General Exceptions under the BNS: Chapter III (Sections 14 to 44)

The criminal law forbids certain acts. But not every act that fits the description of an offence attracts punishment. A soldier who fires on a mob under lawful command, a surgeon who cuts a patient with consent, a woman who kills an assailant in self defence, a child of six who takes a companion's toy, a schizophrenic who does not know what he is doing: none of these is a criminal, even where the physical act would ordinarily fit the definition of an offence. The reason is that Chapter III of the Bharatiya Nyaya Sanhita, 2023, gathers together a set of General Exceptions that operate as complete defences. Read alongside Section 6 of the BNS, they are treated as engrafted into every offence defined in the Sanhita. This module walks through Sections 14 to 44 of the BNS, section by section, and closes with the burden of proof rule that governs their operation.

1. Meaning and Rationale

What is a General Exception

A General Exception is a rule of the substantive criminal law under which conduct that would otherwise be an offence is not treated as one. The exception does not deny that the physical act occurred. It denies that the act is punishable, either because the actor lacks the necessary mental element (mens rea), or because the act is affirmatively justified by law, or because the actor was not a fit subject for criminal responsibility at all. Once made out, a General Exception is a complete defence: the accused must be acquitted.

Why the Sanhita contains this chapter

The purpose of Chapter III is one of economy. The exceptions listed apply to every offence defined in the Sanhita, and to every offence created by any special or local law, unless the special law expressly excludes them. Instead of repeating in each offence-defining section that (say) an insane person is not liable, or that an act done by mistake of fact in good faith is not an offence, the drafters have collected the exceptions in one chapter and made them universally available. This is what Section 2(24) BNS (formerly Section 40 IPC) reflects when it treats the word offence as including any conduct that is not covered by a General Exception.

Relationship with Section 6 BNS

The reading rule

Every offence defined in the Sanhita is to be read as if the words "except in the cases specified in Chapter III" have been inserted into its opening line. The exceptions engrafted by Chapter III thus operate universally. Nothing in Chapter III is available, however, where the special or local law creating the offence expressly excludes it.

2. Classification of the Exceptions

Excusable and justifiable defences

Chapter III groups two kinds of exceptions. Excusable defences excuse the accused because he lacked the mental element that the offence requires. Justifiable defences justify the act itself because the law authorises or permits it in the circumstances.

Excusable Defences	Justifiable Defences
The act would ordinarily be criminal, but the accused's condition or state of mind means he cannot be blamed for it.	The act is itself lawful because the law authorises or permits it in the specific circumstances.
Focus on the actor: incapacity, mistake, absence of mens rea.	Focus on the act: it is what the law wants the actor to do, or would permit any similarly placed person to do.
Illustrations: mistake of fact (Sections 14, 17), accident (Section 18), infancy (Sections 20, 21), insanity (Section 22), intoxication (Sections 23, 24), compulsion by threats (Section 32).	Illustrations: judicial acts (Sections 15, 16), necessity (Section 19), consent (Sections 25 to 30), trifling harm (Section 33), private defence (Sections 34 to 44).

The seven functional groups

Chapter III arranged by function

Judicial acts: Sections 15 and 16.
Mistake of fact: Sections 14 and 17.
Accident: Section 18.
Absence of criminal intent (necessity, infancy, insanity, intoxication, compulsion): Sections 19 to 24 and 32.
Consent: Sections 25 to 30.
Trifling harm: Section 33.
Private defence of person and property: Sections 34 to 44.

3. Judicial Acts

Section 15: act of a Judge acting judicially (formerly Section 77 IPC)

Nothing is an offence which is done by a Judge when acting judicially in the exercise of any power which is, or which in good faith he believes to be, given to him by law. The section protects the judicial function itself. A wrong decision, an excessive sentence, or an arrest ordered without cause are not offences by the Judge, provided he was acting judicially and in good faith.

Section 16: act done pursuant to a court order (formerly Section 78 IPC)

Nothing which is done in pursuance of, or which is warranted by, a judgment or order of a Court of Justice, if done whilst such judgment or order remains in force, is an offence, notwithstanding the Court may have had no jurisdiction to pass such judgment or order, provided the person doing the act in good faith believes that the Court had such jurisdiction. The section protects the executing officer, the bailiff, and the police officer who acts on the court's warrant.

