
Acceptance is a fundamental aspect of contract law, encompassing various forms and scenarios. For a contract to be formed, an offer must be accepted, with both parties agreeing to an exchange of value. Acceptance must be unequivocal, definite, and unqualified, mirroring the terms of the offer without deviation. It can be expressed explicitly or implicitly, with the latter inferred through actions or implied authorization from customary transactions. Silence is generally not considered acceptance, even if the offeror stipulates it, and courts tend to view inaction as an invalid indication of acceptance. Acceptance is typically communicated to the offeror, although there are exceptions where silence may be deemed acceptance if specified in the offer. Understanding the rules and principles governing acceptance is crucial for navigating contractual agreements effectively.
| Characteristics | Values |
|---|---|
| Nature of acceptance | Definite, documented approval |
| Correspondence with the offer | Must mirror the terms of the offer |
| Communication | Must be communicated to the offeror |
| Silence | Silence is not considered acceptance |
| Acceptance-upon-dispatch rule | Effective when dispatched, even if lost in transmission |
| Proper dispatch | Proper addressing, packaging, and posting of acceptance |
| Implied authorization | Implied from what is customary in similar transactions |
| Express authorization | Acceptance must be by a specified means of communication |
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What You'll Learn

Acceptance must be explicit
For a contract to be formed, an offer must be accepted. This acceptance must be unequivocal, definite, and documented. In other words, it must be explicit. This means that the offeree must provide an affirmative statement expressing their acceptance of the offer. This is known as express or explicit acceptance.
Explicit acceptance is distinct from implied acceptance, where the offeree performs a specific action to imply their acceptance. While implied acceptance can create an implied contract, which may be enforceable under certain circumstances, it does not have the same legal status as explicit acceptance.
The requirement for explicit acceptance ensures that all parties are aware of the contract's existence and prevents individuals from being bound by a contract without their knowledge. It also ensures that the acceptance is not open to interpretation or ambiguity.
To illustrate, consider the case of Entores Ltd v Miles Far East Corporation (1955). In this case, Lord Denning explained that if an offer is shouted across a river, and the offeree's acceptance is drowned out by noise before it can be heard, there is no contract until the offeror becomes aware of the acceptance. Similarly, in the case of Thomas v. Brinkibon v Stahag Stahl, an email sent and received during working hours was deemed an effective acceptance, even though the recipient had already left for the day.
In conclusion, acceptance must be explicit to ensure valid contract formation. This explicit acceptance can be achieved through express affirmative statements, providing certainty and clarity regarding the offeree's intention to accept the offer.
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Acceptance must be unqualified
In the case of Winn v. Bull (1877), the acceptance was made with a condition "subject to a formal contract". As the acceptance was not absolute and unconditional, it was deemed invalid. Similarly, in UBA v. Tejumola and Sons (1988), the appellant's request for a lease was made "subject to contract", and the court held that the presence of this phrase indicated a conditional acceptance.
The unqualified acceptance clause ensures that both parties are in clear agreement on the terms, preventing misunderstandings and disputes over whether a contract has been validly formed. If there are any alterations made to the original offer, it becomes a counter-offer, and the original offer is nullified. This is known as the mirror-image rule, where acceptance reflects the terms of the offer without any modifications or additional conditions.
It is important to note that the acceptance must be communicated to the offeror for it to take effect. This communication must be done within a reasonable time frame, either specified in the offer or determined by the circumstances.
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Acceptance must be communicated
For a contract to be formed, an offer must be accepted. However, acceptance must meet certain criteria to be valid. Firstly, acceptance must be unequivocal, meaning it must be a definite, documented approval with no conditions or exceptions. Secondly, acceptance must correspond with the terms of the original offer; changing the terms constitutes a counter-offer.
Acceptance must also be communicated to the offeror. This is usually a requirement for an acceptance to take effect, as demonstrated in the case of Entores Ltd v Miles Far East Corporation (1955). In this case, Lord Denning explained that if A shouts an offer to B, but aircraft noise prevents A from hearing B's acceptance, the acceptance cannot take effect until it is communicated. This principle ensures that people are not bound by a contract without their knowledge. However, there are exceptions to this rule, as unilateral contracts do not typically require acceptance to be communicated.
