An arbitral award is meant to be final. Section 34 of the Arbitration and Conciliation Act, 1996 is the single, narrow window through which a losing party may ask a court to set that award aside. It is not an appeal: a court hearing a Section 34 petition does not re-weigh evidence, re-interpret the contract, or substitute its own commercial wisdom for the arbitrator's. The grounds are exhaustively listed, the limitation period is rigid, and decades of Supreme Court jurisprudence have steadily pruned back the one ground that once threatened to swallow the rule — "public policy of India". This article maps the statutory grounds, traces the rise and retreat of ONGC v. Saw Pipes, explains the post-2015 settlement, and addresses the long-running question of whether a court may modify, rather than merely annul, an award.
Section 34 is recourse, not appeal
Section 34 is captioned "Application for setting aside arbitral award" and is the exclusive recourse against a domestic award. Its opening words — "Recourse to a Court against an arbitral award may be made only by an application for setting aside" — deliberately use the word recourse rather than appeal. The distinction is the spine of the whole provision. A court exercising Section 34 jurisdiction sits in a supervisory, not appellate, capacity. It cannot reappreciate evidence, cannot correct an error of fact, and cannot interfere merely because it would have reached a different conclusion on the same material.
This restraint flows from Section 5 of the Act, which caps judicial intervention, and from the legislative policy of minimal interference that animates the entire 1996 statute. The Supreme Court restated the position cleanly in MMTC Ltd. v. Vedanta Ltd., (2019) 4 SCC 163, holding that a court under Section 34 "does not sit in appeal over the arbitral award" and that interference is confined to awards that are arbitrary, capricious or perverse, that shock the conscience of the court, or that suffer from an illegality going to the root of the matter rather than a trivial one. For the statutory architecture in which this sits, see our note on the introduction to the Arbitration and Conciliation Act, 1996 and the Arbitration notes hub.
The exhaustive grounds under Section 34(2)
Section 34(2) lists the grounds, and the list is closed — no ground outside it can be invoked. They fall into two clusters. Under Section 34(2)(a), the party seeking to set aside must furnish proof of one of the following: (i) a party was under some incapacity; (ii) the arbitration agreement is not valid under the governing law; (iii) the applicant was not given proper notice of the appointment of the arbitrator or of the proceedings, or was otherwise unable to present its case; (iv) the award deals with a dispute not contemplated by, or not falling within the terms of, the submission to arbitration, or contains decisions on matters beyond the scope of the submission; or (v) the composition of the tribunal or the arbitral procedure was not in accordance with the parties' agreement (or, failing such agreement, not in accordance with Part I).
The burden under clause (a) is significant: the applicant must establish the ground on the basis of the record of the arbitral tribunal, and following the 2019 Amendment the words "furnishes proof" were softened to "establishes on the basis of the record of the arbitral tribunal", confirming that fresh evidence is generally impermissible at the Section 34 stage. The grounds in clause (a) are largely procedural and jurisdictional — they police how the arbitration was conducted, not whether the arbitrator reached the right answer on the facts. Ground (a)(iii), for instance, protects the audi alteram partem principle: a party denied notice or a fair opportunity to present its case has been denied natural justice, a defect that strikes at the legitimacy of the whole process.
Under Section 34(2)(b), the court may on its own set aside an award if it finds that (i) the subject-matter of the dispute is not capable of settlement by arbitration under Indian law — the question of arbitrability; or (ii) the award is in conflict with the public policy of India. Ground (b) does not require the applicant to discharge a burden of proof in the same way; the court may act suo motu because both arbitrability and public policy implicate interests beyond the parties. The validity of the underlying agreement, central to ground (a)(ii), is treated in detail in our note on the form and validity of the arbitration agreement.
Awards beyond the submission and severability
Ground (a)(iv) targets an award that travels beyond the dispute referred. An arbitrator derives jurisdiction wholly from the agreement; deciding a question the parties never submitted is an excess of authority. The proviso to Section 34(2)(a)(iv) builds in a doctrine of severability: if decisions on matters submitted to arbitration can be separated from those that were not, only the part dealing with matters not submitted may be set aside, leaving the rest of the award intact.
This severability principle later became one of the recognised gateways through which courts may do more than wholly annul an award. The Constitution Bench in Gayatri Balasamy v. ISG Novasoft Technologies Ltd., 2025 INSC 605, expressly identified the severance of an invalid part as one of the limited situations in which an award may be partially preserved — a point taken up below in the discussion on modification.
