The entry into force of the 2026 ICC Arbitration Rules[1] on 1 June 2026 marks one of the most consequential revisions to the ICC framework in recent years. While the 2021 Rules represented an incremental modernisation of ICC practice, the 2026 revisions appear more ambitious in design. They reflect a conscious institutional effort to recalibrate arbitration around speed, procedural flexibility and user expectations while preserving the characteristics that have long distinguished ICC arbitration from competing institutional models.
The reforms arrive at a moment when competition among arbitral institutions is particularly intense. The revised rules of the Singapore International Arbitration Centre (‘SIAC’),[2] discussions surrounding future amendments to the London Court of International Arbitration (‘LCIA’)[3] Rules, the continued evolution of the Hong Kong International Arbitration Centre (‘HKIAC’),[4] and increased experimentation with expedited mechanisms have collectively reshaped expectations concerning efficiency and procedural economy.[5]
The ICC’s own caseload statistics reveal why these reforms matter. In 2025, 881 cases were filed under the ICC Arbitration Rules, while total new registrations reached 894 cases, making 2025 one of the institution’s three busiest years on record.[6] At year-end, 1,869 arbitrations remained pending, representing the largest active caseload in ICC history. December 2025 also witnessed the registration of the ICC Court’s 30,000th arbitration.[7] Parties originated from 147 jurisdictions, with India among the ten most frequently represented party nationalities in 2025, alongside the United States, Brazil, Spain, France, China, Germany, the United Arab Emirates, Mexico and Türkiye.[8] These figures underscore an important reality: the ICC increasingly serves as a genuinely global forum for dispute resolution, attracting parties from mature arbitration jurisdictions as well as rapidly expanding markets across Asia, the Middle East, Latin America and Africa. The 2026 reforms should therefore be viewed not merely as technical amendments but as part of a broader effort to maintain the ICC’s competitive position in an evolving arbitral landscape.
This article examines the principal innovations introduced by the 2026 Rules and considers their implications for international arbitration users, with particular reference to emerging trends relevant to Indian parties, counsel and arbitral institutions.
Moving Beyond Tradition: The End of Mandatory Terms of Reference
Perhaps the most symbolically significant reform concerns the treatment of Terms of Reference (‘ToR’). Since the earliest iterations of ICC arbitration, the ToR have constituted a defining feature of the institution’s procedural architecture. They have historically served to delineate the issues in dispute, identify claims and counterclaims, and establish the contours of the arbitral mandate.
The 2026 Rules fundamentally alter that position. Article 24 removes the mandatory requirement that tribunals draw up ToR.[9] Tribunals may continue to adopt ToR where considered beneficial, but they cease to be an obligatory procedural milestone. This development is unsurprising. Although ToR have often been praised for promoting procedural clarity, practitioners have long questioned their practical utility in complex disputes. Drafting and negotiating ToR can consume considerable time and resources, particularly in multiparty proceedings or arbitrations involving extensive jurisdictional objections. Once completed, they frequently become subordinate to procedural timetables, case management orders and evolving pleadings.
The ICC’s experience under the Expedited Procedure Provisions (‘EPP’) appears to have informed this reassessment. Expedited proceedings dispense with ToR entirely, yet empirical experience has not demonstrated any significant impairment of due process or procedural fairness. According to ICC materials, fewer than twenty-five per cent of tribunals operating under expedited procedures elected to prepare ToR voluntarily.[10] The revised approach therefore reflects an important philosophical shift. Rather than relying upon a documentary mechanism inherited from earlier eras of arbitration practice, the ICC now places greater emphasis upon active case management and early procedural engagement. The first Case Management Conference (‘CMC’) becomes the central procedural milestone. Under the new framework, parties are expected to identify the scope of their claims and defences at an earlier stage, since the tribunal’s permission may subsequently become necessary to introduce new claims after the first CMC. The practical effect may ultimately resemble the previous regime, but the mechanism is considerably more flexible.
From a comparative perspective, this amendment also aligns ICC arbitration more closely with other leading institutional rules. Neither the LCIA Rules, SIAC Rules nor HKIAC Rules require an equivalent document. In that sense, the ICC has abandoned one of its most distinctive procedural hallmarks in favour of greater convergence with prevailing international practice. Whether this proves beneficial will likely depend on the nature of disputes involved. In highly complex arbitrations involving states, sovereign entities or large-scale infrastructure projects, tribunals may still find value in producing a structured procedural roadmap. Nevertheless, the reform is likely to be welcomed by users seeking more streamlined proceedings.
