A demand note is a promissory note with no fixed repayment date, and it lets the lender call for full repayment whenever they choose. That single feature is what sets it apart from ordinary loans, and it drives every other question worth asking before you sign one or accept one. The balance is theoretically due the moment the ink dries; the lender is simply choosing not to collect yet.
How a Demand Note Differs From a Term Loan
Under the Uniform Commercial Code, a note is “payable on demand” if it explicitly says so, or if it simply states no time for payment at all.1Legal Information Institute. UCC 3-108 – Payable on Demand or at Definite Time Even a bare-bones IOU with no repayment schedule is technically a demand instrument.
A term loan locks in specific payment dates and an amortization schedule. You know from day one when each payment is due and when the loan ends. A demand note offers none of that certainty. The debt sits open until the lender formally calls it in or the borrower pays voluntarily.
The tradeoff cuts both ways. Borrowers get flexibility and no pressure from a set amortization schedule. Lenders keep the option to pull their money back whenever circumstances change. Financial planning is harder, because you should be ready in principle to produce the full balance on short notice.
What Makes a Demand Note Legally Valid
To qualify as a negotiable instrument with full UCC protections, the note has to contain an unconditional promise to pay a fixed amount of money, be payable to a specific person or to bearer, and be payable on demand. It also cannot require the borrower to do anything beyond paying the money owed.2Legal Information Institute. UCC 3-104 – Negotiable Instrument
A few additions are allowed without destroying negotiability. The note can require the borrower to maintain collateral, authorize the holder to seize collateral on default, or waive certain legal protections. Tacking on other conditions or obligations turns the document into an ordinary contract rather than a negotiable instrument, which limits how easily it can be transferred and enforced.2Legal Information Institute. UCC 3-104 – Negotiable Instrument
If you don’t want the note transferred to anyone else, include a conspicuous statement that it is not negotiable. Without that language, the lender can sell or assign the note, and whoever ends up holding it can demand payment on the same terms.
Interest, Collateral, and Prepayment
A demand note can carry a fixed rate, a variable rate tied to something like the prime rate, or no interest at all, as long as the chosen rate complies with applicable usury laws. The note should say what the rate is, how interest is calculated, and when interest payments are due, whether monthly, quarterly, or accrued until the note is called.
The note can be secured or unsecured. A secured note requires the borrower to pledge specific assets as collateral. If the borrower doesn’t pay when called, the lender can seize and sell that collateral under the UCC’s rules for secured transactions.3Legal Information Institute. UCC Article 9 – Secured Transactions An unsecured note relies entirely on the borrower’s promise, which means the lender has to sue and win a judgment before collecting.
Most demand notes allow the borrower to prepay principal, in whole or in part, at any time without penalty. Paying down the balance when extra cash is available reduces interest costs and shrinks the amount that could be called later.
When People Use Demand Notes
Demand notes turn up most often where the parties already trust each other or where the financing need is genuinely open-ended.
- Family loans, where a parent lends money to a child for a home purchase or business startup. Rigid repayment deadlines would feel wrong, and the child benefits from flexible terms. These arrangements require attention to IRS rules to avoid reclassification as a taxable gift.
- Short-term corporate financing, where a business needs quick access to funds for an inventory purchase or a temporary gap in receivables and doesn’t want to negotiate a full term loan.
- Intercompany transfers, where a parent corporation moves cash to a subsidiary and wants the ability to pull it back if the subsidiary’s financial condition weakens.
Tax Rules for Below-Market Demand Loans
When a demand note charges interest below the IRS’s Applicable Federal Rate, tax consequences can catch both parties off guard. Under Section 7872 of the Internal Revenue Code, the IRS treats the difference between the AFR and whatever the note actually charges as “forgone interest.” That gap is taxed as if the lender gave the money to the borrower and the borrower paid it back as interest, even though no cash changed hands.4Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates
For family loans structured as demand notes, the fiction has two parts. The forgone interest is treated as a gift from lender to borrower, and then as an interest payment from borrower back to lender. The lender owes income tax on the phantom interest, and the forgone amount counts toward the annual gift tax exclusion. These deemed transfers happen on the last day of each calendar year.4Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates
The IRS publishes updated AFR rates monthly, broken out by loan term. For demand loans, the short-term AFR applies. As of early 2026, the short-term AFR is approximately 3.59% annually.5Internal Revenue Service. Applicable Federal Rates Charging at least this rate avoids the imputed interest rules entirely.
