Adequate assurance is your right to demand written proof that the other side of a contract will actually perform when you have genuine reason to doubt it. Under Section 2-609 of the Uniform Commercial Code, a party to a contract for the sale of goods can send a written demand for this proof, suspend its own performance while waiting if that is commercially reasonable, and treat silence beyond 30 days as a repudiation of the contract. The same framework has been extended by courts and the Restatement (Second) of Contracts to reach agreements the UCC does not cover.1Legal Information Institute. Uniform Commercial Code 2-609 – Right to Adequate Assurance of Performance
When You Can Demand It
The right is not open-ended. Your insecurity has to rest on something concrete, and courts ask whether an objective, commercially reasonable person in your position would genuinely doubt the other side’s willingness or ability to perform. A vague sense of unease will not do, and neither will a desire to renegotiate terms you now regret.
The UCC’s official commentary and the case law give a sense of what qualifies. A buyer who has been paying on time and suddenly stops creates grounds for concern, even if the missed payments involve separate contracts between the same parties. Credible rumors of financial trouble can be enough, even if they later turn out to be false. Defective deliveries to other buyers with similar orders, a supposed business that turns out not to exist, and a pattern of late or nonconforming shipments have all been treated as sufficient.
In AMF, Inc. v. McDonald’s Corp., McDonald’s had reasonable grounds when a prototype machine performed so poorly that it required constant service calls and the manufacturer could not show it was able to produce a working version within a reasonable time.2Justia. AMF, Incorporated v. McDonalds Corporation Between merchants, both the reasonableness of the grounds and the adequacy of any response are judged by commercial standards, which means industry norms and trade practice carry real weight.1Legal Information Institute. Uniform Commercial Code 2-609 – Right to Adequate Assurance of Performance
How to Make the Demand
The demand must be in writing. A phone call expressing concern will not trigger the formal rights in Section 2-609, and a party that stops performing based on a verbal complaint alone risks being the one in breach. Put the concern, the grounds, and the request for assurance on paper, and send it in a way you can prove.1Legal Information Institute. Uniform Commercial Code 2-609 – Right to Adequate Assurance of Performance
Once the demand is out, you can suspend your own performance if suspension is commercially reasonable. A buyer who has demanded assurance from a seller does not have to keep prepaying for future shipments while the response is pending. But the suspension has to be proportionate to the concern. Halting all performance across a multi-part contract because of insecurity about one delivery can itself become a breach if a court later finds the reaction excessive.
What Counts as Adequate Assurance
The UCC does not hand you a checklist. Whether a response is adequate depends on the severity of the concern and the reputation of the party being asked. A well-regarded seller facing a minor defect might satisfy a demand with a written commitment to correct the problem. A seller with a spotty track record facing the same complaint may need to post a financial guarantee or ship an immediate replacement.
The forms that commonly satisfy a demand include:
- Written commitments backed by a documented performance history of on-time, conforming deliveries.
- Financial statements, when the worry is about the other side’s ability to pay or to fund production.
- Third-party guarantees or performance bonds, which shift risk to a financially stable parent or surety.
- Letters of credit, which are common in international deals and substitute a bank’s creditworthiness for the buyer’s.
- Cure of the underlying problem, such as replacing or repairing goods whose defects triggered the insecurity in the first place.
The test is proportionality. Whatever is offered has to realistically address the specific concern that prompted the demand. A vague “don’t worry” from a party that has already missed deadlines will not satisfy anyone, least of all a court reviewing the exchange later.
The 30-Day Clock
Under Section 2-609(4), the other side has a reasonable time to respond, and that time cannot exceed 30 days. The 30 days is a ceiling, not a default. A response may be expected much sooner depending on the industry, the nature of the goods, and how urgently performance is needed. In a fast-moving commodity market, even a week of silence can be commercially unreasonable.1Legal Information Institute. Uniform Commercial Code 2-609 – Right to Adequate Assurance of Performance
If the deadline passes without an adequate response, the failure is treated as a repudiation of the entire contract. You can then cancel and pursue breach-of-contract remedies, including covering by buying substitute goods and recovering the price difference, or you can wait a commercially reasonable time to see whether the other side comes around. Either way, you can suspend your remaining performance.1Legal Information Institute. Uniform Commercial Code 2-609 – Right to Adequate Assurance of Performance
The repudiating party still has a narrow window to walk it back. Under Section 2-611, a party that has repudiated can retract at any point before its next performance is due, as long as the other side has not already canceled, materially changed position, or otherwise treated the repudiation as final. A retraction has to clearly signal an intent to perform and must include any assurance that was justifiably demanded under Section 2-609.3Legal Information Institute. Uniform Commercial Code 2-611 – Retraction of Anticipatory Repudiation
Contracts That Are Not Sales of Goods
Section 2-609 only reaches contracts for the sale of goods. If your agreement is for services, real estate, an intellectual property license, or a long-term energy supply, the UCC does not apply directly. The principle has still followed you there. Section 251 of the Restatement (Second) of Contracts generalizes the same framework to all contract types: when you have reasonable grounds to believe the other party will commit a total breach, you can demand adequate assurance, suspend your own performance if that is reasonable, and treat a failure to respond within a reasonable time as a repudiation.
New York’s highest court adopted this approach in Norcon Power Partners, L.P. v. Niagara Mohawk Power Corp., holding that a party to a long-term energy contract outside the UCC could demand adequate assurance of future performance. The court reasoned that the policies behind Section 2-609 apply with equal force to complex, long-term commercial contracts where the parties cannot anticipate every contingency at signing.4Justia. Norcon Power Partners, L.P. v. Niagara Mohawk Power Corp. One difference matters in practice: outside the UCC there is no statutory 30-day ceiling. The Restatement uses a “reasonable time” standard, which gives courts more discretion and gives you less certainty about when silence becomes repudiation.
Risks of a Wrongful Demand
The right is not a renegotiation tool. If you demand assurance without genuine, reasonable grounds, the demand carries no legal weight, and the other side’s silence does not turn into repudiation, because the statute only triggers repudiation after a justified demand goes unanswered.
The larger danger is what tends to follow a bad demand. A party that also suspends its own performance has effectively stopped performing without legal excuse, and that suspension can itself be treated as a breach, potentially a repudiatory one, letting the other side cancel and sue for damages. Baseless demands have been described by courts as a form of commercial bad faith, sometimes used as a pretext to escape a contract the demanding party no longer wants.
Before sending a formal demand, be confident that your insecurity is both genuine and documentable. Write down what you know, when you learned it, and why it makes performance doubtful. If a court later concludes you had no reasonable basis, you can end up as the breaching party rather than the protected one.