IPC Section 99 and BNS Section 37: Acts Against Which There Is No Right of Private Defence
The right of private defence protects a person who acts to prevent unlawful harm, but it is not unlimited. Section 99 of the Indian Penal Code, 1860 (IPC) and the corresponding Section 37 of the Bharatiya Nyaya Sanhita, 2023 (BNS) specify when the defence is unavailable and how much force may lawfully be used.
Section 99 IPC: statutory provision
The following reproduces the substantive provision of Section 99 IPC, with punctuation and formatting standardized for readability:
There is no right of private defence against an act which does not reasonably cause the apprehension of death or of grievous hurt, if done, or attempted to be done, by a public servant acting in good faith under colour of his office, though that act may not be strictly justifiable by law.
There is no right of private defence against an act which does not reasonably cause the apprehension of death or of grievous hurt, if done, or attempted to be done, by the direction of a public servant acting in good faith under colour of his office, though that direction may not be strictly justifiable by law.
There is no right of private defence in cases in which there is time to have recourse to the protection of the public authorities.
Extent to which the right may be exercised. The right of private defence in no case extends to the inflicting of more harm than it is necessary to inflict for the purpose of defence.
Explanation 1. A person is not deprived of the right of private defence against an act done, or attempted to be done, by a public servant, as such, unless he knows or has reason to believe that the person doing the act is such public servant.
Explanation 2. A person is not deprived of the right of private defence against an act done, or attempted to be done, by the direction of a public servant, unless he knows or has reason to believe that the person doing the act is acting by such direction; or unless such person states the authority under which he acts; or, if he has authority in writing, unless he produces such authority, if demanded.
Current law: Section 37 BNS contains the corresponding restrictions and explanations. The BNS came into force on 1 July 2024. Application of the IPC or BNS to a particular event depends on the date of the alleged act and applicable savings provisions.
Meaning of the restrictions on private defence
The right of private defence is preventive, not a licence to punish. The legal assessment considers the circumstances as they reasonably appeared to the person facing danger, including the immediacy and seriousness of the threat.
When the defence is restricted
- Acts of public servants: A qualifying act performed in good faith under colour of office, which does not reasonably create fear of death or grievous hurt, generally cannot be resisted by claiming private defence.
- Acts done on official directions: Similar protection applies where a person acts under the direction of a qualifying public servant, subject to the statutory knowledge and authority requirements.
- Opportunity to seek protection: The defence is restricted where there is sufficient time to seek the protection of public authorities.
- Excessive force: Even where the right arises, the defender may not inflict more harm than is necessary for defence.
These restrictions must be read together with the other private-defence provisions, including IPC Sections 96-106 and BNS Sections 34-44. Whether a particular response is lawful depends on the facts and the statutory conditions.
Public servants acting in good faith
Good faith is not a blanket immunity for every official act. The statutory protection requires action in good faith under colour of office and the absence of a reasonable apprehension of death or grievous hurt. A public servant's action may be imperfectly authorised without automatically creating a right to use force against that official.
Explanation 1: The person facing the act must know, or have reason to believe, that the actor is a public servant acting as such. Explanation 2: Where the act is done on a public servant's direction, the provision addresses knowledge of that direction and disclosure or production of authority when demanded.
Importantly, if the act reasonably creates apprehension of death or grievous hurt, the specific statutory bar relating to public servants does not apply merely because the actor is an official. The remaining rules on necessity and the permissible extent of defence still matter.
How much force is permitted?
The governing rule is necessary defensive force. The law does not require mathematical precision during a sudden attack, but it does not protect retaliation, punishment, or force that goes beyond what is needed to avert the threat. A right to cause death arises only in the specific circumstances recognised by the provisions governing defence of the body or property.
For example, pushing away a person to stop an immediate unlawful assault may be different from continuing to strike that person after the threat has ended. The legal outcome depends on the evidence, timing, nature of the threat, and reasonable necessity.
IPC Section 99 and BNS Section 37: comparison
| Issue | IPC (historical provision) | BNS (current corresponding provision) |
|---|---|---|
| Restrictions on private defence | Section 99 | Section 37 |
| Basic right of private defence | Section 96 | Section 34 |
| Defence of body and property | Section 97 | Section 35 |
| Acts by persons lacking criminal responsibility | Section 98 | Section 36 |
| When defence of the body may extend to causing death | Section 100 | Section 38 |
The corresponding provisions continue the general statutory framework, but the precise text of the applicable enactment should be consulted in any legal proceeding.
Practical illustrations
1. Official action without serious threat
A person attempts to assault an identifiable public servant conducting an official act in good faith, where no reasonable fear of death or grievous hurt exists. The restrictions in Section 99 IPC or Section 37 BNS may prevent reliance on private defence.
2. Time to seek public protection
Where a property dispute is developing and there is sufficient time to contact lawful authorities, using violence instead of seeking protection may fall outside the right of private defence.
3. Force after danger has passed
A defender stops an attack but continues to cause harm after the attacker has withdrawn. The additional harm may exceed what is necessary for defence.
4. Serious immediate danger
If an act by an official reasonably creates fear of death or grievous hurt, the specific public-servant restriction is not an automatic bar. The other statutory limits still govern the defensive response.
Frequently asked questions
Does Section 99 IPC abolish the right of private defence?
No. It sets conditions and limits on a right recognised elsewhere in the IPC. Section 37 BNS serves the corresponding function under the current legislation.
Can a person resist a public servant in every case of an unlawful act?
No. The statutory conditions include good faith, colour of office, reasonable apprehension of death or grievous hurt, and the person's knowledge of official status or authority.
Can private defence be used if police protection is available in time?
The statute restricts the right where there is time to seek protection from public authorities. Whether there was sufficient time is a factual question.
Is excessive force protected by private defence?
No. The right does not extend to inflicting more harm than necessary for defence.
Official legislation and further reading
Consult the authoritative statutory text and any relevant amendments or notifications:
- India Code: Bharatiya Nyaya Sanhita, 2023 (see Section 37).
- India Code: Indian Penal Code, 1860 (see Section 99).
- Ministry of Home Affairs for official criminal-law notifications.
This article provides general legal information, not case-specific legal advice. Consult a qualified lawyer for an actual dispute or prosecution.