Can an Offer Be Revoked After Acceptance? U.S. Contract Law Explained

In most cases, an offer cannot be revoked after it has been validly accepted. Once an offeror receives—or, in some situations, the offeree sends—a legally effective acceptance, the parties may have a binding contract. But the result depends on the offer’s terms, the method and timing of acceptance, and the applicable state law. Special rules can apply to options, sales of goods, unilateral contracts, and electronic communications.

The Short Answer: It Depends on When Acceptance Becomes Effective

An offer generally gives a person the power to create a contract by accepting it according to its terms. Before acceptance takes effect, the offeror can usually revoke the offer, subject to important exceptions. After an effective acceptance, the offeror usually cannot cancel the deal simply by changing their mind. The question is often not whether the offeror announced a revocation, but whether the offer had already been accepted under the governing rules.

Contract law in the United States is primarily state law. Courts may apply different rules depending on the transaction and jurisdiction. The law of the state named in a contract, or the law selected by a court under conflict-of-law rules, may matter. The Uniform Commercial Code (UCC), adopted in some form by every state, generally governs sales of goods; common law usually governs services, real estate, and many other agreements.

What Counts as a Valid Acceptance?

Acceptance is an objective expression of agreement to an offer’s terms. It may be communicated through spoken words, a signed document, an email, or conduct, if the offer and applicable law permit that method. Silence usually does not count as acceptance, though prior dealings, established practices, or the offeree’s conduct can sometimes affect the analysis.

For acceptance to be effective, the offer must generally be clear enough to accept, still open, and accepted by the person or people to whom it was made. The offeree must also follow any reasonable instructions about how to accept. If an offer says acceptance must arrive by a specific deadline or be delivered in a particular way, failing to meet that requirement can prevent a contract from forming.

A response that changes the offer’s terms may not be an acceptance. Under the traditional common-law “mirror image” rule, a purported acceptance that adds or alters material terms can operate as a counteroffer, which the original offeror may accept or reject. Under UCC rules for sales of goods, a definite and timely expression of acceptance may form a contract even when it includes additional or different terms, although the treatment of those terms depends on the circumstances and state law. The UCC’s rule appears in Section 2-207.

When Does Acceptance Take Effect?

The Mailbox Rule

Under the traditional mailbox rule, an acceptance sent by an authorized, reasonable method may become effective when it is properly dispatched—not when it arrives. That can mean a contract forms before the offeror learns that the offeree accepted. The rule is a default, not a guarantee: the offer’s wording, the communication method, and applicable state law can change the outcome.

The mailbox rule generally applies to acceptance, not revocation. A revocation is typically effective only when it reaches the offeree. As a result, an offeree who properly dispatches an acceptance before receiving a revocation may have formed a contract, even if the revocation arrives first. But a clearly stated requirement that acceptance must be received by a deadline, or a rule requiring a particular method, may displace the usual dispatch rule.

There are exceptions and complications. If the offeree sends a rejection and then an acceptance, or sends an acceptance and then a rejection, the timing and receipt of each message can matter. Courts may also treat instantaneous or near-instantaneous communications differently from mailed letters. For important agreements, the parties can reduce uncertainty by specifying that acceptance is effective only upon receipt, identifying the permitted communication method, and confirming delivery.

Email, Text, and Electronic Signatures

Electronic communications can form contracts when they show agreement and satisfy applicable requirements. The federal Electronic Signatures in Global and National Commerce Act (E-SIGN) generally prevents a contract from being denied legal effect solely because it is electronic. State laws based on the Uniform Electronic Transactions Act may also apply. These laws do not automatically make every email or text message a contract; the usual questions about offer, acceptance, intent, authority, and definite terms remain important.

Timing can be harder to establish with electronic messages. A message may be sent but delayed, filtered, misdirected, or never opened. The contract, the parties’ established practices, or governing electronic-transaction rules may determine when a message is received. A business or consumer should not assume that an unread email has no legal effect, or that a sent message necessarily proves timely acceptance.

When Can an Offer Be Revoked Before Acceptance?

Most offers can be revoked at any time before effective acceptance if the offeree receives notice of revocation. The offeror can communicate the withdrawal directly or, in some circumstances, through a reliable source. An offer can also end through expiration, rejection, a counteroffer, or the death or incapacity of a party, subject to applicable law and exceptions.

Simply deciding to withdraw is not usually enough. The revocation generally must reach the offeree before acceptance becomes effective. If an offeror tells a third party but the offeree does not learn of it in time, the offer may remain open for that offeree. Conversely, credible information from another source that the offeror has taken definite action inconsistent with the offer—such as selling the property to someone else—may be enough under some circumstances to end the offeree’s power to accept.

An offer may also expire at the deadline stated in its terms. If there is no stated deadline, it usually remains open for a reasonable time, judged in context. The type of transaction, how quickly prices or market conditions change, and the parties’ communications may all matter. A late acceptance may be treated as a new offer rather than an accepted contract.