Public policy: the Renusagar foundation
The most litigated ground is "public policy of India". Its content was first defined — in the foreign-award context under the old Foreign Awards (Recognition and Enforcement) Act, 1961 — by the Constitution Bench in Renusagar Power Co. Ltd. v. General Electric Co., AIR 1994 SC 860 (1994 Supp (1) SCC 644). The Court read "public policy" narrowly, holding that an award would offend it only where enforcement was contrary to (i) the fundamental policy of Indian law, (ii) the interests of India, or (iii) justice or morality. Crucially, Renusagar held that a mere contravention of Indian law, or an error in the application of law, does not by itself attract the public-policy bar; otherwise every enforcement court would be turned into an appellate forum reviewing the merits, defeating the New York Convention's pro-enforcement object. This pro-enforcement, narrow reading was the original benchmark, and it remains the touchstone for foreign awards to this day. The phrase "fundamental policy of Indian law", left somewhat open-textured in Renusagar, would later become the battleground on which the scope of Section 34 was fought.
Saw Pipes and the birth of patent illegality
The narrow Renusagar test was unsettled for domestic awards by Oil & Natural Gas Corporation Ltd. v. Saw Pipes Ltd., (2003) 5 SCC 705. There the Supreme Court held that when a court examines a domestic award under Section 34, "public policy of India" must be given a wider meaning than in the enforcement context, and added a fourth limb: patent illegality. An award could be set aside if it was contrary to the substantive provisions of law, contrary to the provisions of the Act itself, or against the terms of the contract. The dispute in Saw Pipes itself concerned liquidated damages for delayed delivery, and the Court found the tribunal had ignored Sections 73 and 74 of the Contract Act — an error the Court treated as patent illegality reachable through the public-policy gateway.
The reach of "fundamental policy of Indian law" was then stretched further in ONGC Ltd. v. Western Geco International Ltd., (2014) 9 SCC 263, which read into that phrase three "juristic principles" — a judicial approach, compliance with natural justice, and freedom from Wednesbury perversity. By importing the administrative-law standard of Wednesbury unreasonableness into Section 34, Western Geco effectively invited courts to test whether an arbitrator's conclusion was one a reasonable person could have reached — a standard close to merits review. The combined effect of Saw Pipes and Western Geco was that courts began to scrutinise the substance of awards, and the finality that arbitration promised was widely seen to be eroded. The expansion was heavily criticised, including by the Law Commission of India in its 246th Report, for opening the floodgates to judicial intervention and undermining India's standing as an arbitration-friendly seat.
Shri Lal Mahal and the foreign-award firewall
Even before the legislature stepped in, the Supreme Court began rebuilding the wall around foreign awards. In Shri Lal Mahal Ltd. v. Progetto Grano Spa, (2014) 2 SCC 433, the Court held that the expanded "patent illegality" head from Saw Pipes has no application to the enforcement of foreign awards under Section 48. For foreign awards, "public policy" reverts to the narrow Renusagar triad. Shri Lal Mahal thus overruled the contrary view taken in Phulchand Exports v. O.O.O. Patriot and restored the pro-enforcement bias for international awards, leaving the broad domestic test of Saw Pipes standing only until Parliament intervened. The grounds for refusing enforcement of foreign awards are taken up separately; the contrast with domestic challenge under Section 34 is the key examinable distinction.
The 2015 Amendment: codifying the narrow test
The Arbitration and Conciliation (Amendment) Act, 2015 rewrote the public-policy ground to curb the Saw Pipes expansion. Two new Explanations to Section 34(2)(b) now provide that an award conflicts with the public policy of India only if (i) the making of the award was induced or affected by fraud or corruption (or violated Sections 75 or 81 on confidentiality); (ii) it contravenes the fundamental policy of Indian law; or (iii) it conflicts with the most basic notions of morality or justice. Explanation 2 expressly states that the test of whether there is a contravention of the fundamental policy of Indian law shall not entail a review on the merits of the dispute.
A separate sub-section, Section 34(2A), introduced patent illegality as a distinct and domestic-only ground: a purely domestic award (not an international commercial arbitration) may be set aside if the court finds it vitiated by patent illegality appearing on the face of the award. But the same sub-section carves out two safeguards — an award shall not be set aside merely on the ground of an erroneous application of the law, or by reappreciation of evidence. The legislative effect was to statutorily reverse the merits-review trajectory of Saw Pipes and Western Geco.
