The Restatement (Second) of Contracts is a 1981 treatise published by the American Law Institute that synthesizes American common law on contracts into numbered sections courts across the country rely on when deciding disputes. It isn’t a statute and no legislature enacted it, but judges routinely adopt its provisions as the governing rule in their jurisdiction, which is why its sections on offer, consideration, breach, and damages show up constantly in judicial opinions and law school casebooks.
What It Is and Why Courts Follow It
The American Law Institute drafted the Restatement to bring order to a body of law that varied from state to state. The Second Restatement, published in 1981, updated the original 1932 version to reflect modern commercial practice and more flexible approaches to agreement. Teams of scholars, practicing attorneys, and judges collaborated to distill the best reasoning from courts nationwide into a single reference.
The Restatement carries persuasive authority rather than binding force. A court is free to ignore it. In practice, many courts have adopted specific Restatement sections as the law of their jurisdiction, and once a judge quotes §90 or §205 in an opinion, that language becomes part of that state’s common law going forward. The practical effect is that the Restatement operates as a near-universal rulebook even though no legislature voted it in.
What Makes a Contract Valid
A contract requires three ingredients: mutual assent, consideration, and capacity. Missing any one of them means there’s no enforceable agreement, no matter how detailed the paperwork.
Mutual Assent
Section 17 requires “a manifestation of mutual assent to the exchange and a consideration.” One side makes an offer showing a genuine willingness to be bound, and the other accepts it. The acceptance has to match the offer’s terms. If the responding party changes anything material, the response is a counteroffer, and the original offer dies.
Consideration
Section 71 requires a bargained-for exchange: each party gives up something of value or takes on an obligation they didn’t previously have. A promise to make a gift doesn’t count because nothing flows back to the promisor. Courts rarely second-guess whether the exchange was a fair trade. A dollar for a car can be valid consideration if both sides genuinely intended the bargain. What courts do reject is a sham, where the “consideration” is a formality nobody took seriously.1H2O. Restatement (Second) of Contracts 71
Capacity
Both parties need the legal and mental ability to understand what they’re agreeing to. Contracts signed by minors are voidable at the minor’s option. The minor can walk away, but the adult cannot. Once the minor reaches the age of majority, they have to decide within a reasonable time whether to honor the deal or disaffirm it. Minors remain liable for the reasonable value of necessities like food, shelter, and medical care, even if they disaffirm the underlying contract. People with severe cognitive impairments have similar protections, and any agreement reached through fraud, duress, or a fundamental mistake about what was being exchanged is subject to being unwound.
Unconscionability
Even when all three elements are present, a court can refuse to enforce a contract, or strike an individual clause, if it finds the terms unconscionable. Section 208 lets a court act when the deal was fundamentally unfair at the time it was made. Courts look at both the process (did one side have no real choice or understanding?) and the substance (are the terms shockingly one-sided?). A judge can enforce the rest of the contract while cutting out the offending provision, or limit how the unfair term applies.2Open Casebook. Restatement (Second) of Contracts 208
Promises Enforceable Without Consideration
Section 90 covers promissory estoppel. If you make a promise that you should reasonably expect will cause someone to act, or hold off from acting, and that person does rely on your promise to their detriment, a court can enforce the promise if letting you off the hook would be unjust.3H2O. Restatement Second of Contracts 90 – Promissory Estoppel
The classic example is a job offer. An employer promises a prospective hire the position, the person quits their current job and relocates, and the employer rescinds. No formal contract exists because the employee hasn’t started working. But the reliance was real and the harm is concrete. A court applying §90 could hold the employer to the promise or, more commonly, award damages limited to what the person actually lost. The section notes that “the remedy granted for breach may be limited as justice requires,” giving courts flexibility to tailor the award rather than treat it like a full contract.
Charitable pledges get special treatment. A promise to donate to a charity is binding under §90 without proof the charity actually relied on it. The section presumes the reliance.
When a Contract Must Be in Writing
Most contracts don’t need to be in writing. Section 110 identifies five categories that do:4H2O. Restatement (Second) Contracts 110 – Statute of Frauds
- A promise to pay someone else’s debt if they default (suretyship).
- A contract where marriage itself is the bargained-for exchange, which is where prenuptial agreements fall.
- Any contract for the sale or transfer of an interest in real property.
