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Doctrine of Promissory Estoppel: An Insight into Equity and Fairness


The doctrine of promissory estoppel is deeply rooted in the principles of equity, fairness, and moral conscience. At its core, it ensures that when a person makes a clear and unambiguous promise with the intent of forming a legal relationship, and another individual acts in reliance on that promise, the promisor cannot retract it. This principle enforces the promise, ensuring fairness and preventing injustice. It doesn’t matter whether the promisee suffers harm as long as their position has changed because of the promise.


While the scope of this doctrine is vast, it lacks codified provisions within the Indian Contract Act, leading the Law Commission in its 108th report to propose the inclusion of Section 25A. Estoppel, as codified in Section 115 of the Indian Evidence Act, 1872, supports the principle that a person cannot deny a statement they intentionally made if another individual has relied on it. While Section 115 deals with representations of existing facts, promissory estoppel covers promises about future conduct, making it a broader concept.


Promissory Estoppel: Its Application and Scope

Promissory estoppel, also known as equitable or quasi-estoppel, holds that when a person makes a promise with the intent to create a legal relationship, knowing that the promisee may rely on it, and the promisee does act upon it, the promise becomes binding. The doctrine ensures that the promisor cannot back out, thereby preventing unfairness or injustice to the other party. It is a shield for the promisee against the promisor’s withdrawal, especially when the reliance on the promise has altered the promisee's position.




Key Elements of Promissory Estoppel

For the doctrine to apply, the following five elements are crucial:

  1. Legal Relationship: A lawful relationship between the parties or one that is expected to exist must be present.

  2. Assurance: A clear and reasonable promise must be made, leading the aggrieved party to believe that some action is required.

  3. Reliance: The aggrieved party must have relied on the promise, acting upon it.

  4. Damage: The reliance on the promise should result in some loss or disadvantage to the aggrieved party.

  5. Unconscionability: The promisor’s failure to fulfill the promise must be unjust and lead to unfairness.


The Evolution of Promissory Estoppel in India

In India, the principle of estoppel was initially confined to the law of evidence, as seen in Section 115 of the Indian Evidence Act, 1872. However, with time, courts expanded its application to promises and assurances made by individuals or authorities. Before the formal recognition of promissory estoppel, courts in India had already applied this principle, preventing government bodies or authorities from retracting promises made to individuals or municipalities when these promises led to significant action.

One of the landmark cases, UOI vs. Anglo Afghan Agencies, highlighted the application of promissory estoppel. Here, the government had promised certain import benefits under a scheme, and the petitioner, relying on that promise, acted upon it. Despite the government’s defense of official necessity, the Supreme Court ruled that the government could not back out of its promise, as the petitioner had altered its position in reliance on it. This case became a cornerstone for the doctrine in India.


Promissory Estoppel in Contractual Relationships

Promissory estoppel applies even in the absence of a formal, concluded contract. For example, if a party acts based on a promise or assurance from another, the doctrine may apply, even if the formal terms of a contract aren’t fulfilled. It has been invoked in cases where banks altered agreements, government authorities modified contracts, or businesses changed terms based on reliance on assurances. It has also been used to prevent authorities from changing allocation plans or withholding promised refunds, even when the formal agreements stated otherwise.


Exceptions to the Doctrine of Promissory Estoppel

The doctrine, while a powerful tool, is not without its limitations. Some of the exceptions where promissory estoppel may not apply include:

  1. Public Interest: If the government can demonstrate that the promise conflicts with public interest, the courts may allow the government to back out. The burden of proving such overriding public interest rests with the government.

  2. Legislative Power: The doctrine cannot compel the government to act beyond its statutory powers. If a promise violates legal statutes or is beyond the promisor’s authority, it cannot be enforced.

  3. Administrative Actions: Promissory estoppel cannot prevent the government from exercising administrative authority or from enforcing laws that may override previous promises.

  4. Impossibility or Unfairness: In extraordinary circumstances, where fulfilling the promise becomes impossible or unjust, the promisor may be excused from their obligations.



Landmark Judgment: A Case Study

In one notable case, the government of Uttar Pradesh announced tax exemptions for new industrial units in the state. Relying on this promise, the petitioner sought clarification from authorities, borrowed money, and established a manufacturing unit. However, the government later retracted the full exemption and offered only limited concessions. The petitioner, having already invested heavily based on the government’s promise, sued the government under the doctrine of promissory estoppel.


The Supreme Court held that the government’s clear assurances had led the petitioner to alter his position significantly. As such, the government was bound by its promise, and it could not withdraw its words, as it would result in injustice to the petitioner. This case reinforced the doctrine’s role in ensuring that promises, especially those made by authorities, are honored when they lead to significant reliance.


Critical Analysis: Strengths and Limitations

Promissory estoppel serves as an essential safeguard for those who rely on promises made by others, particularly in contractual or governmental contexts. However, it is typically seen as a shield rather than a sword—meaning it is more often used as a defense to prevent the promisor from reneging on their promise than as a means to actively enforce the promise as a cause of action.


One of the challenges of this doctrine is that it lacks the element of consideration, which is traditionally required in contract law. Without consideration, the doctrine is often limited to protecting parties from loss rather than creating new obligations or entitlements.


Furthermore, courts have been cautious about extending the use of promissory estoppel too far. As Justice Bhagwati once remarked, opening the door too wide for promissory estoppel as a cause of action could lead to an overwhelming number of cases, complicating the judicial process.





Conclusion: Upholding Fairness and Accountability

In modern legal frameworks, especially in India, the doctrine of promissory estoppel plays a vital role in ensuring that promises—particularly those made by governments or powerful entities—are honored when individuals have acted on them in good faith. It upholds fairness, accountability, and prevents arbitrariness.


While it is not codified in the Indian Contract Act, the judiciary has made significant strides in interpreting and applying this doctrine. In cases where promises have been made in violation of public interest or legal statutes, courts have rightfully allowed exceptions. However, in instances where promises have led to significant action or reliance, courts have enforced the doctrine, ensuring that justice prevails.


Promissory estoppel reminds us that the law, at its best, is not just a set of rules but a protector of fairness and conscience.

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