Commission and Complex Examinations: When Each Is Ordered

A complex case often runs into the same wall: one expert is not enough. Either there is too much material for a single person, or the questions sit in several fields of knowledge at once. Ukrainian procedural law answers these two situations with two distinct mechanisms — the commission examination and the complex examination. They should not be confused, because the choice determines who joins the panel, how the questions are divided, and who signs the opinion.

One word, “several” — two different mechanisms

Both a commission and a complex examination mean that more than one expert works on the case. But the reason differs in each, and that difference is the first thing to grasp before drafting a motion.

• A commission examination involves several experts of the same specialty. It is ordered when the case is large in volume or of heightened complexity, and a single specialist would struggle to work through the mass of documents within a reasonable time.
• A complex examination involves experts of different specialties (fields of knowledge). It is ordered when answering the questions requires knowledge from several fields at once, and no single specialist covers the whole subject.

Feature	Commission examination	Complex examination
Composition	Two or more experts of one specialty	Experts of different specialties (fields of knowledge)
Reason to order	Large volume or heightened complexity	Knowledge of several fields needed at once
What each studies	The same objects — jointly	Their own part of the subject — by competence
Opinion	Joint, agreed	Synthesized from component parts
Right to a separate opinion	Yes, in case of disagreement	Yes, in case of disagreement

In short: a commission examination is “more hands” of one profession; a complex examination is “different professions at one table.”

Commission examination: more hands of one specialty

When it is ordered

A commission examination is worth initiating when the subject itself is economic, but its scale is beyond a single specialist:

• a large number of primary documents, accounting registers and bank statements over a long period;
• heightened complexity of calculations, where cross-checking the methodology matters;
• a case of principled importance, where the parties want the opinion to rest on the agreed position of several experts rather than one.

The point is that all experts share the same specialty: in forensic economic matters this means, for example, several economic experts working through the same body of documents together.

How the panel works and who signs the opinion

The experts on the panel study the same objects and reach a joint opinion. If they all agree, they all sign it. If one member of the panel disagrees with the shared answers, they do not “dissolve” into the majority — they have the right to set out a separate position, which is attached to the opinion. This is an important safeguard: a specialist’s disagreement does not disappear but becomes part of the case file that the court evaluates.

Complex examination: different fields at one table

When it makes sense in economic cases

A complex examination is needed where economic questions intertwine with other fields, and one body of knowledge without the other cannot produce an answer. Typical combinations:

• economist + property appraiser — when you must both establish an asset’s market value and trace how it is reflected in the accounts (the classic pattern in cases about stripping assets at an understated price);
• economist + construction expert — when the contract sum under a works agreement depends on the actual volume and cost of the work;
• economist + merchandise expert (tovaroznavets) — when the amount of loss depends on the characteristics and value of the goods;
• economist + process engineer — when accounting data must be reconciled with real production consumption norms.

An example from practice (generalized). To prove that property was disposed of at a loss to a company, you first need to establish its true market value — that is the appraiser’s competence — and then show how the transaction was (or was not) reflected in the accounts and reporting, which is the economist’s field. A single specialty gives no answer here; the work must be genuinely complex.

Who studies what and who signs

In a complex examination, each specialist studies their own part of the subject — the part within their field — and signs the portion of the opinion that reflects their own research. The overall (summary) conclusion, which synthesizes the results, is signed by the experts competent to evaluate the combined findings and formulate a single answer. If there is no agreement on the shared answers, the right to a separate opinion applies again.

The expert’s right to a separate opinion

This is not a formality but a procedural safeguard against “pushing through” a convenient answer.

• If a panel member disagrees with the joint opinion in whole or in part, they set out their position separately and give reasons for it.
• In the procedural codes, such disagreement is formalized as a separate expert opinion on the points that gave rise to the divergence — in essence, this is that expert’s dissenting view.
• The separate position is attached to the opinion and becomes part of the case file.
• The court is not obliged to automatically accept the majority view: it evaluates both the joint opinion and the separate one under the general rules for assessing evidence. Sometimes it is precisely the separate opinion that becomes grounds to doubt the main answers and to raise the question of a repeat examination.

