How to Set Aside (challenge) an Arbitral Award in Nigeria (2026): Procedure, Grounds & Time Limits

Set aside arbitral award Nigeria is the query that brings a great many in-house counsel and litigators to their computers at the moment an unfavourable award lands on the desk. This guide sets out, in practitioner terms, how to challenge (set aside) an arbitral award before the Nigerian courts in 2026, following the enactment of the Arbitration and Mediation Act 2023, which repealed and replaced the former Arbitration and Conciliation Act. It explains the recognised grounds, the statutory and practical time limits, the court application process step by step, the documents you must file, and what the exercise is likely to cost.

Because the 2023 Act altered several procedural mechanics, particularly around the award review tribunal and enforcement, the practical detail below is calibrated to the current regime rather than the framework it replaced.

Overview, what “setting aside” means in Nigeria

To set aside an arbitral award in Nigeria is to ask a court to declare that award null and void, in whole or in part, on one of a narrow set of recognised grounds. It is not an appeal. A court hearing a set-aside application does not re-open the merits, re-weigh the evidence, or substitute its own commercial judgment for that of the tribunal. Its function is supervisory: to police the integrity of the arbitral process, the jurisdiction of the tribunal, and compliance with fundamental due process and public policy. This narrow scope is a deliberate feature of the framework, which draws heavily on the UNCITRAL Model Law and the interpretative norms that accompany it.

It is important to distinguish three separate legal actions that parties routinely confuse. Setting aside attacks the validity of the award itself. Enforcement (or recognition) converts the award into a domestic judgment capable of execution. Appeal is a challenge to a court’s decision, for example, the ruling on the set-aside application, and is governed by the ordinary rules of appellate procedure. The 2023 Act also introduced, as an opt-in mechanism, the possibility of an award review tribunal to review an award before any court application, where the parties have so agreed. A party may be defending enforcement in one forum while simultaneously prosecuting a set-aside application in another, and the interaction between these tracks is where most tactical errors occur.

When is a set-aside appropriate?

A set-aside application is appropriate where there is a genuine defect going to the root of the award: the tribunal lacked jurisdiction or exceeded it; the arbitration agreement was invalid; a party was denied a proper opportunity to present its case; the composition of the tribunal or the procedure was not in accordance with the parties’ agreement; or the award conflicts with the public policy of Nigeria. Fraud or corruption affecting the award is a further recognised ground. Where a party is merely dissatisfied with the outcome, a set-aside application is not the remedy, and pursuing one regardless is a common and expensive mistake.

For readers new to the field, dispute resolution in Nigeria broadly comprises four routes: negotiation, mediation, arbitration and litigation. Setting aside sits at the intersection of the last two, a court proceeding that reviews the product of an arbitral proceeding. For a broader orientation you can consult the Dispute Resolution practice area, Nigeria hub.

Eligibility, who can apply and locus standi

Standing to bring a set-aside application is not open to the world at large. The applicant must ordinarily be a party to the arbitration agreement and to the arbitral proceedings that produced the award. The classic applicant is the losing respondent or a claimant dissatisfied with a partial award, but a party that succeeded in part may also challenge the portions adverse to it.

Parties and non-parties

The default rule is that only a party to the arbitration may apply to set aside the award. Non-parties generally lack locus standi because arbitration is a creature of consent, and a person who never agreed to arbitrate has no standing to attack the consequences of that agreement. There are, however, narrow situations where a person directly and legally affected by an award, for example, an assignee of contractual rights, a successor entity, or a guarantor whose liability is fixed by the award, may be able to demonstrate sufficient interest to intervene. These interventions are fact-specific and require careful pleading of the affected legal interest; a merely commercial or reputational concern will not suffice.

A party may also be barred from applying. The most common bar is being out of time. Others include waiver, where a party proceeded with the arbitration knowing of a defect and without objection, and the principle that grounds not raised before the tribunal may be treated as abandoned. A party who has already accepted the benefits of an award will find it difficult to turn around and attack it.