4. Mistake of Fact and of Law

Section 14: bound by law or believing so on mistake of fact (formerly Section 76 IPC)

Nothing is an offence which is done by a person who is, or who by reason of a mistake of fact and not by reason of a mistake of law in good faith believes himself to be, bound by law to do it. Illustrations: a soldier firing on a mob in obedience to lawful command; a court officer arresting the wrong person after due enquiry, honestly believing him to be the person named in the warrant.

Section 17: justified by law or believing so on mistake of fact (formerly Section 79 IPC)

Nothing is an offence which is done by any person who is justified by law, or who by reason of a mistake of fact and not by reason of a mistake of law in good faith believes himself to be justified by law, in doing it. The distinction between bound by law (Section 14) and justified by law (Section 17) is thin but real. Bound means legally obliged to act. Justified means legally permitted to act.

Cross reference

Sections 14 and 17 form the subject of a separate module in this series (Module: Mistake of Law and Fact). Refer to that module for the ingredients, the good faith requirement under Section 2(11) BNS, and the leading judicial elaboration in State of Orissa v. Bhagaban Barik and Chirangi v. State.

5. Accident (Section 18)

Section 18 BNS (formerly Section 80 IPC) provides that nothing is an offence which is done by accident or misfortune, and without any criminal intention or knowledge, in the doing of a lawful act in a lawful manner by lawful means and with proper care and caution. A separate module in this series (Module: Accident as a General Exception) walks through the ingredients, the illustrations, and the leading cases such as Tunda v. Rex and State Government of Madhya Pradesh v. Rangaswamy. Refer to that module for the detailed treatment.

6. Necessity and Absence of Criminal Intent

Section 19: necessity (formerly Section 81 IPC)

Nothing is an offence merely by reason of its being done with the knowledge that it is likely to cause harm, if it be done without any criminal intention to cause harm, and in good faith for the purpose of preventing or avoiding other harm to person or property. The section codifies the doctrine of necessity. Illustration (a) to the section: a captain of a steamer who, without any fault or negligence, finds himself in such a position that before he can stop his vessel he must inevitably run down a boat with twenty or thirty persons, and does so to save a hundred passengers of his own vessel. He commits no offence.

📖 R. v. Dudley and Stephens, (1884) 14 QBD 273

Two shipwrecked sailors killed and ate the cabin boy to save themselves from starvation. They were convicted of murder. The English court held that necessity is not a defence to murder. The Indian position under Section 19 BNS is broadly consistent: necessity is a defence where the actor lacks criminal intention, but it does not extend to taking innocent life for one's own preservation.

Sections 20 and 21: infancy

Section 20 BNS (formerly Section 82 IPC). Nothing is an offence which is done by a child under seven years of age. This is an absolute exception. Doli incapax at common law.
Section 21 BNS (formerly Section 83 IPC). Nothing is an offence which is done by a child above seven and under twelve years of age, who has not attained sufficient maturity of understanding to judge of the nature and consequences of his conduct on that occasion. This is a rebuttable presumption. The prosecution must prove that the child had reached the required understanding.

Section 22: unsoundness of mind (formerly Section 84 IPC)

Section 22 BNS

Nothing is an offence which is done by a person who, at the time of doing it, by reason of unsoundness of mind, is incapable of knowing the nature of the act, or that he is doing what is either wrong or contrary to law.

Section 22 codifies a version of the McNaughton Rules of English common law (1843). The accused must show that at the time of the act, by reason of unsoundness of mind, he was incapable of knowing either the nature of the act or that it was wrong or contrary to law.

📖 Dahyabhai Chhaganbhai Thakkar v. State of Gujarat, AIR 1964 SC 1563

The accused pleaded insanity to a charge of murder. The Supreme Court held that although the burden of establishing insanity rests on the accused under Section 105 IEA (now Section 108 BSA), this burden is discharged on a preponderance of probabilities. Even where the accused fails to establish the defence, evidence of unsoundness of mind may create a reasonable doubt on mens rea and lead to acquittal.

