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The IPC 1860 is gone. BNS 2023 governs every Indian criminal charge from 1 July 2024. Here's the section-by-section map a forensic student actually needs, with IPC equivalents and FSL implications.
The Bharatiya Nyaya Sanhita 2023 is the principal substantive criminal statute of India, having replaced the Indian Penal Code 1860 with effect from 1 July 2024. It contains 358 sections across 20 chapters, down from 511 sections in the IPC, and it sits alongside two other replacements: the Bharatiya Nagarik Suraksha Sanhita 2023 (procedural, replacing the CrPC 1973) and the Bharatiya Sakshya Adhiniyam 2023 (evidence, replacing the Indian Evidence Act 1872). For a forensic student the relevant point is that every fresh charge sheet, every FSL requisition, and every court exhibit from July 2024 onward cites BNS section numbers, not IPC ones. Old cases registered before that date continue under IPC; new cases run under BNS.
The legislative arithmetic deserves a contrarian read. 19 IPC sections were deleted, 22 new sections were added, 33 sections saw increased imprisonment, and 83 sections had their fines enhanced. The marketing pitch is "modernisation". The forensic reality is that most of the work, the murder section, the rape section, the theft section, the cheating section, has been renumbered rather than rewritten. The student who panics and starts from scratch is wasting time. The student who learns the IPC-to-BNS mapping table and a small number of genuinely new offences (organised crime, terrorist act, mob lynching, snatching) is doing the actual work.
Numbers first, then narrative.
The BNS 2023 is not a fresh moral code. It is a legislative tightening of an 1860 statute, and a forensic student should treat it as such. The macro changes are quantifiable.
The procedural impact for forensic teams comes through the BNSS rather than the BNS itself. BNSS Section 176(3) makes a forensic expert visit mandatory for every offence punishable by seven years or more, with collection of evidence and audio-video recording of the scene. That obligation, more than any section renumbering, is what has changed FSL workload on the ground.
For a primer on how the scene work itself is structured, our introduction to crime scenes topic walks through the eight types and the first-officer protocol.
The two-element rule, in BNS dialect.
The structure of criminal liability is unchanged from the IPC. An offence still needs an actus reus and a mens rea, and the general defences (insanity, minority, intoxication, accident, private defence, consent, necessity) continue to operate. What changed is the section numbering of the general explanations.
| Concept | IPC 1860 section | BNS 2023 section | Forensic relevance |
|---|---|---|---|
| Definition of 'offence' | Sec 40 | Sec 2(15) | Scope of FSL jurisdiction |
| Voluntarily | Sec 39 | Sec 2(38) | Excludes reflex acts; bears on toxicology cases |
| Dishonestly / fraudulently | Sec 24, 25 | Sec 2(7), 2(20) | Document examination, cyber-fraud |
| Reason to believe | Sec 26 | Sec 2(28) | Receipt of stolen property cases |
| Unsoundness of mind | Sec 84 |
Punishing the road, not just the destination.
Indian criminal law punishes the planning and the trying, not only the doing. The three inchoate categories are abetment, criminal conspiracy, and attempt, and the BNS treats them in three clean blocks.
The forensic implications are sharper than students realise. Consider a conspiracy to assassinate a public figure where the conspirators are arrested before the act. No body, no scene of crime in the usual sense. The evidence is digital, financial, and documentary: WhatsApp chats, weapon-purchase records, CCTV of meetings. The FSL's role is digital forensics on seized devices, voice comparison if audio is available, and toolmark or chemical examination on any weapons or precursors recovered. The conspiracy itself is proved by the pattern of communications, not by a corpus delicti.
The chapter the FSL touches every working day.
Chapter VI of the BNS, Sections 100 to 146, is the chapter that produces most of an FSL's casework. Homicide, hurt, sexual offences, acid attack, abetment of suicide, and negligent acts all sit here. The headline sections are below.
| Offence | BNS section | IPC equivalent | Maximum punishment |
|---|---|---|---|
| Culpable homicide (genus) | Sec 100 | Sec 299 | Life imprisonment or up to 10 years |
| Murder | Sec 101 (definition) / Sec 103 (punishment) | Sec 300 / 302 | Death or life imprisonment |
| Mob lynching | Sec 103(2) | No direct IPC equivalent | Death or life imprisonment |
| Culpable homicide not amounting to murder | Sec 105 | Sec 304 | Up to life imprisonment |
| Death by negligence | Sec 106 | Sec 304A |
From theft to forgery, the chapter that funds white-collar work.
Chapter XVII of the BNS, Sections 303 to 334, covers property offences. The hierarchy from theft up through dacoity is preserved, the cheating sections are simplified, and forgery is renumbered into a tighter block.
| Offence | BNS section | Defining feature | Lead forensic technique |
|---|---|---|---|
| Theft | Sec 303 | Dishonest taking of movable property without consent | Fingerprints, toolmarks, CCTV |
| Extortion | Sec 308 | Inducing consent through fear of injury | Voice analysis, call records |
| Robbery | Sec 309 | Theft or extortion with violence or fear of instant violence | Weapon analysis, wound interpretation |
| Dacoity | Sec 310 | Robbery by five or more persons jointly | Multiple-offender identification, weapon ballistics |
| Snatching (new) | Sec 304 |
Five sections worth their own flashcard.
Five additions are the ones worth committing to memory because they had no clean IPC equivalent and are now standard charge-sheet citations.
The 18 sections you should be able to map in your sleep.