When the state or public bodies can be respondents

The State, its agencies and statutory corporations frequently appear as parties to commercial arbitration in Nigeria, and they can be both applicants and respondents in set-aside proceedings. Where a public body is a respondent, counsel must anticipate arguments touching sovereign or statutory immunity and the special procedural protections that sometimes attach to government litigants, including notice requirements. Public policy grounds also acquire particular sensitivity where public funds or regulatory functions are engaged. If you are weighing whether to challenge or to enforce, our note on how to resolve a dispute in Nigeria and the Dispute Resolution Lawyers, Nigeria directory can help you shortlist counsel with the relevant experience.

Step-by-step procedure to set aside an arbitral award in Nigeria

This is the operational core of the guide. The sequence below assumes a domestic award seated in Nigeria; where the award is foreign, or where enforcement is already afoot, note the variations flagged at each stage. The timeline table sets out who is responsible for each step and how long it realistically takes.

Step 1, Preliminary case review and intake

Begin with a disciplined intake checklist. Confirm the type of award (domestic or foreign), the exact date the award was made and the date it was received by your client, whether it is final or partial, and whether it has already been submitted for enforcement or recognition anywhere. Retrieve and read the arbitration agreement itself, the clause, its scope, the seat, the governing procedural rules and the signatures. The single most important early determination is the deadline: the clock for a set-aside application typically runs from receipt of the award, and misjudging this can be fatal. Map the potential grounds against the record before committing to the challenge.

Step 2, Choose the forum and prepare the originating process

Forum selection is a substantive decision, not a formality. Under the 2023 Act the relevant court is generally the High Court, which exercises the supervisory jurisdiction over the award seated within its territory. Where the practical objective is to stop execution against particular assets, the High Court of the jurisdiction where those assets sit may also be relevant, and enforcement-related challenges are frequently mounted there. A federal or constitutional element in the underlying dispute may point toward the Federal High Court. Choose deliberately, because the wrong forum invites a preliminary objection that can waste months.

Step 3, Form of application and reliefs sought

The application is typically commenced by originating motion or by motion on notice, depending on the applicable High Court rules and whether contested facts require oral evidence. The reliefs sought should be drafted with precision. Typical formulations include: a declaration that the award is void and of no effect (in whole or as to identified parts); an order setting aside the award; an order staying enforcement or execution of the award pending determination of the application; and an order for the costs of the application. Where partial invalidity is in play, plead in the alternative so that the court can sever and strike the offending portions while preserving the remainder.

Step 4, Service on parties, tribunal and arbitrators

Service is a frequent source of failure. Serve every respondent party. Where the applicable rules or the nature of the relief require it, serve the tribunal or individual arbitrators, for example, where allegations of misconduct or bias are made against them. Where a respondent or arbitrator is outside Nigeria, you will generally need the leave of the court to serve out of the jurisdiction, and you must comply with the relevant service-out procedure and any applicable treaty channel. Prepare the affidavit of service carefully; defective proof of service will stall the substantive hearing.

Step 5, Interim measures and stay of enforcement

Filing a set-aside application does not, of itself, guarantee that enforcement will halt. If your client faces imminent execution, you must apply separately for a stay of enforcement or execution, and, where dissipation of assets is a real risk, for a freezing (Mareva-type) injunction to preserve the position pending the outcome. These applications require evidence of urgency and, for asset preservation, credible evidence of a risk of dissipation. Move early: the value of a stay evaporates once execution has taken place. Under the 2023 Act, the court may also order the party seeking a stay to provide appropriate security, so frame the application by reference to the current statutory position.

Step 6, Evidence strategy

Set-aside applications are decided principally on affidavit evidence and the arbitral record. Build the affidavit around a clear chronology, exhibit the certified copy of the award and the arbitration agreement, and exhibit the relevant portions of the tribunal record, terms of reference, procedural orders, and correspondence, that establish the defect relied upon. Where a denial of due process or a procedural irregularity is alleged, the hearing transcript is often decisive. Number your exhibits and cross-reference them precisely in the affidavit; a court will not hunt through an unindexed bundle for your best point.