There is a meaningful exception for small loans. Section 7872 does not apply to gift loans between individuals when the total outstanding balance stays at or below $10,000, unless the loan is used to buy or carry income-producing assets.4Office of the Law Revision Counsel. 26 USC 7872 – Treatment of Loans With Below-Market Interest Rates The same $10,000 threshold applies to compensation-related and corporation-shareholder loans, though the exception disappears if tax avoidance is one of the principal purposes of the arrangement.
How the Lender Actually Demands Payment
Under the UCC, a demand can be made by any commercially reasonable means, including oral, written, or electronic communication. It takes effect when the borrower receives it.6Legal Information Institute. UCC 3-501 – Presentment There is no legal requirement that the demand be in writing, but proving the demand matters enormously if the borrower doesn’t pay and the dispute ends up in court. Certified mail with return receipt produces a signed, dated record.
Many demand notes build in a notice period, commonly 10 to 30 days, giving the borrower time to arrange payment after receiving the call. If the note is silent, general contract principles may still give the borrower a reasonable time to pay. Once that window closes, the full balance is overdue. If the note is secured, the lender’s rights to the collateral become enforceable at that point.
The Real Risk for Borrowers
The biggest risk of signing a demand note is easy to underestimate: the lender can call the entire balance for any reason. The UCC’s good faith requirement for acceleration clauses, which forces a lender on a term loan to genuinely believe repayment is at risk before speeding things up, explicitly does not apply to demand notes.7Legal Information Institute. UCC 1-309 – Option to Accelerate at Will A demand note is not being “accelerated” when the lender calls it. It was always due on demand.
A lender can call even when the borrower is current on interest and the underlying business is healthy. Courts have generally upheld that right, though a handful have been sympathetic to bad-faith arguments where a note was called without cause. The weight of authority favors the lender.
The practical takeaway: never sign a demand note for an amount you couldn’t realistically repay on short notice, or at least have a clear understanding with the lender about what would trigger a call. That understanding is only as reliable as the relationship. If the lender’s circumstances change, a new loan officer takes over, or the note gets transferred to a third party, the informal agreement to let the note ride can evaporate overnight.
How Long a Demand Note Stays Enforceable
A demand note doesn’t stay enforceable forever. Under UCC Section 3-118, if the lender never makes a demand and neither principal nor interest has been paid for a continuous 10-year period, the right to enforce the note expires.8Legal Information Institute. UCC 3-118 – Statute of Limitations Once a demand is made, a separate limitations period starts running on the right to sue. That post-demand period varies by state, but six years is common.
This clock matters in family lending, where a parent lends money to a child and years pass without repayment. If a full decade goes by with no principal or interest paid and no formal demand, the note becomes legally unenforceable. Even a small interest payment restarts the clock.
What Happens If the Borrower Doesn’t Pay
If the notice period passes without payment, the lender’s next step depends on whether the note is secured. On a secured note, the lender can enforce the security interest in the pledged collateral under UCC Article 9, generally by repossessing and selling it and applying the proceeds to the debt.3Legal Information Institute. UCC Article 9 – Secured Transactions Any surplus goes back to the borrower; any shortfall can be pursued as a deficiency.
On an unsecured note, the lender’s only option is to sue for a judgment. If the lender wins, the judgment can be enforced through wage garnishment, bank levies, or property liens, depending on what the jurisdiction allows. On a small note, the cost of litigation may not justify the recovery.
What Happens When a Party Dies
A demand note doesn’t disappear when either party dies. If the borrower dies, the debt becomes an obligation of their estate. The executor or personal representative pays the note from estate assets before distributing anything to heirs. Family members aren’t personally liable unless they co-signed. If the estate doesn’t have enough to cover all debts, the note holder may recover only a fraction, or nothing at all if higher-priority creditors consume the available funds.
If the lender dies, the note becomes an asset of the lender’s estate. The executor can collect on it, call it due, or distribute it to heirs under the will or state inheritance laws. A note held in a revocable living trust passes to the trust’s beneficiary outside probate. When the note lacks clear language about successors or assigns, probate involvement may be needed before anyone can collect. Poorly documented or informal notes are especially vulnerable, since the borrower may dispute the terms once the original lender is no longer around to confirm them.