Ratio Decidendi in Plurality Judgments

The ratio decidendi is the legal principle necessary for deciding a case, as distinguished from incidental observations. In a plurality judgment, judges agree on the outcome but give separate reasons, so the binding rule must be identified from the reasoning supported by the required majority.

Constitutional foundation

Under Article 141, the law declared by the Supreme Court is binding on all courts within India. What binds is the legal principle forming the basis of the decision, not every statement appearing in the opinions.

Identifying the binding ratio

The opinions must be read together in light of the issues, material facts and final relief. The exercise is proposition-specific: judicial votes are counted for each legal proposition rather than merely for the final outcome.

• A proposition is binding when it was necessary to decide a material issue and received the assent of a majority of the Bench.
• Where separate opinions overlap, their common legal proposition constitutes the ratio, even if the judges differ in their wider reasoning.
• For example, on a five-judge Bench, a proposition accepted by at least three judges may bind, although each judge may have written separately.
• The operative result alone cannot establish a broad ratio if the judges reached it through mutually incompatible legal routes.

Limits of precedential force

As emphasized in State of Orissa v. Sudhansu Sekhar Misra, a decision is an authority for what it actually decides. Statements unnecessary for the result are obiter dicta and may be persuasive but are not binding.

• If no legal proposition commands majority support, no individual concurrence becomes binding merely because it appears to offer the narrowest reasoning.
• The common principle must be understood against the case's facts and issues; isolated sentences and headnotes cannot substitute for reading the opinions.
• Any identified ratio remains subject to the rule that a decision of a larger Bench prevails over an inconsistent decision of a smaller Bench.