Introduction

One of the most asked and most confused topics in criminal law is the difference between murder and culpable homicide. Many law students treat them as two separate crimes sitting side by side. That is not how the law works.

Under the Bharatiya Nyaya Sanhita, 2023 (BNS), which replaced the Indian Penal Code from 1 July 2024, culpable homicide is defined under Section 100 and murder is defined under Section 101. The old IPC sections 299 and 300 have simply been renumbered. The core legal logic remains the same.

This blog breaks down both concepts in plain language. No unnecessary jargon. No complicated sentences. Just clear explanations that will help you understand the law and revise it quickly for your judiciary exam.

What is Culpable Homicide? (Section 100 BNS)

Culpable homicide means a blameworthy killing. It happens when a person causes the death of another with one of the following mental states:

• Intention to cause death

• Intention to cause bodily injury that is likely to cause death

• Knowledge that the act is likely to cause death

Notice that intention to kill is not required in all cases. Even if a person did not want the victim to die, but knew their act was likely to cause death, that is still culpable homicide.

The word 'culpable' simply means blameworthy. And 'homicide' means killing of one human being by another. So culpable homicide is a killing that carries legal blame because of the mental state behind it.

The Three Explanations under Section 100

Section 100 also carries three important explanations that courts look at in real cases:

• If the victim was already weak or ill and died faster than a healthy person would have, the accused cannot escape blame on that ground. You take your victim as you find them.

• If the accused's act sped up a death that was already coming, the accused is still treated as having caused the death.

• Causing the death of an unborn child in the womb is addressed separately and may or may not amount to culpable homicide depending on facts.

What is Murder? (Section 101 BNS)

Murder is not a separate crime from culpable homicide. It is an aggravated form of it. Every murder is a culpable homicide, but not every culpable homicide is murder.

A culpable homicide becomes murder when it satisfies any one of four specific clauses under Section 101, and none of the five exceptions apply.

The Four Clauses of Section 101

The four clauses (a) to (d) describe situations where the mental state is serious enough to call the killing murder:

• Clause (a): The act was done with the intention of causing death.

• Clause (b): The act was done with the intention of causing bodily injury that the offender knew was likely to cause death of that particular person.

• Clause (c): The act was done with the intention of causing bodily injury that is sufficient in the ordinary course of nature to cause death.

• Clause (d): The act was done with knowledge that it is so imminently dangerous that it must in all probability cause death, with no excuse for taking that risk.

Clause (c) is the most tested one in judiciary exams and in real courts. The Supreme Court settled its meaning in Virsa Singh v. State of Punjab (AIR 1958 SC 465). The key test from that case is: if the accused intended to cause that particular injury, and the injury was objectively sufficient in the ordinary course of nature to cause death, the offence is murder. It does not matter that the accused did not intend to kill.

Likely to Cause Death vs Sufficient to Cause Death

This is the most important distinction in this entire topic. Two phrases that look similar but mean very different things:

Getting these two phrases confused is one of the most common mistakes in judiciary exam answers. A single word, 'likely' versus 'sufficient,' separates culpable homicide from murder.

IPC to BNS: Section Number Changes

Since the BNS came into force on 1 July 2024, all old IPC numbers have changed. Here is the exact mapping for this topic:

One very common error found even in published notes is citing Section 104 as the punishment for murder. That is wrong. Section 104 applies only when a person already serving life imprisonment commits murder. The punishment for murder in ordinary cases is Section 103 BNS.

Culpable Homicide vs Murder: Side-by-Side Comparison

The Five Exceptions That Reduce Murder to Culpable Homicide

Even when the facts satisfy one of the four murder clauses, the offence can come down to culpable homicide not amounting to murder if one of five exceptions applies. These exceptions recognise situations where the killing was still wrong, but the law treats the accused's moral blame as lower.

Exception 1: Grave and Sudden Provocation

If a person loses self-control due to grave and sudden provocation and, in that state, kills the person who provoked them, the offence is not murder. It becomes culpable homicide not amounting to murder.