- A contract that by its terms cannot be fully performed within one year of when it’s made.
- A personal guarantee by an executor to cover the deceased person’s debts.
The writing itself doesn’t have to be formal. Under §131, it can be a letter, a receipt, a notation on a check, or any informal document, as long as it identifies the parties and the subject matter, shows that a contract exists, states the essential terms with reasonable certainty, and is signed by the party being held to it. “Signed” is interpreted broadly and can include initials or even a letterhead in some circumstances.
Rules That Govern Performance
The Parol Evidence Rule
When parties put their agreement in writing and intend it to be the final word, outside evidence of earlier conversations or side deals generally can’t override what the document says. If the written contract looks complete enough to cover the entire deal, a court treats it as fully integrated and won’t consider prior oral agreements or drafts that contradict the written terms.5Legal Information Institute. Parol Evidence Rule
The rule has meaningful exceptions. If the contract is only partially integrated, a court will allow consistent additional terms to fill in the gaps. Courts also permit outside evidence when the contract language is genuinely ambiguous. And evidence of fraud, duress, or mistake is always admissible, because those go to whether a valid contract existed in the first place.
Good Faith and Fair Dealing
Section 205 writes an implied duty of good faith and fair dealing into every contract, whether the parties mention it or not. Neither side can act in a way that destroys the other’s ability to receive the benefits they bargained for. The duty doesn’t require generosity. It prohibits using technicalities or bad-faith tactics to undermine the deal’s purpose while claiming you followed the letter of the agreement.6Open Casebook. Restatement (Second) of Contracts 205 – Duty of Good Faith and Fair Dealing
Conditions
A condition is an event that must happen before a party’s duty to perform kicks in. Section 224 defines it as “an event, not certain to occur, which must occur, unless its non-occurrence is excused, before performance under a contract becomes due.” If the condition doesn’t happen, the duty never arises, and failing to perform a duty that was never triggered isn’t a breach.7Open Casebook. Restatement (Second) of Contracts 224
A home inspection clause is the everyday example. If the purchase contract conditions the buyer’s obligation on a satisfactory inspection, and the inspection turns up major structural problems, the buyer’s duty to close never comes due.
Substantial Performance
Perfect performance is the ideal, but minor shortfalls don’t let the other side walk away entirely. When a party completes the core of what they promised but falls short on small details, they’ve substantially performed. The other side still owes payment, minus any offset for the deficiency, and can’t treat the contract as broken. The question is whether the non-breaching party received essentially what they bargained for.
When Non-Performance Is Excused
Impracticability
Section 261 discharges a party’s duty when performance becomes impracticable through no fault of their own, due to an event neither side anticipated at signing. Impracticable doesn’t mean inconvenient or more expensive than expected. It means extreme and unreasonable difficulty well beyond the normal range of risk. A supplier whose costs rise 10% hasn’t hit impracticability. A supplier whose only source of raw materials is destroyed by a natural disaster likely has.8Open Casebook. Restatement (Second) of Contracts 261 – Discharge by Supervening Impracticability
The defense fails if the party claiming it was at fault through negligence, a separate breach, or willful conduct, or if the contract’s language shows they assumed the risk. A party who guarantees delivery “regardless of circumstances” has essentially waived the impracticability defense.
Frustration of Purpose
Section 265 addresses a different problem. Performance is still physically possible, but the entire reason for the contract has evaporated. The frustration must be substantial, not just a reduction in profitability, but a near-complete destruction of the deal’s value. The frustrated purpose also has to be one both parties understood as the foundation of the agreement, not a private hope one side never shared.9Open Casebook. Restatement (Second) of Contracts 265
The textbook illustration is renting a room to watch a parade that gets canceled. You can still use the room. Nothing prevents performance. But the entire point of the contract has vanished. Courts apply the doctrine cautiously, and a party who could have foreseen the frustrating event may be denied relief.
What Counts as a Breach
A breach happens when a party fails to perform a contractual duty and has no valid excuse. The distinction between material and minor breach controls what the injured party can do about it.
Material vs. Minor Breach
Section 241 lays out five factors courts weigh in deciding whether a breach is material:
- How much of the expected benefit the injured party lost.
- Whether money damages can adequately compensate for that lost benefit.
- How much the breaching party would forfeit if the contract is canceled.
- Whether the breaching party is likely to cure the failure.
