The BNS/BNSS Transition: What Changes for Pending Criminal Trials
The Bharatiya Nyaya Sanhita, the Bharatiya Nagarik Suraksha Sanhita and the Bharatiya Sakshya Adhiniyam came into force on 1 July 2024, repealing the Indian Penal Code, the Code of Criminal Procedure and the Indian Evidence Act. The transition is procedurally complex — and pending trials are caught in the middle.
The transitional architecture
Section 531 of the Bharatiya Nagarik Suraksha Sanhita, 2023 governs the transition from the CrPC. The provision is layered: investigations, inquiries, trials, appeals, applications and proceedings pending immediately before the commencement of the BNSS continue to be dealt with under the CrPC, "as if this Sanhita had not come into force". The cut-off is the date of commencement — 1 July 2024.
The corresponding provision in the BNS, Section 358, repeals the Indian Penal Code while preserving the General Clauses Act, 1897 protection for offences committed before commencement. The Bharatiya Sakshya Adhiniyam, by Section 170, similarly repeals the Indian Evidence Act, 1872 with a transitional saving for pending matters.
The combined effect: an offence committed before 1 July 2024 is governed by the IPC (substantive law) and the CrPC (procedural law); an offence committed on or after 1 July 2024 is governed by the BNS and the BNSS.
Where the line is clean
For trials commenced and concluded under the CrPC, the position is settled: the case continues, the appeal lies under the CrPC, and the limitation framework is undisturbed. The same is true at the other end — offences committed entirely after 1 July 2024 fall squarely within the BNS/BNSS framework.
Where the line is contested
Three categories of cases sit on the seam.
First, investigations registered before 1 July 2024 but where charge-sheet is filed after. The Section 531 saving is for "investigations pending" before commencement; the FIR registered before commencement therefore continues under the CrPC. The charge-sheet filed thereafter is a CrPC charge-sheet. The Court before which it is filed, however, may be a BNSS-constituted Court — typically with no practical effect, since most courts continue under the same constitution.
Second, continuing offences that span the cut-off. A conspiracy that commenced before 1 July 2024 but continued thereafter raises a direct question of which substantive statute applies. The General Clauses Act protection works for offences "committed" before the repeal; for continuing offences, the better view is that the IPC governs the pre-1 July component and the BNS the post-1 July component, with the prosecution required to plead and prove each component under the corresponding statute.
Third, appellate proceedings filed after 1 July 2024 against pre-commencement orders. The Section 531 saving covers "appeals" pending before commencement; appeals filed after commencement against pre-commencement orders are not, strictly, "pending" before commencement. The procedural framework for the appeal is therefore the BNSS, even though the underlying trial was conducted under the CrPC.
The drafting consequences
The bilingual position of the new code — provision-numbering does not align between the IPC and the BNS, or between the CrPC and the BNSS — has practical consequences for drafting. A reference in a pleading to "Section 482 CrPC" must, after 1 July 2024, be read as a reference to the new Section 528 BNSS. Quashing petitions, bail applications under Section 439 CrPC (now Section 483 BNSS), and revision petitions under Sections 397/401 CrPC (now Section 438 BNSS) all carry over the substance but require updated provision-references.
The cause-title of pending matters does not change — a CrPC matter remains a CrPC matter. New matters take the BNSS provision-references. Mixed proceedings — typically arising on transfer of an old matter to a new bench — require careful pleading of the source statute for each prayer.
The Section 531 saving is generous. The drafting that gives it effect is not: each pleading must identify the source statute for the substantive offence, the source statute for the procedural relief, and the basis for any cross-reference between them.
Substantive changes that bite
The BNS introduces several substantive changes that do not have direct CrPC predecessors. The new offence of "organised crime" under Section 111 BNS, the expanded definition of "terrorism" under Section 113 BNS, and the new offences relating to "petty organised crime" under Section 112 BNS apply only to acts committed after commencement. For pending matters, the corresponding charges (under the IPC, the UAPA or relevant special statutes) continue.
The BNSS introduces structural reforms — mandatory videography of search and seizure, new timelines for investigation, mandatory forensic examination for offences punishable with seven years or more — that apply prospectively. Investigations registered before 1 July 2024 are not retrofitted to the new procedural standards.
Working observations
Three observations from current practice. First: every pleading filed after 1 July 2024 must identify the date of the offence at the start of the synopsis, because the date determines the entire procedural and substantive framework of the matter. Second: where the offence spans the cut-off date, the charge-sheet must plead each component separately with the corresponding statute. Third: bail applications, quashing petitions, and revisions filed after commencement must use BNSS provision-references — but must also cross-reference the corresponding CrPC provision under which the underlying matter was registered, to avoid registry objections.
For practitioners, the discipline is clear: read the date, identify the source statute, plead with the correct provision-references, and respect the saving clauses. The transition is, on its face, mechanical — but the cases sitting on the seam require attentive drafting that the new framework does not permit casual handling. For a related discussion of pleadings discipline under the post-2018 commercial framework, see our note on the Commercial Courts Act; the procedural diligence required there transfers directly to the BNS/BNSS transition.