The key word is 'sudden.' Both conditions must be met: the provocation must be grave, and it must still be operating at the moment of the killing. If time passed between the provocation and the act, reason had a chance to return, and the exception fails.

The Supreme Court settled this in K.M. Nanavati v. State of Maharashtra (AIR 1962 SC 605). A naval officer learned of his wife's affair, drove to his ship to collect a revolver, then went to the other man's house and shot him. The Court held that the hours between learning of the affair and pulling the trigger were a cooling-off period. The provocation was grave, but it was no longer sudden. The conviction was for murder.

Exception 2: Exceeding the Right of Private Defence

If a person had a genuine right of private defence but used more force than the law allows, and did so in good faith without premeditation, the offence is not murder. This exception applies where the right existed but was overstepped.

Exception 3: Public Servant Acting in Good Faith

A public servant who, while acting for the advancement of public justice, exceeds their lawful power and causes death, believing in good faith that the act was lawful and necessary, is covered by this exception.

Exception 4: Sudden Fight

If death is caused in a sudden fight in the heat of passion during a sudden quarrel, with no premeditation and no undue advantage taken by the accused, the offence is not murder. Premeditation destroys this exception.

Exception 5: Consent

If the person who died was above 18 years of age and had given consent to the risk of death, the offence is not murder. This exception is narrow and rarely applies.

How Courts Decide: The Pulicherla Nagaraju Factor List

In practice, courts do not decide these cases just by reading definitions. They look at the facts and ask whether the accused's mental state was closer to the culpable homicide level or the murder level. The Supreme Court gave a working checklist for this in Pulicherla Nagaraju v. State of Andhra Pradesh (2006).

The factors courts consider include:

• What weapon was used? Was it deadly?

• Did the accused bring the weapon to the scene or pick it up there?

• Was the blow aimed at a vital part of the body?

• How much force was used? One blow or many?

• Was there prior enmity or was this a sudden quarrel?

• Did the accused show premeditation or did things happen in the heat of the moment?

• What was the accused's conduct before, during, and after the act?

No single factor is decisive. Courts weigh them together. A weapon carried to the scene, aimed at the head or chest, with heavy force and prior enmity, points toward murder. A sudden brawl, one unarmed blow, and no premeditation points toward culpable homicide.

One common beginner mistake is thinking that a single blow can never be murder. It can. A single deliberate stab to the heart with a knife that the accused was already carrying satisfies clause (c) of Section 101 and the Virsa Singh test. The number of blows is just one factor, not a rule.

Punishment: Sections 103 and 105 BNS

The punishment depends on whether the killing is murder or culpable homicide not amounting to murder, and in the latter case, on whether it was done with intention or only with knowledge.

Both murder and culpable homicide not amounting to murder are cognizable and non-bailable offences. Both are tried by the Court of Session. 'Non-bailable' does not mean bail is impossible. It means bail is at the court's discretion, not a matter of right.

What is New in BNS: Section 103(2) and Mob Lynching

When the BNS replaced the IPC in 2024, most of the homicide doctrine was simply renumbered. The definitions, the four clauses, the five exceptions, and the core case law all remain valid.

The one genuinely new addition is Section 103(2) BNS. This provision creates a specific offence for group murder or mob lynching. If five or more persons acting together kill someone on the basis of race, caste, community, sex, place of birth, language, personal belief, or any similar ground, every member of the group is liable to punishment ranging from death to a minimum of seven years.

The IPC had no direct equivalent for this. Earlier, such cases were handled by combining murder provisions with common intention or unlawful assembly provisions. Section 103(2) now gives mob lynching cases a dedicated legal home.

Point of View for Judiciary Aspirants

For Prelims

Know the exact BNS section numbers: Section 100 for culpable homicide, Section 101 for murder, Section 103 for punishment of murder, Section 105 for punishment of culpable homicide not amounting to murder. The IPC equivalents (299, 300, 302, 304) are also worth knowing for comparison questions.

Memorise the phrase difference: 'likely to cause death' belongs to Section 100, and 'sufficient in the ordinary course of nature to cause death' belongs to Section 101 clause (c).

