Deferment from mobilization: grounds and eligibility

Deferment from mobilization in Ukraine in 2026 is neither a formality nor an “oral agreement” with the TCC, but a right clearly defined by law that must be properly confirmed. Many people mistakenly believe it is enough to simply have a certain life circumstance: three children, studies, health issues, or caring for a relative. In fact, that is not enough. It is important that the ground is directly provided for by law, properly supported by documents, and processed through the established procedure.

In 2026, the procedure has become significantly more digital. For a large portion of grounds, an application can be submitted via Reserve+, and in other cases — through a CNAP. That is why today it is critical not only to know who is entitled to a deferment, but also to understand how exactly this right is implemented in practice.

What a mobilization deferment is and who can receive it

A mobilization deferment is a legal ground under which a person liable for military service is temporarily not subject to conscription for military service during mobilization. It is important to understand that this is not the same as unfitness for military service or “booking” (reservation). Unfitness is connected to medical status and a MMC decision. Booking is connected to employment at a critically important enterprise or in a state body. A deferment is a broader legal concept that includes various grounds provided by law.

The right to a deferment is regulated primarily by Article 23 of the Law of Ukraine “On Mobilization Preparation and Mobilization”. It defines the categories of persons who are not subject to conscription during mobilization. In addition, the procedure is detailed by the conscription procedure approved by Cabinet of Ministers Resolution No. 560, as well as subsequent amendments that introduced submission of applications via Reserve+ and CNAP.

One of the main mistakes is thinking that the right to a deferment applies automatically. In practice, automatic extension is possible only for some already-issued deferments that are confirmed by state registers. In most cases, proper confirmation of the ground remains key. If documents are not submitted, the category is chosen incorrectly, or information is absent from registers, the life situation itself does not guarantee protection from conscription.

What grounds for mobilization deferment are provided by law

Main groups of grounds

Grounds for a deferment can conditionally be divided into several broad groups: health-related, family circumstances, studies and scientific/teaching activity, booking, and certain special grounds. These include persons with disabilities, persons temporarily unfit per a MMC conclusion, parents of three or more children, single parents, persons who care for relatives, students, PhD candidates, certain education workers, and booked employees of critically important enterprises.

Why it is important to correctly identify your category

In practice, it is not enough to know “in general” that a deferment is possible. It is important to precisely determine which paragraph of the law you rely on. For example, caring for a relative, having a relative with a disability, and being a legal guardian are not the same ground. Likewise, studying does not always entitle a person to a deferment: the form of study, the level of education, and other conditions matter. If a person chooses the wrong category, they collect the wrong documents and effectively create the risk of refusal themselves.

Which grounds most often become the subject of disputes

Disputes most often arise regarding family grounds, permanent care, single-handed child upbringing, completeness of medical documents, and educational grounds. Another problematic area is booking: a person may work at an important enterprise, but that does not mean they are booked in the established manner. That is why any ground must be checked not “in everyday terms” but legally.

Deferment from mobilization due to health

Persons with disabilities

Persons with disabilities have the right to a deferment. But it is important to understand: the key factor is not simply the presence of an illness, but an established status confirmed by proper documents and, where possible, reflected in registers. If documents are not up to date, there are discrepancies in data, or information did not pull into the system, a separate submission or clarification may be needed.

Temporary unfitness based on a MMC conclusion

A separate ground is temporary unfitness for military service based on a MMC conclusion. The key point here is that the deferment is granted not by any medical certificate, but specifically by a decision of the military medical commission. If such a decision is entered into the electronic system, this ground can also be processed via Reserve+. A diagnosis itself does not always mean entitlement to a deferment — which is clearly illustrated by the example of hypertension and fitness for military service.

For what period a health-related deferment may be granted

A deferment due to temporary unfitness is granted for the period determined by the MMC results. In practice, this is a temporary period followed by a repeat examination. This means such a deferment is not indefinite: after the period ends or as indicated by the MMC, the question of fitness is reviewed again.

