The UCC’s Section 1-203 obligation of good faith — now renumbered as Section 1-304 without any change in substance — requires every party to a contract governed by the Uniform Commercial Code to perform and enforce that contract honestly and in line with reasonable commercial standards of fair dealing. The duty is automatic, cannot be removed by agreement, and attaches to every UCC contract whether the parties mention it or not. What it does not do is create a lawsuit of its own. Instead, it changes how a court judges whether you breached the duties already written into your deal.
What Good Faith Actually Requires
The UCC defines good faith as “honesty in fact and the observance of reasonable commercial standards of fair dealing.”1Legal Information Institute. Uniform Commercial Code 1-201 – General Definitions Two tests sit inside that phrase.
The first is subjective. Did you act honestly, without intent to deceive or manipulate the other side? If you hid information or misled your counterpart to gain a contractual advantage, you fail this test regardless of what the contract literally let you do.
The second is objective. Would a reasonable person in your industry consider your conduct fair? This measures your behavior against what professionals in the same trade would recognize as acceptable. A wholesaler who ships technically conforming goods but times delivery to sabotage a retailer’s peak season can fail the objective test without ever telling a lie.
Under the revised Article 1, this two-part definition applies to everyone, merchants and non-merchants alike.1Legal Information Institute. Uniform Commercial Code 1-201 – General Definitions Older versions of the code set a lower bar for non-merchants, requiring only subjective honesty while reserving the objective fair-dealing standard for merchants.2Legal Information Institute. Uniform Commercial Code 2-103 – Definitions and Index of Definitions The unified definition closed that gap. References you may find to a split standard are describing the old version.
Which Contracts the Duty Covers
The obligation applies to “every contract or duty within the Uniform Commercial Code.”3Legal Information Institute. Uniform Commercial Code 1-304 – Obligation of Good Faith That reaches:
- Sales of goods under Article 2 — movable property like inventory, equipment, raw materials, and manufactured products.4Legal Information Institute. Uniform Commercial Code 2-105 – Definitions: Transferability, Goods, Future Goods, Lot, Commercial Unit
- Leases of personal property under Article 2A.
- Negotiable instruments under Article 3, including checks, promissory notes, and drafts.
- Secured transactions under Article 9, throughout the life of the debt.
Real estate sales and transfers of title fall outside the UCC entirely.5Legal Information Institute. Uniform Commercial Code 9-109 – Scope Pure service contracts — hiring a consultant, retaining an accountant, engaging a developer — are governed by common law instead. For contracts that mix goods and services, courts apply a “predominant purpose” test: if goods are the main thrust with services incidental, the UCC governs the whole deal; if services dominate, common law does. A party counting on UCC good faith in a contract a court later classifies as predominantly for services will find the protection unavailable.
You Cannot Waive It
The obligation of good faith cannot be disclaimed by agreement.6Legal Information Institute. Uniform Commercial Code 1-302 – Variation by Agreement A contract clause purporting to waive it is unenforceable. This is one of the few UCC rules the parties simply cannot contract around.
What parties can do is set the standards by which performance of the obligation is measured, so long as those standards are not “manifestly unreasonable.”6Legal Information Institute. Uniform Commercial Code 1-302 – Variation by Agreement You could agree that good-faith delivery means delivery within a specified window tied to industry norms. You could not define good faith so narrowly that it stops meaning anything.
When the Duty Attaches
The obligation runs during performance and enforcement. It does not reach negotiation or formation of the contract.3Legal Information Institute. Uniform Commercial Code 1-304 – Obligation of Good Faith While you’re bargaining, you can pursue your own financial interests, push hard terms, and walk away. Once both sides are committed, the relationship shifts, and good faith governs how you exercise every right and discharge every duty.
The point is to prevent a party from weaponizing contractual power. A creditor with the right to demand payment cannot do so in a way calculated to cause maximum harm to a debtor making a genuine effort. A seller with discretion over delivery method cannot deliberately pick the slowest option to sabotage the buyer’s business. Each side is entitled to receive the actual benefit of the bargain they struck.
Acceleration Clauses
Loan and secured-transaction agreements often let the lender accelerate the full balance when the lender “deems itself insecure.” The UCC restricts that power to situations where the lender genuinely believes, in good faith, that the prospect of payment or performance is impaired.7Legal Information Institute. Uniform Commercial Code 1-309 – Option to Accelerate at Will A lender who accelerates to extract an early payoff or pressure a renegotiation is acting in bad faith.
If the borrower challenges the acceleration, the burden of proving lack of good faith falls on the borrower.7Legal Information Institute. Uniform Commercial Code 1-309 – Option to Accelerate at Will That is a hard burden, which is why borrowers facing acceleration should document any evidence that the lender’s stated concerns were pretextual.
