Supreme Court Rules Arbitral Tribunals Can Award 'Interest on Interest' Under Section 31(7) of the Arbitration and Conciliation Act - 2026-05-27

Bridging the Gap: When Interest Becomes Part of the Principal

In a significant judicial development for commercial arbitration, a three-judge bench of the Supreme Court of India in M/s. Hyder Consulting (UK) Ltd. v. Governor, State of Orissa has clarified the vexed question of whether an arbitral tribunal possesses the authority to grant "interest on interest." The ruling, delivered on November 25, 2014, marks a departure from the restrictive stance previously held in State of Haryana v. S.L. Arora & Co. , reshaping how financial liabilities are calculated in post-award scenarios.

The Backdrop: A Clash of Interpretations

The dispute originated from an arbitral award where the claimant sought post-award interest on the aggregate of the principal amount and the interest accrued pendente lite. At the heart of the matter was Section 31(7) of the Arbitration and Conciliation Act, 1996. The central legal dispute was whether the "sum" mentioned in Section 31(7) refers only to the principal amount or if it encompasses the interest accrued during the pre-award period, thereby permitting compound interest thereafter. While Chief Justice H.L. Dattu maintained the restrictive view that interest upon interest is not permitted, the majority—Justices S.A. Bobde and Abhay Manohar Sapre—advanced a more pragmatic, literal interpretation of the statute.

Arguments: The Battle of Statutory "Sum"

The appellant, represented by Senior Counsel K.K. Venugopal, argued that once an award is made, the interest accrued merges with the principal, becoming a composite "sum." Delaying payment on this total amount would inherently prejudice the claimant, effectively penalizing them for the judgment debtor's delay. Conversely, the State argued that the Act does not explicitly permit compound interest and that "sum" should be strictly confined to the original principal amount.

The Court had to determine if previous judgments, such as McDermott International and ONGC v. M.C. Clelland , were wrongly decided or if they offered a path forward. The Court scrutinized whether the 1996 Act, which is distinct from the 1940 Arbitration Act, should be viewed through a different lens.

Legal Analysis: The Majority's Logic

Justice S.A. Bobde and Justice Abhay Manohar Sapre emphasized a literalist approach. They noted that Section 31(7) of the Act, 1996, deliberately differs from Section 34 of the Code of Civil Procedure (CPC). While the CPC qualifies "sum" with the word "principal," the Arbitration Act purposefully omits this qualifier.

The majority reasoned that if the legislature intended "sum" to mean "principal," it would have explicitly stated so. By omitting it, the legislation allows the arbitral tribunal to treat the aggregated amount of principal and pre-award interest as the "sum" for the purpose of calculating post-award interest.

Key Observations

The judgment features critical insights on statutory interpretation:

> "The 'sum' awarded may be principal amount and such interest as the Arbitral Tribunal deems fit. If no interest is awarded, the 'sum' comprises only the principal." — Justice S.A. Bobde

> "Once the interest is 'included in the sum' for which the award is made, the original sum and the interest component cannot be segregated and be seen independent of each other." — Justice Abhay Manohar Sapre

> "Where the language of the Act is clear and explicit, the court must give effect to it, whatever may be the consequences, for in that case the words of the statute speak the intention of the Legislature." — Referencing the principle from Ganga Prasad Verma (Dr.) v. State of Bihar

The Path Forward: Implications for Arbitration

The Court ruled that the arbitral tribunal is indeed empowered to award interest on the aggregate amount. By clarifying that the interest component loses its separate identity upon inclusion in the award "sum," the Supreme Court has provided much-needed certainty for corporations and entities involved in long-term contracts. This decision effectively curtails the incentive for judgment debtors to delay payments, as the post-award interest will now apply to the total amount determined by the tribunal. This ruling serves as a vital precedent for future arbitration cases, prioritizing both the literal interpretation of the law and the practical requirements of financial justice in commercial litigation.