What is specific performance with a variation?

The Core Idea

The general rule of the law of evidence, expressed in Sections 91 and 92 of the Indian Evidence Act, 1872, is that when a contract has been reduced to writing, parties are bound by the written terms and oral evidence cannot be admitted to contradict or vary those terms. But this rule, strictly applied, would sometimes work grave injustice — particularly where the written instrument, through fraud, mistake, or misrepresentation, does not speak the truth about what the parties actually bargained for. Section 18 steps in to address precisely this gap. It lays down that where a plaintiff seeks specific performance of a written contract, and the defendant sets up a variation — that is, claims that the written document does not capture the true agreement — the plaintiff cannot obtain the performance he seeks except with the variation so set up by the defendant.

Two things deserve particular notice at the outset. First, the section is protective of the defendant and is curative in nature. Second, only the defendant can set up a variation under this section — not the plaintiff. If the plaintiff finds the contract incapable of performance, he cannot use Section 18 to set up a variation of his own; the section is not available to him as an offensive weapon.

The Three Situations Under Section 18

Clause (a): Written contract differs from what was actually agreed. This is the most important and expansive of the three clauses. Where, by fraud, mistake of fact, or misrepresentation, the written contract is in its terms or effect different from what the parties actually agreed to — or does not contain all the terms that were agreed upon — the plaintiff cannot enforce the written contract in its original form. He can only obtain specific performance as varied by the defendant's plea. In essence, this is closely analogous to the remedy of rectification. The law recognises that a fraudulent or mistaken reduction to writing does not wipe out the real bargain; the defendant must have an opportunity to prove the true agreement.

It is also worth noting that variation under this clause is broader in scope than rectification under Section 26. Whereas rectification requires a mutual mistake, variation under Section 18 applies even to a unilateral mistake, and misrepresentation is expressly included. The evidence of fraud or misrepresentation is admissible as proviso (1) to Section 92 of the Evidence Act explicitly permits proof of facts that would invalidate a document, including fraud, misrepresentation, and mistake.

Clause (b): Contract as framed does not produce the intended legal result. Sometimes both parties are perfectly agreed on the legal result they wish to achieve, but the instrument as drafted, through error of expression or drafting, produces a quite different result on its true construction. Neither party is to blame; the document has simply failed to accomplish what both intended. An illustration would be where A and B intend to confer upon B only a life interest in certain property, but on a true construction of the document B receives an absolute estate. Here, the contract cannot be enforced as written, for it frustrates the very purpose both parties had in mind. The defendant can set up this as a variation and the plaintiff, if he desires a decree at all, must accept performance only as varied to produce the legal result originally intended.

Clause (c): Parties have subsequently varied the terms. After the original contract was executed, the parties may have entered into a fresh agreement modifying its terms. The plaintiff cannot then come to court seeking performance of the original, unmodified contract while ignoring the subsequent variation. Where such a post-execution variation has been agreed, the plaintiff is bound by it and can obtain specific performance only in conformity with the varied terms. Notably, the courts have held that this clause is not confined to variations before the breach — even after breach, parties may agree to vary the terms, and a plaintiff who consents to such variation will be held bound by it. This is also a deliberate relaxation of the strict rule in Sections 91 and 92 of the Evidence Act.

The Plaintiff's Election

Once the defendant successfully proves the variation he has set up, the plaintiff is placed on his election. He may either have the suit dismissed or accept specific performance subject to the variation — but he cannot obtain the performance he originally sought while ignoring the established variation. The defendant, in other words, succeeds in reshaping the relief, though the contract itself is enforced. As the commentators have put it, the section is curative and remedial: when any action is founded on a written contract, courts are required to give effect to the written pact unless the defendant is able to plead and prove a variation of the terms.

It is equally important to understand what Section 18 does not permit. In K. Narendra v. Riviera Apartments Pvt. Ltd. (AIR 1999 SC 2309), the Supreme Court made it clear that variation can be ordered only in the circumstances mentioned in the section. Where a part of the property was rendered inalienable by statute and the respondents were agreeable to accept a smaller extent without insisting on a corresponding reduction in price, the court held that this did not fall within any of the three situations contemplated by Section 18, and therefore the variation could not be permitted. The section's remedial character does not give courts or parties a licence to rewrite contracts at will.

Relationship with Rectification

Section 18 must be read alongside Section 26, which deals with rectification of instruments. The two overlap but are distinct. Rectification is a plaintiff's remedy — sought when the instrument does not express the real common intention due to fraud or mutual mistake. Variation under Section 18 is a defendant's remedy — raised to resist specific performance being granted on the terms of a defective instrument. A further practical difference is that under Section 26(3), after rectification, the same suit may proceed to a decree for specific performance of the rectified instrument. Under Section 18, there is no formal rectification — but the plaintiff who wants his decree must accept performance as varied.