Step 7, Hearing and standard of review

At the hearing the court applies a narrow standard of review. It will not sit as a court of appeal on the merits. On jurisdictional challenges the court examines whether the tribunal had competence and stayed within it. On procedural grounds it looks for a serious irregularity that caused real unfairness, not a technical or immaterial slip. The public policy exception is construed restrictively: it captures awards that offend the fundamental legal and moral order of Nigeria, for example, those tainted by fraud, corruption or a breach of natural justice, and not awards that are merely thought to be commercially wrong. Counsel should frame each ground precisely and evidence it specifically.

Step 8, Ruling and post-ruling remedies

If the application succeeds, the award is set aside in whole or in part and, where appropriate, the court may remit issues or leave the parties to re-arbitrate. If it fails, the award stands and the successful party may proceed to enforce. Either way, consider the appeal position promptly: the losing side may appeal the High Court’s decision, subject to the ordinary appellate rules and time limits, and a stay pending appeal may be sought. Where a foreign award has been set aside at its seat abroad, distinct considerations arise for its recognition in Nigeria. Our companion guide on how to enforce an arbitral award in Nigeria addresses the enforcement track in detail.

Required documents to set aside an arbitral award in Nigeria

Assemble the documentary record before you file. Missing or improperly authenticated documents are among the most common reasons applications are adjourned or dismissed. Foreign documents generally require authentication or equivalent legalisation, and non-English documents require certified translation.

A practical note on the tribunal record: obtaining a certified copy from an arbitral institution can take longer than expected, so request it at the intake stage. Where you rely on the transcript to prove a due-process point, exhibit the specific passages rather than the entire transcript, and pinpoint them in the affidavit.

Timeline and deadlines, statutory and practical limits

The governing time limit is the first thing to fix and the last thing to compromise. Under the Arbitration and Mediation Act 2023, an application to set aside an award must generally be made within three months from the date on which the applicant received the award (or, where a request for correction, interpretation or an additional award was made to the tribunal, from the date that request was disposed of). Always confirm the precise position under the applicable section of the current Act before assuming your window is open, as the interaction with any agreed award review tribunal and with foreign awards can differ.

• When time starts. Time generally runs from receipt of the award, not from the date it was made. Diarise the receipt date the moment the award arrives.
• Effect of correction requests. A pending request to the tribunal to correct, interpret or supplement the award can affect when the clock begins; confirm the position before assuming the window is open.
• Enforcement in parallel. If the counterparty has commenced enforcement, do not assume your set-aside window is enlarged; the two tracks run on their own timetables.
• No informal extensions. Do not rely on the goodwill of the other side or on being “nearly ready.” Missing the statutory period is generally irremediable.

Once filed, the practical timetable is driven by service, the respondent’s answer, and court listing. Allow days to a fortnight for service, a week to three weeks for the counter-affidavit, and, realistically, anywhere from one to six months to reach and complete the hearing, depending on the court’s list. A ruling typically follows some weeks after the hearing is reserved.

Costs and fees to set aside an arbitral award in Nigeria

Costs vary considerably by state, by the value and complexity of the matter, and by the seniority of counsel instructed. The ranges below are broad, indicative planning figures only and should be confirmed against current registry schedules and counsel quotations rather than relied upon as fixed amounts.

Budget for the whole arc, not just the filing. The largest cost drivers are counsel time at a contested hearing, any urgent interim application, and, if the loser appeals, the appellate stage. Where the amount at stake is modest relative to these figures, the economics of a challenge deserve hard scrutiny before you commit.