Important Exceptions: Offers That May Be Kept Open

Option Contracts

An option contract is a separate agreement in which the offeror promises to keep an offer open for a set period. It is commonly supported by consideration—a payment or other bargained-for value—though statutes or other doctrines may create exceptions. If a valid option exists, the offeror generally cannot revoke the underlying offer during the option period. The offeree must still exercise the option correctly and on time.

Real estate transactions often include option provisions, and commercial agreements may use them as well. The exact wording matters: a statement that an offer will remain open is not necessarily an enforceable option if the required legal elements are missing. An option deadline may also set a different acceptance procedure from the one used for the original offer.

Firm Offers for the Sale of Goods

Under UCC Section 2-205, a merchant’s signed written assurance to keep an offer to buy or sell goods open may be irrevocable without consideration for the time stated—or, if no time is stated, for a reasonable time. The period cannot exceed three months under this provision. If the assurance appears on a form supplied by the offeree, the merchant must separately sign the assurance.

This “firm offer” rule is limited. It applies to offers by merchants involving goods, not every business offer or every kind of contract. A promise to keep an offer open for more than three months may require a separate option supported by consideration to remain irrevocable for the longer period.

Reliance on a Promise to Keep an Offer Open

In some situations, an offeree may reasonably and substantially rely on an offer before accepting it. Courts may apply a doctrine often called promissory estoppel or reliance to prevent an offeror from revoking an offer when fairness requires it. A frequently discussed example involves a subcontractor’s bid that a general contractor reasonably uses in preparing a larger bid. The result depends on the facts and governing state law; reliance does not automatically make every preliminary quote irrevocable.

Unilateral Contracts and Acceptance by Performance

A unilateral contract offers something in exchange for completing a specified act, such as a reward for returning lost property. In that setting, acceptance may occur through performance rather than a promise. The timing of revocation can therefore be less straightforward than in a simple exchange of signed promises.

Under the approach reflected in the Restatement (Second) of Contracts, beginning the invited performance can create an option that temporarily limits revocation, giving the offeree a reasonable opportunity to finish. Mere preparation may not be enough. The particular offer and the jurisdiction’s law matter, and the offeree generally must complete the requested performance to earn the promised exchange.

What Happens If an Offeror Tries to Revoke After Acceptance?

If a valid contract formed before the attempted revocation, the message may function as a refusal to perform rather than a cancellation of the agreement. Depending on the contract and the facts, that refusal may be an anticipatory breach. The other party may have remedies, which can include monetary damages or, in limited circumstances, a court order requiring performance.

Remedies are not automatic or identical in every case. A court may examine the contract’s terms, proof of loss, mitigation efforts, statutory rules, and any defenses. Some agreements include cancellation rights, termination provisions, notice requirements, or conditions that allow a party to exit. Exercising a contractually permitted cancellation right is different from revoking an offer after acceptance.

A contract can also end by mutual agreement, under a valid termination clause, or through legal doctrines such as impossibility in qualifying circumstances. Those events do not mean the original acceptance was ineffective. They concern whether an existing contract remains enforceable or what obligations remain.

Practical Steps When an Offer Is Revoked After Acceptance

• Preserve the timeline. Save the offer, acceptance, revocation notice, delivery confirmations, and related emails or messages. Note when each was sent and received.
• Check the exact terms. Look for an acceptance deadline, required delivery method, receipt condition, option provision, cancellation clause, and choice-of-law provision.
• Identify the type of transaction. The rules may differ for goods, services, real estate, employment, rewards, and other agreements.
• Avoid assuming a conversation settled everything. Follow up in writing and ask the other party to confirm the agreement and its effective date.
• Get legal advice promptly when stakes are high. Deadlines, evidence, and available remedies can depend on state law and the particular facts.

For authoritative background, the Legal Information Institute’s contract overview provides an accessible introduction, while the UCC text is available through state legislatures and legal databases. These general resources cannot determine whether a specific offer was accepted or revoked in time; that requires reviewing the communications and applicable law.

Common Questions About Revoking an Offer

Can a seller back out after accepting an offer?

If the seller and buyer formed a binding contract, the seller generally cannot withdraw merely because the seller received a better offer or changed their mind. The signed agreement may, however, contain contingencies or termination rights. Real estate rules and required formalities vary by state, so the document and jurisdiction are essential.

Can an offer be revoked if acceptance was mailed but not received?

Possibly, but the mailbox rule may make a properly sent acceptance effective upon dispatch. If the offer required receipt, specified another method, or falls under a different rule, the result may change. The dates, method, wording, and state law should be reviewed.

Can an offeror withdraw an offer that says it is open until Friday?

That wording alone may not prevent revocation. Unless the offer is supported by an enforceable option, qualifies as a UCC firm offer, or is protected by another doctrine, it may generally be revoked before acceptance despite the stated deadline. The surrounding facts and applicable law can create exceptions.

Does a verbal acceptance count?

It can, if the offer permits oral acceptance and the agreement does not require a writing. Some transactions are subject to statutes that require written evidence, including certain real estate contracts and sales of goods above a statutory threshold. Whether a verbal exchange formed a contract depends on the terms, proof, and governing law.