On 1 July 2024, India’s primary criminal law framework changed for the first time in over 160 years. The Indian Penal Code, 1860 — the backbone of criminal law since colonial times — was replaced by the Bharatiya Nyaya Sanhita (BNS), 2023, alongside two companion statutes governing criminal procedure and evidence. For lawyers, litigants, and ordinary citizens alike, understanding what changed, what stayed the same, and how the new numbering works has become essential. This guide provides a comprehensive explainer.

The Three New Criminal Law Statutes

The BNS did not arrive alone. It is part of a package of three new laws that together replaced the earlier framework:

1. Bharatiya Nyaya Sanhita (BNS), 2023 – Replaces the Indian Penal Code (IPC), 1860; defines offences and prescribes punishments.
2. Bharatiya Nagarik Suraksha Sanhita (BNSS), 2023 – Replaces the Code of Criminal Procedure (CrPC), 1973; governs criminal procedure, including arrest, bail, investigation, and trial.
3. Bharatiya Sakshya Adhiniyam (BSA), 2023 – Replaces the Indian Evidence Act, 1872; governs rules of evidence in criminal and civil proceedings.

All three came into force on 1 July 2024, and apply to offences committed and proceedings initiated on or after that date. Offences committed before that date continue to be governed by the IPC, CrPC, and Evidence Act for the purposes of that specific case, even if the trial or appeal continues after the changeover — a point that frequently causes confusion.

Why Was the IPC Replaced?

The stated objectives behind the overhaul included:

• Removing colonial-era provisions considered outdated or no longer reflective of India’s current social and constitutional values
• Introducing new offences to address contemporary issues, including organized crime, terrorism, and certain offences against women and children that were previously addressed through scattered special legislation
• Renumbering and reorganizing offences for what is intended to be greater logical coherence
• Emphasizing time-bound investigation, trial, and judgment delivery to reduce delays in the criminal justice system

Key Structural Changes

Renumbering of Familiar Provisions

Many of the most commonly cited IPC sections have been renumbered under the BNS. Some of the most significant changes include:

This is not an exhaustive list — nearly every commonly used section has shifted, which is why lawyers, police officers, and litigants alike are now expected to reference both the old and new numbers, particularly for cases straddling the transition date.

New and Expanded Offences

The BNS introduced several new provisions not present in identical form under the IPC, including:

• Organized crime – A dedicated provision addressing organized crime syndicates, a category previously handled mainly through state-specific special legislation (such as MCOCA in Maharashtra).
• Terrorist acts – A consolidated definition and punishment framework for terrorist acts within the general criminal code itself, rather than relying solely on special legislation.
• Mob lynching – Specific provisions addressing murder or grievous hurt committed by a group of five or more persons acting on grounds such as race, caste, community, sex, place of birth, language, or personal belief.
• Deceitful means to have sexual intercourse – New clarifications addressing sexual relations induced by deceit, including false promise of marriage, as a specific category.
• Snatching – A newly defined and distinctly punishable offence, addressing the common but previously ambiguously categorized crime of theft involving sudden or forcible snatching.

Removal or Reworking of Certain Provisions

• Sedition in its earlier form (Section 124A, IPC) has been reworked into a new provision addressing acts endangering the sovereignty, unity, and integrity of India, with revised language and scope — a change that has itself drawn considerable public and legal debate.
• Certain provisions considered redundant or inconsistent with evolving constitutional interpretation have been removed or substantially modified.

Key Changes Under the BNSS (Procedure)

While the BNS deals with offences and punishments, several important procedural changes affecting how criminal cases actually proceed came through the BNSS:

• Time-bound investigation and trial – Provisions emphasizing completion of investigation, framing of charges, and judgment within specified timeframes for many categories of offences.
• Mandatory forensic investigation – For offences punishable with seven years or more imprisonment, forensic experts are required to visit the crime scene and collect evidence, with videography of the process in specified circumstances.
• Expanded use of technology – Provisions enabling electronic filing, service of summons via electronic means, and recording of statements through audio-video means in appropriate cases.
• Community service as a form of punishment for specified minor offences, introduced as an alternative to short-term imprisonment or fine alone.
• Revised anticipatory bail and regular bail provisions, largely retaining the substance of the earlier CrPC framework under renumbered sections (for example, anticipatory bail moves from Section 438, CrPC to Section 482, BNSS).

