Even when offer, acceptance, and consideration are all present, a contract can fail because one of the parties lacked the legal capacity to contract or because their consent was not given freely. Section 11 of the Contract Act covers capacity. Sections 13 to 22 cover consent. Together, these provisions protect parties who would otherwise be exploited by commercial counterparts.
Capacity to contract — Section 11
Section 11 states that every person is competent to contract who is (i) of the age of majority according to the law to which they are subject, (ii) of sound mind, and (iii) not disqualified from contracting by any law to which they are subject. We unpack each element.
Age of majority
In India, the age of majority is 18 years under the Indian Majority Act, 1875. A contract entered into by a person below 18 is void from the beginning. Not voidable at the option of the minor — void. The Privy Council settled this in 1903 in Mohori Bibee v Dharmodas Ghose, and the position has not changed since. A minor cannot ratify a contract on reaching majority; they would have to enter into a fresh contract after attaining 18.
This rule has surprising commercial consequences. A minor cannot validly sign an employment agreement, a tenancy, a loan, a sale deed, or any other contract. If they do, the contract has no legal effect, and the other party cannot enforce it. The protection runs one way: the minor's contracts cannot be enforced against the minor, but the minor can sometimes enforce them against the other party. This asymmetry is a deliberate choice to protect minors from commercial exploitation.
There are nuances. Section 68 of the Contract Act allows a person who has supplied necessaries to a minor to recover their value from the minor's property (not from the minor personally). "Necessaries" means things suitable to the minor's condition in life — food, clothing, medical care, education. A vendor who supplies necessaries to a minor can recover the reasonable cost from the minor's estate, even though no enforceable contract existed.
Sound mind
Section 12 defines a person of sound mind for contract purposes: "A person is said to be of sound mind for the purposes of making a contract, if, at the time when he makes it, he is capable of understanding it and of forming a rational judgment as to its effect upon his interests."
The test is functional and time-bound. A person who is generally of unsound mind may have lucid intervals during which they can contract. A person who is generally sound may be temporarily of unsound mind due to illness, intoxication, or extreme emotional distress, and cannot contract during that period. The question is: at the moment of contracting, did this person have the capacity to understand the contract and form a rational judgment?
Contracts entered into by a person of unsound mind are void, similar to minors' contracts. The Section 68 necessaries rule applies to them too.
Disqualified by law
Certain categories of persons are disqualified by specific statutes from contracting, either generally or for specific transactions. Examples include:
- Insolvents — once declared insolvent, the insolvent's property vests in the official assignee, and the insolvent cannot deal with property until discharged.
- Alien enemies — citizens of a country at war with India cannot enter into contracts with Indian residents during the war.
- Foreign sovereigns and diplomats — limited capacity to contract under the Foreign Sovereigns Immunity provisions.
- Convicts undergoing imprisonment — limited capacity to contract while in prison.
- Body corporates — companies and other juristic persons have only the capacity to contract that their constitutional documents (memorandum of association, partnership deed, trust deed) confer on them. A contract that is outside their object clause is ultra vires and void.
Free consent — Section 13
Section 13 defines consent: "Two or more persons are said to consent when they agree upon the same thing in the same sense." This is the famous Indian formulation of consensus ad idem. Both parties must agree on the same thing, in the same sense, at the same time.
Section 14 takes this further: consent is free when it is not caused by (a) coercion, (b) undue influence, (c) fraud, (d) misrepresentation, or (e) mistake. Each is defined in subsequent sections, and each has different consequences for the contract.
Coercion (Section 15)
Coercion is committing or threatening to commit an act forbidden by the Indian Penal Code, or unlawfully detaining or threatening to detain property, to obtain the other party's consent. The test is the underlying act — if the act used to pressure the other party would be a crime under the IPC, then the consent is coerced.
A contract obtained by coercion is voidable at the option of the party whose consent was coerced. The party can affirm the contract or rescind it. If they rescind, any benefit received under the contract must be returned.
Undue influence (Section 16)
Undue influence is consent obtained by a person in a dominant position who uses that position to obtain an unfair advantage over the other party. The Act lists specific relationships where dominance is presumed: master and servant, doctor and patient, lawyer and client, trustee and beneficiary, parent and child, religious adviser and disciple. In these relationships, the dominant party bears the burden of proving that consent was free, not the other way round.
A contract obtained by undue influence is voidable at the option of the influenced party. Indian courts have used this doctrine to set aside contracts where a vulnerable party was exploited by someone in a position of trust — particularly in family disputes about property, in lender-borrower disputes where the lender controlled the borrower, and in employment contracts containing extreme restrictions.
Fraud (Section 17)
Fraud is a deliberate false statement made to induce the other party to enter into the contract, or active concealment of a fact that ought to have been disclosed, or making a promise without any intention to perform it. The key element is intention to deceive.
A contract obtained by fraud is voidable at the option of the defrauded party. The defrauded party can also sue for damages, separately from rescinding the contract.
Misrepresentation (Section 18)
Misrepresentation is a false statement made without intent to deceive — perhaps innocently, or negligently. The maker of the statement believed it to be true, but it was not, and the false statement induced the other party to enter into the contract.
A contract obtained by misrepresentation is voidable at the option of the misled party. Unlike fraud, damages are not generally available for innocent misrepresentation — the remedy is rescission only.
Mistake (Sections 20, 21, 22)
Mistake operates differently. The Act distinguishes between mistakes of fact and mistakes of law, and between mutual mistakes and unilateral mistakes.
A mutual mistake of essential fact renders the contract void (not voidable). Both parties are mistaken about a fact essential to the agreement. Example: both parties agree to the sale of a specific painting, both unaware that the painting was destroyed in a fire the previous day. The contract is void from the start because the subject matter does not exist.
A unilateral mistake generally does not affect the contract. One party's mistake about a fact, where the other party did not share or cause the mistake, does not let the mistaken party escape the contract. The mistaken party bears the cost of their own mistake.
A mistake of law — being mistaken about Indian law — generally cannot be a ground for setting aside a contract. The presumption is that everyone knows the law. (A mistake about foreign law, however, is treated as a mistake of fact and can ground rescission.)
Void versus voidable
This distinction matters and is often confused. A void contract is no contract at all — it has no legal effect from the beginning, and no one can enforce it. Minors' contracts and contracts of unsound persons are void. Contracts based on mutual mistake of essential fact are void.
A voidable contract is a contract that one party (the party whose consent was not free) can choose to either affirm or rescind. Until they choose to rescind, the contract is fully effective. Contracts obtained by coercion, undue influence, fraud, or misrepresentation are voidable at the option of the wronged party.
The practical difference: in a void contract, no party can enforce anything. In a voidable contract, the wronged party has a choice — they can keep the deal alive if it now suits them, or rescind it. They can also sometimes claim damages even while affirming.
Practical drafting consequences
Several drafting practices in Indian commercial contracts respond to the capacity and consent rules.
Most contracts include a representation that both parties are of legal age, have the capacity to contract, and are not under any disability. This is partly evidentiary — if the other side later claims incapacity, they have to overcome their own contractual representation.
Many contracts include an "entire agreement" clause stating that the written contract represents the complete agreement and that no party has relied on any representations outside the contract. This limits the ability of a party to later claim that they were induced by an oral misrepresentation. However, this clause does not eliminate fraud claims — fraud overrides entire agreement clauses.
Acknowledgments of consideration, of free consent, and of having read and understood the contract are common boilerplate. They are useful evidence but not conclusive — courts will look at the substance.
Module 5 covers the fifth and final element: lawful object. What kinds of agreements are void on grounds of public policy or unlawful purpose, even when all other elements are present.