Grounds for Setting Aside an Arbitral Award (Section 34): Complete Guide

What Section 34 is ?

Section 34 is the provision that lets a party ask a court to set aside a domestic arbitral award. Its opening words are deliberately restrictive: recourse to a court against an arbitral award “may be made only by an application for setting aside such award in accordance with sub-section (2) and sub-section (3)”. The word “only” is the whole architecture in miniature. There is no other route, no general appeal, and no inherent power in the court to improve on the award.

That design follows directly from Section 5 of the Act, which tells courts not to intervene in matters governed by Part I except where the Act itself allows it. Arbitration is a private dispute-resolution system that the parties opted into by contract. A court supervising it acts more like a referee checking that the game was played by the rules than a second umpire re-scoring the match. This is why a Section 34 court will not disturb an award merely because it would have decided the dispute differently, or because the arbitrator’s reading of the evidence was, in the court’s opinion, generous or wrong.

The grounds themselves come in two families, and the difference between them matters. Under Section 34(2)(a), the burden is on the party challenging the award: it must establish one of five specified procedural or jurisdictional defects, and since the 2019 amendment it must do so “on the basis of the record of the arbitral tribunal” rather than by leading fresh evidence. Under Section 34(2)(b), the court may act on its own finding, whether or not a party proves it, on just two matters – that the dispute was not capable of settlement by arbitration, or that the award conflicts with the public policy of India. Section 34(2A), added in 2015, supplies a third, narrower opening that applies only to purely domestic awards: patent illegality on the face of the award.

It also helps to be clear about what an award is. An arbitral award is the tribunal’s binding decision on the substance of the dispute, made under Section 31, and it includes an interim award. Section 34 bites on final and interim awards alike, but not on every procedural order an arbitrator passes along the way. And the section applies to awards made in arbitrations seated in India. A genuinely foreign award – one that falls under the New York Convention – is not challenged under Section 34 at all; it is resisted at the enforcement stage under Section 48, which carries a closely related but separate list of grounds.

One more distinction saves a great deal of confusion. The current Section 34 is not the Section 34 of 2003 or even of 2016. The provision has been reshaped by three amendments – the 2015 Amendment Act, which rewrote the public-policy test and inserted the patent-illegality ground; the 2019 Amendment Act, which changed how a challenging party must prove its case; and the 2021 Amendment Act, which dealt with the automatic stay on enforcement where fraud is alleged. Reading an older commentary without tracking those changes is the most common way to get the law wrong.

Section 34(2)(a): the five grounds a party must prove

The five grounds in Section 34(2)(a) are the ones a challenging party carries the burden of establishing. They are all about the integrity of the process and the limits of the tribunal’s mandate, not about whether the tribunal decided the merits well. Each is narrow, and each has been litigated heavily.

Incapacity of a party. The first ground is that a party to the arbitration agreement was under some incapacity – for instance a minor or a person of unsound mind who was not properly represented. It is rarely used in commercial arbitration, because the parties are usually companies, but it remains available where consent to arbitrate was compromised by legal incapacity.

The arbitration agreement is not valid. The second ground is that the arbitration agreement was not valid under the law to which the parties subjected it, or, failing any indication, under Indian law. This is where challenges based on a defective or non-existent agreement, a party who never signed, or an agreement that was void for some reason are argued. It connects to the wider question of when an arbitration clause binds a party at all.

No proper notice, or inability to present the case. The third ground is that the party making the application was not given proper notice of the appointment of the arbitrator or of the arbitral proceedings, or was otherwise unable to present its case. This is the natural-justice ground. A tribunal that decides on a document a party never got to see, refuses a reasonable adjournment that causes real prejudice, or shuts a party out of a hearing exposes its award to challenge here. The complaint has to be about a genuine denial of a fair opportunity, not merely that the party wishes it had been given more time.

The award goes beyond the scope of the reference. The fourth ground is that 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. An arbitrator’s authority comes entirely from the arbitration agreement and the reference; decide something the parties never sent to arbitration and that part of the award is vulnerable. Crucially, this ground carries a proviso: if the decisions on matters submitted to arbitration can be separated from those not submitted, only the offending part is set aside and the rest of the award survives. That statutory power of severance, as we will see, became the anchor for the 2025 ruling on modification.

