The Indian Contract Act, 1872, enacted on April 25, 1872, is a cornerstone of mercantile law, governing contracts essential to trade, commerce, and industry. Before its implementation, English law applied in Presidency Towns (Madras, Bombay, Calcutta) under the Charter of 1726, with justice, equity, and good conscience guiding decisions elsewhere. The Act codifies principles for legally enforceable contracts, covering essentials of valid contracts and special relationships like indemnity, guarantee, bailment, pledge, quasi-contracts, and contingent contracts.
Per Section 2(h), a contract is "an agreement enforceable by law," comprising:
Agreement: Section 2(e) defines it as "every promise and every set of promises, forming the consideration for each other." A promise, per Section 2(b), is a proposal accepted by the offeree.
Enforceability by Law: An agreement must create a legal obligation. Social agreements, like a father promising pocket money to his son, are not contracts due to a lack of legal intent (e.g., Balfour v. Balfour). Example: A agrees to sell a car to B for ₹2 lakh, creating mutual obligations enforceable by law.
An agreement arises from a proposal and acceptance with consideration, but it becomes a contract only when it is legally enforceable, creating legal obligations. Social or moral agreements (e.g., a promise to pay pocket money) are not contracts due to a lack of legal intent. All contracts are agreements, but not all agreements are contracts.
Contracts are classified based on validity, formation, and performance, with detailed explanations below.
Based on Validity
Based on Formation
Based on Performance
A proposal is when one person signifies willingness to do or abstain from doing something to obtain another’s assent (Section 2(a)). It is the starting point of a contract, expressing intent to create legal relations. It can be positive (doing an act, e.g., selling a car) or negative (abstaining, e.g., not suing for damages). The offeror (promisor) makes the offer to the offeree, who becomes the acceptor (promisee) upon acceptance.
Essentials of a Valid Offer
Acceptance is when the offeree signifies assent to the proposal, converting it into a promise (Section 2(b)). It creates a binding agreement when absolute and communicated properly.
Legal Rules for a Valid Acceptance
Per Section 2(b) of the Indian Contract Act, 1872, acceptance is defined as when the person to whom a proposal is made signifies their assent thereto, converting the proposal into a promise. The following seven legal rules, as outlined in the PDF, ensure a valid acceptance:
The Indian Contract Act, 1872, emphasises the importance of the "time" element in determining when the communication of an offer and acceptance is complete, as outlined in Section 4 and related provisions. Effective communication prevents misunderstandings and avoidable revocations between parties.
Communication of Offer (Section 4): The communication of an offer is complete when it comes to the knowledge of the person to whom it is made. For example, if a proposal is sent by post, it is complete when the offeree receives and reads the letter, not merely when it is delivered.
Communication of Acceptance (Section 4): The communication of acceptance is complete in two stages:
As against the proposer: When the acceptance is put into a course of transmission to the proposer, to be out of the power of the acceptor to withdraw (e.g., when a letter of acceptance is posted).
As against the acceptor: When the acceptance comes to the knowledge of the proposer (e.g., when the proposer receives the letter).
Modes of Communication: Communication can occur through acts, omissions, or conduct. For instance, delivering goods at a price to a willing buyer or boarding a public bus conveys acceptance by conduct. In instantaneous communication (e.g., telephone, fax, or email), the contract is complete only when the acceptance is received by the offeror.
Communication of Special Conditions: Special conditions, such as those printed on tickets (e.g., travel terms), are deemed communicated and accepted upon purchase, even if the offeree is unaware, provided the notice is reasonable.
Communication of Performance (Section 8): When an offer requires performance of a condition as acceptance, the act itself constitutes acceptance. Communication of performance is necessary unless the offer specifies that performance alone suffices. For example, performing an act like delivering goods may not require further communication if the offer allows it.
Section 4 of the Act defines when the communication of a proposal, acceptance, or revocation is complete, which is foundational to understanding revocation timing.
Communication of a Proposal: The communication of a proposal is complete when it comes to the knowledge of the person to whom it is made. For example, a letter of proposal is considered communicated when received and read by the offeree.
Communication of an Acceptance: The communication of an acceptance is complete:
(a) As against the proposer: When it is put into a course of transmission to him, to be out of the power of the acceptor (e.g., when a letter of acceptance is posted).
(b) As against the acceptor: When it comes to the knowledge of the proposer (e.g., when the letter is received by the proposer).
Relevance to Revocation: This section establishes that revocation must occur before the acceptance is complete against the proposer for the offer to be effectively withdrawn, linking it to the timing rules in Section 5.
Section 5: Revocation of Proposals and Acceptances
Section 5 specifies the conditions under which a proposal or acceptance can be revoked, providing the legal framework for termination before a contract is binding.
Revocation of Proposal: A proposal may be revoked at any time before the communication of its acceptance is complete as against the proposer. This means the offeror can withdraw the offer before the acceptance is transmitted (e.g., before the acceptance letter is posted).
Revocation of Acceptance: An acceptance may be revoked at any time before the communication of the acceptance is complete as against the acceptor. This allows the offeree to retract acceptance before it reaches the proposer (e.g., by sending a revocation telegram that arrives before or with the acceptance letter).
Indian Law Perspective: Unlike English law, where acceptance by post is generally irrevocable once posted, Indian law permits revocation of acceptance if the revocation reaches the offeror before or simultaneously with the acceptance, offering greater flexibility to the offeree.
Modes of Revocation (Section 6):
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1. What are the essential elements required for a valid contract? | ![]() |
2. What is the difference between a proposal and an acceptance in contract law? | ![]() |
3. How is the communication of offer and acceptance significant in forming a contract? | ![]() |
4. What does revocation of offer and acceptance mean in contract law? | ![]() |
5. What are the different types of contracts, and how do they differ? | ![]() |