Drafting, Pleadings and Appearances · Commercial Contract Management

Contingent Contracts: Sections 31 and 53 Explained

Updated 11 October 2026 · Fact-checked

A contingent contract is a contract to do or not to do something if an event collateral to the contract does or does not happen (Section 31). To solve a question, find the event, check it is collateral and uncertain, apply the enforcement rule, and check whether a party prevented it (Section 53).

Understand Contingent Contracts (Sections 31 and 53)

Some promises depend on something else happening. You promise to pay a sum only if a building is burnt, a licence is granted or a ship returns. The promise is not unconditional. It is tied to an event. Section 31 calls this a contingent contract.

The Act defines it as a contract to do or not to do something, if some event, collateral to such contract, does or does not happen. Collateral means the event is outside the contract itself. It is not the promise being made and not the act of performing it. The statutory illustration: A contracts to pay B Rs. 10,000 if B's house is burnt. The burning is the event. The payment is the promise.

The contract itself is formed at once. What waits is the duty to perform. Sections 32, 33 and 35 say when the promise can be enforced. A contract that depends on an event happening cannot be enforced until the event happens. If that event becomes impossible, the contract is void. A contract that depends on an event not happening can be enforced once the event becomes impossible.

Section 53 deals with a different problem: one party stops the other from performing. In a contract with reciprocal promises, if one party prevents the other from performing, the contract becomes voidable at the option of the party prevented. That party can also claim compensation for any loss caused by the non-performance. This matters in contingent contracts because a party may try to stop the event from happening to escape its own promise.

A contingent contract is not a wager. Under Section 30, a wager is void and no suit lies to recover what is won. In a wager, the parties' only interest is the stake riding on an uncertain event. In a contingent contract such as insurance or indemnity, the promisee typically has a real interest in the event. Do not say that every contract depending on an uncertain event is void. Test whether it is a wager or a contingent contract on the facts.

Key rules to remember

Contingent contract (Section 31): Contingent contract = promise to do or not do something + if a collateral event does or does not happen; The event must be collateral to the contract and uncertain. Quote the words of the section.
Event happening (Section 32): Enforceable only after the event happens; void if the event becomes impossible; Example: pay B if B marries C. If C dies unmarried to B, the contract is void.
Event not happening (Section 33): Enforceable when the happening of the event becomes impossible, and not before; Example: pay if the ship does not return. Enforceable when the ship is sunk.
Fixed time (Section 35): Event within a fixed time: void if it has not happened by expiry or becomes impossible earlier. Event not within fixed time: enforceable on expiry or once it is certain it will not happen; Read the time limit in the facts. It changes the answer.
Prevention (Section 53): Reciprocal promises + one party prevents the other = contract voidable at the option of the prevented party + compensation for loss; The option belongs only to the party prevented, not to the party who prevented.
Impossible event (Section 36): Contingent agreement on an impossible event happening is void, whether or not the parties knew of the impossibility; Example: pay if two straight lines enclose a space.
Wager (Section 30): Wager agreement = void; no suit to recover winnings; Contrast with a contingent contract where the event is collateral and the promisee has a real interest.

How to solve Contingent Contracts (Sections 31 and 53) questions

Use this method for any case-based question on contingent contracts. Write each step under a short heading so the examiner sees provision, analysis and conclusion.

1Identify the promise and the event. Write both in one line each.
2Test the definition in Section 31: is the event collateral to the contract, and is it uncertain? If the event is the promise itself, it is not contingent.
3Check for a wager (Section 30). Ask whether the parties have any interest in the event beyond the stake. If not, the agreement is void.
4Classify the event: does it have to happen, or not happen? Is there a fixed time? Pick Section 32, 33 or 35 accordingly.
5Check the status of the event today: has it happened, become impossible, or is it still open? State whether the contract is enforceable, void or still waiting.
6Check for prevention. Are there reciprocal promises, and did one party stop the other from performing? Apply Section 53.
7State the remedy: enforcement, voidness, or the option to rescind with compensation for loss.
8Add a practical drafting point if asked: define the event, set a long-stop date and state what happens if the event fails.

Quickest way: Four-question check

When to use it: Use when you have little time on a short fact-based question.

Event: what is it, and is it collateral and uncertain?
Direction and time: must it happen or not happen, and by when?
Status: has it happened, become impossible or is it still open?
Interference: did anyone prevent performance? If yes, Section 53 gives the prevented party the option to rescind and claim compensation.
Write the conclusion in one sentence with the section number.