The composition or procedure was wrong. The fifth ground is that the composition of the arbitral tribunal or the arbitral procedure was not in accordance with the agreement of the parties (or, absent agreement, with Part I of the Act). A tribunal constituted in breach of the agreed method of appointment, or one that ignored an agreed procedure, falls here. This is the ground behind the long line of cases on unilateral appointments, where one party’s power to nominate the sole arbitrator or control the panel has been held to taint the process.

A single theme runs through all five. None of them asks whether the arbitrator was right. They ask whether the arbitrator had the authority to decide, and whether the process that produced the decision was fair and agreed. That is why fresh evidence is generally not allowed: after 2019, the challenging party must make its case out of the record that was already before the tribunal.

Section 34(2)(b): non-arbitrability and public policy

The second family of grounds does not depend on the challenging party proving anything in the same way. Under Section 34(2)(b), the court may set aside an award if it finds – on its own assessment – either that the subject-matter of the dispute is not capable of settlement by arbitration under the law for the time being in force, or that the award is in conflict with the public policy of India.

The first limb, non-arbitrability, asks whether the dispute was one that could be sent to a private tribunal at all. Some categories of dispute are reserved by law or by their nature for courts and public tribunals – matters that affect the rights of the world at large rather than just the two parties, or that a statute has carved out for a special forum. The Supreme Court’s four-fold test for arbitrability sets out when a subject-matter is off-limits: broadly, disputes over rights that operate against everyone rather than only between the parties, disputes that affect third parties or need a centralised public remedy, matters touching inalienable sovereign functions, and categories a statute has expressly or by necessary implication kept away from arbitration. If an award decides something that was never arbitrable in the first place, the court can strike it down under this limb.

The second limb, public policy, is the ground that generates the most litigation and the most confusion, because “public policy” sounds open-ended and once was. Its scope has been cut back deliberately over the last decade, and the modern boundaries are set both by the 2015 amendment and by a run of Supreme Court decisions. The next section traces that story, because you cannot argue or resist a public-policy challenge in 2026 without knowing how narrow the ground has become.

Public policy of India: how the ground narrowed

“Public policy” has been the battlefield of Indian arbitration law. The reason is simple: if the phrase is read widely, almost any award a judge dislikes can be recast as offending public policy, and the promise of finality collapses. If it is read narrowly, awards stand even when a judge thinks they are wrong. The history of Section 34 is largely the history of the courts and Parliament trying to hold that line.

The starting point was the foreign-award decision in Renusagar Power Co. v. General Electric (1994), which read public policy narrowly – an award offended it only if it went against the fundamental policy of Indian law, the interests of India, or justice or morality. Then came ONGC v. Saw Pipes (2003), which widened the ground for domestic awards by adding “patent illegality”, so that an award contrary to the substantive law, the terms of the contract, or the Act itself could be attacked as against public policy. Saw Pipes opened the door to merits-style challenges, and for a decade Section 34 petitions routinely re-argued the contract under the banner of public policy. ONGC v. Western Geco (2014) then layered on further facets, importing a Wednesbury-style review of the reasonableness of the tribunal’s reasoning, and Associate Builders v. DDA (2015) gathered the strands together, explaining public policy through fundamental policy, the interest of India, justice and morality, and patent illegality.

Parliament stepped in with the 2015 Amendment Act to stop the drift. It rewrote Section 34 with two Explanations. Explanation 1 says an award conflicts with the public policy of India only if it was induced or affected by fraud or corruption, if it contravenes the fundamental policy of Indian law, or if it conflicts with the most basic notions of morality or justice. Explanation 2 is the crucial limiter: deciding whether an award contravenes the fundamental policy of Indian law “shall not entail a review on the merits of the dispute”. At the same time, patent illegality was removed from the public-policy ground for international commercial arbitrations and given its own, domestic-only home in Section 34(2A).