Sections 23 and 24: intoxication

Section 23 BNS (formerly Section 85 IPC). Nothing is an offence which is done by a person who, at the time of doing it, is by reason of intoxication incapable of knowing the nature of the act, or that he is doing what is either wrong or contrary to law, provided that the thing which intoxicated him was administered to him without his knowledge or against his will. Involuntary intoxication is a full defence.
Section 24 BNS (formerly Section 86 IPC). In cases where an offence requires a particular intent or knowledge, an act committed by a person in a state of intoxication is to be treated as if the intoxicated person had the same knowledge as if he had not been intoxicated, unless the thing which intoxicated him was administered without his knowledge or against his will. Voluntary intoxication does not excuse; it only reduces the ability to prove a specific intent.

📖 Basdev v. State of Pepsu, AIR 1956 SC 488

The Supreme Court, drawing on Director of Public Prosecutions v. Beard, held that voluntary drunkenness does not by itself negate criminal responsibility. It may, however, reduce murder to culpable homicide not amounting to murder if the accused was so intoxicated that he was incapable of forming the specific intention required for murder. Rule: voluntary intoxication and specific intent operate in a narrow band, and Section 24 BNS governs the analysis.

7. Consent

Sections 25, 26, 27: acts done with consent

Section 25 BNS (formerly Section 87 IPC). An act not intended and not known to be likely to cause death or grievous hurt, done by consent of a person above the age of eighteen years, is not an offence, even though harm may result. Illustration: two friends who fence with foils in play, one of them causes hurt to the other.
Section 26 BNS (formerly Section 88 IPC). An act not intended to cause death, done by consent of the person harmed, in good faith for that person's benefit, is not an offence. Illustration: a surgeon who performs a painful operation with the patient's consent, knowing that death may result but intending the patient's benefit.
Section 27 BNS (formerly Section 89 IPC). An act done in good faith for the benefit of a child under twelve years of age or a person of unsound mind, by the guardian or with the guardian's consent, is not an offence, even where death may result, provided specified conditions are satisfied.

Section 28: what is not consent

Section 28 BNS

A consent is not such a consent as is intended by any section of this Sanhita:

(a) if the consent is given by a person under fear of injury, or under a misconception of fact, and the person doing the act knows, or has reason to believe, that the consent was given in consequence of such fear or misconception; or
(b) if the consent is given by a person who, from unsoundness of mind, or intoxication, is unable to understand the nature and consequence of that to which he gives his consent; or
(c) unless the contrary appears from the context, if the consent is given by a person who is under twelve years of age.

Section 29: consent as no defence to independent offences

The exceptions in Sections 25, 26 and 27 do not extend to acts which are offences independently of any harm they may cause or be intended to cause to the person giving consent. Illustration: a duel fought by consent. Even though both parties consent to the risk of harm, causing death in a duel is murder, because the act is an offence independently of the consent.

Section 30: acts done in good faith without consent

An act done in good faith for the benefit of a person without that person's consent is not an offence if the circumstances are such that it is impossible to obtain consent, and the harm is one such that a reasonable person would risk it for the benefit. Illustration: a surgeon who operates on an unconscious accident victim to save his life.

8. Miscellaneous Excusable Acts

Section 31: communication in good faith (formerly Section 93 IPC)

No communication made in good faith is an offence by reason of any harm to the person to whom it is made, if it is made for the benefit of that person. Illustration: a surgeon in good faith communicates to a patient his opinion that he cannot live. The patient dies in consequence of the shock. The surgeon has committed no offence, though he knew it to be likely that the communication might cause the patient's death.

Section 32: compulsion by threats (formerly Section 94 IPC)

Except murder and offences against the state punishable with death, nothing is an offence which is done by a person who is compelled to do it by threats which, at the time of doing it, reasonably cause the apprehension that instant death to that person will otherwise be the consequence. The exception does not apply where the accused had voluntarily placed himself in the situation. Duress is a narrow defence in Indian law: it excludes murder, treason, and offences carrying capital punishment.

