In law, duress means being forced to act — to sign a contract, hand over property, or commit a crime — because of an unlawful threat so serious that an ordinary person would feel they had no real choice. When a court finds duress, it treats the coerced action as something less than a free decision: a contract can be undone, or criminal responsibility can be excused. The specifics differ between civil and criminal cases, but the underlying idea is the same across both.
The Core Definition
Duress describes a situation where one person uses unlawful threats or coercive behavior to force another into doing something they would not otherwise do. Courts have defined it as pressure that “practically destroys the free agency of a party” and causes them to act against their own interests.1Cornell Law School. Duress A vague sense of discomfort or ordinary stress is not enough. The coercion has to overpower a person’s ability to make an independent decision, and the threat has to be immediate enough that walking away, calling the police, or using a legal remedy was not a realistic option at the time.
What Kinds of Threats Count
Not every threat qualifies. Courts applying the Restatement (Second) of Contracts recognize four categories of improper threats:
- A threat of a crime or tort, such as physical harm or damage to property.
- A threat of criminal prosecution used as leverage.
- Misuse of civil legal process, meaning threatening a lawsuit in bad faith rather than to pursue a legitimate claim.
- A threat to breach the duty of good faith under an existing contract, such as refusing to perform unless the other side agrees to new, unreasonable terms.2Contracts. R2K 176 – When a Threat Is Improper
These categories matter because aggressive negotiation, even very hard bargaining, is not duress. The line is crossed when pressure shifts from legitimate persuasion to a wrongful threat that exploits the other side’s vulnerable position.
What You Have to Prove
The person claiming duress has the burden of showing it. In a contract dispute, the party seeking to escape the agreement must prove that an improper threat actually caused them to sign. In a criminal case, duress is an affirmative defense, and the defendant must present evidence of a reasonable threat of imminent death or serious bodily harm.1Cornell Law School. Duress Across both settings, three elements come up again and again.
The Threat Caused the Action
There must be a direct link between the coercion and what you did. If you would have signed the contract or committed the act regardless, duress does not apply. The threat has to be the actual reason for the decision, not a background factor that made an already-planned choice easier.
No Reasonable Alternative
You must show that complying was essentially your only option. If you could have sought police protection, contacted a lawyer, or refused without facing the threatened harm, the claim typically fails. Courts ask whether the pressure was immediate and severe enough to eliminate any other realistic path.1Cornell Law School. Duress
The Threat Was Immediate
The threat generally has to be present and imminent, not something that might happen weeks or months later. One court described the requirement as “present, imminent, and impending” with no opportunity for escape.3Maryland Courts. Duress Defense If there was time to seek help or find another way out, the law expects you to have used it.
Physical Duress and Economic Duress
Duress comes in two main forms, and the distinction matters because the proof looks different.
Physical Duress
Physical duress involves threats of bodily harm, unlawful imprisonment, or other violence unless the victim complies. The threat can be aimed at the victim or at a family member or someone close to them. Because the threat of force is so direct, courts readily accept that it overcomes free will.
Economic Duress
Modern courts also recognize economic duress, sometimes called business compulsion, where the pressure is financial rather than physical. Proving it generally requires showing that the other party made an improper threat, that the threat would cause serious financial harm, and that no reasonable alternative source of supply or remedy was available.4Cornell Law School. Economic Duress
In one well-known case, a subcontractor stopped delivering precision military parts and demanded steep price increases on both past and future orders. The manufacturer reached out to ten alternative suppliers, but none could deliver in time to meet government deadlines. Because the manufacturer had no realistic alternative, the court found economic duress and set aside the forced agreement. A threat to breach a contract is not enough on its own; the victim also has to show that the goods or services could not be obtained elsewhere and that a later breach-of-contract lawsuit would not provide adequate protection.5New York State Unified Court System. Austin Instr. v Loral Corp.
What Duress Does to a Contract
When duress is proven, the usual result is that the contract becomes voidable at the victim’s choice. The agreement is technically valid until the coerced party acts to cancel it. They can go through with the deal if they want, or ask a court to rescind it and restore both sides to their original positions.6Restatement (Second) of Contracts. Restatement (Second) of Contracts 175
There is a narrower, more extreme category. If someone uses actual physical compulsion to force a signature, such as physically grabbing a person’s hand and moving it across the page, the signature is not treated as that person’s act at all. The contract is void from the start and never legally existed, so there is nothing to rescind.7H2O Casebooks. Restatement (Second) of Contracts 174 – When Duress by Physical Compulsion Prevents Formation of a Contract
Timing matters if you want to challenge a voidable contract. Once the coercion ends, actions that signal acceptance — continuing to perform, making payments, using property received under the agreement, or telling the other party you intend to honor it — can count as ratification and waive the right to void the deal. Steps you take while still under threat do not lock you in, because ratification only counts after the pressure lifts. The safest course is to communicate your intent to disaffirm the contract as soon as the coercion stops and to stop performing under it.
Duress as a Criminal Defense
In criminal law, duress is an affirmative defense. Under the Model Penal Code, a defendant can raise duress if they committed a crime because someone used or threatened unlawful force against them or another person, and a person of “reasonable firmness” in the same situation would also have been unable to resist.8Criminal Law Web. Section 2.09 – Duress That is an objective standard. Feeling personally overwhelmed is not enough; the question is whether an ordinary person facing the same threat would have given in.
The defense also fails if the defendant recklessly or negligently put themselves in the situation that led to the coercion. Someone who voluntarily joins a criminal organization and is later threatened into committing a crime may lose access to the defense, because they created the circumstances that made the coercion possible.8Criminal Law Web. Section 2.09 – Duress
One important boundary: duress is usually unavailable, or sharply limited, for the most serious violent crimes. Most states that codify duress explicitly bar it as a defense to murder. Some extend the bar to any homicide, including manslaughter, or to offenses involving serious physical injury. A few states take a middle path and allow duress to reduce the severity of a homicide charge rather than excuse it entirely.9University of Pennsylvania Law School. Evernote Export – 8.05. Duress For crimes short of homicide, such as robbery, theft, or drug offenses, duress generally remains available as a complete defense if the other requirements are met.
How Duress Differs From Undue Influence
Duress is easy to confuse with undue influence, but they operate differently. Duress involves overt threats and concrete consequences: fear of harm, financial ruin, prosecution. Undue influence is subtler. It involves unfair persuasion by someone who holds a position of trust or dominance over the victim, such as a caregiver, family member, attorney, or financial advisor.10Cornell Law School. Confidential Relation
With undue influence, there may be no specific threat at all. The wrong is the exploitation of a relationship in which the victim naturally defers to the other person’s judgment, often alongside isolation from independent advice and a lopsided result. A common example is an elderly person whose caretaker persuades them to change their will. Both duress and undue influence can make a contract voidable, but duress claims turn on identifying a specific wrongful threat, while undue influence claims turn on the nature of the relationship and the fairness of the outcome.