Common mistakes in Contingent Contracts (Sections 31 and 53)

Treating any conditional promise as a contingent contract.
Students stop at the word 'if' in the facts.
Fix: Check that the event is collateral. If the condition is part of the promise's own performance, it is not contingent under Section 31.
Saying a contingent contract is not a contract until the event happens.
Students confuse formation with enforcement.
Fix: Say the contract exists from the start, but it cannot be enforced until the event happens (Section 32).
Calling every contingent contract a wager and void.
Both depend on an uncertain event.
Fix: Contrast them: a wager is void under Section 30. In a contingent contract the event is collateral and the promisee generally has a real interest, as in insurance or indemnity.
Giving the Section 53 option to the party who prevented performance.
Students read 'voidable' loosely.
Fix: Only the party prevented can avoid the contract and claim compensation for loss.
Ignoring the fixed time in the facts.
Students apply Section 32 or 33 and skip Section 35.
Fix: Underline any time limit. If the event is tied to a fixed time, apply Section 35.
Applying Section 53 to a contract without reciprocal promises.
Students remember only the word 'prevents'.
Fix: State that the contract must contain reciprocal promises before Section 53 applies.

Worked examples

Example 1

Anil Traders agrees to pay Meera Logistics ₹2,00,000 if a particular consignment of Meera's goods is destroyed by fire in transit. Meera has no goods in that consignment and is not exposed to the loss. Anil also agrees to pay ₹50,000 to Rohit if a named warehouse is not burnt before 31 March. Rohit owns the stock in that warehouse. Comment on the nature of the two agreements.

Show the solution

Both promises depend on an uncertain event, fire. The event is outside the promise to pay, so it is collateral.
Section 31 defines a contingent contract as one to do or not do something if a collateral event does or does not happen. The statutory illustration is a promise to pay if a house is burnt.
First agreement: the fact that Meera has no goods in the consignment suggests she has no interest beyond the stake. If the only purpose is gain or loss on the uncertain event, it is a wager. Section 30 makes it void and no suit lies to recover anything claimed.
Second agreement: the event is a fire at a warehouse where Rohit holds stock, so he has a real interest. It is a contingent contract. Under Section 35, a contract contingent on an event not happening within a fixed time can be enforced once the time expires without the event, or earlier if it becomes certain the event will not happen.
Hence, if the warehouse is not burnt by 31 March, Rohit can enforce the promise.

Answer: The first agreement is a wager and void under Section 30. The second is a contingent contract that becomes enforceable under Section 35 if the warehouse is not burnt by 31 March.

Example 2

Sunita Constructions agrees to build a boundary wall for Vikram for ₹1,00,000. Sunita is ready and willing to build it. Vikram locks the site and refuses her entry. Advise Sunita.

Show the solution

The contract has reciprocal promises: Sunita builds the wall and Vikram pays the price.
Vikram has prevented Sunita from performing her promise by locking the site.
Section 53 says that where one party prevents the other from performing in a contract with reciprocal promises, the contract becomes voidable at the option of the party prevented.
The option is Sunita's, not Vikram's. She may treat the contract as ended.
If she rescinds, she is entitled to compensation from Vikram for any loss she sustains because the contract was not performed. The Act's footnote refers to Section 73 for the measure of compensation.
Practical point: she should record her readiness and willingness in writing, give notice of the obstruction and keep a record of costs incurred.

Answer: Sunita can, at her option, avoid the contract under Section 53 and recover compensation from Vikram for the loss caused by non-performance.

Exam tips

Begin with the Section 31 definition in the Act's own words, then apply it to the facts. Examiners reward provision first, then analysis.
Always run the wager test when the facts mention betting, stakes or uncertain events with no real interest.
Underline any time limit in the facts and decide between Sections 32, 33 and 35.
In Section 53 answers, state the option and the compensation separately, and say whose option it is.
Where asked about drafting, mention a clearly defined event, a long-stop date and the consequence if the event does not occur.

Practice questions from Commercial Contract Management

Contingent Contracts (Sections 31 and 53) in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Contingent Contracts (Sections 31 and 53): frequently asked questions

What is a contingent contract under Section 31?

It is a contract to do or not to do something if some event collateral to the contract does or does not happen. The statutory example is a promise to pay Rs. 10,000 if B's house is burnt. The event is outside the promise itself.

What is the difference between a contingent contract and a wager?

A wager is void under Section 30 and no suit lies to recover winnings. A contingent contract is valid but enforceable only when the event position allows. In a typical contingent contract, such as insurance, the promisee has a real interest in the event. In a wager, the stake on the uncertain event is the whole point.

What does Section 53 say about a party who prevents performance?

Where a contract has reciprocal promises and one party prevents the other from performing, the contract is voidable at the option of the party prevented. That party can also claim compensation for any loss from non-performance.

Is a contingent contract valid before the event happens?

Yes, the contract exists from the start. But a contract contingent on an event happening cannot be enforced until the event has happened (Section 32). If the event becomes impossible, the contract is void.