In the case of Felthouse v Bindley (1862), the offeror exposed themselves to the risk of unknowingly incurring an obligation by stating that silence would indicate acceptance. This meant that the offeree could have sued the offeror if they had refused to purchase the horse after the offeror kept it out of sale. Nonetheless, it is important to note that silence is usually not considered acceptance, even if the offeror states that it is.
The method of communication may also be specified in the offer, as seen in the case of Brinkibon v Stahag Stahl, where an email sent at 18:00 was considered effective acceptance as it was within working hours and available to be read upon receipt. Proper dispatch, including addressing, packaging, and posting, is also crucial for acceptance to be effective.
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Acceptance must be in the same terms as the offer
For an offer to be legally binding, it must contain the key terms of the contract. For example, in some jurisdictions, a minimum requirement for sales contracts is a delivery date, price, terms of payment, and a detailed description of the item on offer. An offeror may also specify a method of acceptance (e.g. by post or fax).
Acceptance must be unequivocal and unqualified, and it must correspond with the terms of the offer. This is known as the "mirror image rule", where acceptance must be absolute and without modifications; otherwise, it is considered a counter-offer that nullifies the original offer.
The acceptance must be communicated to the offeror, and it takes effect once it reaches the offeror. This can be done through express or explicit acceptance, where the offeree provides an affirmative statement, or through implied acceptance, where the offeree performs a specific action to imply their acceptance.
In some cases, acceptance may take effect without being communicated to the offeror. For example, in the case of Felthouse v Bindley (1862), it was ruled that silence could be taken as acceptance if the offer stated or implied that acceptance need not be communicated.
The UCC (Uniform Commercial Code) states that "an offer to make a contract shall be construed as inviting acceptance in any manner and by any medium reasonable in the circumstances", allowing for flexibility in the method of acceptance.
Overall, for a contract to be legally enforceable, it must include six essential elements: offer, acceptance, awareness, consideration, capacity, and legality.
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Acceptance must be unconditional
For a contract to be formed, an offer must be accepted. However, acceptance must be unequivocal and unqualified—it must be a definite, documented approval without any conditions or exceptions. In other words, the acceptance must correspond with the terms of the offer. Changing the terms of an offer constitutes a counter-offer.
For example, in the case of Butler Machine Toot Ltd v Ex-Cell-O Corp (England) Ltd (1979), the Court of Appeal held that the buyers' reply to the quotation was not an unconditional acceptance and therefore constituted a counter-offer.
The acceptance must also be communicated to the offeror. In Entores Ltd v Miles Far East Corporation (1955), Lord Denning explained that if A shouts an offer to B, but aircraft noise prevents A from hearing B's acceptance, there is no contract until A knows that B is accepting the offer. Silence is usually not considered acceptance, even if the offeror states that it is.
Acceptance can be express or explicit, where the offeree provides an affirmative statement of acceptance, or implied, where the offeree performs a specific action to imply their acceptance. While implicit acceptance does not have the same legal status as explicit acceptance, it may still be enforceable under certain circumstances.
In conclusion, for an acceptance to be valid, it must be unconditional, mirroring the terms of the offer, and communicated to the offeror.
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Frequently asked questions
Unequivocal acceptance is a definite, documented approval of an offer that contains no conditions or exceptions.
There are several rules of unequivocal acceptance, including:
- Mirror Image Rule: The offeree must accept the exact terms of the offer.
- Silence as Acceptance: Silence is usually not considered acceptance, even if the offeror states that it is.
- Acceptance-upon-dispatch rule: Acceptance is effective when it is dispatched, even if it is lost in transmission.
A contract is considered legally enforceable when it includes six essential elements: offer, acceptance, awareness, consideration, capacity, and legality.
Acceptance is communicated through express or explicit acceptance, where the offeree provides an affirmative statement, or through implied or implicit acceptance, where the offeree performs an action to imply their acceptance.
