Early Determination Enters the Rules
Efficiency has become the defining theme of modern arbitration reform. Few developments illustrate this more clearly than the codification of early determination. Although early dismissal mechanisms have existed in practice for several years, they previously derived their authority principally from the ICC’s Notes to Parties and Arbitral Tribunals. Their incorporation into Article 30 removes any residual uncertainty regarding the tribunal’s powers. Under Article 30, tribunals may determine claims or defences that are manifestly without merit or manifestly outside their jurisdiction.[11] This is not a revolutionary innovation. Comparable provisions already exist under SIAC Rule 47, HKIAC Article 44 and LCIA Article 22(viii).[12] Nonetheless, formal inclusion within the ICC Rules is significant. Historically, arbitrators occasionally hesitated to employ summary mechanisms because of concerns regarding enforceability, challenges to awards and allegations that procedural shortcuts compromised parties’ rights to be heard. Express rule-based authority may encourage more robust utilisation.
Commercially, the advantages are obvious. Parties increasingly seek mechanisms capable of filtering out legally deficient claims at an early stage. Lengthy proceedings involving speculative allegations can generate substantial costs even where the ultimate outcome appears foreseeable. Early determination offers tribunals a procedural tool analogous to summary judgment in litigation. At the same time, tribunals will likely exercise caution. Arbitration remains fundamentally consensual, and excessive enthusiasm for expedited dismissal risks undermining confidence in procedural fairness. Applications for early determination may themselves become contested satellite disputes. The success of Article 30 will therefore depend less upon its textual formulation than upon the willingness of tribunals to deploy it pragmatically and proportionately.
Emergency Arbitration Continues to Mature
Emergency arbitration has evolved from a novel experiment into an increasingly important component of international dispute resolution. Introduced in 2012, the ICC Emergency Arbitrator (‘EA’) procedure has now generated 287 applications.[13] In 2025 alone, thirty new emergency arbitrator proceedings were commenced.[14] The 2026 Rules seek to expand the utility of this mechanism. First, emergency proceedings may now be initiated against any party with respect to whom the ICC President is satisfied that an arbitration agreement binding such party may exist.[15] This amendment may prove especially significant in complex corporate structures, multiparty arrangements and disputes involving affiliates or entities whose participation remains contested.
Second, the Rules expressly recognise preliminary orders, including ex parte measures designed to prevent frustration of the underlying application.[16] Such measures resemble protective relief mechanisms encountered in other institutional frameworks and in domestic court practice. Their introduction acknowledges commercial realities. There are circumstances in which advance notice may defeat the purpose of urgent interim relief. Asset dissipation, transfers of shares, modifications to digital infrastructure or attempts to alter contractual relationships can occur rapidly.
Permitting tribunals to issue temporary orders designed to preserve the status quo may therefore enhance the effectiveness of emergency proceedings. The enforceability of such measures remains more complicated. Domestic courts continue to approach emergency decisions differently across jurisdictions. India provides an instructive example. The Supreme Court’s decision in Amazon.com NV Investment Holdings LLC v Future Retail Ltd[17] recognised the enforceability of emergency awards rendered under institutional rules and significantly strengthened confidence in emergency arbitration within the Indian legal framework. Although legislative reform continues to be debated, Amazon represents an important judicial affirmation of party autonomy and institutional innovation. At the international level, however, the position remains uneven. Recent litigation arising from investment treaty disputes demonstrates the continuing complexities associated with recognition and enforcement.
Highly Expedited Arbitration Provisions and the Search for Procedural Efficiency
If the removal of mandatory Terms of Reference reflects a willingness to abandon tradition, the introduction of the Highly Expedited Arbitration Provisions (‘HEAP’) demonstrates the ICC’s increasing confidence in procedural innovation. HEAP is a distinct mechanism from the emergency arbitration reforms discussed above: emergency arbitration remains a pre-tribunal procedure for urgent interim relief, including against parties who have not signed the arbitration agreement themselves, whereas HEAP is a wholly optional, expedited procedure for resolving the substantive dispute itself.
HEAP is arguably the most ambitious reform introduced by the 2026 Rules. Parties opting into the regime may obtain an award within three months from the first Case Management Conference.[18] The Rules also permit parties to agree that an award may be issued without reasons.[19] From a commercial perspective, the attraction is evident. Businesses engaged in supply-chain disputes, technology contracts, commodities transactions, energy trading, and medium-value cross-border claims frequently prioritise speed over procedural elaboration. Lengthy proceedings may erode commercial relationships, increase uncertainty, and undermine the practical value of the remedy eventually obtained.