- Whether the breaching party acted in good faith.
A material breach lets the injured party suspend their own performance and pursue damages for the full value of the broken deal. A minor breach entitles the injured party only to compensation for the specific shortfall, not to walk away. A contractor who finishes 98% of a renovation but installs the wrong cabinet hardware has breached, but probably not materially.
Anticipatory Repudiation
You don’t always have to wait for the performance deadline to pass before treating a contract as broken. Under §250, a repudiation occurs when one party makes a clear statement that they won’t perform, or takes a voluntary action that makes performance impossible. The statement has to be definitive. Expressing doubt about willingness or ability isn’t enough. A flat declaration of “I’m not going to deliver” or “I won’t pay unless you agree to new terms that go beyond the contract” qualifies.10Open Casebook. Restatement (Second) of Contracts 250
When a repudiation happens before performance is due, §253 gives the injured party an immediate claim for damages for total breach. There’s no need to wait and see if the other side changes their mind, which lets the injured party start looking for a replacement deal right away.
What the Injured Party Can Recover
The Restatement organizes remedies around three measures of a party’s loss, plus equitable relief for situations where money alone won’t do the job.
Expectation, Reliance, and Restitution
Section 344 identifies the primary remedy as the expectation interest: putting you in the position you’d occupy if the contract had been performed. If you contracted to buy goods for $10,000 and sell them for $15,000, and the seller breaches, your expectation damages are the $5,000 profit you lost.11H2O. Restatement (Second) of Contracts 344
When expectation damages are too speculative to prove, which is common with new businesses or novel ventures, the reliance interest serves as a fallback. Reliance damages reimburse you for what you actually spent in preparing to perform: deposits paid, materials purchased, opportunities passed up. They don’t include the profit you hoped to make.
Restitution takes a different approach. Instead of measuring your loss, it measures the breaching party’s gain. If you’ve already delivered goods or performed services before the other side breached, restitution requires them to return what they received or pay for its value. The goal is preventing unjust enrichment rather than compensating your expectations.
Specific Performance
Money damages are the default remedy, and courts won’t order specific performance if damages would adequately protect the injured party’s expectation interest. Specific performance becomes available when the subject matter is unique enough that no substitute exists. Real estate is the classic example, since every parcel of land is considered unique. Rare artwork, family heirlooms, and one-of-a-kind business assets can also qualify.12Open Casebook. Restatement (2d) Sections on Specific Performance – Section: Effect of Adequacy of Damages
Nominal Damages
When a breach occurs but causes no provable financial harm, §346 allows a court to award nominal damages, a token amount that recognizes the breach happened even though the injured party can’t show a dollar figure. The award establishes that a breach occurred, which can affect future dealings, terminate ongoing obligations, or serve as a predicate for other claims.13OpenCasebook. Restatement (2d) of Contracts Excerpts
Limits on Recovery
Winning a breach claim doesn’t mean you recover every dollar you lost. Two constraints trip up a lot of claimants.
Foreseeability
Under §351, damages are only recoverable for losses the breaching party had reason to foresee when the contract was made. Losses that flow naturally from the breach in the ordinary course of events are always foreseeable. Unusual or consequential losses, like a factory shutting down because a single replacement part arrived late, require the injured party to show the breaching party knew about those special circumstances at the time of contracting. If you never told the seller that a delayed shipment would idle your entire production line, you probably can’t recover those losses.14Open Casebook. Restatement (Second) of Contracts 351 – Unforeseeable and Related Limitations on Damages
Section 351 also gives courts discretion to cap damages even for foreseeable losses when the amount would be disproportionate to the contract’s value, sometimes limiting recovery to reliance costs or excluding lost profits entirely.
Duty to Mitigate
Section 350 bars recovery for any loss the injured party could have avoided “without undue risk, burden or humiliation.” If a seller breaches and identical goods are available on the open market, you can’t sit back, watch your losses pile up, and then sue for the full amount. You have to make reasonable efforts to find a substitute. If you do make reasonable efforts and they fail, you’re not penalized for trying. The costs of those unsuccessful efforts are themselves recoverable.15Open Casebook. Restatement (Second) of Contracts 350
Foreseeability and mitigation function as reality checks on contract damages. They prevent a breach from becoming a windfall and require the injured party to act reasonably after the deal falls apart.