The Supreme Court applied the post-amendment scheme in Ssangyong Engineering v. NHAI (2019). It confirmed that the wide Saw Pipes and Western Geco approach no longer governs, that a court cannot interfere merely because it would read the contract differently, and that an arbitrator who rewrites the contract or decides on a basis nobody was given a chance to address crosses into “the most basic notions of justice”. Ssangyong is now the standard reference point for what “public policy” means after 2015: fraud or corruption, a breach of the fundamental policy of Indian law that does not require re-opening the merits, and a violation of basic justice or morality – and no more.

The outer edge of the ground was tested again in the Delhi Metro curative decision of 2024, where the Supreme Court, exercising its rare curative jurisdiction, annulled an award of roughly Rs 8,000 crore as perverse and patently illegal, holding that the tribunal had ignored the plain terms of the contract. The case is a reminder that the narrowing of public policy has not made awards untouchable; an award that is genuinely perverse or that flouts the contract still falls. But it took the most exceptional remedy the legal system has to get there, which tells you how high the bar now sits.

Patent illegality under Section 34(2A)

After the 2015 amendment, patent illegality lives in its own sub-section, Section 34(2A), and it is important to understand exactly how limited it is. The sub-section says that a purely domestic arbitral award – an arbitration that is not an international commercial arbitration – may be set aside by the court if the court finds that the award is vitiated by patent illegality appearing on the face of the award. It does not apply to international commercial arbitrations seated in India, which can only be attacked on the Section 34(2) grounds including public policy.

The sub-section comes with a built-in guardrail. Its proviso states that an award shall not be set aside merely on the ground of an erroneous application of the law or by re-appreciation of evidence. That single sentence kills most of what parties actually want to argue. A wrong interpretation of a clause, a debatable reading of the facts, a conclusion the court finds unpersuasive – none of these is patent illegality. What qualifies is illegality that goes to the root of the matter and is obvious on the face of the award: a decision that contravenes the substantive law of India, that ignores or rewrites the contract the parties made, or that is so irrational that no reasonable person could have reached it. An award with no reasons at all, or with reasons that are internally contradictory, can also fall foul of the requirement in Section 31(3) that an award state its reasons.

The line between a merely wrong award and a patently illegal one is where most Section 34 hearings on domestic awards are actually fought. The tribunal’s view of the evidence is close to unassailable; its decision to disregard the express terms of the contract is not. An arbitrator is bound to decide in accordance with the terms of the contract, and an award that travels outside them – awarding what the contract prohibits, or ignoring a clause that governs the very question in dispute – is the paradigm case of patent illegality. Perversity, in the sense of a finding based on no evidence or one that overlooks vital evidence, is the other recurring example.

Can a court modify an award, not just set it aside?

For most of the life of the 1996 Act, the answer to this question was a flat no, and it was one of the few genuinely settled points in Indian arbitration law. Section 34 speaks only of setting an award aside. It says nothing about varying, correcting or improving it. On that basis the Supreme Court held in McDermott International v. Burn Standard (2006) that the court’s power under Section 34 is supervisory, not appellate, and that it can quash an award but cannot modify it – leaving the parties to arbitrate again if they wish. The principle was applied for years. In Project Director, NHAI v. M. Hakeem (2021), the Court squarely refused to read a power of modification into Section 34, holding that allowing courts to modify awards would be to rewrite the statute, and that a challenging party’s remedy is to have the award, or a severable part of it, set aside – nothing more. Larsen Air Conditioning v. Union of India (2023) and S.V. Samudram v. State of Karnataka (2024) followed Hakeem and reinforced it.

This produced a hard practical problem. Imagine an award that is right in almost every respect but contains an obvious arithmetical slip, or grants interest at a rate the law does not permit, or decides one small extra issue that was never referred. Under the no-modification rule, a court that spotted the flaw had a blunt choice: leave the flawed award standing, or set the whole thing aside and force the parties back into a fresh arbitration over a defect that could have been fixed with a stroke of a pen. Neither outcome served anyone. Litigants spent years and lakhs of rupees re-running arbitrations to cure errors everyone agreed were errors.

