Capacity to Contract under Sections 11 and 12 of the Indian Contract Act, 1872: Who Is Competent to Contract, the Age of Majority, and the Consequences of Incapacity

Section 10 makes competence of the parties a condition of enforceability, and Section 11 supplies the test. It is stated positively rather than negatively: every person is competent unless he falls within one of three described classes. The three are minority, unsoundness of mind, and disqualification by some other law, and they are independent of one another, so a person may be competent on one count and not on another. This topic sets out the test, the law that fixes the age of majority, and the general consequences of a want of capacity. The three classes are then taken separately in the topics that follow.

1. The Statutory Test

Sections 10, 11 and 12, Indian Contract Act, 1872

10. All agreements are contracts if they are made by the free consent of parties competent to contract, for a lawful consideration and with a lawful object, and are not hereby expressly declared to be void.

11. Who are competent to contract. Every person is competent to contract who is of the age of majority according to the law to which he is subject, and who is of sound mind, and is not disqualified from contracting by any law to which he is subject.

12. What is a sound mind for the purposes of contracting. A person is said to be of sound mind for the purpose 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.

A person who is usually of unsound mind, but occasionally of sound mind, may make a contract when he is of sound mind.

A person who is usually of sound mind, but occasionally of unsound mind, may not make a contract when he is of unsound mind.

Section 11 is drafted as a presumption of capacity with three exceptions. The consequence is procedural and important: a party asserting that the other lacked capacity must plead and prove it, and the burden does not lie on the party asserting the contract. All three conditions must be satisfied at the time the contract is made; capacity acquired afterwards does not validate what was done without it.

2. The Age of Majority

Section 11 does not itself fix an age; it refers to the age of majority according to the law to which the person is subject. That law is the Indian Majority Act, 1875.

Section 3, Indian Majority Act, 1875

Every person domiciled in India shall be deemed to have attained his majority when he shall have completed his age of eighteen years and not before.

In computing the age of any person, the day on which he was born is to be included as a whole day, and he shall be deemed to have attained majority at the beginning of the eighteenth anniversary of that day.

The Act formerly provided that where a guardian of the person or property of a minor had been appointed by a court, or the superintendence of his property had been assumed by a Court of Wards, majority was attained at twenty-one. That extension was removed by amendment, and the age of majority is now uniformly eighteen. Two further points follow from the words 'the law to which he is subject'. The reference is to the person's personal law and domicile, so a person not domiciled in India is governed by the law of his domicile on the question of majority. And a different statute may fix a different age for a particular purpose, such as eligibility for an office or for marriage, without affecting contractual capacity.

3. The Three Classes of Incapacity

Class	Source	Effect on the agreement
Minority	Section 11, read with Section 3 of the Indian Majority Act, 1875	Void ab initio. No contract comes into existence, and the incapacity cannot be cured by ratification
Unsoundness of mind	Sections 11 and 12	Void, but the incapacity is assessed at the moment of contracting, so a person usually of unsound mind may contract in a lucid interval
Disqualification by any other law	Section 11, read with the statute or rule imposing the disqualification	Depends on the disqualifying provision. The agreement may be void, voidable, unenforceable without sanction, or merely irregular

The three are cumulative requirements, not alternatives. A person of full age and sound mind may still be incompetent because a statute disqualifies him; a person not disqualified by any statute may still be incompetent because he is a minor. Competence requires all three to be satisfied.

The three classes of incapacity, and the consequence of each

4. The Consequence of Incapacity

4.1 The agreement is void, not voidable

The Act does not say in terms what happens when a party is incompetent. The answer follows from Section 10 read with Section 2(g): an agreement made by an incompetent party is not enforceable by law and is therefore void. It is not voidable at the option of the incompetent party, which matters a great deal: a void agreement transfers nothing and confers nothing on anyone, including a transferee for value in good faith.

📖 Mathai Mathai v. Joseph Mary alias Marykutty Joseph, (2015) 5 SCC 622

Facts: A mortgage deed had been executed in favour of a girl aged fifteen, as collateral security for a dowry amount. She was not represented in the transaction by her natural guardian or by any guardian appointed by a court. Decades later her son claimed rights in the property as a deemed tenant, tracing his possession to that mortgage.

Held: The Supreme Court held the mortgage deed void ab initio. For an agreement to become a contract the parties must be competent, and under Section 11 attaining the age of majority is a condition of competency. A deed of mortgage is a contract, and it could not be held valid simply because it appeared to be in the minor's interest, unless she had been represented by her natural guardian or a guardian appointed by the court. No rights could be claimed under it.

Ratio: Section 11 admits of no exception based on the apparent benefit of the transaction to the minor. A minor who is not properly represented cannot be a party to a contract, and an instrument executed on that footing is void from the beginning.