Open Price, Requirements, and Output Contracts
Good faith does especially visible work in contracts that leave key terms flexible. When a contract lets one party set the price, that price must be fixed in good faith.8Legal Information Institute. Uniform Commercial Code 2-305 – Open Price Term A supplier cannot exploit pricing discretion by charging wildly above market rates to squeeze a captive buyer.
Requirements contracts (buyer takes all it needs from one seller) and output contracts (seller delivers everything it produces to one buyer) must likewise operate in good faith. The quantity demanded or supplied must reflect actual needs or output and cannot be “unreasonably disproportionate” to any stated estimate or prior comparable volume.9Legal Information Institute. Uniform Commercial Code 2-306 – Output, Requirements and Exclusive Dealings A buyer in a requirements contract cannot triple orders overnight because prices dropped and it wants to stockpile at the seller’s expense.
It Is Not a Standalone Claim
This is where the doctrine is most often misread. Section 1-304 does not create an independent cause of action. You cannot sue someone solely for breaching the duty of good faith under the UCC as if it were a freestanding obligation. The good faith requirement modifies your existing contractual duties. A failure to perform in good faith is a breach of the specific contract provision you performed badly, not a separate claim floating above the contract.
The official commentary to Section 1-304 is explicit: the doctrine “merely directs a court towards interpreting contracts within the commercial context in which they are created, performed, and enforced, and does not create a separate duty of fairness and reasonableness which can be independently breached.” Your claim will be framed as a breach of the delivery obligation, the payment obligation, or whatever specific duty was discharged in bad faith. Good faith shapes how the court evaluates that breach; it is not the breach itself.
Good Faith in Contract Interpretation
Courts treat the obligation as an implied term that helps fill gaps in incomplete agreements. Commercial contracts cannot anticipate every scenario, and when a dispute arises over something the document does not directly address, judges look to good faith to determine what the parties would have reasonably expected. If a contract gives one party discretion over when to schedule inspections, good faith requires that party to pick reasonable times, not 3 a.m. on a holiday weekend.
This gap-filling function has limits. Good faith remains subordinate to the written terms the parties agreed to. It cannot rewrite the deal or override a clear, unambiguous provision. If a contract explicitly grants one party an absolute right to terminate for any reason, good faith generally cannot be used to second-guess that termination.10University of Arkansas School of Law. Good Faith and Reasonable Expectations Clear drafting is still the strongest protection against disputes. Good faith catches what the drafting missed; it will not rescue a party from a bad deal they knowingly signed.
Remedies for a Bad Faith Breach
Because a good faith violation is treated as a breach of a specific contractual duty, the remedies follow the standard UCC framework for the type of transaction involved. In a sale of goods under Article 2, an aggrieved buyer can recover incidental damages (costs tied to inspecting, transporting, or handling rejected goods and arranging substitute purchases) and consequential damages covering losses the seller had reason to know about at contracting that the buyer could not reasonably prevent.11Legal Information Institute. Uniform Commercial Code 2-715 – Buyer’s Incidental and Consequential Damages
Specific performance, a court order forcing the breaching party to actually deliver, is available when goods are unique or other circumstances make money damages inadequate. Punitive damages generally are not available for breach of contract under the UCC. The traditional rule in most jurisdictions is that punitives require conduct also amounting to an independent tort, such as fraud. A deliberate or even malicious breach will typically still be capped at compensatory damages unless the conduct crosses into tortious territory.
A party exercising a contractual right in bad faith may also find the right itself unavailable. If a lender accelerates a loan without a genuine good faith belief that repayment is in jeopardy, a court can invalidate the acceleration outright rather than only award damages.7Legal Information Institute. Uniform Commercial Code 1-309 – Option to Accelerate at Will
How Long You Have to Sue
Because good faith violations are folded into breach of contract claims, the statute of limitations tracks the underlying transaction. For sales of goods under Article 2, UCC Section 2-725 sets a default of four years from the date the cause of action accrues, generally the date of the breach rather than the date you discovered it. Some states have adopted shorter or longer periods, producing a range of roughly three to six years depending on the jurisdiction.
Parties can agree to shorten the limitations period to as little as one year, but they generally cannot extend it beyond the statutory default. If your claim arises from a secured transaction, a lease, or a negotiable instrument rather than a sale of goods, the applicable period may differ based on the UCC article involved and your state’s enacting legislation. The clock runs whether or not you realize the breach has occurred, which is why suspected bad faith conduct deserves prompt attention.