That is the problem the Constitution Bench addressed in Gayatri Balasamy v. ISG Novasoft Technologies (2025). By a majority of four to one, a five-judge bench held that courts do have a limited power to modify an arbitral award under Sections 34 and 37 – but only in tightly defined situations. First, a court may sever the invalid or unsustainable portion of an award from the valid part, a power the Court located in the very proviso to Section 34(2)(a) that allows partial setting aside. Second, a court may correct a clerical, computational or typographical error that appears on the face of the award and is not open to debate. Third, a court may modify post-award interest in appropriate cases where the circumstances justify it. And fourth, the Supreme Court retains its power under Article 142 of the Constitution to do complete justice, to be used with great restraint. Justice Viswanathan dissented, warning that even a limited modification power cuts against the finality that makes arbitration attractive and against India’s obligations on enforcement of awards abroad.

The significance of Balasamy is easy to overstate and easy to understate, so it is worth being precise. It does not turn Section 34 into an appeal, and it does not let a court substitute its own decision on the merits for the tribunal’s. What it does is give courts a scalpel where they previously had only a hammer. A minor, indisputable defect can now be corrected without destroying the whole award, and a bad part can be severed while the good part stands. For anyone advising on a Section 34 challenge in 2026, this changes the strategy: the question is no longer only “can this award be set aside?” but “which precise part is vulnerable, and can what remains be saved or corrected?”

The limitation clock under Section 34(3)

A challenge to an award is worthless if it is filed late, and Section 34(3) sets one of the strictest limitation regimes in Indian procedural law. An application to set aside must be made within three months from the date on which the party received the arbitral award (or, if a request for correction or interpretation under Section 33 was made, from the date that request was disposed of). The court may entertain an application filed after the three months if it is satisfied that the applicant was prevented by sufficient cause from filing in time – but it may extend the period by “a further period of thirty days, and not thereafter”.

Those last three words carry enormous weight. “And not thereafter” means the outer limit is three months plus thirty days, full stop. A court has no power to condone even a single day beyond that combined period, however good the explanation. Section 5 of the Limitation Act, which lets courts condone delay generally, does not come to the rescue, because Section 34(3) expressly displaces it. The Supreme Court has repeatedly enforced this hard stop, and countless meritorious challenges have died simply because they were filed on day 121.

Two points of detail trip people up. First, the clock runs from receipt of a signed copy of the award by the party itself, not from the date the award was made or the date a party’s lawyer happened to hear about it; delivery has to be effective. Second, “three months” means three calendar months, not ninety days – a distinction the Supreme Court drew in the Himachal Techno Engineers case, and one that occasionally gains or costs a party a day or two depending on the length of the months involved. Where a party spent time bona fide pursuing its challenge in a wrong but not absurd forum, Section 14 of the Limitation Act can exclude that period, but that is an exclusion of time, not an extension of the deadline, and it does not soften the “not thereafter” bar. A challenge grounded even in alleged fraud cannot use Section 17 of the Limitation Act to reach back beyond the outer limit.

The practical lesson is unglamorous but decisive: treat the Section 34 deadline as immovable, diarise it from the date of receipt, and file within three months wherever humanly possible, keeping the thirty-day extension as an emergency reserve rather than a plan.

Section 34(4): sending the award back to be cured

Section 34(4) is a quietly useful provision that is often overlooked. It lets a court, when it is asked to set an award aside, adjourn the proceedings for a period it decides, so as to give the arbitral tribunal an opportunity to resume the arbitration or to take such action as, in the tribunal’s opinion, will eliminate the grounds for setting aside. In plain terms, instead of striking down an award for a fixable defect, the court can hand it back to the same tribunal to put right.

There are firm limits on when this works. The power can be used only on a written request by a party – a court cannot remit the award on its own motion – and the request must be made before the award is set aside, not after. It is meant for curable defects, most obviously an award that has recorded a conclusion but failed to give adequate reasons, where the tribunal can supply the missing reasoning. It is not a device to reopen the merits or to let the tribunal reach a different result.

The boundary was drawn sharply by the Supreme Court in I-Pay Clearing Services v. ICICI Bank (2022). The Court distinguished between a gap in the reasons for a finding, which Section 34(4) can cure, and the absence of a finding altogether, which it cannot. If the tribunal has actually decided an issue but expressed itself poorly, remission can let it explain. But if the tribunal never made a finding at all, there is nothing to explain, and asking it to now decide the issue would be to let it fill a substantive hole in the award under the guise of adding reasons. Used within those limits, Section 34(4) is a sensible way to save an otherwise sound award from a technical flaw.

