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  • Sep 12,2026

Contract Act, Section 22

Contract Act, Section 22: Contract Caused by Mistake of One Party as to a Matter of Fact

Section 22 of the Indian Contract Act, 1872 provides that a contract is not voidable merely because one party alone is under a mistake of fact, unlike Section 20 which applies where both parties share a mutual mistake.

The section emphasizes that a contract remains valid if there is free consent and the other party has not caused the mistake, thereby promoting certainty and stability in contractual relationships.

1. Purpose of Section 22

The primary objective of Section 22 is to preserve the certainty and enforceability of contracts where only one party is mistaken about a matter of fact.

Section 22 limits the legal effect of unilateral mistakes to maintain certainty and reliability in contractual and commercial transactions.

2. Meaning of Unilateral Mistake

A unilateral mistake arises when only one contracting party is mistaken about a fact relating to the agreement, while the other party is aware of the true position or is not under the same mistaken belief.

Unlike a bilateral mistake involving both parties, a unilateral mistake affects only one party's understanding of the transaction, and its legal effect is governed by Section 22.

3. Difference Between Bilateral and Unilateral Mistake

A fundamental distinction exists between bilateral and unilateral mistakes, as Section 20 makes an agreement void when both parties are mistaken about an essential matter of fact.

In contrast, Section 22 provides that a contract ordinarily remains valid where only one party is mistaken, since the absence of a common mistake does not make it voidable.

4. Why a Unilateral Mistake Does Not Normally Affect a Contract

The law gives greater importance to the objective manifestation of consent than to the undisclosed thoughts or mistaken assumptions of an individual party.

Where a mistaken belief is neither induced by the other party nor shared by both parties, the contract remains binding, promoting certainty and encouraging reasonable care before entering into contractual obligations.

5. Importance of Certainty in Contract Law

Commercial transactions require predictability and confidence so that businesses and individuals can rely on agreements without fear of unilateral mistakes affecting their validity.

Section 22 reinforces this principle by ensuring that unilateral mistakes do not ordinarily disturb valid contracts, thereby promoting commercial stability and reducing unnecessary litigation.

6. Relationship with Free Consent

Although Section 22 deals with unilateral mistakes of fact, it must be read along with Section 14 of the Indian Contract Act, which governs free consent.

Where a unilateral mistake is caused by fraud, coercion, misrepresentation, or undue influence, Section 22 does not apply because the consent is no longer regarded as free.

7. Circumstances Where the Rule Does Not Apply

Section 22 lays down the general rule that a unilateral mistake does not make a contract voidable, but other provisions of law may still affect the validity of the agreement.

Where the mistake relates to the identity of a party, the nature of the transaction, or results from fraud or misrepresentation, the contract may be examined under the relevant provisions governing contractual consent.

8. Balance Between Fairness and Commercial Certainty

Section 22 reflects a careful balance between protecting individual parties and maintaining certainty in contractual relationships despite the possibility of unilateral mistakes.

By limiting the legal effect of such mistakes while preserving remedies in cases of fraud, misrepresentation, and other defects in consent, the provision promotes confidence in contractual dealings.

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