What the Arbitration and Mediation Act 2023 changed

The Arbitration and Mediation Act 2023 modernised Nigeria’s arbitration framework, repealing the previous Arbitration and Conciliation Act, and in doing so touched several mechanics directly relevant to setting aside. Practitioners should read the enacted text for the precise section numbers, but the practically significant themes include: closer alignment of the grounds for challenge with the UNCITRAL Model Law; the introduction of an opt-in award review tribunal mechanism (allowing parties to agree to a review of the award before any court application); provisions on interim measures and emergency arbitrators; recognition of third-party funding of arbitration; and a single consolidated framework for both domestic and international arbitration.

Because these changes affect both what you argue and how you argue it, applications should be drafted by reference to the current statute rather than the repealed provisions.

Practical tips on litigating under the current regime

Frame each ground expressly against the statutory language of the 2023 Act, citing the relevant section. Where you seek a stay of enforcement, address the statutory provisions on stays and security head-on rather than relying on general equitable principles alone. Anticipate that the court will hold you to the narrow, Model-Law-aligned review standard and resist any temptation to argue the merits. Consider at the outset whether the parties agreed to an award review tribunal, as this may affect the sequencing of any court application. For a fuller treatment of the reform package and its commercial implications, see our analysis of Nigeria’s arbitration and mediation reform.

Transitional provisions, handling pre-2023 awards

Awards made, and arbitrations commenced, before the 2023 Act took effect can raise transitional questions: which grounds, which time limits and which procedural rules apply. The answer turns on the transitional provisions of the Act and applicable case law. As a working discipline, identify at intake the date the arbitration commenced and the date the award was made, then map those dates against the applicable regime before drafting. Getting this wrong can mean arguing the case under the wrong law.

Common pitfalls and how to avoid them

• Missing the statutory time limit. The clock usually starts on receipt of the award. Diarise the date immediately and file with margin to spare.
• Failing to serve the tribunal or arbitrator. Where the rules or the nature of the allegations require it, non-service is fatal. Confirm the service requirements before filing.
• Relying on generic procedural irregularity. Vague complaints fail. Plead the specific defect and evidence the specific unfairness it caused.
• Weak affidavit and incomplete record. A muddled chronology and missing tribunal record pages undermine even a good ground. Build the exhibit bundle first, then draft.
• Ignoring security requirements. Where the court may order security as a condition of a stay, plan for it; being caught unprepared can stall the application.
• Overlooking cross-border assets. If the counterparty’s assets sit abroad, a domestic stay may not protect your client. Consider the enforcement geography early.
• Delaying urgent interim relief. A stay is worthless after execution. Move for it at the same time as, or before, the substantive filing.
• Neglecting costs relief. Plead the costs relief you want and consider the risk of an adverse costs order if the challenge fails.
• Choosing the wrong forum. The wrong court invites a preliminary objection. Fix the seat and the enforcement geography before you issue.
• Arguing the merits. The court is not an appellate tribunal. Stay within the recognised grounds or expect to lose.

Comparison, set aside vs enforcement vs appeal

Conclusion

To set aside an arbitral award Nigeria demands speed, discipline and precision: fix the deadline at intake, choose the right forum, plead specific grounds against the statutory language of the Arbitration and Mediation Act 2023, and move for interim relief before enforcement overtakes you. The 2023 Act aligned the review standard more closely with the UNCITRAL Model Law and introduced new mechanisms such as the award review tribunal, so applications must be built on the current statute rather than the repealed provisions. If you are facing an adverse award or an imminent enforcement action, take advice immediately, the value of a set-aside strategy often turns on decisions made in the first fortnight.

Explore the Dispute Resolution Lawyers, Nigeria directory to instruct experienced counsel without delay.

Sources

1. National Assembly of the Federal Republic of Nigeria (Bills & Legislation)
2. Supreme Court of Nigeria
3. Federal Ministry of Justice, Nigeria
4. Nigerian Bar Association
5. UNCITRAL (Model Law & Digest)
6. Policy and Legal Advocacy Centre (PLAC), Laws of Nigeria
7. Lagos Court of Arbitration