Key Changes Under the BSA (Evidence)

The Bharatiya Sakshya Adhiniyam largely retains the structure of the Indian Evidence Act, 1872, with updates including:

• Express recognition of electronic and digital records as documentary evidence, with clarified admissibility provisions suited to a digital-first investigation and trial process
• Renumbering of familiar evidentiary provisions (for example, provisions on relevancy of facts, dying declarations, and expert evidence)

Does the New Law Apply Retrospectively?

No. As a general principle, criminal law is not applied retrospectively to the disadvantage of the accused. Offences committed before 1 July 2024 continue to be governed substantively by the IPC (for the definition of the offence and punishment), even though procedural aspects of an ongoing case after that date may, in certain respects, be influenced by the BNSS depending on the specific transitional provisions and judicial interpretation. This is precisely why FIRs, chargesheets, and judgments will continue to cite both frameworks for a transitional period, depending on when the alleged offence took place.

Practical Implications for Litigants

• Always check the date of the alleged offence before assuming which section applies — this is not a mere formality, since the substantive definition and punishment can differ between the old and new provisions.
• Expect both numbering systems to coexist in FIRs, judgments, and legal commentary for several years, as older cases continue through the appellate process.
• New categories of offences (organized crime, terrorist acts, mob lynching) may now be invoked in situations that previously required resorting to special, state-specific legislation.
• Time-bound procedural requirements under the BNSS may, in principle, lead to faster investigation and trial timelines, though actual on-ground implementation will depend on institutional capacity across states.

Common Misconceptions

• “The BNS abolishes the IPC’s substance entirely.” Largely untrue — the majority of core offences (theft, hurt, criminal breach of trust, most property and bodily offences) retain substantially similar definitions, simply renumbered and, in some cases, refined in language.
• “All old FIRs are now void.” Not true — FIRs and cases registered before 1 July 2024 continue under the IPC/CrPC/Evidence Act framework for that specific matter.
• “Sedition has been abolished.” Not accurate — it has been reworked into a differently worded provision addressing similar concerns, not removed outright; the scope and interpretation of the new provision continue to be examined by courts.

Why This Matters for Anyone Involved in a Legal Matter

Whether you are dealing with an ongoing case, considering filing a complaint, or simply trying to understand a notice or summons you’ve received, correctly identifying whether the IPC or BNS framework applies — and under which specific section — is the essential first step. Given how extensively the numbering has changed, even experienced professionals routinely cross-reference both systems, and litigants should expect their legal documents to increasingly reference the BNS/BNSS/BSA framework as more cases arise under the new law.

When Should You Consult a Lawyer?

• To correctly identify which framework (IPC/CrPC/Evidence Act or BNS/BNSS/BSA) applies to your specific matter based on the date of the alleged offence
• To understand how a newly introduced offence (organized crime, mob lynching, deceitful sexual relations) might apply to a specific fact pattern
• To assess how procedural changes under the BNSS — including time-bound investigation and forensic requirements — might affect an ongoing case
• To get a clear, updated reading of a notice, FIR, or chargesheet citing the new numbering system

Conclusion

The Bharatiya Nyaya Sanhita, together with the BNSS and BSA, represents the most significant overhaul of India’s criminal law framework since independence. While much of the underlying substance of familiar offences remains recognizable, the renumbering, new offence categories, and procedural changes mean that anyone dealing with a criminal matter — whether as a complainant, an accused, or simply someone trying to understand their rights — needs updated, accurate guidance rather than relying on old references to IPC sections alone.

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