Associate Builders: the judicial synthesis
Decided just before the amendment, Associate Builders v. Delhi Development Authority, (2015) 3 SCC 49, remains the most cited synthesis of the public-policy and patent-illegality grounds. Justice Nariman explained that patent illegality "appearing on the face of the award" refers to illegality going to the root of the matter, and not to a mere erroneous application of law or a reappreciation of evidence — which is what an appellate court does and is therefore impermissible under Section 34. The judgment also clarified that a possible view taken by the arbitrator on the evidence cannot be disturbed; only a perverse finding, one based on no evidence or which ignores vital evidence, is vulnerable. Associate Builders drew the line that the 2015 Amendment then hardened into statute.
Ssangyong: applying the amended Section 34
The first authoritative reading of the amended Section 34 came in Ssangyong Engineering & Construction Co. Ltd. v. National Highways Authority of India, (2019) 15 SCC 131. The Supreme Court held that the broad construction of "fundamental policy of Indian law" in Western Geco no longer survives under the amended provision; "justice or morality" now means only the most basic notions of justice or morality, engaged where the award shocks the conscience of the court. On the facts, the Court found that the tribunal's reliance on a unilateral circular, applied without giving the affected party a chance to respond, breached natural justice and the most basic notions of justice — and, exercising restraint, the Court chose not to remand but to uphold the dissenting opinion to give the parties finality. Ssangyong also confirmed that the 2015 amendments to Section 34 apply prospectively to petitions filed on or after 23 October 2015.
Delhi Airport Metro: perversity reaffirmed and restrained
The post-amendment restraint was underscored in Delhi Airport Metro Express (P) Ltd. v. Delhi Metro Rail Corporation Ltd., (2022) 1 SCC 131. The Supreme Court reiterated that the patent-illegality ground is available where the arbitrator's view is perverse or so irrational that no reasonable person could have arrived at it, or where the award is based on no evidence or ignores vital evidence. But the Court strongly cautioned that the phrase "patent illegality" is not a licence for courts to act as a court of appeal; interference is permissible only when the illegality goes to the root of the matter. The decision is a leading reminder that perversity is a high threshold, not a routine gateway to merits review.
Non-arbitrability as an independent ground
Section 34(2)(b)(i) lets a court set aside an award whose subject-matter was not capable of settlement by arbitration under Indian law. The same non-arbitrability that bars a reference can later void an award. The Supreme Court in Vidya Drolia v. Durga Trading Corporation, (2021) 2 SCC 1, laid down a four-fold test for non-arbitrability — broadly, disputes involving rights in rem, those affecting third-party rights or requiring centralised adjudication, sovereign and public-interest functions, and matters expressly or impliedly non-arbitrable by statute. Classic non-arbitrable categories include criminal offences, matrimonial and guardianship matters, insolvency and winding-up, testamentary matters, and tenancy governed by special statutes. The court's power to act suo motu on this ground reflects that arbitrability touches public interest, not merely the parties' bargain.
The rigid limitation period under Section 34(3)
Section 34(3) imposes a strict timeline: an application must be made within three months from the date on which the applicant received the arbitral award (or from the disposal of any Section 33 request for correction or interpretation). The proviso allows a court to entertain the application within a further period of thirty days, but only on sufficient cause — and then adds the decisive words "but not thereafter".
In Union of India v. Popular Construction Co., (2001) 8 SCC 470, the Supreme Court held that those words expressly exclude Section 5 of the Limitation Act, 1963, so a court has no power to condone delay beyond the additional thirty days. The outer limit of three months plus thirty days is absolute. This makes computation of the receipt date — and proper service of the signed copy of the award on the party itself — critical; on what counts as valid receipt, see our note on the receipt of written communications.
No automatic stay on enforcement
Before 2015, the mere filing of a Section 34 application operated as an automatic stay on enforcement under the then Section 36, letting award-debtors freeze enforcement simply by challenging the award. This converted Section 34 into a routine delaying tactic and was a major reason awards took years to realise. The 2015 Amendment severed that link. Under the amended Section 36, filing a Section 34 petition does not by itself render the award unenforceable; the award-debtor must file a separate application for stay, and the court may grant a stay subject to conditions, including a direction to deposit or secure the awarded sum, the conditions for stay of a money decree under the Code of Civil Procedure applying mutatis mutandis. A 2021 amendment inserted a proviso requiring an unconditional stay where the court is satisfied that a prima facie case is made out that the arbitration agreement, the contract, or the making of the award was induced by fraud or corruption. The net effect was to restore the teeth of enforcement, place the onus on the challenger to justify a stay, and discourage reflexive, tactical challenges.
Can a court modify an award? Hakeem to Balasamy
A long-standing question was whether Section 34, which speaks only of "setting aside", also permits a court to modify an award. In Project Director, NHAI v. M. Hakeem, (2021) 9 SCC 1 (2021 SCC OnLine SC 473), the Supreme Court answered firmly in the negative: Section 34 confers power only to set aside (wholly or in part) or to remit; reading a power of modification into it would, in Justice Nariman's words, be "crossing the Lakshman Rekha". Modelled on the UNCITRAL Model Law, the provision gave courts no editorial pen over the award.
