The situation, in human terms

Every December and January, legal publications compile "year in review" lists of the Supreme Court's biggest judgments. A recurring category in these round-ups for 2025 (and now, apparently, similarly for the current cycle) is the "Constitution Bench decision" — a judgment delivered not by the usual two- or three-judge bench that handles the Court's daily docket, but by a larger bench of five or more judges. For a lay reader scrolling through headlines about "Top 10 judgments" or "Constitution Bench decisions of 2025," it is easy to miss why this distinction matters at all. Understanding it is essential to reading Indian constitutional law news intelligently: not every Supreme Court ruling carries the same institutional weight, and the Constitution itself dictates when the heavier machinery must be used.

What happened

Multiple outlets — including SCC Online's ongoing four-part series on "Landmark Constitutional Law Judgments" and Supreme Court Observer's annual "Constitution Bench decisions" review — have been cataloguing the batch of Constitution Bench rulings the Court delivered through 2025, alongside its regular monthly and weekly digests of smaller-bench decisions. These reviews function as a genre of legal journalism: they aggregate, rank and summarise a year's jurisprudence rather than report a single new event. What is actually reportable and explainable here is not any one case (which this piece will not speculate about), but the constitutional rule that produces this category in the first place — the requirement, found in the text of the Constitution, that certain kinds of questions can only be decided by a bench of a minimum size.

The law behind it

The starting point is Article 145 of the Constitution, which empowers the Supreme Court to make rules regulating its own practice and procedure, including rules as to the minimum number of judges who are to sit for the purpose of deciding any case involving a substantial question of law as to the interpretation of the Constitution, or for the purpose of hearing any reference made by the President under Article 143. In practice, this clause has been read to require a minimum of five judges — a "Constitution Bench" — whenever a case genuinely turns on how a constitutional provision should be interpreted, as opposed to a straightforward application of settled law or statute to facts.

This matters because of Article 141, which declares that the law laid down by the Supreme Court is binding on all courts within the territory of India. A five-judge (or larger) bench pronouncement on a constitutional question is not just persuasive; it is binding precedent that smaller benches cannot depart from without themselves referring the question to an equal or larger bench. This is why a two-judge or three-judge bench, on encountering a constitutional question of first impression, or one on which existing precedent seems inconsistent, will often refer the matter "to a larger bench" — deliberately triggering the Article 145(3) mechanism rather than deciding the point itself.

The institutional foundation for all of this is Article 124, which establishes the Supreme Court of India and provides for its composition — the Chief Justice of India and such number of other judges as Parliament may by law prescribe. Because the Court sits in multiple smaller benches simultaneously to manage its enormous docket, constituting a Constitution Bench requires deliberately pulling several judges away from routine work to sit together, which is itself an administrative and procedural decision (traditionally associated with the Chief Justice as master of the roster).

The kinds of cases that reach the Supreme Court and can generate constitutional questions arrive through distinct jurisdictional doors. Article 32 gives the Court original jurisdiction to issue writs for the enforcement of fundamental rights — a citizen can approach the Supreme Court directly when a fundamental right is violated, and Article 32 is itself guaranteed as a fundamental right. Article 131 gives the Court original jurisdiction over disputes between the Union and States or between States themselves. Article 132 and Article 136 govern appellate access: Article 132 permits appeal to the Supreme Court from a High Court judgment involving a substantial question of law as to interpretation of the Constitution, while Article 136 is the residual, discretionary "special leave to appeal" jurisdiction under which the vast majority of the Court's regular caseload — including many matters that never touch a constitutional question — actually arrives. Article 137 additionally gives the Supreme Court power to review its own judgments, subject to rules made under Article 145, which is why some of the more significant Constitution Bench matters are themselves review petitions against earlier rulings. Finally, Article 139A allows the Supreme Court to withdraw and transfer cases involving the same substantial questions of law pending before different High Courts, consolidating them for a single, often constitutionally significant, determination — a further route by which matters end up before a Constitution Bench. Once a Constitution Bench decides a matter, Article 142 allows the Court to pass such orders as are necessary for doing "complete justice" in the cause, a power frequently invoked in the operative directions that follow big constitutional rulings.

How we got here

Before the Constitution's framers settled on this design, there was no equivalent hard-coded requirement in the colonial judicial hierarchy for a minimum bench size on questions of fundamental constitutional interpretation. The framers, aware that the new Supreme Court would be simultaneously an ordinary court of appeal and the final interpreter of a brand-new written Constitution, built Article 145(3) as a safeguard: important constitutional pronouncements would not be left to the chance composition of whichever two judges happened to be sitting that week. Over the decades, as the Court's docket exploded and it began operating almost entirely through small division benches for administrative efficiency, the Constitution Bench became the exception rather than the rule — reserved for foundational questions of fundamental rights, federal structure, the basic structure doctrine, and questions referred because of doubt about the correctness of earlier rulings. A structural consequence of this arrangement, often noted by court-watchers, is that referred questions can queue for years awaiting the constitution of a large enough bench, since doing so means diverting five, seven, or nine sitting judges from the regular docket simultaneously.

What it means in practice

For an ordinary litigant, the practical effect is that a decision from a Constitution Bench carries a different, more durable kind of finality than a routine two-judge ruling: it settles the constitutional question for every court in the country under Article 141, and cannot easily be reopened except by an equal or larger bench, or through the review jurisdiction under Article 137, or in rare instances a curative process. For law students and UPSC or judiciary aspirants, the year-end "Constitution Bench" round-ups are a useful study shortcut: they flag which pronouncements of the year are binding precedent on constitutional interpretation as distinct from the far larger volume of ordinary appellate rulings under Article 136 that, while important to the parties, do not carry the same doctrinal weight. Recognising this distinction is often tested directly — questions on the composition and jurisdiction of the Supreme Court, the meaning of Article 145(3), and the difference between binding precedent and persuasive authority are staple examination material.

What to watch

Readers following the ongoing series of year-in-review pieces should watch for two things going forward: first, whether pending references that have been sitting before smaller benches for years finally get listed before Constitution Benches, since the backlog of such references is a long-standing institutional concern; and second, whether the Court's own administrative practice around constituting these larger benches — a matter within the Chief Justice's roster-setting authority — becomes more predictable or continues on an ad hoc basis. Neither of these is a matter this piece can forecast; they depend on internal court administration and the flow of future litigation, which is precisely why they are worth watching rather than predicting.