Indian Contract Act 1872 Section 20

Section 20. Agreement void where both parties are under mistake as to matter of fact.—

Where both the parties to an agreement are under a mistake as to a matter of fact essential to the agreement, the agreement is void.

Explanation.—

An erroneous opinion as to the value of the thing which forms the subject-matter of the agreement is not to be deemed a mistake as to a matter of fact.

Illustrations

(a) A agrees to sell to B a specific cargo of goods supposed to be on its way from England to Bombay. It turns out that, before the day of the bargain, the ship conveying the cargo had been cast away and the goods lost. Neither party was aware of these facts. The agreement is void.

(b) A agrees to buy from B a certain horse. It turns out that the horse was dead at the time of the bargain, though neither party was aware of the fact. The agreement is void.

(c) A, being entitled to an estate for the life of B, agrees to sell it to C. B was dead at the time of the agreement, but both parties were ignorant of the fact. The agreement is void.

Explanation of Section 20 Indian Contract Act 1872

Section 20 renders an agreement void if both parties are mistaken about a fact essential to the contract, preventing a true meeting of minds (consensus ad idem).

A mutual mistake about the existence, identity, or quantity of the subject matter voids the agreement from the start, as it lacks a valid basis.

The Explanation clarifies that mistakes about the subject matter’s value (e.g., overpaying) do not qualify as factual mistakes. Unlike voidable contracts, Section 20 agreements are unenforceable, with no remedies like rescission or damages.

Key Points of Section 20 Indian Contract Act 1872

• Scope: Applies to agreements with mutual mistake of fact essential to the contract.
• Void Agreement: Unenforceable from inception, not voidable.
• Mutual Mistake: Both parties must share the same factual error.
• Essential Fact: The mistake must undermine the contract’s core (e.g., subject matter’s existence).
• Value Exclusion: Value-based mistakes are not factual mistakes.
• Burden of Proof: The party alleging the mistake must prove its essentiality.
• No Remedies: Void agreements cannot be enforced or rectified.

Analysis of Illustrations

1. Illustration (a): A and B contract for a cargo believed to be in transit, but it was lost. The mutual mistake about the cargo’s existence voids the agreement, as the subject matter is critical.
2. Illustration (b): A buys a horse from B, unaware it was dead. The mutual mistake about the horse’s existence voids the contract, as it’s the agreement’s basis.
3. Illustration (c): A sells an estate tied to B’s life to C, both unaware B is dead. The mutual mistake about B’s existence voids the agreement, as the estate’s validity depends on it.

Practical Examples

1. Non-Existent Goods: A sells a painting to B, both believing it’s in A’s gallery, but it was destroyed. The agreement is void due to the mutual mistake about the painting’s existence.
2. Mistaken Identity: C buys a rare coin from D, both thinking it’s from 1850, but it’s from 1950. If the year was essential, the contract is void.
3. Non-Existent Property: E leases land from F for mining, both unaware it’s been acquired by the government. The mutual mistake voids the agreement.

Case Laws on Section 20

1. Couturier v. Hastie (1856):
   • Facts: A contract for corn cargo was made, but the cargo was sold due to spoilage, unknown to both parties.
   • Held: The contract was void due to a mutual mistake about the cargo’s existence.
   • Relevance: Mirrors Illustration (a), showing non-existent subject matter voids contracts.
2. Tarsem Singh v. Sukhminder Singh (1998):
   • Facts: A land sale contract was made, but the land was government-acquired, unknown to both parties.
   • Held: The Supreme Court held the agreement void under Section 20.
   • Relevance: Confirms mutual mistakes about subject matter availability void contracts.
3. Strickland v. Turner (1852):
   • Facts: A contract for an annuity was made, but the person whose life it depended on was dead, unknown to both parties.
   • Held: The contract was void due to a mutual mistake.
   • Relevance: Aligns with Illustration (c), emphasizing mistakes about a person’s existence.

RJS-Style MCQs on Section 20

1. Question: Under Section 20, an agreement is void if:
   • A) One party is mistaken about a fact
   • B) Both parties are mistaken about an essential fact
   • C) Both parties are mistaken about the law
   • D) The agreement lacks consideration
   • Answer: B) Both parties are mistaken about an essential fact
   • Explanation: Section 20 voids agreements due to mutual mistake of fact essential to the contract.
2. Question: As per Illustration (a), why is the cargo sale agreement void?
   • A) The parties misjudged the cargo’s value
   • B) Both parties were unaware the cargo was lost
   • C) The contract was not written
   • D) One party misrepresented facts
   • Answer: B) Both parties were unaware the cargo was lost
   • Explanation: Illustration (a) shows a mutual mistake about the cargo’s existence voids the agreement.
3. Question: Per the Explanation of Section 20, which mistake does not void an agreement?
   • A) Mistake about the subject matter’s existence
   • B) Mistake about the subject matter’s value
   • C) Mistake about the subject matter’s quantity
   • D) Mistake about the contract’s terms
   • Answer: B) Mistake about the subject matter’s value
   • Explanation: The Explanation excludes value-based mistakes from factual mistakes.