Equitable and Promissory Estoppel — BSA (Law of Evidence) Notes

Equitable and Promissory Estoppel

During the Second World War, a London landlord promised his tenant a reduced rent because the flats stood half-empty in the Blitz. When the war ended and the flats filled again, he tried to claw back the full rent for the whole war period. Lord Denning, in Central London Property Trust vs High Trees House (1947), stopped him: a promise meant to be acted on, and in fact acted on, binds the promisor — even though the tenant gave nothing in return. That is promissory estoppel, the modern, forward-looking cousin of ordinary estoppel.

Ordinary estoppel (Topic 6) works on a representation of an existing fact. But what if the representation is a promise about the future — “I will charge you less”, “I will grant you this concession”? Classic estoppel could not reach it, and contract law demanded consideration (something given in return). Promissory (equitable) estoppel fills the gap.

The rule. Where one party makes a clear and unequivocal promise intended to create legal relations or affect a legal relationship, knowing or intending that the other will act on it, and the other does act on it and alters his position, the promisor is not allowed to go back on the promise — even though there was no consideration for it. It is judge-made equity, not a section of the Adhiniyam, though it sits naturally beside s. 121.

Its features, each an exam line:

No consideration needed. This is the whole point — it binds a gratuitous promise, escaping the contract-law requirement of consideration.
A shield historically, but in India also a limited sword. In England it was defensive only; Indian courts have allowed it as a basis of relief against the Government (below), so its edge is sharper here.
It binds the Government. In India promissory estoppel applies against the State and its instrumentalities where a citizen has acted on a governmental assurance — a major departure from the old rule that there is no estoppel against the Crown.

The two limits that answer every problem:

No estoppel against a statute. The doctrine cannot compel anyone — least of all the Government — to do something the law forbids, or to ignore a statutory duty. A promise contrary to statute is not enforced.
Public interest override. The Government may resile from its promise if it shows that the public interest requires it; the court balances the citizen’s reliance against the wider public good.

🧩 WORKED EXAMPLE — the withdrawn tax holiday

Facts. A State issues a press notice promising a three-year exemption from sales tax to anyone who sets up a new industry. Relying on it, an entrepreneur borrows heavily and builds a sugar mill. The State then withdraws the exemption before the three years are up.

Rule. A clear promise, intended to be acted on and in fact acted on, binds the promisor — including the Government — even without consideration (promissory estoppel), subject to statute and overriding public interest.

Apply. The State made an unequivocal promise; the entrepreneur altered his position (borrowed and built) in reliance on it. The State is therefore estopped from withdrawing the exemption arbitrarily. It can escape only by showing an overriding public interest, or that the exemption was contrary to a statute.

Conclusion. Absent such justification, the entrepreneur is entitled to hold the State to its three-year promise.

Variant. If the promised exemption had actually violated the tax statute, there would be no estoppel — the doctrine never operates against a statute.

Lord Denning in Central London Property Trust vs High Trees House (1947): “A promise intended to be binding, intended to be acted on, and in fact acted on, is binding so far as its terms properly apply.”

In Simple Terms: A promise meant to be relied on, and actually relied on, sticks — even with nothing given in return. In India it holds the Government to its word too, unless keeping the promise would break a statute or genuinely harm the public interest.

flowchart TD
    ROOT["Promissory / equitable estoppel"]:::root
    ROOT --> A["Clear, unequivocal PROMISE<br/>about future conduct"]:::leaf
    A --> B["Intended to be acted on"]:::leaf
    B --> C["Promisee ACTS on it,<br/>alters his position"]:::leaf
    C --> D["Promisor bound —<br/>NO consideration needed<br/>binds Government too"]:::leaf
    D --> LIM["Limits: no estoppel against a statute;<br/>overriding public interest"]:::diamond
    classDef root fill:#FFF8DC,stroke:#000,stroke-width:1px,color:#000;
    classDef leaf fill:#E6F3FF,stroke:#1E3A8A,color:#000;
    classDef diamond fill:#FDECEA,stroke:#B22222,color:#000;
    linkStyle default stroke:#888,stroke-width:1px;

Case Laws

Central London Property Trust vs High Trees House (1947) — Lord Denning revived the doctrine: a promise intended to be acted on and acted upon binds the promisor despite the absence of consideration.
Union of India vs Anglo Afghan Agencies (1968) — the Government was held bound by its export-promotion scheme assurances on which the exporter had acted; promissory estoppel applies against the State.
Motilal Padampat Sugar Mills vs State of U.P. (1979) — the leading Indian authority: the State was estopped from resiling from a promised tax exemption acted upon by the industry; but the doctrine yields to statute and to overriding public interest, and there is no estoppel against a statute.
Union of India vs Godfrey Philips India Ltd. (1985) — reaffirmed that promissory estoppel binds the Government but cannot be used to compel an act contrary to law.

📄 Full notes + Question Bank (₹199) — every topic in depth, model answers to all past KSLU questions, in one printable PDF. Get the bundle · 10 Solved Problems · All BSA (Law of Evidence) topics