An expert report is admissible in a UAE court when the appointment was validly made, the expert stayed within the mandate the court set, the methodology is disclosed and can be followed, the report is filed in Arabic in the required form, and the parties were given a real opportunity to be heard and to object. Seniority, reputation, and the confidence of the conclusions do not make a report admissible. Procedure and traceability do.
Admissibility and Weight Are Two Separate Questions
Parties often merge two arguments that courts treat separately. Admissibility asks whether the report properly forms part of the case file at all. Weight asks how much the court relies on it once admitted. Under Article 122(2) of the Evidence Law the expert's opinion does not bind the court, which must give reasons if it departs from it, and Article 3 requires the court to weigh conflicting evidence and state its reasons. A report can therefore be admissible and still carry almost no weight, and challenges aimed at the wrong question tend to fail.
Most successful attacks in financial disputes target weight, not admissibility: they accept the report into the file and then dismantle the method. Attacks on admissibility succeed less often, but when they do the effect is severe, because the report is excluded rather than merely discounted, and the court may order a fresh expert appointment with the delay and cost that follows.
A Valid Appointment
Court-appointed expertise begins with an order of the court, and the order is the source of the expert's authority. Under Article 111 of Federal Decree-Law No. 35 of 2022 on Evidence in Civil and Commercial Transactions, the assignment decision must detail the expert's task and powers, and Article 112 governs the deposit of fees. Where a report is produced without a valid appointment covering the work, the foundation is missing.
The expert must hold the right registration for the forum. The Ministry of Justice maintains the roster of experts by specialty under Article 5 of Federal Decree-Law No. 21 of 2022 Regulating the Profession of Experts before Judicial Authorities, which repealed Federal Law No. 7 of 2012. Article 3 of the same Decree-Law allows local judicial authorities and arbitration centres to regulate experts under their own rules, and Article 4(2) permits the litigants to agree on an unregistered expert with the court's approval. The DIFC Courts and the ADGM Courts operate their own frameworks and their own panels: registration in one system does not confer eligibility in the other. Verifying that the expert's registration matches the forum and the specialisation is a basic and frequently skipped check.
The same requirements apply where the court appoints more than one expert, or appoints a supplementary expert after objections to a first report. A three-member panel is common in larger financial disputes, and each member must satisfy the registration and independence requirements individually. Where a panel divides, Article 117 of the Evidence Law requires the dissenting opinion to be recorded in the report, and Article 16 of Decree-Law No. 21 of 2022 governs committees of experts and dissent. Presenting a consensus that does not exist is therefore both a defect and a risk, because a concealed disagreement discovered later damages the whole report.
The Mandate Sets the Boundary
An expert answers the questions referred, and only those. Three excursions recur, and each is a genuine ground of objection.
- Opinions on questions of law. Contract interpretation, liability, and the legal characterisation of a transaction belong to the court. An expert who states that a party breached an obligation has crossed from accounting into adjudication.
- Findings beyond the referred period or entities. An expert instructed on one company's accounts for one financial year who reports on affiliates or later years has exceeded the mandate, however interesting the findings.
- Conclusions on credibility. Whether a witness is truthful is for the court. The expert reports what the records show and what they do not show.
Where an expert believes the mandate is too narrow to answer the question sensibly, the correct route is to say so and ask the court to widen it, not to widen it unilaterally.
Independence, and How It Is Lost
A court-appointed expert answers to the court, not to the party paying the deposit. Independence is tested by the relationship, not by the expert's own assurance of impartiality. Article 113 of the Evidence Law requires the expert to disclose any relationship or interest before starting, and failure to do so is itself a ground for removal; Article 114 sets out the disqualification grounds and the procedure. Under Article 14(6) of Decree-Law No. 21 of 2022 an expert may not accept an assignment in a dispute where a party previously consulted him or where he issued a consulting report, and Article 15 governs withdrawal.
Timing matters. An objection to the expert's independence is raised when the ground becomes known, ideally at appointment. A party that knows of a conflict, says nothing, waits for an unfavourable report, and then raises the conflict will find the objection materially weaker.
Form, Language, and Filing
Proceedings before the onshore UAE courts are conducted in Arabic, and the expert report is filed in Arabic. Supporting documents in another language are generally accompanied by legal translation. A report circulated to the parties in English as a courtesy is not the filed report; the Arabic text on the court file governs.
The report is filed with the court, and the parties receive it through the court file rather than privately from the expert. An expert who sends findings directly to one party before filing creates a procedural irregularity that is straightforward to demonstrate.
A Traceable Evidence Base
The most common substantive weakness in financial expert reports is a figure that cannot be traced to a source. Every material number should be followed from the conclusion, through the working, to the document or ledger entry it came from, and that document should be identified in the annexes.
The report should also state what was requested and not provided. A schedule of documents sought, received, and refused converts an evidential gap into a recorded fact rather than a silent assumption, and it protects the report when a party later argues that the expert overlooked material it never produced.
Method should be stated plainly enough for another expert to reproduce the result: the basis of calculation, the assumptions, the treatment of contested items, and the reason for choosing one recognised approach over another. Article 117 of the Evidence Law requires the report to set out the task, the parties' statements, the documents and their technical analysis, and the grounds precisely and clearly, so an unexplained method is both a breach of that requirement and the single most productive target for a technical objection.
The Parties Must Be Heard
Expert work in UAE proceedings is not conducted privately. The expert convenes meetings, notifies the parties, receives their submissions and documents, and records what was said and produced. Minutes of those meetings, with attendance recorded, form part of the report's foundation.
Article 115 of the Evidence Law entitles the expert to hear the litigants and to request books, records, and documents, and Article 116 refers a refusal back to the court. Under Article 119 the initial report is delivered to the litigants with at least three business days for comments, the final report is filed with the case management office, and late objections are limited. Failure to notify a party of a meeting, or to consider submissions actually made, is therefore a due process defect and one of the more effective grounds of challenge, because it does not require the objecting party to prove the underlying figures are wrong.
Grounds of Challenge That Recur
In practice, objections cluster: the expert exceeded the mandate; the method is unstated or unreproducible; figures cannot be traced to source documents; a party was not heard or its documents were not addressed; the expert lacked the relevant registration or specialisation; a conflict of interest existed; the report answers a different question from the one referred; or the report opines on law rather than on accounts.
General objections do not work. An assertion that the report is wrong, unsupported by a specific figure, a specific document, or a specific methodological error, carries very little weight. The objection that succeeds identifies the paragraph, the number, and the reason.
Decide also what you are asking the court to do. An objection can seek re-referral of specific questions to the same expert, which is quicker and often sufficient where the defect is an unanswered question or an unexamined document; or the appointment of a different expert, which is the appropriate request where the defect goes to independence or competence. Article 121 of the Evidence Law gives the court the options: it may question the expert, allow the parties to discuss him, order corrections, or appoint another expert. Asking for a new expert when a re-referral would fix the problem invites refusal, and the objection is then spent.
How AABDxb Helps
AABDxb prepares financial expert reports for UAE court proceedings and reviews reports filed by other experts on behalf of parties considering an objection. The firm is led by a Ministry of Justice registered court-appointed accounting expert, so reports are built to the procedural standard described here: mandate discipline, traceable figures, disclosed method, and a documented record of what each party produced.