How and where to file a Section 34 application

The mechanics of a Section 34 challenge matter as much as the grounds, because a procedural misstep can be as fatal as a weak case. The application is made to the “court” as the Act defines it. For a domestic arbitration, that is the principal civil court of original jurisdiction in the district – and, where the subject-matter would otherwise lie before it, the relevant commercial court or commercial division of the High Court under the Commercial Courts Act, 2015, since the great majority of Section 34 matters are commercial disputes. For an international commercial arbitration seated in India, the “court” is the High Court. Filing in the wrong forum wastes time the strict limitation clock does not give back.

The application itself is not a bare petition. It should set out the award, the specific ground or grounds relied on, and the material from the record of the arbitration that supports each ground – remembering that, after 2019, the case for the Section 34(2)(a) grounds must be built from the tribunal’s record rather than from fresh evidence. Since the 2015 amendment, Section 34(5) also requires that the application be filed only after prior notice to the other party, accompanied by an affidavit endorsing compliance with that requirement, though the Supreme Court has treated this notice requirement as directory rather than mandatory, so that a failure to give it does not by itself sink the application. Section 34(6) adds an aspiration rather than a hard rule: the court should try to dispose of the application within one year from the date notice is served.

After Section 34: appeal under Section 37 and the stay on enforcement

A Section 34 order is not necessarily the last word. Section 37 provides a single, limited right of appeal. An order setting aside or refusing to set aside an award under Section 34 is appealable, as is an order granting or refusing a measure under Section 9 or Section 17 and an order of the tribunal on its own jurisdiction under Section 16 in specified circumstances. But Section 37 is as tightly confined as Section 34 itself. The appellate court applies the same restrained standard; it does not re-hear the dispute or expand the grounds, and it will not interfere with a Section 34 court’s refusal to set aside an award unless that refusal was itself perverse or outside the permissible bounds. Section 37(3) makes clear there is no second appeal from an order passed in appeal, though the constitutional route to the Supreme Court by special leave remains, exercised sparingly.

Which grounds actually work – and which do not

After all the doctrine, it helps to be blunt about what succeeds. The grounds that reliably move courts are the ones about process and authority: a real denial of natural justice, an award that decides matters never referred to arbitration, a tribunal constituted or run in breach of the parties’ agreement, or an award that plainly ignores or rewrites the contract. These are the arguments that fit the section as it is actually applied, and they win because they do not ask the court to sit as an appellate body over the merits.

The arguments that fail are the ones dressed up to look like grounds but which are really an invitation to re-decide the dispute. “The arbitrator misread the evidence.” “The arbitrator interpreted the clause wrongly.” “The award is unfair to us on the numbers.” Since the 2015 amendment and Ssangyong, these do not clear the bar, because the proviso to Section 34(2A) rules out interference for an erroneous application of law or re-appreciation of evidence, and Explanation 2 to Section 34(2)(b) bars a review on the merits under the public-policy head. A Section 34 petition that reads like an appeal is the most common reason challenges are dismissed.

The following table summarises the current position ground by ground.

Read against that grid, a strong challenge is one that lands squarely in a single box and stays there, supported by the tribunal’s own record. A weak challenge is one that hops between boxes hoping the court will look at the merits. Knowing the difference is most of the skill in this area.

Frequently asked questions

What is Section 34 of the Arbitration and Conciliation Act, 1996?
Section 34 is the provision that allows a party to apply to a court to set aside a domestic arbitral award. It is the only route to challenge such an award, and it works on a closed list of grounds rather than as a general appeal. A court cannot re-hear the dispute; it can only decide whether one of the specified grounds is made out.

On what grounds can an arbitral award be set aside?
An award can be set aside if the challenging party establishes, from the tribunal’s record, incapacity of a party, an invalid arbitration agreement, lack of proper notice or an inability to present its case, that the award went beyond the scope of the reference, or a defect in the tribunal’s composition or procedure. Separately, a court may set it aside if it finds the subject-matter was not arbitrable, that the award conflicts with the public policy of India, or – for a domestic award – that it is vitiated by patent illegality on its face.