The ICC appears to have recognised that arbitration increasingly competes not merely with other arbitral institutions but with litigation reforms, online dispute resolution mechanisms, adjudicatory boards, expert determination procedures and mediation-based settlement models. HEAP responds to this competitive environment. At the same time, its practical uptake remains uncertain. Three months represents an exceptionally compressed timeframe for international arbitration.
Parties contemplating HEAP clauses will likely need to consider:
i. whether factual disputes are sufficiently narrow;
ii. whether document production can be restricted;
iii. whether witness evidence is genuinely necessary;
iv. whether enforceability concerns arise from abbreviated reasoning;
v. whether internal governance structures permit rapid decision-making.
There is also an important cultural question. Arbitration has traditionally justified its legitimacy through procedural thoroughness and party autonomy. HEAP represents a recalibration towards speed and commercial functionality. Whether users embrace this model will depend upon their willingness to sacrifice certain procedural features in exchange for predictability and efficiency.
Expedited Procedure Provisions Continue to Expand
The ICC’s Expedited Procedure Provisions (‘EPP’) have become one of the institution’s most successful procedural innovations. In 2025 alone, 169 new cases proceeded under the expedited regime, bringing the total number of EPP cases administered by the ICC to more than one thousand.[20] The 2026 Rules increase the threshold for automatic application from US$3 million to US$4 million.[21] This is a significant development. Many disputes previously regarded as unsuitable for expedited treatment may now fall within the scope of EPP. For small and medium-sized enterprises, the change may be particularly attractive. Traditional criticisms of arbitration have often centred on cost and duration. By broadening expedited procedures, the ICC attempts to make institutional arbitration more accessible to users whose disputes are commercially important but do not justify full-scale proceedings. At the same time, parties retain the ability to opt out of expedited arbitration.[22] This flexibility is important. Not all US$4 million disputes are procedurally simple. Construction disputes, shareholder disagreements, technology licensing conflicts and infrastructure claims may involve substantial complexity despite modest monetary values. The revised provisions therefore preserve an appropriate balance between efficiency and party autonomy.
Disclosure Obligations and Conflict Management
Another important theme running through the 2026 Rules is enhanced transparency. The disclosure regime has undergone substantial refinement. The Rules now expressly provide that doubts concerning disclosure should be resolved in favour of disclosure.[23] Conversely, disclosure itself should not automatically be interpreted as evidence of bias or lack of independence.[24] These propositions may appear self-evident. Yet they address a persistent practical concern. Arbitrators frequently face uncertainty when determining whether a professional connection, prior appointment or institutional affiliation warrants disclosure. Over-disclosure risks creating unnecessary challenges. Under-disclosure creates concerns regarding impartiality. By codifying these principles within the Rules themselves, the ICC attempts to reduce uncertainty and encourage greater transparency. Equally significant is the introduction of Article 12(5), which requires parties to submit lists of entities and individuals relevant for conflict-check purposes.[25] This represents a more proactive approach to independence assessment. Complex commercial groups often comprise numerous subsidiaries, affiliates, shareholders and investment vehicles. Failure to identify these entities early may result in later challenges and procedural disruption. Mandatory disclosure lists may therefore improve the efficiency of arbitrator appointments and reduce disputes concerning conflicts.
Confidentiality: Progress, but Not a Complete Solution
Confidentiality remains one of arbitration’s most frequently cited advantages. Yet it is also one of its most misunderstood characteristics. Contrary to common assumptions, international arbitration does not necessarily operate under a comprehensive default confidentiality regime. The ICC has historically adopted a relatively restrained approach. The 2026 Rules introduce an express confidentiality obligation applicable to arbitrators through Article 12(8).[26] This is an important development.
However, the Rules stop short of imposing automatic confidentiality obligations upon parties themselves. This distinguishes the ICC framework from the LCIA Rules and SIAC Rules, both of which contain more extensive confidentiality provisions. The practical implication is straightforward. Parties seeking comprehensive confidentiality protections should continue to address these issues expressly, either within arbitration agreements or through procedural orders. Particularly sensitive disputes involving trade secrets, technology transfers, financial institutions, defence contracts or state-owned enterprises may require bespoke confidentiality arrangements. The ICC reforms improve the position but do not eliminate the need for careful drafting.
Tribunal Secretaries and Institutional Integrity
The growing use of tribunal secretaries has generated considerable debate over the past decade. Proponents emphasise efficiency. Critics occasionally express concern regarding delegation of decision-making authority. The 2026 Rules respond by introducing a dedicated provision governing tribunal secretaries. Article 44 subjects tribunal secretaries to requirements of independence and impartiality analogous to those applicable to arbitrators themselves.[27] The reform is modest but significant. It reflects the reality that tribunal secretaries increasingly play an important role in modern arbitration, particularly in large and document-intensive proceedings. Formal regulation may enhance confidence in their appointment while providing greater clarity regarding acceptable practices.
