How to Read a Criminal Code: Understanding BNS, BNSS and BSA

Criminal law is often encountered at moments of anxiety — a police notice, an FIR, a court summons, or a troubling news report. When people open a criminal statute at such times, they are met with numbered sections, provisos, explanations, and illustrations that appear impenetrable.

Yet criminal codes are not meant to confuse. They are drafted as structured instruments, meant to be read in a particular sequence. Courts, police officers, and lawyers are trained to read them this way. Once that method is understood, the law becomes far more approachable — even for an ordinary citizen.

With the coming into force of the Bharatiya Nyaya Sanhita (BNS), Bharatiya Nagarik Suraksha Sanhita (BNSS) and Bharatiya Sakshya Adhiniyam (BSA), understanding how to read a criminal code has become just as important as understanding what the law says.

Why Criminal Codes Follow a Rigid Structure

Criminal codes are drafted to serve three distinct purposes at once:

To define what conduct is criminal
To prescribe how the State may investigate and prosecute
To guide courts in adjudicating guilt

To achieve this, the law is organised hierarchically — chapters, sections, sub-sections, provisos, explanations and illustrations. This is not accidental drafting. It allows one rule to apply across hundreds of situations without rewriting the same principle repeatedly.

For instance, instead of defining intention or knowledge in every offence, criminal codes define these concepts once and apply them universally. This economy of language is efficient, but it also means the reader must understand the structure to understand the law.

Chapters: Locating Yourself in the Law

Chapters are the broad thematic divisions of a criminal code.

In the IPC — and now in the BNS — offences are grouped logically:

Offences against the State
Offences affecting the human body
Offences against property
Offences relating to documents and evidence

Similarly, the CrPC (and now the BNSS) follows the life cycle of a criminal case — from FIR, to investigation, arrest, trial, judgment and appeal.

When a reader begins with the chapter heading, they immediately know what kind of legal question the provision addresses. Courts routinely rely on chapter headings to resolve ambiguity, treating them as indicators of legislative intent.

What a “Section” Actually Does

A section is the basic unit of criminal law. Each section usually answers three questions:

What conduct is prohibited?
What mental state is required?
What is the legal consequence?

Take the classic example of murder under the IPC (Section 300) or its counterpart under the BNS. The provision does not merely say “causing death is murder”. Instead, it carefully describes when culpable homicide becomes murder, using phrases such as intention to cause death or knowledge that the act is likely to cause death.

This precision is deliberate. Criminal liability does not arise from outcomes alone, but from mental state combined with conduct.

Why Sections Cannot Be Read in Isolation

A common mistake is to read only the offence section and stop there.

For example, a reader may conclude that any act causing death amounts to murder. But criminal law does not operate so simply. The same act may fall under:

Murder
Culpable homicide not amounting to murder
Causing death by negligence
Or no offence at all

The difference often lies outside the offence section, in general exceptions or definitions.

The Supreme Court has repeatedly held that offence provisions must be read together with exceptions, not in isolation. In State of Rajasthan v. Kashi Ram, the Court emphasised that criminal liability arises only when both the offence provision and the absence of applicable exceptions are established.

Sub-sections: Refining the Rule

Sub-sections usually refine the main provision.

For instance, a section may define an offence, while sub-sections specify:

Different punishments for different degrees of harm
Enhanced punishment for repeat offenders
Special procedures in certain circumstances

Legally, sub-sections derive their meaning from the main section. They cannot override it. Courts treat them as clarificatory or supplementary, not independent sources of criminality.

Provisos: Built-in Limitations on Power

A proviso typically begins with “Provided that”. Its function is to limit the reach of the main rule.

For example, procedural laws often give police broad powers, followed by provisos that restrict those powers — such as requiring reasons to be recorded or judicial oversight.

Courts consistently hold that a proviso must be interpreted narrowly, as an exception to the rule, not the rule itself. Reading a proviso before understanding the main provision often leads to confusion.

Explanations: Clarifying Ambiguity

Explanations are among the most important interpretive tools in criminal law.

They do not create new offences. Instead, they clarify:

The scope of a term
The meaning of an expression
The inclusion or exclusion of certain situations

For instance, explanations under evidence law clarify when a statement amounts to a confession, or when conduct can be treated as relevant fact.

Courts treat explanations as part of the main provision, and frequently rely on them to resolve ambiguity. Ignoring them often leads to incomplete understanding.

Illustrations: Law in Real-Life Situations

Illustrations are perhaps the most reader-friendly feature of criminal codes.

An illustration typically presents a short hypothetical:

A commits an act
Under certain circumstances
Leading to a specific legal outcome

For example, illustrations under provisions dealing with intention or knowledge show how similar acts may result in different offences depending on mental state.

Courts have repeatedly held that while illustrations do not override the text, they are valuable guides to legislative intent. For lay readers, illustrations often make abstract legal concepts tangible.

Definitions: Ordinary Words, Special Meanings

Criminal statutes frequently define words that appear ordinary.

For example:

“Document” includes electronic records
“Property” may include movable and immovable, tangible and intangible assets
“Public servant” is defined far more broadly than common usage

Under settled principles of interpretation, statutory definitions override dictionary meanings. Courts apply the defined meaning even if it departs from everyday understanding.

Skipping the definitions section is one of the fastest ways to misread criminal law.

General Exceptions: The Invisible Shield

One of the most misunderstood aspects of criminal law is that not every harmful act is criminal.

General exception chapters deal with:

Accident
Mistake of fact
Insanity
Consent
Acts done in good faith
Necessity

For example, causing harm in self-defence may technically satisfy the ingredients of an offence, yet be protected by an exception.

Courts have consistently held that while the prosecution must prove the offence, the accused may rely on general exceptions to escape liability. Reading offence provisions without these exceptions creates a distorted view of criminality.

Reading Criminal Law as a System, Not Silos

Criminal law operates across three interconnected domains:

Substantive law (what is an offence)
Procedural law (how it is prosecuted)
Evidence law (how it is proved)

Knowing that an act is an offence tells little unless one also understands:

How the FIR is registered
How investigation proceeds
What evidence is admissible
How guilt is proved beyond reasonable doubt

This systemic reading is essential under the new framework of BNS, BNSS and BSA.

How Courts Read Criminal Codes

Courts do not read criminal statutes mechanically. They read them:

As a whole
In harmony with constitutional rights
With sensitivity to consequences

They avoid interpretations that criminalise innocent conduct or grant unchecked power. This purposive approach is why understanding structure matters — it mirrors judicial reasoning.