The legal basis

The procedure for ordering commission and complex examinations is set out in the procedural codes and in the profile instruction of the Ministry of Justice:

• the Commercial Procedure Code of Ukraine (HPK) — commission and complex examinations (Arts. 104 and 105 HPK);
• the Civil Procedure Code of Ukraine (TsPK) — the corresponding rules on commission and complex examinations (Arts. 110 and 111 TsPK);
• the Code of Administrative Procedure of Ukraine (KAS) — commission and complex examinations (Arts. 106 and 107 KAS); this matters for public-law disputes, including tax disputes with the State Tax Service, which administrative courts hear;
• the Criminal Procedure Code of Ukraine (KPK) — there are no separate, detailed articles specifically on commission or complex examinations; the general grounds for conducting an examination are fixed in Art. 242 KPK, while the mechanics of panel work are detailed by the instruction;
• the Instruction on Ordering and Conducting Forensic Examinations and Expert Studies, approved by order of the Ministry of Justice (No. 53/5), which is what distinguishes the types by expert composition and describes the mechanics of signing the opinion and the separate opinion;
• the general principles of an expert’s activity are defined by the Law of Ukraine “On Forensic Examination.”

The party commissioning an economic examination varies by type of proceeding: in criminal proceedings over economic crimes it is, as a rule, detectives of the Bureau of Economic Security (BEB); in tax disputes it is the parties to the dispute with the State Tax Service (DPS); and some questions may rest on materials from the State Financial Monitoring Service (Derzhfinmonitoring). Whoever initiates it, the procedure for ordering a commission or complex examination is the same — it is governed by the procedural code and Instruction No. 53/5.

If you are unsure of the exact article number for your type of proceeding, it is safer to cite it descriptively in the motion — “on the basis of the procedural code’s provisions on ordering a commission (complex) examination” — and to focus on justifying the grounds, because that is what the court evaluates.

Forming the panel and dividing the questions

In practice, the process looks like this:

1. Ordering. The court (by ruling) or the investigator or prosecutor (by resolution) states that a commission or complex examination is being ordered and sets out the list of questions.
2. Assigning it to an institution. The head of the expert institution designates the specific experts of the required specialties and may appoint a presiding (lead) expert to organize the panel’s work. Importantly, this organizational role gives no advantage in evaluation — all experts are equal in their conclusions.
3. Dividing the questions. In a complex examination the questions are divided by field: each expert takes those within their competence. In a commission examination, everyone works on the same body of documents.
4. Research and synthesis. Each conducts their part, followed by joint discussion and formulation of the final answers.
5. Documenting. The agreed answers are signed by the experts who concur; in case of disagreement, a separate opinion is attached.

What to watch when framing questions: do not put a question from another field to a specialist (accounting to the appraiser, construction volumes to the economist), and do not include questions of a legal nature — legal qualification (“was there an embezzlement,” “is there a corpus delicti”) is for the court, not the expert.

How this differs from several separate examinations

Parties sometimes think that “ordering three examinations” is the same as a complex one. It is not.

• Several separate examinations are several independent studies. Each expert answers only their own questions, and no one is obliged to synthesize the results. Hence the risk of receiving formally correct but mutually contradictory conclusions, more procedural documents and, as a rule, a longer road.
• A complex examination is one procedural act, a joint study and a single agreed opinion in which the results of different fields are brought together. The synthesis is the main value: it gives the court a coherent answer rather than a set of fragments.

When are separate examinations appropriate? When the subjects do not overlap and no synthesis is needed — for example, a standalone economic question and a standalone handwriting study of entirely different objects. But if the answer to one question depends on the answer to another, that is a signal in favor of a complex examination.

Common mistakes

In my expert practice, the most frequent are these:

• Requesting a “complex” examination where separate ones are needed (the questions do not overlap) — and, conversely, ordering several separate examinations where synthesis is mandatory, and ending up with contradictory conclusions.
• Confusing a commission examination with a repeat one. These are different axes: commission is about expert composition, repeat is about doubt over the correctness of a prior opinion. A single examination can be both repeat and commission at once.
• Putting a question from another field to an expert — and receiving a refusal “beyond the scope of competence.”
• Including legal questions — an expert does not qualify an act.
• Ignoring the separate opinion — not attaching it to the file or not drawing the court’s attention to it, even though it is sometimes the key to revising the conclusion.

In brief

A commission examination adds hands of one specialty for large and complex cases; a complex examination gathers different fields at one table for a shared answer. Both produce a single agreed opinion in which each expert signs their own part, and a dissenting expert has the right to a separate opinion. This is fundamentally different from several separate examinations, where there is no synthesis and the conclusions may contradict one another.

If you are unsure which format your case needs — a panel of economists, a complex study with an appraiser, or separate examinations altogether — it is worth agreeing on the composition and the questions before filing the motion. The right type and correctly framed questions save time, money, and the very prospects of the case.