Before any exam, drill these mappings until they are reflexive. Examiners ask for the BNS number, the IPC number, or both. Memorise both columns.
| Offence | IPC 1860 | BNS 2023 |
|---|---|---|
| Punishment for murder | 302 | 103 |
| Definition of murder | 300 | 101 |
| Culpable homicide not amounting to murder | 304 | 105 |
| Causing death by negligence | 304A | 106 |
| Abetment of suicide | 306 | 108 |
| Attempt to murder | 307 | 109 |
| Hurt (punishment) | 323 | 115 |
| Grievous hurt (punishment) |
Three workflow changes you actually have to make.
This is the section examiners use to separate candidates who have read the bare Act from candidates who can apply it. The transition has produced three concrete workflow shifts.
A final, practical note. Carry a BNS-IPC concordance card to the exam if your university permits it; if it doesn't, build one mentally from the eighteen-row mapping table in Section 7 above. The card will save you the seconds you need on a stem that asks for both numbers. For how these section-charged scenes translate into physical-evidence categories, our companion piece on introduction to physical evidence is the natural next read.
| Sec 22 |
| Psychiatric reports under BNS Sec 22 |
| Child under 7 | Sec 82 | Sec 20 | Juvenile cases, with JJ Act 2015 |
| Child 7-12, immature | Sec 83 | Sec 21 | Combined psychiatric and forensic assessment |
| Private defence (right) | Sec 96-106 | Sec 34-44 | Wound interpretation, weapon trajectory |
A small but important shift: the BNS slightly broadens the definition of community service as a punishment, allowing it for first-time petty offences. For forensic professionals the practical effect is that minor-injury or trivial-property matters resolved without FSL involvement may now end in community service rather than imprisonment, which keeps FSL bandwidth available for the seven-plus-year cases.
Attempt offences depend on a doctrinal distinction the courts have refined over decades: preparation versus attempt. Buying a gun to kill X is preparation, walking to X's house with the gun and being intercepted is attempt. The line is drawn at proximity, and the FSL's residue, fingerprint, and weapon-readiness findings often decide which side a particular act falls on.
| Up to 5 years (7 years if hit-and-run) |
| Abetment of suicide | Sec 108 | Sec 306 | Up to 10 years |
| Hurt | Sec 114 (def) / Sec 115 (punish) | Sec 319 / 323 | Up to 1 year |
| Grievous hurt | Sec 117 (def) / Sec 118 (punish) | Sec 320 / 325 | Up to 7 years |
| Rape | Sec 63 (def) / Sec 64 (punish) | Sec 375 / 376 | Rigorous imprisonment 10 years to life |
| Gang rape | Sec 70 | Sec 376D | 20 years to life or death (if minor) |
| Acid attack | Sec 124 | Sec 326A / 326B | Up to life imprisonment plus fine to victim |
A few points the examiners reliably probe:
The investigation always asks the FSL to decide whether the wound pattern, weapon, and trajectory support the murder ingredients or only the lesser culpable homicide ones. The companion piece on introduction to physical evidence covers how those scene findings are categorised and packaged.
| Sudden, quick, or forcible seizure from a person |
| CCTV, mobile-tower triangulation, recovered items |
| Criminal breach of trust | Sec 316 | Dishonest misappropriation of property entrusted | Forensic accounting, document examination |
| Cheating | Sec 318 | Deceiving a person to deliver property or alter conduct | Document examination, digital forensics |
| Criminal trespass | Sec 329 | Entering or remaining on property to commit offence or intimidate | Footwear impressions, glove prints, point-of-entry exam |
| Forgery | Sec 336-338 | Making a false document with intent to deceive | QDE (questioned document examination), ink and paper analysis |
Snatching as a stand-alone offence is the most useful new section to memorise. Before BNS, a chain-snatch was charged under IPC Section 379 (theft) or Section 392 (robbery) depending on whether force was used; the offence is now codified separately under BNS Section 304 with a three-year ceiling. The forensic workflow for snatching, recovered ornaments examined for fingerprints and DNA at the clasp, CCTV gait analysis, and CDR for mobile triangulation, is exactly the workflow the CSM (Crime Scene Management) syllabus prepares you for.
Forgery is where the FSL's questioned-document section earns its keep. The three-section block, Sec 336 (forgery), Sec 337 (forgery for purpose of cheating), Sec 338 (forgery of valuable security or will), tracks IPC 463, 468, and 467 in turn. The examination techniques (oblique lighting, ESDA, FTIR ink analysis, paper-fibre comparison) and the underlying doctrine (the document must be 'false' within Section 335) are textbook NFSU material.
For the SCM (Crime Scene Management) student the forensic-science consequence of these five additions is concentrated in two areas. Digital forensics workload has spiked for Section 111 organised crime and Section 196-197 fake-news cases, because the proof in both is overwhelmingly device-based. Photographic and video evidence workflows, including authenticity examination, have spiked for Section 103(2) mob lynching, because lynching cases live and die on the integrity of the recorded clip.
| 325 |
| 118 |
| Rape (definition / punishment) | 375 / 376 | 63 / 64 |
| Gang rape | 376D | 70 |
| Acid attack | 326A | 124 |
| Theft | 378 / 379 | 303 |
| Robbery | 390 / 392 | 309 |
| Dacoity | 391 / 395 | 310 |
| Criminal breach of trust | 405 / 406 | 316 |
| Cheating | 415 / 420 | 318 |
| Forgery | 463 / 465 | 336 |
| Criminal conspiracy | 120A / 120B | 61 |
The percentages above are indicative, based on NCRB's Crime in India 2023 data adjusted for the BNS chapter scheme. The exact split varies by state and by year, but the chapter VI plus chapter XVII share consistently sits above 75 percent of forensic referrals.