Truncated Tribunals and Late-Stage Procedural Risk
One of the more technical yet potentially impactful amendments concerns truncated tribunals. Under Article 16, the ICC Court may now decide to proceed with a tribunal notwithstanding the death, resignation or removal of an arbitrator after the last hearing or final substantive submissions.[28] Previously, tribunals generally became truncated only following closure of proceedings. The amendment seeks to address a genuine practical problem. Late-stage disruptions can be enormously costly. Replacing an arbitrator after completion of hearings may require reconsideration of evidence, rehearing witnesses or revisiting procedural steps that parties assumed were complete.
By permitting tribunals to continue functioning in appropriate circumstances, the Rules reduce the risk of substantial delay. The reform reflects a broader trend towards procedural pragmatism. Increasingly, arbitral institutions appear willing to prioritise continuity and efficiency over rigid adherence to traditional procedural assumptions.
Costs and Institutional Administration
The 2026 Rules also introduce revisions concerning costs and institutional administration. Administrative expenses have been reduced for disputes valued below US$10 million, while targeted increases apply to higher-value claims.[29] Responsibility for advances on costs is now primarily entrusted to the Secretary General, whereas the ICC Court retains authority over arbitrators’ fees and administrative expenses.[30] These changes are unlikely to generate significant doctrinal discussion. Nevertheless, they demonstrate continuing efforts to enhance transparency and predictability. For many users, cost remains a central consideration when selecting arbitral institutions. Incremental adjustments of this nature may therefore have broader competitive implications.
The Indian Perspective
For Indian users, the 2026 Rules merit close attention. India’s return to the ICC’s top ten nationality rankings confirms its growing significance within the international arbitration ecosystem.[31] The Supreme Court’s judgment in Amazon.com NV Investment Holdings LLC v Future Retail Ltd [32] has already demonstrated judicial willingness to accommodate evolving institutional practices. Simultaneously, ongoing discussions surrounding legislative reform indicate an increasing emphasis upon emergency arbitration, digitalisation and institutionalisation. Indian parties are therefore likely to encounter many of the innovations introduced by the ICC Rules not as abstract procedural concepts but as practical tools capable of influencing transaction planning, dispute strategy and enforcement considerations.
For counsel drafting arbitration clauses, several questions now arise:
i. should parties opt into HEAP?
ii. should they retain ToR contractually?
iii. should confidentiality obligations be expanded by agreement?
iv. does expedited arbitration align with the commercial realities of the transaction?
v. should emergency arbitration mechanisms be expressly reinforced?
vi. how should disclosure obligations be addressed in multiparty arrangements?
These questions illustrate a broader shift. Arbitration clauses increasingly resemble sophisticated procedural frameworks rather than simple jurisdictional provisions.
Conclusion
The 2026 ICC Arbitration Rules represent a coherent and carefully calibrated response to changing user expectations. Their most notable achievement may not lie in any individual reform but in their underlying philosophy. The Rules recognise that arbitration users increasingly expect proceedings that are faster, more adaptable and more commercially responsive. The abolition of mandatory ToR, codification of early determination, introduction of HEAP, expansion of emergency arbitration and refinement of disclosure obligations collectively point towards a procedural model that prioritises efficiency without abandoning the core values of party autonomy and procedural fairness. At the same time, the reforms are unlikely to transform arbitration overnight. Questions concerning enforceability, sovereign immunity, confidentiality and due process remain jurisdiction-specific and often resistant to institutional standardisation. Nevertheless, the 2026 Rules confirm that the ICC intends to remain at the forefront of institutional innovation. Whether users ultimately embrace HEAP, utilise early determination more aggressively, or dispense permanently with Terms of Reference remains to be seen. What is already evident, however, is that the ICC has signalled a clear direction of travel: international arbitration is expected not merely to resolve disputes, but to do so with greater speed, transparency and procedural intelligence than ever before.
** Dual-qualified (England & Wales and India) commercial litigator and international arbitration practitioner specialising in international commercial arbitration and investor-state dispute settlement. Currently practising as a barrister at The Barrister Group in London and as an advocate in New Delhi. She is an alumna of Queen Mary University of London and a member of The Honourable Society of Gray’s Inn. Email: divya.kesar@tbgbarrister.co.uk
[1] ICC Arbitration Rules 2026 https://iccwbo.org/dispute-resolution/dispute-resolution-services/arbitration/rules-procedure/2026-arbitration-rules/ accesses on 1 July 2026.