That position was substantially recalibrated by the Constitution Bench in Gayatri Balasamy v. ISG Novasoft Technologies Ltd., 2025 INSC 605 (decided 30 April 2025). By a 4:1 majority, the Court held that courts may, in limited circumstances, modify an award: (i) where the invalid portion is severable from the valid; (ii) to correct a manifest clerical, computational or typographical error apparent on the face of the record; (iii) to modify post-award interest in appropriate cases; and (iv) by the Supreme Court alone, under Article 142, to do complete justice. The majority was emphatic that this is not a power to review the merits or rewrite the award. The dissent warned that any modification power departs from the Model Law scheme. Balasamy is now the governing authority on the boundary between annulment and modification.
Examiner's checklist
For judiciary and CLAT-PG answers, hold these threads together. First, Section 34 is recourse, not appeal — no reappreciation of evidence (MMTC v. Vedanta; Associate Builders). Second, the grounds are exhaustive and split between proof-based grounds (Section 34(2)(a)) and court-initiated grounds of arbitrability and public policy (Section 34(2)(b)). Third, trace the public-policy arc: narrow in Renusagar, broadened by Saw Pipes and Western Geco, walled off for foreign awards in Shri Lal Mahal, and re-narrowed by the 2015 Amendment and Ssangyong. Fourth, patent illegality is a domestic-only ground under Section 34(2A), excluding mere legal error and reappreciation. Fifth, limitation under Section 34(3) is rigid — three months plus thirty days, no more (Popular Construction). Sixth, on remedy: no power to modify under Hakeem, now relaxed to four narrow situations by Gayatri Balasamy. A party's procedural conduct can also forfeit grounds — see the waiver of the right to object under Section 4.
Frequently asked questions
What are the grounds for setting aside an arbitral award under Section 34?
Section 34(2) provides an exhaustive list. Proof-based grounds under clause (a) include incapacity of a party, invalidity of the arbitration agreement, lack of proper notice or inability to present one's case, the award exceeding the scope of submission, and improper composition or procedure. Under clause (b), the court may act on its own where the subject-matter is non-arbitrable or the award conflicts with the public policy of India. Section 34(2A) adds patent illegality for purely domestic awards.
Is a Section 34 petition an appeal against the award?
No. As the Supreme Court held in MMTC Ltd. v. Vedanta Ltd. (2019) 4 SCC 163, a court under Section 34 does not sit in appeal. It cannot reappreciate evidence or interfere merely because another view was possible. Interference is confined to perverse, arbitrary or capricious awards, or those offending public policy or suffering patent illegality going to the root of the matter.
How did the meaning of 'public policy' change over time?
It began narrow in Renusagar v. General Electric (AIR 1994 SC 860) — fundamental policy of Indian law, interests of India, and justice or morality. ONGC v. Saw Pipes (2003) 5 SCC 705 widened it for domestic awards by adding patent illegality, and Western Geco (2014) 9 SCC 263 expanded it further. The 2015 Amendment and Ssangyong (2019) 15 SCC 131 then re-narrowed it and barred any review on the merits.
What is 'patent illegality' and when does it apply?
Patent illegality, introduced in Saw Pipes and now codified in Section 34(2A), allows setting aside a purely domestic award vitiated by an illegality appearing on the face of the award and going to the root of the matter. It does not apply to international commercial arbitrations, and under the 2015 Amendment an award cannot be set aside merely for an erroneous application of law or by reappreciation of evidence (Associate Builders (2015) 3 SCC 49).
What is the limitation period for filing under Section 34?
Three months from receipt of the award (or from disposal of a Section 33 request), extendable by a further thirty days on sufficient cause — "but not thereafter". In Union of India v. Popular Construction Co. (2001) 8 SCC 470, the Supreme Court held that Section 5 of the Limitation Act is excluded, so courts cannot condone any delay beyond the additional thirty days.
Can a court modify an arbitral award, or only set it aside?
In Project Director, NHAI v. M. Hakeem (2021) 9 SCC 1, the Court held Section 34 allows only setting aside or remand, not modification. The Constitution Bench in Gayatri Balasamy v. ISG Novasoft (2025 INSC 605) recalibrated this, permitting modification in four limited situations: severable invalid parts, manifest clerical or computational errors, post-award interest adjustments, and Article 142 by the Supreme Court — but never a merits review.