⚠ Mathai Mathai sits in tension with an older line of authority

A number of High Court decisions, of which Raghava Chariar v. Srinivasa Raghava Chariar, (1916) ILR 40 Mad 308 is the leading Full Bench, had held that a minor may be a transferee or a mortgagee, on the reasoning that Section 11 disables a minor from binding himself and not from receiving a benefit. Mathai Mathai proceeds on the broader footing that a mortgage is a contract and that the minor must be represented. The decisions are not easily reconciled, and the safer statement is that a transaction wholly in a minor's favour, in which he undertakes no obligation, has generally been upheld, while a document to which the minor is a contracting party in his own name is vulnerable.

4.2 No estoppel against an incompetent party

📖 Nawab Sadiq Ali Khan v. Jai Kishori, AIR 1928 PC 152

Facts: A deed was executed by a person during his minority. It was afterwards sought to be enforced against him, and it was argued that his own conduct in executing and acting upon the instrument precluded him from denying its validity.

Held: The Privy Council held that the deed executed by a minor was a nullity, and that no question of estoppel or of ratification could arise in respect of it. A document that has no legal existence cannot be given effect by the conduct of the party who purported to execute it.

Ratio: An instrument executed by a person lacking capacity is a nullity and not merely unenforceable. Since there is nothing in law to affirm, neither estoppel nor subsequent conduct can validate it.

The same reasoning excludes estoppel under Section 115 of the Indian Evidence Act, 1872, now Section 121 of the Bharatiya Sakshya Adhiniyam, 2023. A rule of evidence cannot be used to create a contract that the substantive law declares incapable of existing, and the protection given by Section 11 would be worthless if it could be lost by the incompetent party's own representation.

4.3 Restitution and relief

Sections 64 and 65 do not assist a party who has dealt with an incompetent person, because each presupposes a contract, or an agreement between parties competent to contract. Relief, where it is given at all, proceeds on the equitable doctrine of restitution and on Section 33 of the Specific Relief Act, 1963, which empowers the court, on adjudging the cancellation of an instrument or on a defendant's successful plea that the agreement is void by reason of his incompetence, to require restoration of any benefit received so far as may be. The relief is restitutionary and is confined to restoring an identifiable benefit; it does not extend to compensating the other party for his loss.

5. Capacity Distinguished from Free Consent

Capacity and consent are separate conditions in Section 10 and produce different consequences. Capacity asks whether the party was legally able to contract at all; its absence makes the agreement void, so nothing passes and no one acquires anything. Free consent assumes capacity and asks whether the assent given was genuine; its absence makes the contract voidable, so the contract exists, property passes under it, and a bona fide transferee for value before avoidance is protected.

The distinction is practically decisive where a third party has acquired an interest. A purchaser from a minor takes nothing, however honest and however well paid. A purchaser from a person whose consent was obtained by fraud takes a good title if he bought for value and without notice before the contract was avoided.

6. The Position Stated Shortly

Section 10 makes competence a condition of enforceability, and Section 11 states the test as a presumption of capacity with three exceptions.
The three exceptions are minority, unsoundness of mind, and disqualification by any other law, and all three requirements must be satisfied.
Capacity is judged at the time the contract is made, and capacity acquired later does not validate it.
The age of majority is eighteen for every person domiciled in India, under Section 3 of the Indian Majority Act, 1875; the former extension to twenty-one for a minor under guardianship has been removed.
An agreement made by an incompetent party is void and not voidable, so nothing passes under it to anyone.
Mathai Mathai: a mortgage in the name of a minor not represented by a guardian is void ab initio, and the apparent benefit to the minor is immaterial.
Nawab Sadiq Ali Khan: a deed executed by a minor is a nullity, and no estoppel or ratification can arise on it.
Sections 64 and 65 do not apply; relief lies, if at all, under Section 33 of the Specific Relief Act, 1963 and is restitutionary in nature.
Capacity is distinct from free consent: the first produces voidness, the second voidability, and the difference determines the position of third parties.

7. Related Topics and Provisions

Topic or provision	Connection
Minor's Agreement	Minority in full, including necessaries, restitution, estoppel, ratification and the minor's position as agent, partner and surety
Person of Sound Mind under Section 12	Unsoundness of mind, lucid intervals and intoxication
Persons Disqualified by Law	Alien enemies, foreign sovereigns, convicts, insolvents and corporations
Free Consent under Sections 13 and 14	The condition that follows capacity in Section 10
Void vs Voidable Contract	Why incapacity produces voidness and not voidability
Section 10, Indian Contract Act	Competence as a condition of enforceability
Sections 11 and 12, Indian Contract Act	The test of competency and of soundness of mind
Section 3, Indian Majority Act, 1875	The age of majority
Section 33, Specific Relief Act, 1963	Restitution on cancellation, including against a minor
Section 121, Bharatiya Sakshya Adhiniyam, 2023	Estoppel, and why it does not run against an incompetent party