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  • Oct 19,2026

Contract Act, Section 57

Contract Act, Section 57: Reciprocal Promises to Do Legal Acts and Also Other Illegal Acts

Section 57 of the Indian Contract Act, 1872 governs contracts containing reciprocal promises where one set of promises is lawful and another set, operating under specified circumstances, is unlawful.

The section preserves the validity of lawful promises while treating unlawful promises as void, ensuring that only legally permissible obligations receive enforcement under the law.

1. Purpose of Section 57

The primary objective of Section 57 is to distinguish between lawful and unlawful reciprocal promises contained within the same contractual arrangement.

The provision preserves valid contractual obligations while preventing the enforcement of unlawful promises, ensuring that illegal agreements do not receive legal recognition.

2. Meaning of Reciprocal Promises

Reciprocal promises are promises that constitute the consideration or part of the consideration for one another, where each party undertakes obligations in return for corresponding promises.

Section 57 applies where such reciprocal obligations include both lawful and unlawful promises that operate under different circumstances.

3. First Set of Promises Must Be Lawful

The section first refers to reciprocal promises relating to acts that are entirely lawful, where the promises satisfy the requirements of a valid contract and are free from legal prohibitions.

Such lawful promises create enforceable contractual rights and obligations, which remain protected under the provisions of the Indian Contract Act.

4. Second Set of Promises Must Be Illegal

The section further contemplates another set of reciprocal promises that become operative only upon the occurrence of specified circumstances and require the parties to perform acts that are illegal.

Since the law does not recognize or enforce agreements involving unlawful acts, these promises are treated as void from the beginning and create no enforceable contractual rights or obligations.

5. Effect of the Lawful Promises

Section 57 expressly provides that the first set of lawful reciprocal promises constitutes a valid contract.

Accordingly, the parties remain legally bound to perform those lawful obligations, and either party may enforce them in accordance with the provisions of the Indian Contract Act.

6. Effect of the Illegal Promises

The second set of reciprocal promises involving unlawful acts does not constitute a valid contract, as such promises are void due to illegality or violation of public policy.

Courts will neither enforce these promises nor provide any legal remedy arising from obligations based on unlawful acts.

7. Separation of Lawful and Unlawful Obligations

A significant feature of Section 57 is the separation of lawful and unlawful reciprocal promises, allowing the valid part of an agreement to remain enforceable while rendering only the unlawful promises void.

8. Principle of Severability

Section 57 reflects the doctrine of severability by allowing lawful and separable promises to remain enforceable independently, even when other promises in the contract are unlawful, thereby preserving valid contractual arrangements.

9. Importance of Specified Circumstances

Section 58 provides that unlawful promises remain unenforceable even when they are conditional or dependent on future events, as the legality of the promised act itself determines enforceability rather than the circumstances of performance.

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