holder with strong collection rights. Under UCC Section 3-104, the note must contain an unconditional promise to pay a fixed amount of money, be payable on demand or at a definite time, and be payable “to order” or “to bearer.”1Legal Information Institute. Uniform Commercial Code 3-104 – Negotiable Instrument Extra conditions beyond paying money strip the note of that status. A “holder in due course” who buys a negotiable note in good faith can enforce it even against some defenses the borrower could raise against the original lender.
Interest Rate Rules for Private Lenders
When a bank writes a loan, the market sets the rate. Private lenders face two additional layers of rules: minimum rates set by the IRS, and maximum rates set by state usury statutes. Miss either boundary and the note can create tax problems or become uncollectible.
The IRS Minimum: Applicable Federal Rates
The IRS publishes Applicable Federal Rates every month, broken out by loan duration. For April 2026, the annual AFRs are 3.59% for short-term loans of three years or less, 3.82% for mid-term loans over three years but not more than nine years, and 4.62% for long-term loans over nine years.2Internal Revenue Service. Applicable Federal Rates If a private note charges less than the applicable AFR, the IRS treats the shortfall as taxable interest income to the lender and, between family members, as a gift from the lender to the borrower.3Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates
Loans of $10,000 or less between individuals are exempt from the imputed interest rules, as long as the borrower does not use the money to buy income-producing assets like stocks or rental property.3Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates Above that threshold, charging at least the AFR keeps the IRS from recharacterizing the transaction.
Forgiving the Debt Creates a Gift
Forgiving part or all of an unsecured note is treated as a gift for tax purposes. For 2026, the annual gift tax exclusion is $19,000 per recipient.4Internal Revenue Service. Frequently Asked Questions on Gift Taxes Forgiving up to that amount in a single year triggers no gift tax and no filing requirement. Above $19,000 the lender must file Form 709, though no tax is owed until the lender exceeds the $15,000,000 lifetime exemption.5Internal Revenue Service. What’s New – Estate and Gift Tax Married couples who both consent can exclude up to $38,000 per recipient per year.
State Usury Ceilings
Every state caps the interest rate a private lender can charge, and the ceilings vary widely. Some states set the limit for non-bank lenders as low as 6% to 10%. Others allow rates well above 20%. Charging more than your state permits can void the interest entirely, and in some states the lender forfeits the principal as well. Check your state’s usury statute before setting a rate. Getting it wrong does not just cut into your return; it can destroy your ability to collect at all.
What Happens When the Borrower Stops Paying
Without collateral to seize, the lender’s path to recovery runs entirely through the courts. It is slower and less certain than repossession or foreclosure, which is why strong default language in the note matters.
Demand and Acceleration
The typical first step is a formal demand letter notifying the borrower of the missed payment and the default. If the note includes a cure period, the borrower gets a short window to catch up. If the note includes an acceleration clause and the default is not cured, the lender can declare the entire remaining balance due at once rather than waiting for each installment. The demand letter also creates the paper trail a court will expect to see.
Lawsuit and Judgment
If the borrower ignores the demand, the lender files a civil suit for a money judgment. A well-drafted, signed note usually makes the case straightforward: present the note, show the default, ask the court to order payment. A judgment converts the private agreement into a court-ordered obligation and unlocks enforcement tools that were not available before.
Collecting on the Judgment
A judgment does not put cash in the lender’s pocket by itself. The lender still has to use state enforcement mechanisms to collect. The most common are wage garnishment, capped by federal law at the lesser of 25% of disposable earnings or the amount by which weekly disposable earnings exceed 30 times the federal minimum wage of $7.25 per hour;6Office of the Law Revision Counsel. 15 USC 1673 – Restriction on Garnishment bank levies, which freeze and seize funds in the borrower’s accounts subject to state exemption rules; and judgment liens on real property, which do not force a sale but must be paid off before the borrower can sell or refinance.
The full cycle from demand letter to actual cash can easily take a year or longer. That timeline is the practical cost of lending without collateral.
Bankruptcy Is the Worst Case
If the borrower files Chapter 7, an unsecured note is in serious jeopardy. A Chapter 7 discharge eliminates most unsecured debts, and a standard private promissory note is squarely in the category that gets wiped out.7Office of the Law Revision Counsel. 11 USC 727 – Discharge The lender receives whatever the trustee distributes from non-exempt assets, which in many Chapter 7 cases is nothing.
The exceptions are narrow. A debt obtained through fraud, false pretenses, or a materially false written financial statement is not dischargeable.8Office of the Law Revision Counsel. 11 USC 523 – Exceptions to Discharge If the borrower lied about income or assets to get the loan, the lender can challenge the discharge. But the burden of proving fraud is on the lender, and ordinary inability to repay does not qualify.
The Deadline to Sue
Every state sets a statute of limitations for suing on a defaulted promissory note. Once the deadline passes, the debt still technically exists but the lender loses the right to enforce it. For written contracts and promissory notes, the window is typically three to six years, though some states allow longer. The clock usually starts running from the first missed payment or, if the note is accelerated, from the date of acceleration. Sitting on a defaulted note for years is a good way to lose the only meaningful remedy the note provided.
When a Promissory Note Becomes a Security
This one catches sellers off guard. A promissory note sold to outside investors can be classified as a security under federal law, which triggers SEC registration requirements and serious liability for anyone who did not comply. The Supreme Court applies a “family resemblance” test: a note is presumed to be a security unless it closely resembles categories of notes that are clearly commercial, such as those tied to short-term consumer purchases or home mortgages.9Justia Law. Reves v. Ernst and Young, 494 US 56 (1990)
The SEC has warned that promissory note scams are among the most common forms of securities fraud. The typical pitch involves high promised returns, claims that the notes are “guaranteed” or “insured,” and sellers without proper securities licenses.10U.S. Securities and Exchange Commission. Promissory Notes – Investor Alert An unsecured promissory note offered as an “investment” with above-market returns is one of the clearest red flags in personal finance. Legitimate corporate notes are almost never sold directly to retail investors.
Where Unsecured Notes Actually Work
The most common setting is a loan between family or friends. The relationship substitutes for the credit check a bank would perform, and the written note replaces the handshake that too many people rely on. Putting the loan in writing prevents misunderstandings about timing and interest, and it protects the lender’s ability to claim a bad debt loss on their taxes if the borrower never repays. Remember the imputed interest rules: a zero-interest note to a relative for more than $10,000 will generate phantom taxable income for the lender, so setting the rate at or above the AFR avoids an unnecessary tax problem.
Small businesses without hard assets often use unsecured notes for capital, frequently backed by the owner’s personal guarantee.11U.S. Securities and Exchange Commission. Promissory Note Secured by Personal Guarantee A personal guarantee converts a business-only risk into a personal liability, so the owner’s savings, home equity, and other assets are exposed if the business fails.
Short-term bridge loans are the third common use. Speed is the whole point: a secured loan requires appraising collateral, filing liens, and perfecting a security interest. An unsecured note can close in days. The borrower keeps their assets free of liens; the lender accepts more risk and charges a higher rate. For smaller amounts, short time horizons, and relationships where trust is already established, that trade often makes sense.