Indian criminal law | Private defence

IPC Section 101 and BNS Section 39: When Private Defence Permits Harm Other Than Death

Section 101 of the Indian Penal Code, 1860 explains when a person defending the body may use necessary non-fatal force against an assailant. The corresponding provision under the Bharatiya Nyaya Sanhita, 2023 (BNS), in force from 1 July 2024, is Section 39.

Current legal position: The BNS generally governs offences committed on or after 1 July 2024. The IPC remains relevant to earlier acts and proceedings, subject to the applicable repeal and savings provisions. The historical IPC section number is retained here for reference.

Text of IPC Section 101

If the offence be not of any of the descriptions enumerated in the last preceding section, the right of private defence of the body does not extend to the voluntary causing of death to the assailant, but does extend, under the restrictions mentioned in section 99, to the voluntary causing to the assailant of any harm other than death.

Here, the “last preceding section” means IPC Section 100, concerning specified circumstances in which private defence of the body may extend to causing death. The restrictions are found in IPC Section 99.

Corresponding current law: BNS Section 39

BNS Section 39, titled “When such right extends to causing any harm other than death”, retains the substance of IPC Section 101. It refers to the serious categories of assault in BNS Section 38 and the limitations in BNS Section 37. Where the assault does not fall within Section 38, the defender cannot intentionally cause the assailant's death in reliance on this right, although necessary non-fatal harm may be permitted.

Read the official BNS provisions on the National Crime Records Bureau portal or the official BNS text (PDF).

Meaning and scope of the right

Private defence is a protective right, not a licence for punishment or retaliation. Under BNS Sections 34 and 35, acts done within the lawful right of private defence are protected, and a person may defend their own body or another person's body against an offence affecting the human body. The force used must be connected to a genuine and reasonable apprehension of danger.

Limits on force: BNS Section 37

Section 37 places important restrictions on private defence. In particular, a defender may not inflict more harm than necessary for protection. The section also restricts the right where there is time to seek protection from public authorities, and in specified situations involving acts of public servants acting in good faith under colour of office, subject to the statutory conditions and explanations.

When could causing death be justified?

BNS Section 38 identifies exceptional assaults, including those reasonably creating apprehension of death or grievous hurt, assaults with specified serious intentions, and certain acid attacks. Even in those cases, Section 37 continues to restrict the degree of force. If the threat is outside those categories, Section 39 governs non-fatal defensive force.

When does the right begin and end?

Under BNS Section 40 (corresponding to IPC Section 102), the right starts when a reasonable apprehension of danger to the body arises from an attempt or threat, even before the offence is completed. It lasts only while that apprehension continues.

IPC and BNS section comparison

Subject	Indian Penal Code, 1860	Bharatiya Nyaya Sanhita, 2023
General right to defend body or property	Section 97	Section 35
Restrictions on private defence	Section 99	Section 37
Defence extending to causing death	Section 100	Section 38
Defence permitting harm other than death	Section 101	Section 39
Beginning and duration of defence of body	Section 102	Section 40

Illustrative examples

Example 1: A person is pushed during a confrontation and uses only the force reasonably needed to stop an ongoing assault. Depending on the facts, such proportionate non-fatal force may fall within Section 39.

Example 2: After an assailant retreats and the danger has ended, the defender chases and injures the person in revenge. Such retaliatory conduct would not ordinarily be justified as private defence.

Example 3: An assault creates a reasonable apprehension of death or grievous hurt. The legal analysis may instead involve Section 38, always subject to Section 37.

Frequently asked questions

Is IPC Section 101 still applicable?

It remains relevant for conduct governed by the IPC before the BNS commencement date and for legal interpretation of earlier cases. For offences committed from 1 July 2024, consult BNS Section 39 and the applicable transitional rules.

Does Section 39 allow any amount of non-fatal injury?

No. BNS Section 37 expressly prohibits inflicting more harm than is necessary for defence. The circumstances and reasonableness of the response matter.

Can private defence protect another person?

Yes. BNS Section 35 recognises the right to defend the body of another person, subject to the statutory restrictions.

Official legal references

This article is for general legal information. Whether a particular act qualifies as private defence depends on evidence, the nature of the threat and the applicable law.