A court-appointed expert is instructed by the court, answers only to the court, and files a report that usually determines the financial outcome of the case. A party-appointed expert is instructed by you, forms part of your evidence, and is used to quantify a claim before filing, to test the other side's figures, or to build a technical objection to the court expert's report. You do not choose whether to have a court expert: the court decides that. You choose whether to have your own.
Who Instructs Decides Everything Else
Every practical difference between the two roles follows from a single fact: who gives the instruction. The court-appointed expert receives a mandate from the court, cannot be directed by a party, and delivers to the court file. The party-appointed expert receives a mandate from the client and delivers to the client, who then decides whether to put the work into the proceedings at all.
That difference drives the weight each carries, the access each has to documents, the cost each incurs, and the questions each can properly answer. Understanding it prevents the most common and most expensive misunderstanding in UAE financial disputes: assuming that a well-prepared party report will simply displace an unfavourable court report. It will not.
The Court-Appointed Expert
Appointment is by order of the court, made from the roster of experts maintained by the Ministry of Justice by specialty under Article 5 of Federal Decree-Law No. 21 of 2022, and the assignment decision must detail the expert's task and powers under Article 111 of Federal Decree-Law No. 35 of 2022 on Evidence. Parties do not nominate the expert, though they may apply to replace an appointed expert on grounds such as conflict of interest, insufficient qualification, or procedural irregularity.
The court order defines the mandate: the specific financial questions to be answered. The expert cannot expand it, cannot decide questions of law, and cannot address matters not referred. Both parties are notified of expert meetings, produce documents through that process, and receive the report through the court file.
The court is not bound to adopt the findings: Article 122(2) of the Evidence Law makes the expert's opinion non-binding and requires the court to give reasons if it departs from it. In practice UAE courts give substantial weight to a well-reasoned court expert report on financial matters, and a judgment departing from it will explain why. In most financial disputes, the court expert's number becomes the number in the judgment unless a credible technical objection is raised.
The Party-Appointed Expert
A party expert is retained directly, and the engagement is defined by the client and counsel. There are three legitimate uses, and each is different work.
- Quantification before filing. Establishing what the claim is actually worth, on the documents you hold, before committing to a figure in the statement of claim. Overstated claims damage credibility for the remainder of the case.
- Preparation for the court expert. Organising records, reconciling accounts, and preparing the documentary submission so that the court expert receives a complete and coherent file rather than a box of unsorted material.
- Technical objection. Reviewing the filed court expert report and identifying specific methodological errors, untraceable figures, unexamined documents, or unanswered questions from the mandate.
The third use is where a party expert earns the fee most reliably. A general objection that a report is wrong carries very little weight. An objection identifying the paragraph, the figure, the source document, and the methodological error is one the court may refer back to the appointed expert for response.
One further use is worth naming, because parties often miss it. Where the court has not yet fixed the mandate, a party expert can help counsel draft the questions actually worth referring. Mandates drafted without financial input tend to be either too broad to produce a usable number or too narrow to capture the real loss, and once the order is issued the wording is difficult to reopen.
How Courts Weigh Each
A party-commissioned report is admissible as that party's evidence. It is not independent judicial analysis and does not carry equivalent authority, and a court will read it knowing who paid for it and who selected the questions.
Under Article 119(2) of the Evidence Law, the initial report goes to the parties, who have at least three business days to comment, and the expert replies within five, before the final report is filed with the case management office. Under Article 121, the court may then question the expert, let the parties discuss him, order the report completed or corrected, or appoint another expert.
This is not a reason to avoid one. It is a reason to use it for what it does well: precision on a defined technical point, rather than a competing narrative of the whole dispute. The party report that reads as advocacy is discounted; the party report that isolates three specific errors in a court expert's calculation can change the outcome.
Cost, Access, and Control
The court expert's fees are covered by a deposit ordered at appointment under Article 112 of the Evidence Law, with Article 30 of Decree-Law No. 21 of 2022 governing expert fees, and the final allocation follows the outcome. You pay, but you do not control the scope, the timetable, or the conclusions.
A party expert is your cost entirely, and you control the scope. What you do not have is the court expert's access: Article 115 of the Evidence Law entitles the court expert to hear the litigants and request books, records, and documents, and Article 116 refers a refusal back to the court, while your expert works only on what you hold or what has been disclosed in the proceedings. That access gap is the main practical limit on party expert work, and it is why the same analysis can produce a narrower answer.
Arbitration Follows Different Rules
The position above describes litigation before the onshore UAE courts. In arbitration, party-appointed experts are ordinary and often the primary route for expert evidence, with tribunals commonly directing experts to meet and produce a joint statement of agreed and disputed points. Article 3 of Federal Decree-Law No. 21 of 2022 Regulating the Profession of Experts before Judicial Authorities expressly allows local judicial authorities and arbitration centres to regulate experts under their own rules. Proceedings before the DIFC Courts and the ADGM Courts operate in English under the DIFC Courts Rules and the ADGM Courts procedural rules. Establishing which forum governs before commissioning expert work avoids paying for a report in the wrong form.
When You Need Each
You need a court-appointed expert whenever the court orders one, which in a contested financial claim is most of the time. Your influence is limited to the framing: counsel can propose the questions the court refers, and a well-drafted mandate is worth more than any later objection.
You need your own expert when the amount in dispute justifies verifying your own claim before filing; when your records are disorganised enough that the court expert would otherwise work from an incomplete file; when a filed report contains findings you believe are technically wrong; or when the dispute is in arbitration, where party experts are the norm.
Timing follows from that. Party expert work is most valuable before the claim is filed and immediately after the court report lands, and least valuable in the months between, when the court expert controls the process and there is little for a party expert to act on. Retaining one for the whole period bills time against a stage where the work cannot influence anything.
Using Both, and the Conflict Rule
The two roles are complementary in sequence: your expert prepares the file and the claim, the court expert conducts the judicial analysis, your expert reviews the resulting report for technical error. That sequence is normal and proper.
What is not permissible is one person occupying both roles in the same matter. Under Article 14(6) of Federal Decree-Law No. 21 of 2022 Regulating the Profession of Experts before Judicial Authorities, which repealed Federal Law No. 7 of 2012, 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. Article 113 of Federal Decree-Law No. 35 of 2022 on Evidence requires disclosure of any relationship or interest before the expert starts, with removal for failure to disclose, and Article 114 sets out the disqualification grounds and procedure the other side would use.
How AABDxb Helps
AABDxb acts in both capacities in separate matters: as a court-appointed accounting expert where the court appoints, and as a party-appointed expert for quantification, file preparation, and technical review of reports filed by others. Its founder, Abdulrahman AlNuaimi, is Dubai Court Expert No. 235, Abu Dhabi Judicial Department Expert No. 198 and Ministry of Justice Expert No. 651, and is licensed by the UAE Ministry of Economy (Licence 948). The two are never combined in the same dispute. Where a filed report is under review, the work product is a specific written objection identifying paragraphs, figures, and source documents.