What this guide covers
DIAC, SIAC, and arbitrateAD are the three institutions most frequently specified in UAE commercial arbitration agreements. This guide provides a structured side-by-side comparison of their 2024/2026 rules to help counsel and parties choose the right institution for their dispute.
Institutional overview
DIAC (Dubai International Arbitration Centre): Rules effective March 2022. Dubai-based institution. Absorbed former DIFC-LCIA. Administered ~750 cases in 2024. Seats: Dubai onshore, DIFC, ADGM, international. World's 5th largest arbitral institution by caseload. Admin by Dubai government body.
SIAC (Singapore International Arbitration Centre): Rules effective 1 January 2025 (7th edition). Singapore-based. ~500 cases per year. Truly international institution with global caseload, multiple offices (Shanghai, Seoul, New York, Mumbai, Dubai). Singapore seat is the default. Widely used for Asia-Pacific and Middle East transactions.
arbitrateAD (Abu Dhabi International Arbitration Centre): Rules effective February 2024. Abu Dhabi-based. Rebranded from ADCCAC. Fewer cases than DIAC but significant Abu Dhabi sector presence (energy, real estate, government). Seats: Abu Dhabi onshore, ADGM, international.
Key rules comparison
Expedited threshold: DIAC AED 1M (~USD 272,000) | SIAC SGD 10M (~USD 7.5M) | arbitrateAD AED 3M (~USD 817,000)
Emergency arbitrator appointment: DIAC 1 business day | SIAC 1 business day | arbitrateAD 2 business days
Emergency ex parte: DIAC — no express provision | SIAC — possible (tribunal discretion) | arbitrateAD — YES, Art 31.7
Early determination: DIAC — not express | SIAC — Rule 41 (Early Determination) | arbitrateAD — not express
Group of Companies: DIAC — Art 9 joinder | SIAC — Rule 7.9 (express) | arbitrateAD — joinder provisions
Third-Party Funding disclosure: DIAC — Art 18 | SIAC — Rule 24(l) | arbitrateAD — Art 23
Cybersecurity protocol: DIAC — general confidentiality | SIAC — general security | arbitrateAD — express Art 29
Cost comparison for AED 10M dispute
For a AED 10M (~USD 2.7M) dispute with sole arbitrator, standard track:
DIAC: Registration ~AED 5,000 + Admin ~AED 55,000 + Arbitrator ~AED 150,000 = total ~AED 210,000
SIAC: Registration SGD 3,000 (~AED 8,000) + Admin ~SGD 40,000 (~AED 110,000) + Arbitrator ~SGD 100,000 (~AED 275,000) = total ~AED 393,000
arbitrateAD: Registration ~AED 10,000 + Admin ~AED 60,000 + Arbitrator ~AED 160,000 = total ~AED 230,000
DIAC is the most cost-effective for UAE domestic disputes. SIAC is more expensive for small-to-medium disputes due to Singapore arbitrator fee rates, but competitive for complex international matters where the Singapore arbitrator pool is genuinely needed. arbitrateAD and DIAC are broadly comparable.
Which institution for which dispute
DIAC: Dubai commercial contracts; UAE domestic disputes; contracts where UAE onshore or DIFC seat is preferred; disputes under AED 1M benefiting from expedited track; parties seeking a UAE-domestic institutional framework.
SIAC: International contracts with Asia-Pacific or Middle East nexus; contracts where Singapore neutral seat is preferred; high-value complex disputes where Singapore arbitrator pool depth is valuable; contracts with Asian counterparties (Chinese, Indian, Southeast Asian companies prefer SIAC for familiarity).
arbitrateAD: Abu Dhabi commercial contracts; ADNOC/Mubadala/ADQ-related disputes; construction and energy in Abu Dhabi; government contracts; parties wanting ADGM seat under a UAE institution; disputes where ex parte emergency measures may be needed (Art 31.7).
Practical checklist
- Match institution to transaction nexus: Dubai contract → DIAC; Abu Dhabi contract → arbitrateAD; Asian/international contract → SIAC
- Check counterparty preference: negotiate the institution; understand counterparty's familiarity with each institution's rules
- SIAC for enforcement diversity: for disputes where enforcement may be needed in Asia, Europe, and UAE, SIAC's caseload in those jurisdictions provides familiarity with Singapore-seated awards
- Emergency procedure: if ex parte emergency relief is critical, only arbitrateAD expressly permits ex parte EA orders (Art 31.7)
- Cost sensitivity: DIAC and arbitrateAD are cheaper for UAE-currency disputes; SIAC applies Singapore dollar fees that translate to higher UAE amounts for small claims
- Seat flexibility: all three institutions can administer arbitrations with multiple seat options — specify the seat and the institution separately
What we'd typically advise
In practice, the choice between these three institutions is less important than the quality of the arbitrators and the efficiency of the proceedings. A well-chosen SIAC tribunal will produce a better outcome than a poorly-chosen DIAC tribunal, and vice versa. Focus at least as much energy on arbitrator selection as on institution selection. The institution matters for caseload efficiency, cost structure, and institutional reputation — but the tribunal matters for the award.
Frequently asked questions
Is a SIAC clause in a UAE contract enforceable in UAE courts?
Yes. A SIAC arbitration clause specifying Singapore seat is a valid arbitration agreement under UAE law (FDL 6/2018 Art 5 and Art 7). UAE courts will refer disputes to SIAC arbitration in accordance with the clause. A SIAC award with Singapore seat is a foreign arbitral award enforceable in UAE under the NYC.
Can a DIAC clause specify a Singapore seat?
Yes — institution and seat are separable. "DIAC Rules, Singapore seat" is possible but unusual. If Singapore seat is desired, SIAC is the natural institutional partner. DIAC + Singapore seat creates an unusual institutional configuration that may complicate the institutional relationship.
What is the minimum claim amount for SIAC expedited procedure in a UAE dispute?
SIAC expedited procedure (Rule 5A) applies where the total claim/counterclaim amount does not exceed SGD 10M (approximately AED 27.5M or USD 7.5M). This is a high threshold — most UAE commercial disputes below AED 27.5M potentially qualify for SIAC expedited procedure. Parties may also apply for expedited procedure above the threshold by agreement or application.
Does SIAC have a physical office in Dubai?
SIAC opened a representative office in Dubai in 2022. The office supports parties and counsel in the UAE but does not administer cases — all case administration is through SIAC Singapore. The Dubai presence facilitates CMCs and hearings in Dubai for Singapore-seated arbitrations.
Which institution is best for a AED 50M construction dispute in Abu Dhabi?
For an Abu Dhabi construction dispute, arbitrateAD or DIAC with Abu Dhabi/ADGM seat are natural choices. arbitrateAD has deeper Abu Dhabi construction sector expertise and local institutional familiarity. For an international contractor (European or Asian) who wants a more internationally neutral forum, DIAC with DIFC seat or SIAC are alternatives. The specific contract terms, parties, and their counsel will influence the decision.
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Published 20 May 2026. General information only — not legal advice. Contact us for matter-specific advice.