Estoppel stops a person from going back on what they said or did when another has relied on it. Learn types, Section 115 and key Indian cases.
In one sentence: Estoppel is a rule that prevents a person from denying or contradicting something they earlier said or did, when another person has relied on it and would be harmed if it were now disowned.
What does it mean?
The word comes from the Old French estopper, meaning “to stop up” or “to block”. Estoppel blocks a person from taking a position that is inconsistent with what they previously represented, where someone else has acted on that representation.
It rests on fairness. A person should not be allowed to lead another to rely on a statement or conduct and then turn around and deny it to that person’s loss.
What does Indian law say?
Estoppel by representation is governed by Section 115 of the Indian Evidence Act, 1872, now Section 121 of the Bharatiya Sakshya Adhiniyam, 2023. In substance, it requires that:
- One person, by a declaration, act or omission, intentionally caused or permitted another to believe something to be true.
- The other person acted on that belief.
- Neither of them can later deny the truth of that thing in a suit or proceeding between them.
A simple example
- A landowner tells a buyer that the plot is free of any claim and allows the sale to go ahead.
- The buyer pays and builds on the plot, relying on that assurance.
- Later, the landowner tries to claim the plot is subject to a claim after all.
The landowner may be estopped from taking that position, because the buyer relied on the earlier assurance and would suffer if it were now withdrawn.
Main types of estoppel
- Estoppel by representation: based on a statement or conduct that another person relied on. This is what Section 115 deals with.
- Promissory estoppel: where a party makes a clear promise, intending it to be acted on, and the other party acts on it. The promise can then be enforced to the extent needed to prevent injustice, even without a formal contract.
- Estoppel by record: a party is bound by a final judgment and cannot reopen what was decided. It is closely linked to res judicata.
- Estoppel by deed: a person who signs a deed is generally bound by the facts it recites.
Promissory estoppel and the government
Indian courts have applied promissory estoppel even against the State. Where a government authority makes a promise intending it to be relied on, and a citizen acts on it, the government may be held to its word.
There are limits. Courts have held that the doctrine cannot override the public interest, and it cannot be used to compel the government to act against a statute or to do something it has no power to do.
Estoppel is not a cause of action
In its traditional form, estoppel is a rule of evidence and a defence, often described as a shield and not a sword. It prevents a person from denying something, but does not by itself create a new right to sue. Promissory estoppel in India has been given a wider reach than this, as the cases below show.
Leading cases
- Pickard v. Sears (1837) (England): The classic statement that a person who by words or conduct causes another to believe in a state of things cannot later deny it.
- Central London Property Trust Ltd. v. High Trees House Ltd. [1947] KB 130 (England): Established the modern doctrine of promissory estoppel.
- Union of India v. Anglo Afghan Agencies, AIR 1968 SC 718: The Supreme Court applied promissory estoppel against the government.
- Motilal Padampat Sugar Mills Co. Ltd. v. State of U.P., (1979) 2 SCC 409: The leading Indian case on promissory estoppel against the State, holding that it does not depend on proof of detriment in the strict sense and that it can be the basis of a claim.
- Kasinka Trading v. Union of India, (1995) 1 SCC 274: Promissory estoppel cannot be invoked where doing so would run against the public interest.
Common misunderstandings
- “Any inconsistency creates an estoppel.” It does not. There must be a representation, reliance on it and a resulting change in position.
- “Estoppel lets you ignore the law.” Generally it cannot. Estoppel does not override a statute, and it cannot validate something the law forbids.
- “Estoppel and waiver are the same.” They are related but distinct. Waiver is the voluntary giving up of a known right. Estoppel arises from another person’s reliance.
Estoppel and related terms
- Res judicata: a final decision cannot be reopened between the same parties.
- Waiver: the voluntary surrender of a known right.
- Acquiescence: accepting a situation by silence or conduct.
- Ratio decidendi: the binding reasoning of a decision.
The takeaway
Estoppel keeps people consistent. If you cause someone to rely on what you said or did, the law may not let you take it back to their harm. Used well, it is a strong protection for those who acted in good faith on someone else’s assurance.
