New Criminal Laws: BNS, BNSS and BSA Explained

1. Start with the incident date and the case stage

If you receive a police notice or need to report an offence, first record when the alleged conduct happened. Then collect the complaint, FIR, notices and any court orders. These documents help identify both the substantive offence and the procedural framework. Do not assume that a newly registered FIR necessarily means every part of the new law applies.

The Bharatiya Nyaya Sanhita, 2023, the Bharatiya Nagarik Suraksha Sanhita, 2023, and the Bharatiya Sakshya Adhiniyam, 2023, took effect on 1 July 2024, subject to notified exceptions. Offences before that date remain under the old substantive law. Conduct spanning the changeover needs individual analysis rather than a mechanical change of section numbers.

2. What BNS replaces: offences and punishments

The Bharatiya Nyaya Sanhita, or BNS, replaces the Indian Penal Code, or IPC. It tells you what conduct is an offence and what punishment may follow conviction. Familiar offences continue, but their numbering, wording or structure may differ. A comparison chart is useful for orientation, not a substitute for reading the actual provision.

For example, punishment for murder is in BNS section 103(1) [IPC section 302]. Attempt to murder is in BNS section 109 [IPC section 307]. Cheating that dishonestly induces delivery of property is in BNS section 318(4) [IPC section 420]. Cruelty by a husband or his relative appears in BNS sections 85 and 86 [IPC section 498A].

Not every old section has a simple one-to-one replacement. Check the precise subsection, the alleged acts and the offence date before accepting a label in a message, notice or online article.

Need help with this? Read our guide to BNS Sections Explorer & IPC Cross-Reference Directory.

3. What BNSS replaces: investigation and court procedure

The Bharatiya Nagarik Suraksha Sanhita, or BNSS, replaces the Code of Criminal Procedure, or CrPC. It governs matters such as reporting offences, investigation, arrest, remand, bail and trial. It does not itself establish that an accused person committed the alleged offence. Police powers remain subject to statutory conditions and constitutional protections.

FIR information is addressed in BNSS section 173 [CrPC section 154]. Police arrest powers and appearance notices are addressed in BNSS section 35 [CrPC sections 41 and 41A]. Anticipatory bail is addressed in BNSS section 482 [CrPC section 438]. These are different legal stages, so registration of an FIR does not automatically justify arrest or require refusal of bail.

Ask which document you have received: an invitation to assist, a statutory appearance notice, a summons or an arrest-related document. The required response depends on that distinction.

4. What BSA replaces: proving facts in court

The Bharatiya Sakshya Adhiniyam, or BSA, replaces the Indian Evidence Act, 1872. It governs how relevant facts may be proved. Electronic material matters in everyday cases: chats, payment records, emails, recordings and camera footage may help establish a timeline. Their existence alone does not establish authenticity, context or the truth of every statement they contain.

BSA section 63 [Evidence Act section 65B] addresses admissibility requirements for computer outputs. The correct certificate and supporting particulars can matter. Preserve the original device and files where possible, including surrounding messages and available metadata. Do not crop, edit or forward the only copy and then delete the original.

A screenshot can be useful at the complaint stage, but its eventual evidentiary treatment requires separate attention. Ask a lawyer about preservation and certification before replacing a phone or deleting an account.

5. FIR access, electronic reporting and arrest safeguards

BNSS section 173(1) [CrPC section 154(1)] expressly permits information about a cognizable offence to be given irrespective of where it occurred. This supports Zero FIR access. Information may also be given electronically, but electronic information must be signed within three days. An online acknowledgement is not necessarily a registered FIR; request the number and free copy.

For offences punishable with three years or more but less than seven years, BNSS section 173(3) [a new statutory preliminary-inquiry provision without an identical CrPC counterpart] permits a qualifying preliminary inquiry with prior permission from an officer not below Deputy Superintendent of Police. It must be completed within fourteen days. This is not a blanket permission to delay every complaint.

Arrest safeguards continue to matter. Where the relevant statutory conditions apply, police must assess necessity rather than arrest simply because a complaint names someone. Cooperate with lawful notices and obtain advice promptly.

6. Why older cases may continue under older procedure

The transition is not simply old incident equals old procedure and new incident equals new procedure. BNSS section 531 [the repeal-and-savings provision replacing the CrPC framework] preserves specified pending appeals, applications, trials, inquiries and investigations under the CrPC. BSA section 170 similarly preserves specified pending proceedings under the Evidence Act.

A pre-July offence reported after commencement can therefore raise a different procedural question from an investigation already pending on commencement. Article 20(1) of the Constitution also protects against retrospective criminalisation and a greater punishment than the law permitted when the act occurred. Do not infer the answer solely from the date printed on a charge sheet.

Give your lawyer the incident dates, FIR registration date and the procedural history. Ask for a clear explanation of which law governs the offence, procedure and evidence separately.

7. A practical checklist for citizens

For a complainant, begin with safety, medical treatment where needed, a factual chronology and preservation of supporting records. For someone accused, preserve potentially helpful evidence, obtain the FIR or complaint where available, and respond through lawful channels. Neither side should contact witnesses to pressure them or circulate allegations as established facts.

Keep a dated record of submissions and acknowledgements. Check official statutory texts rather than relying only on social-media section charts. If legal fees are a barrier, contact the District Legal Services Authority to check eligibility for free assistance. People in custody and women are among the categories recognised under the legal-aid framework.

The new laws change important processes, but they do not remove the need to prove allegations or follow fair procedure. Treat this overview as a starting point, not advice on the outcome of an individual case.

Can police custody be split across different remand dates?

BNSS section 187 [CrPC section 167] changes the timing within which authorised police custody may be taken during investigation. The aggregate ordinary limit remains fifteen days, but those days can be authorised in parts within the initial forty days of a sixty-day detention framework, or the initial sixty days of a ninety-day framework. This is not permission for forty or sixty days of police custody. Distinguishing the total custody allowance from the window for using it is essential when reading a remand application or explaining an order to relatives.

Families should keep a custody chart recording arrest, production before the magistrate, each remand order and whether custody is police or judicial. Counsel can compare the requested period with custody already used and challenge an unsupported request. A judicial-custody order does not mean the investigation has finished, and a later request for police custody must still satisfy the governing provision and judicial scrutiny. These changes concern cases governed by the BNSS; where a pending investigation is saved under the CrPC, simply importing the new timing rule would be unsafe.

When can an undertrial ask for release based on time spent in custody?

BNSS section 479 [CrPC section 436A] addresses detention during investigation, inquiry or trial, not remission after conviction. Subject to its conditions, the provision uses half the maximum imprisonment period as a release threshold, with a one-third threshold for qualifying first-time offenders who have never previously been convicted. It excludes offences for which death or life imprisonment is one of the specified punishments. The calculation therefore begins with the precise offence and maximum sentence, not an assumption that anyone who has spent several months in jail must automatically qualify for release.

The BNSS also restricts release under this provision where investigation, inquiry or trial in more than one offence or in multiple cases is pending. Delay attributable to the accused and the provision’s other qualifications need examination. Obtain the custody certificate, details of every pending case and an accurate history of previous convictions before seeking relief. The jail superintendent has a statutory application-related responsibility at the relevant threshold. Failure to satisfy section 479 does not, by itself, decide whether ordinary bail can be granted on other lawful grounds in the individual case.