Section 33: trifling harm (formerly Section 95 IPC)

Nothing is an offence by reason that it causes, or is intended to cause, or is known to be likely to cause, any harm, if that harm is so slight that no person of ordinary sense and temper would complain of it. The section gives statutory form to the maxim de minimis non curat lex: the law does not concern itself with trifles. Its function is to keep the criminal law out of ordinary jostling in a crowd, casual and inadvertent bumps, and other minor contacts that would otherwise be technical assaults or hurts.

9. Right of Private Defence (Sections 34 to 44)

Section 34: the general right

Section 34 BNS (formerly Section 96 IPC)

Nothing is an offence which is done in the exercise of the right of private defence.

The right of private defence is the substantive right of every person to defend himself, his property, and (in specified cases) the person and property of others, against unlawful aggression. The right is subject to the limits set out in Sections 35 to 44. Its rationale is that the state cannot always be present when unlawful violence is threatened, and the citizen must be permitted to protect himself.

Sections 35 and 36: limits

Section 35 BNS (formerly Section 97 IPC). Extent of the right: private defence of the body, and of movable and immovable property, own or another's.
Section 36 BNS (formerly Section 98 IPC). Right against acts of persons of unsound mind, minors, and other persons legally incapable. The defender may still exercise private defence even though the aggressor is legally excused.

Sections 37 and 38: private defence of the body

Section 37 BNS (formerly Section 99 IPC). Restrictions. The right does not extend to acts causing more harm than necessary. It does not extend where there is time to have recourse to public authorities. It does not extend to acts by public servants acting in good faith, provided the act does not cause reasonable apprehension of death or grievous hurt.
Section 38 BNS (formerly Section 100 IPC). Six categories of assault where the right of private defence of the body extends to voluntarily causing death: apprehension of death, of grievous hurt, of rape, of gratifying unnatural lust, of kidnapping or abduction, of wrongful confinement under specified circumstances, and (added post 2013) of acid attack.

Sections 39 to 40: private defence of the body (further provisions)

Section 39 BNS (formerly Section 101 IPC). In cases other than those specified in Section 38, the right does not extend to voluntarily causing death, but does extend to voluntarily causing any harm short of death.
Section 40 BNS (formerly Section 102 IPC). Commencement and continuance of the right of private defence of the body. It commences on reasonable apprehension of danger and continues as long as the apprehension continues.

Sections 41 to 44: private defence of property

Section 41 BNS (formerly Section 103 IPC). Six specified offences against property where the right of private defence extends to voluntarily causing death. Robbery, house breaking after sunset and before sunrise, mischief by fire, theft, mischief or house trespass with a threat of death or grievous hurt.
Section 42 BNS (formerly Section 104 IPC). In cases other than those specified in Section 41, the right does not extend to voluntarily causing death but does extend to voluntarily causing any other harm.
Section 43 BNS (formerly Section 105 IPC). Commencement and continuance of the right of private defence of property. Different rules for theft, robbery, criminal trespass and mischief.
Section 44 BNS (formerly Section 106 IPC). Right of private defence against a deadly assault when there is risk of harm to an innocent person.

📖 Darshan Singh v. State of Punjab, (2010) 2 SCC 333

The Supreme Court laid down ten principles for the exercise of the right of private defence. The right is a substantive one; it is not required that the accused prove the plea beyond reasonable doubt; the right commences the moment reasonable apprehension arises; the harm caused must not be disproportionate to the harm apprehended; and the burden of establishing the right is on the accused, but he may rely on evidence brought on record by the prosecution.

10. Burden of Proof under Section 108 BSA

Section 108 BSA (formerly Section 105 IEA)

When a person is accused of any offence, the burden of proving the existence of circumstances bringing the case within any of the General Exceptions in the Bharatiya Nyaya Sanhita, or within any special exception or proviso contained in any other part of the same Sanhita, or in any law defining the offence, is upon him, and the Court shall presume the absence of such circumstances.