What is the time limit to file a Section 34 application?
Three months from the date the party received the award. A court can extend this by a further thirty days if it is satisfied there was sufficient cause for the delay, but not beyond that combined period. The words “and not thereafter” in Section 34(3) mean no delay past three months and thirty days can be condoned, whatever the reason.

Can a court modify an arbitral award, or only set it aside?
Until 2025 the settled position was that a court could only set an award aside, not modify it. In Gayatri Balasamy v. ISG Novasoft Technologies (2025), a five-judge bench of the Supreme Court held that courts have a limited power to modify – to sever an invalid part, to correct a clerical, computational or typographical error apparent on the face of the award, and to adjust post-award interest in appropriate cases – with the Supreme Court’s Article 142 power available in addition. It is a narrow power, not a general right to re-decide the dispute.

What is “patent illegality” under Section 34(2A)?
Patent illegality is an illegality that goes to the root of the matter and is apparent on the face of the award – for example, an award that contravenes the substantive law of India, ignores or rewrites the terms of the contract, or is so irrational that no reasonable person could have reached it. It applies only to purely domestic awards, not to international commercial arbitrations, and it cannot be invoked merely because the tribunal applied the law wrongly or the court would weigh the evidence differently.

Is filing a Section 34 application enough to stop enforcement of the award?
No. Since 2015, filing a challenge does not automatically stay the award. Once the time for a challenge has passed, the award is enforceable like a decree. A party wanting to postpone enforcement while its challenge is heard must apply separately for a stay under Section 36, and courts usually require a deposit or security as a condition of granting it.

What is the difference between Section 34 and Section 48?
Section 34 is used to set aside a domestic award made in an arbitration seated in India. Section 48 is used to resist enforcement of a foreign award under the New York Convention. The grounds overlap heavily – both include invalid agreement, denial of a fair hearing, excess of scope, and public policy – but a foreign award is not “set aside” in India under Section 34; enforcement of it is refused under Section 48.

Can I appeal a Section 34 order?
Yes, but only within the narrow limits of Section 37. An order setting aside or refusing to set aside an award is appealable to the court authorised to hear appeals from the Section 34 court, applying the same restrained standard. There is no second appeal under Section 37(3), though a special leave petition to the Supreme Court remains possible in a fit case.

Does the court re-examine the evidence in a Section 34 petition?
No. A Section 34 court does not re-appreciate the evidence or substitute its own view of the facts for the tribunal’s. The proviso to Section 34(2A) expressly bars setting aside an award for an erroneous application of law or a re-appreciation of evidence, and Explanation 2 to Section 34(2)(b) bars a review on the merits under the public-policy ground.

What happens after an award is set aside?
Setting aside destroys the award. The parties are ordinarily left to have the dispute arbitrated afresh if the arbitration agreement still allows it, unless the court has instead severed only a part of the award or, in a fit case, corrected a limited defect under the power recognised in Gayatri Balasamy. Setting aside does not convert the court into the decision-maker on the merits.

References

Statutes and amendments

1. Arbitration and Conciliation Act, 1996 – Sections 5, 31, 33, 34, 36, 37, 48 (bare Act, indiacode.nic.in).
2. Arbitration and Conciliation (Amendment) Act, 2015 – rewrote the public-policy ground (Explanations 1 and 2 to Section 34(2)(b)), inserted Section 34(2A) patent illegality, added Sections 34(5) and 34(6), and removed the automatic stay on enforcement.
3. Arbitration and Conciliation (Amendment) Act, 2019 – substituted “furnishes proof” with “establishes on the basis of the record of the arbitral tribunal” in Section 34(2)(a).
4. Arbitration and Conciliation (Amendment) Act, 2021 – unconditional stay under Section 36 where the award is prima facie induced by fraud or corruption.
5. Commercial Courts Act, 2015 – forum for Section 34 applications in commercial disputes.
6. Arbitration and Conciliation (Amendment) Bill, 2024 – draft released for consultation on 18 October 2024 (proposals only; not enacted as of July 2026).

Case law