[2] Singapore International Arbitration Centre, Arbitration Rules of the Singapore International Arbitration Centre (7th edn, 2025).
[3] London Court of International Arbitration, ‘LCIA Announces Consultation on Revising Arbitration Rules’ (LCIA News, 2026) lcia.org accessed 1 July 2026.
[4] Hong Kong International Arbitration Centre, HKIAC Administered Arbitration Rules (2024).
[5] International Chamber of Commerce, ICC Rules of Arbitration (2021) app VI (Expedited Procedure Rules); see also SIAC Rules 2025, sch 2 (Streamlined Procedure).
[6]https://iccwbo.org/news-publications/news/icc-releases-preliminary-2025-dispute-resolution-statistics/ accessed on 1 July 2026.
[7] Ibid.
[8] International Chamber of Commerce, ICC Dispute Resolution 2025 Statistics (ICC Publication No. DRS004EN, 2026), 4, 7 and Table 02.
[9] ICC Arbitration Rules 2026, art 24; confirmed in ICC Dispute Resolution 2025 Statistics, ICC Publication No DRS004EN (2026) 18 n 39 (noting that the 2026 Rules ‘remove the requirement to establish Terms of Reference, while maintaining the option to establish them as a useful case management tool’).
[10] Alexandra van der Meulen et al., The 2026 ICC Arbitration Rules: What’s New and Why It Matters, Freshfields Bruckhaus Deringer: Risk & Compliance Blog (June 1, 2026), https://www.freshfields.com/en/our-thinking/blogs/risk-and-compliance/the-2026-icc-arbitration-rules-whats-new-and-why-it-matters-102n0q4 accessed on 1 July 2026.
[11] ICC Arbitration Rules 2026, art 30.
[12] LCIA Rules 2020 art 22(viii); HKIAC Administered Arbitration Rules 2024 art 44; SIAC Rules 2025 art 47
[13] See ICC Dispute Resolution 2025 Statistics (ICC Publication No DRS004EN, 2026) 18 (noting that the 30 applications filed in 2025 brought the historical cumulative total to 287 applications since 2012).
[14] ICC, ICC Releases Preliminary 2025 Dispute Resolution Statistics (12 February 2026).
[15] ICC Arbitration Rules 2026, Appendix IV art 1(2)(c).
[16] ICC Arbitration Rules 2026, Appendix IV art 7.
[17]Amazon.com NV Investment Holdings LLC v Future Retail Ltd (2022) 1 SCC 209.
[18] ICC Arbitration Rules 2026, Appendix VI art 7(1): the arbitral tribunal shall render the final award within three months of the initial Case Management Conference, extendable only by the President of the ICC Court on a reasoned request or on the President’s own initiative.
[19] ICC Arbitration Rules 2026, Appendix VI art 7(2): the parties may agree that no reasons are to be given in the award.
[20] ICC Dispute Resolution 2025 Statistics (ICC Publication No. DRS004EN, 2026), 6: 169 new cases were administered under the EPP in 2025 (158 by automatic application, 11 by opt-in), bringing the total administered since 2017 to 1,034 cases resulting in 591 awards.
[21] ICC Arbitration Rules 2026, Appendix V art 1(3).
[22] ICC Arbitration Rules 2026, Appendix V art 1(4)(b): the Expedited Procedure Provisions shall not apply where the parties have agreed to opt out.
[23] ICC Arbitration Rules 2026, art 12(2).
[24] ICC Arbitration Rules 2026, art 12(4).
[25] ICC Arbitration Rules 2026, art 12(5).
[26] ICC Arbitration Rules 2026, art 12(8).
[27] ICC Arbitration Rules 2026, art 44(2).
[28] ICC Arbitration Rules 2026, art 16(5).
[29] ICC Arbitration Rules 2026, Appendix III art 6. HSF Kramer, ‘ICC Arbitration Rules 2026: Faster and more interventionist arbitration’ (22 May 2026) confirms the ICC’s own characterisation: costs have been reduced for arbitrations below US$10 million, with targeted upward adjustments for larger disputes ‘reflecting changes in the scale of global disputes’.
[30] ICC Arbitration Rules 2026, Appendix III art 4 (‘Advance on Costs’).
[31] International Chamber of Commerce, ICC Dispute Resolution 2025 Statistics (ICC Publication No. DRS004EN, 2026), Table 02.
[32] Amazon.com NV Investment Holdings LLC (n 17).