Section 108 BSA reverses the burden of proof for the General Exceptions. The prosecution proves the offence beyond reasonable doubt. Once done, the burden of establishing an exception falls on the accused. But the standard he must meet is preponderance of probabilities, not proof beyond reasonable doubt. And even where he fails to establish the exception on the balance of probabilities, if his evidence creates a reasonable doubt on any ingredient of the offence, he is entitled to acquittal. This is the K. M. Nanavati / Dahyabhai principle.

11. Consolidated Landmark Judgments

K. M. Nanavati v. State of Maharashtra, AIR 1962 SC 605. Presumption of innocence and Section 108 BSA. Standard of proving an exception is preponderance.
Dahyabhai Chhaganbhai Thakkar v. State of Gujarat, AIR 1964 SC 1563. Insanity plea. Standard of proof. Reasonable doubt may lead to acquittal even where defence not fully proved.
State of Orissa v. Bhagaban Barik, AIR 1987 SC 1265. Ignorance of fact excuses; ignorance of law does not.
Chirangi v. State of Nagpur, ILR (1952) Nag 282. Mistake of fact in good faith. Delusion caused by fever. Father killed son believing him to be a tiger.
R. v. Prince, (1875) LR 2 CCR 154. Mistake of fact does not excuse where the statute is strict as to that fact.
R. v. Tolson, (1889) 23 QBD 168. Honest belief as a defence to bigamy. Early insistence on the presumption of mens rea.
Basdev v. State of Pepsu, AIR 1956 SC 488. Voluntary intoxication under Section 24 BNS. Effect on specific intent.
Waryam Singh v. Emperor, AIR 1926 Lah 554. Mistake of fact and killing under delusion. Sections 14 and 79 IPC applied.
Darshan Singh v. State of Punjab, (2010) 2 SCC 333. Ten principles for the right of private defence.
Munney Khan v. State of Madhya Pradesh, AIR 1971 SC 1491. Private defence and proportionality.
Deo Narain v. State of Uttar Pradesh, (1973) 1 SCC 347. Reasonable apprehension of danger sufficient for exercise of private defence.
R. v. Dudley and Stephens, (1884) 14 QBD 273. Necessity not a defence to murder. Broadly consistent with Section 19 BNS.

Frequently Asked Questions

What are the General Exceptions under the BNS?

The General Exceptions are complete defences to criminal charges, set out in Chapter III of the Bharatiya Nyaya Sanhita, 2023 (Sections 14 to 44). They cover mistake of fact, judicial acts, accident, necessity, infancy, unsoundness of mind, intoxication, consent, communication in good faith, compulsion by threats, trifling harm, and private defence.

What is the difference between an excusable and a justifiable defence?

Excusable defences excuse the accused because he lacked the mental element the offence requires (mistake of fact, accident, infancy, insanity, intoxication). Justifiable defences justify the act itself because the law authorises or permits it (judicial acts, necessity, consent, private defence).

Who bears the burden of proving a General Exception?

Section 108 of the Bharatiya Sakshya Adhiniyam, 2023 (formerly Section 105 IEA), places the burden on the accused. The Court shall presume the absence of exceptional circumstances. But the standard the accused must meet is preponderance of probabilities, not beyond reasonable doubt.

What is the age of criminal responsibility under the BNS?

Section 20 BNS (formerly Section 82 IPC) provides that nothing is an offence which is done by a child under seven years. Section 21 BNS provides that acts of a child above seven and under twelve are also excused where the child has not attained sufficient maturity of understanding.

Is necessity a defence to murder in India?

No. Section 19 BNS (formerly Section 81 IPC) codifies the doctrine of necessity, but it does not extend to taking innocent life to preserve one's own. R v Dudley and Stephens (1884) 14 QBD 273 is the classical authority; the Indian position is broadly consistent.

What is the right of private defence?

Sections 34 to 44 BNS (formerly Sections 96 to 106 IPC) recognise the right of every person to defend himself, his property, and specified others against unlawful aggression. The right extends, in six categories of assault, to voluntarily causing death (Section 38 BNS). Darshan Singh v State of Punjab (2010) laid down the ten guiding principles.