Also known as:mutual manifestations of assent · mutual assent
Written by attorneys · grounded in primary & secondary sources — see below
A requirement for contract formation that each party objectively manifest agreement to the exchange through words or conduct. The requirement is satisfied when the parties' outward expressions align on the essential terms of a bargain even if their private intentions differ.
Sources & Authorities
How it applies
Common Examples
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Ambiguous Quantity Term in Grain Sale
High Plains Grain Co-op emailed Luis offering to buy his next season's corn output at the posted price. Luis understood the offer to cover all his farms while the co-op intended only the original 200-acre parcel. The co-op knew of Luis's expanded operations and his broader reading but Luis had no reason to know the co-op's narrower view. A court therefore enforces the contract according to Luis's meaning because only one party lacked reason to know of the difference.
Handshake and File Delivery Form Agreement
Ross telephoned Sigma Law's general counsel and proposed handling litigation for a flat fee of fifty thousand dollars if the files were sent. The general counsel nodded and shook hands at a later meeting then immediately couriered and emailed the files. Ross began research and appeared at a hearing without objection. The conduct of both parties supplies the required manifestation of mutual assent to the exchange of services for payment.
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Restatements
Casebooks
Performance Begins Without Written Letter
Monica Morgan offered to design a website for Momentum Capital in exchange for a stated fee. Momentum Capital's officer nodded and directed staff to transmit the project files the same day. Monica immediately began preliminary coding and submitted an initial draft. The parties' conduct of promising and beginning performance satisfies the requirement that each manifest assent to the exchange.
Offer Followed by Conduct Acceptance
Mariam Mansour emailed Matrix Technologies a proposal to supply custom parts at a fixed price. Matrix Technologies responded by issuing a purchase order that matched the quoted terms and later accepted delivery of the first shipment. The sequence of proposal and responsive conduct demonstrates the ordinary form of mutual manifestation of assent through offer and acceptance.
Conduct Forms Contract Without Identifiable Offer
Marco Marquez and Metro Bank exchanged emails discussing a loan restructuring. Neither message was labeled an offer or acceptance yet both parties began performance by making payments and releasing collateral. The ongoing course of conduct supplies the required manifestation of mutual assent even though no discrete offer or acceptance can be isolated.
Continuing Power to Accept Offer
Mustafa Mahmoud mailed an offer to sell equipment to Miles Montgomery with a ten-day acceptance period. Miles began preparing a response and mailed his acceptance on the ninth day. The mailed acceptance completes the manifestation of mutual assent because the offer remained open and gave Miles a continuing power to accept.
Common questions
Frequently Asked
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How does mutual manifestation of assent differ from subjective intent?+
Mutual manifestation of assent is determined by objective outward expressions rather than hidden thoughts. Courts examine words and conduct to decide whether the parties appeared to agree even if one later claims a different private understanding.
Supporting sources
When does a misunderstanding prevent mutual manifestation of assent?+
A misunderstanding defeats assent only when the parties attach materially different meanings and neither knows nor has reason to know of the other's meaning or when both know of the difference. If only one party knows or has reason to know of the difference the contract is interpreted according to the innocent party's meaning.
Supporting sources
Can conduct alone satisfy mutual manifestation of assent?+
Yes. Conduct that begins or renders performance in response to an offer or that shows agreement through actions such as delivering files or making payments can constitute the required manifestation even without spoken or written words.
Supporting sources
Does the absence of a signed writing defeat mutual manifestation of assent?+
No. Mutual manifestation of assent can occur through conduct or oral exchanges. A signed writing may be required by the statute of frauds for enforceability in certain cases but is not necessary to show the parties objectively manifested agreement.
Supporting sources
196 Va. 493, 84 S.E.2d 516Contracts
…of their intentions which are communicated between them. ” Clark on Contracts, 4 ed., § 3, p. 4. An agreement or mutual assent is of course essential to a valid contract but the law imputes to a person an intention corresponding to the reasonable meaning of his words and acts. If his words and acts, judged by a…