The doctrine of impossibility of contract occupies a central position in contract law.It is as a legal response to non-performance of a contract on account of impossibility that renders contractual obligations incapable of performance. Under Indian law,impossibility finds statutory grounding in both Section 32 and Section 56 of the Indian Contract Act, 1872. 

Though often conflated, these provisions operate under different scenarios. This article seeks to crystallize the  scope of these two provisions with reference to authoritative case laws and to delineate the circumstances under which one would prevail over the other.

Section 32: Contingent Contracts

Section 31 deals with contingent contracts. Section 32 in its second part renders a contract void if the contingency become impossible to perform. It states:

“If the event on which a contract is contingent becomes impossible, such contract becomes void.”

Here, the parties explicitly agree that the performance of their obligations is conditional upon the happening or non-happening of an event. When such an event becomes impossible, the contract does not fail unexpectedly but fails as per the agreed terms.

Illustration: A contracts to sell his house to B if he wins a litigation concerning the house. The litigation is lost. The contract becomes void.

In Satyabrata Ghose v. Mugneeram Bangur & Co. (1954 SCR 310), the Supreme Court acknowledged that contracts containing express terms about possible impossibility are governed by Section 32. In that case, the contract was made contingent on the completion of development work. The Supreme Court noted that if such a contingency failed, the contract would stand void under Section 32 rather than Section 56.

Section 32 thus includes an event which is within the contemplation of the party and the possibility or impossibility is also with the parties anticipation and built into the contractual framework.

Section 56: Doctrine of Frustration

In contrast, Section 56operates in the realm of a supervening impossibility. It reads:

“A contract to do an act which, after the contract is made, becomes impossible, or by reason of some event which the promisor could not prevent, becomes unlawful, becomes void when the act becomes impossible or unlawful.”

Unlike Section 32, which relies on pre-agreed conditions, Section 56 is invoked when no such express clause exists and unforeseen events make performance impossible or unlawful.

The doctrine has its genesis in common law, notably the case of Taylor v. Caldwell [(1863) 3 B & S 826], where a music hall rented for concerts was accidentally destroyed by fire. The court held that the contract was frustrated due to impossibility of performance, although no express clause covered such a situation.

In Indian jurisprudence, Satyabrata Ghose remains the cornerstone case for the interpretation of Section 56. The Court held that the word “impossible” under Section 56 does not only refer to physical or literal impossibility but includes practical impossibility such as a situation where the purpose of the contract is frustrated.

Doctrine of Frustration (Section 56) vs Force Majeure (Section 32)

Force majeure clauses are typically embedded in commercial contracts to allocate risks arising from unforeseen events. These clauses often mirror the legal position under Section 32—when a specific event occurs (war, natural disaster, governmental action, etc.), performance is excused or suspended.

In South East Asia Marine Engineering and Constructions Ltd. v. Oil India Ltd. [(2020) SCC OnLine SC 451], the Supreme Court observed that when a contract contains a force majeure clause, the issue of frustration must be analyzed through the prism of Section 32, not Section 56. If the clause accounts for the event in question, recourse to Section 56 is unnecessary.

Hence, force majeure clauses operate within Section 32, while Section 56 acts as a gap-filler where no such clause exists.

This distinction was elaborated in Energy Watchdog v. CERC [(2017) 14 SCC 80], where the Supreme Court clarified that if a contract makes provisions for certain contingencies, frustration cannot be pleaded. The doctrine of frustration under Section 56 applies only where the contract does not anticipate the event and provide for its consequences.

A wrong choice can prove fatal to a client’s case. In Industrial Finance Corporation v. The Cannanore Spinning & Weaving Mills [AIR 2002 SC 1841], the Court criticized the hasty invocation of Section 56 when the contract already had detailed clauses governing non-performance due to external events.

Situations which impact performance drastically are notl impossibility

An interesting nuance arises in cases where performance is not wholly impossible but is rendered extremely difficult or commercially burdensome. Indian courts have generally taken a conservative approach in expanding the doctrine of frustration.

In Alopi Parshad v. Union of India [AIR 1960 SC 588], the Supreme Court held that commercial hardship or escalation in cost does not frustrate a contract under Section 56.

Similarly, in Naihati Jute Mills v. Khyaliram Jagannath [(1968) 1 SCR 821], the Court ruled that mere increase in price or difficulty of performance does not constitute impossibility under Section 56.

However, in Delhi Development Authority v. Kenneth Builders & Developers (2016 (13) SCC 561), the Supreme Court rejected the argument of frustration. It said frustration under Section 56 applies only when performance becomes impossible due to an event beyond the control of either party, without the fault of the party claiming frustration. Here, the Court found that delays by DDA in giving site possession may amount to a breach- but it does not automatically frustrate the contract.

Consequence

When a contract becomes void under Section 56, Section 65 of the Indian Contract Act applies, which mandates restitution of benefits received under a void agreement. In contrast, when a contract fails under Section 32, it ceases in terms of its own logic and mutual consent.

In the National Agricultural Coop. Mktg. Federation v. Gains Trading [(2007) 5 SCC 692], the Supreme Court underscored that restitution must be ensured where frustration extinguishes a contract under Section 56.

Conclusion

Basis	Section 32	Section 56
Nature of Contract	Contingent on future event	Absolute obligation frustrated by supervening event
Source of Impossibility	Anticipated by contract, thus internal	Unanticipated and external
Voidness	Void when contingency fails	Void due to impossibility or illegality post-contract
Operation	Prospective	Retrospective
Legal Framework	Parties agree to consequences	Doctrine applied by law

Understanding this distinction is critical, especially in an era of global disruptions, regulatory upheaval, and frequent invocation of force majeure. 

When to plead Section 32 and when to plead Section 56 is a strategic consideration basis the contractual clauses. Legal practitioners must carefully evaluate the contractual text before invoking frustration. If the event in question falls within the scope of an agreed clause, then Section 32 must be relied upon. Where no such provision exists, Section 56 may be used as a legal doctrine.

Footnotes

 

1. 1. Satyabrata Ghose v. Mugneeram Bangur & Co., AIR 1954 SC 44.

1. 1. Taylor v. Caldwell, (1863) 3 B & S 826.

1. 1. Energy Watchdog v. Central Electricity Regulatory Commission, (2017) 14 SCC 80.

1. 1. Alopi Parshad & Sons Ltd. v. Union of India, AIR 1960 SC 588.

1. 1. South East Asia Marine Engineering v. Oil India Ltd., (2020) SCC OnLine SC 451.