For Mains

Use the genus-species framework. Start your answer by saying culpable homicide is the genus and murder is the species. Then define each separately with their mental state requirements. Apply the Pulicherla Nagaraju factor list to any given fact pattern. Always check whether any of the five exceptions apply before concluding the offence is murder.

Six case laws you must know for this topic: Reg. v. Govinda (1877), State of Andhra Pradesh v. Rayavarapu Punnayya (1976), Virsa Singh v. State of Punjab (1958), K.M. Nanavati v. State of Maharashtra (1962), Pulicherla Nagaraju v. State of Andhra Pradesh (2006), and Anbazhagan v. State (2023).

At Aashayein Judiciary, Nitesh Sir covers the BNS criminal law provisions with a focus on exam application. The Target Judiciary Course includes structured notes, previous year questions, and mock tests to help you practise applying these concepts to fact patterns.

For Interview

Be ready to distinguish the two offences using a fact-based scenario. The panel may describe a fight or a sudden death and ask whether it is murder or culpable homicide. Walk them through the mental state analysis, mention the relevant section and exception if any, and cite at least one case law. That approach shows you understand the law, not just the definition.

Frequently Asked Questions

1. What is the difference between culpable homicide and murder under BNS?

Culpable homicide under Section 100 BNS is causing death with intention or knowledge of likely death. Murder under Section 101 BNS is an aggravated form of culpable homicide where the mental state crosses one of four clauses and no exception applies. All murder is culpable homicide, but not all culpable homicide is murder.

2. Which sections in BNS correspond to IPC 299 and 300?

Section 299 IPC is now Section 100 BNS. Section 300 IPC is now Section 101 BNS. The section numbers changed but the legal definitions remain the same.

3. What is culpable homicide not amounting to murder?

It is a culpable homicide where either none of the four murder clauses in Section 101 apply, or one of the five exceptions reduces the offence. It is punished under Section 105 BNS, not Section 103.

4. Is the punishment for murder Section 103 or Section 104 BNS?

Section 103 is the general punishment for murder. Section 104 applies only to murder committed by a person already serving life imprisonment. This is one of the most common errors in notes and online resources.

5. What are the five exceptions to murder under Section 101 BNS?

(1) Grave and sudden provocation, (2) exceeding the right of private defence in good faith, (3) public servant acting in good faith for public justice, (4) sudden fight in the heat of passion without premeditation, (5) consent of a person above 18 years of age.

6. Can a single blow amount to murder?

Yes. If the accused intended to inflict that particular injury, and the injury was objectively sufficient in the ordinary course of nature to cause death, the offence is murder under Section 101 clause (c). The number of blows is one factor among several, not a decisive rule.

7. What is Section 103(2) BNS?

Section 103(2) is the mob lynching provision. It punishes group murder where five or more persons acting together kill someone on identity-based grounds such as race, caste, religion, or language. Each member of the group can be punished with death, life imprisonment, or a minimum of seven years. This provision did not exist in the IPC.

8. What is the Virsa Singh test?

The Virsa Singh test, from Virsa Singh v. State of Punjab (AIR 1958 SC 465), applies to murder under clause (c) of Section 101 BNS. It has four parts: there must be a bodily injury, the nature of the injury must be proved, the accused must have intended that specific injury, and the injury must be objectively sufficient in the ordinary course of nature to cause death. If all four are met, the offence is murder regardless of intent to kill.

Conclusion

Murder and culpable homicide are not two separate crimes. They are two points on the same scale of unlawful killing, with culpable homicide at the base and murder at the top.

The key to understanding and applying this topic correctly in your judiciary exam is to always start with culpable homicide, check whether the mental state rises to one of the four murder clauses, and then check whether any of the five exceptions pull it back down. Use the Pulicherla Nagaraju factor list to apply the law to facts.

Know the right section numbers under BNS. Use Section 103 for murder punishment, Section 105 for culpable homicide not amounting to murder. Never confuse Section 103 with Section 104.

For in-depth criminal law preparation, including BNS provisions, landmark judgments, and answer writing practice, Aashayein Judiciary's Target Judiciary Course under Nitesh Sir offers structured guidance designed specifically for judiciary exam aspirants.