Section4
The Indian Contract Act, 1872

Communication when complete

In force From 01 Sep 1872 Act 9 of 1872 As on 14 Oct 2026

Act 9 of 1872 Ministry Law and Justice Enacted 25 Apr 1872 In force 01 Sep 1872

Section 4 of the Indian Contract Act, 1872 deals with communication when complete. The communication of a proposal is complete when it comes to the knowledge of the person to whom it is made. The Act came into force on 01 Sep 1872.

The communication of a proposal is complete when it comes to the knowledge of the person to whom it is made.

The communication of an acceptance is complete,

as against the proposer, when it is put in a course of transmission to him, so as to be out of the power of the acceptor;

as against the acceptor, when it comes to the knowledge of the proposer.

The communication of a revocation is complete,

as against the person who makes it, when it is put into a course of transmission to the person to whom it is made, so as to be out of the power of the person who makes it;

as against the person to whom it is made, when it comes to his knowledge.

Illustrations

(a) A proposes, by letter, to sell a house to B at a certain price.

The communication of the proposal is complete when B receives the letter.

(b) B accepts As proposal by a letter sent by post.

The communication of the acceptance is complete,

as against A when the letter is posted;

as against B, when the letter is received by A.

(c) A revokes his proposal by telegram.

The revocation is complete as against A when the telegram is despatched. It is complete as against B when B receives it.

B revokes his acceptance by telegram. Bs revocation is complete as against B when the telegram is despatched, and as against A when it reaches him.

Section 4, The Indian Contract Act, 1872 (Act 9 of 1872).

Related judgements & precedents

These are some judgments that construed this section, and hold precedence value. They hold authority on how to read, interpret and use this section.

  1. Trimex International Fze Ltd. Dubai vs Vedanta Aluminium Limited, India

    Supreme Court of India 22 Jan 2010 Binding (SC) - Landmark Precedent Reportable Unreported

    Court's Decision & Legal Precedent

    When parties exchange emails containing a commercial offer with an arbitration clause and the offeree sends an email with clear, unconditional language accepting the material terms of the offer ('we confirm the deal for 5 shipments'), a valid and binding contract comes into existence at the moment the acceptance email comes to the knowledge of the proposer, even without execution of a formal signed agreement. The arbitration clause contained in the original commercial offer becomes an integral part of this binding contract. An arbitration agreement can be inferred from exchange of emails, correspondence, and other means of telecommunication providing a record of agreement, in accordance with Section 7 of the Arbitration and Conciliation Act, 1996. The doctrine of autonomy of will requires courts to uphold parties' intention to arbitrate and not to defeat such intention by insisting on formalities such as signatures and formal execution when the parties' agreement is otherwise clearly demonstrated through email correspondence. Therefore, upon proof of a validly concluded contract containing an arbitration clause, the court is obligated to appoint an arbitrator in accordance with Section 11(6) of the Arbitration and Conciliation Act, 1996, without delving into the merits of the underlying dispute.

    On this section: Applied to determine when acceptance becomes complete and binding. Court held that acceptance communicated through email comes to the knowledge of proposer when email is opened, making contract binding

    Read the full order on eCourts India

The holding above is the ratio decidendi as extracted from the judgment by eCourts India, reproduced unaltered — it is a rendering of the court's reasoning, not a substitute for its words. Read the order itself before relying on it.

Questions about Section 4

What have the courts held on Section 4 of the Indian Contract Act?

Trimex International Fze Ltd. Dubai vs Vedanta Aluminium Limited, India (22 Jan 2010) is the leading judgment on this section among those set out below: Applied to determine when acceptance becomes complete and binding. Court held that acceptance communicated through email comes to the knowledge of proposer when email is opened, making contract binding.

How do I find court cases under Section 4 of the Indian Contract Act?

In judgments and charge sheets this section is written several ways, and each form finds a different set of orders. These search the full text of every order eCourtsIndia holds, best matches first: Contract Act 4, section 4 Contract Act, section 4 of the Indian Contract Act. People searching for it also type contract law 4 elements. Each opens the full list of orders on eCourtsIndia, where it can be narrowed by court, year and outcome. 1 reported judgment on this section is set out on this page, beginning with Trimex International Fze Ltd. Dubai vs Vedanta Aluminium Limited, India (22 Jan 2010).

When did Section 4 of the Indian Contract Act come into force?

Section 4 of the Indian Contract Act, cited as Contract Act 4, came into force on 01 Sep 1872, having been enacted on 25 Apr 1872. It is in force as at the date shown on this page.

Other sections of this Act

Source and method. Compiled from the enactments of Parliament and of the State legislatures as published on India Code, and republished together with commentary and other original matter under section 52(1)(q)(ii) of the Copyright Act, 1957. Structured, cross-referenced and maintained by eCourtsIndia. Text as in force on 14 Oct 2026. This page is not a substitute for legal advice.