Section 21 exempts a child above seven and under twelve years of age from criminal responsibility, but only where that particular child had not attained sufficient maturity of understanding to assess the nature and consequences of his conduct on that specific occasion.
Verified against the National Crime Records Bureau's official BNS–IPC concordance (Sankalan Portal) and cross-checked directly against the bare text of both Acts. Section 21 is marked Exact correspondence:
| BNS 21 | Covers | IPC, 1860 equivalent | Category |
|---|---|---|---|
| 21 | Act of a child above seven and under twelve of immature understanding | S.83 (same rule, trivial added wording) | Exact |
Comparing the bare text directly, BNS Section 21 reproduces old IPC Section 83's rule without substantive change. The only textual difference found is that the BNS version adds the clarifying words “years of age” after “twelve,” where the IPC version simply said “under twelve” — a wording clarification only, with the same legal meaning.
Nothing is an offence which is done by a child above seven years of age and under twelve years of age, who has not attained sufficient maturity of understanding to judge of the nature and consequences of his conduct on that occasion.
Source: Bharatiya Nyaya Sanhita, 2023 (Act No. 45 of 2023), as published in the Gazette of India Extraordinary.
Where Section 20 draws an absolute, automatic line at age seven, Section 21 works differently for the next age band, seven to twelve. Being within this age range is necessary but not sufficient on its own; the exemption only applies where the specific child, on the specific occasion in question, had not attained sufficient maturity of understanding to assess the nature and consequences of the conduct. This makes the inquiry individualised and fact-specific: two children of the same age might be treated differently depending on their actual level of development, understanding, and the particular circumstances of the act in question. Relevant considerations typically include the child's general level of intellectual and moral development, whether the child appreciated that the act was wrong (not merely that it was forbidden), any attempt to conceal the act or its effects, and the nature of the act itself.
A twelve-year-old boy, acting alongside his two elder brothers, was convicted of murder for his part in a fatal attack; the High Court reduced this to a lesser offence given the boy's age. The Supreme Court, dealing with what is now Section 21's predecessor (old IPC Section 83), held that immaturity for a child between seven and twelve is not measured mechanically by counting years, but by the actual strength of that particular child's understanding and judgment — an individualised inquiry into whether the child genuinely grasped the nature and gravity of the act, not a rule that simply turns on the calendar. The Court went on to use the case to press for a more welfare-oriented, rehabilitative approach to sentencing young offenders generally.
Currency check: decided 1977, interpreting the identically-worded predecessor provision (IPC Section 83); the individualised maturity-of-understanding test it states has not been displaced and is routinely cited for this proposition.
No. Unlike Section 20's absolute cut-off below age seven, this section requires proof that the specific child, on the specific occasion, had not attained sufficient maturity of understanding to assess the nature and consequences of the conduct.
Typically, the child's general level of development, whether the child appreciated the act was wrong, any attempt to conceal the act, and the nature of the act itself — assessed on the facts of that particular occasion.
The act is not an offence at all — it is a complete defence, not merely a factor reducing punishment.