When appealing a MMC conclusion is needed

Appealing a MMC conclusion is needed when the medical conclusion does not correspond to the actual health condition, does not take into account the provided documents, or when a person is found fit despite objective medical grounds. In such situations, the problem is not only the deferment itself, but the medical basis on which the fitness decision is built.

Deferment from mobilization due to family circumstances

Parents of three or more children under 18

Parents of three or more children under 18 are among the most common categories entitled to a deferment. In 2026, this ground was additionally simplified in terms of digital processing: the Ministry of Defense reported the launch of an automated mechanism in Reserve+ for parents of multiple children. But even here, correct data in registers and confirmation of family status are important.

Single father or mother

Women and men who raise a child under 18 on their own may also be entitled to a deferment. This is one of the grounds where difficulties arise most often. Actual separate residence or lack of participation by the other parent does not always mean the evidence is sufficient. Here it is critical to have exactly the documents that confirm a legally significant status of single-handed upbringing.

Parents of a child with a disability

A separate ground is having a child with a disability under 18, or an adult child with a disability of Group I or II. Such grounds are directly provided in the list of available categories for processing. However, it is also important not to confuse the child’s medical status with the full legal set of documents that must be submitted or that must be pulled from registers.

Caring for a person with a disability or a person who needs permanent care

The “care” category is one of the most complex. That is why in such cases it is important to take care in advance of proper documentation, in particular if it concerns arranging care for a person with Group 2 disability. It is not enough to simply say that you help a relative or live with them. You must prove not only the family relationship and the person’s health condition, but also the fact that permanent care is necessary and justify why you are the person who provides it. Precisely because of incomplete or incorrectly selected documents, refusals most often occur in this category.

When arranging a deferment on family grounds, you must document all elements of the rule: kinship, children’s age, disability status, single-handed upbringing, care, marital status, and sometimes the absence of other persons who can perform the relevant duties. The most common mistakes are an incomplete document package, the wrong ground, or trying to prove a complex family situation only with general certificates.

Who is entitled to a deferment due to studies, scientific, or teaching activity

Students, PhD candidates, and certain categories of scientific and teaching staff may be entitled to a deferment. But here, too, it is not a general rule “if I study — then I have a deferment”, but specific criteria. For students, the form of study and compliance with the established requirements are important. For PhD candidates, this ground is also directly provided among the available categories.

As for scientific and teaching staff, it is important to consider that the right is linked not merely to the fact of teaching, but to employment conditions, including the main place of work and the required workload. In practice, this is where mistakes often happen: a person actually works in education, but the legal criteria are not met, so the ground is not confirmed.

Deferment through booking and employment in critically important sectors

Booking is a separate ground for a deferment, but it differs significantly from family or medical grounds. A person does not arrange it solely based on their personal statement about their workplace. Booking depends on the employer’s status, its inclusion in the relevant categories, and the proper processing of the employee in the established manner. In other words, working in an important sector does not automatically mean being booked.

That is why you should not confuse a deferment and booking. A deferment is a general legal construct. Booking is only one of the mechanisms that grants a right to a deferment. If booking is not arranged, then referencing the workplace itself does not create protection from mobilization.

Other grounds for mobilization deferment

Persons released from captivity

Special categories include, in particular, persons released from captivity. The law establishes separate guarantees for this category. In such cases, it is important to rely on the current version of Article 23, since amendments were made to it in 2026.

Certain family and special categories

There are also other grounds related to guardianship, custody, certain family circumstances, or special status directly provided by law. In these categories, it is especially dangerous to rely on retellings or general lists from the internet, because even a small difference in wording may mean a completely different legal situation.

Other cases provided by law

The list of grounds should always be checked against the current version of the law. If the situation is atypical or doubtful, you should rely on the text of Article 23 and the current procedure, not advice “by analogy”.

How to arrange a mobilization deferment

You should start by precisely identifying your ground. Only after that should you collect documents. In 2026, the basic approach is this: if the category is available for digital processing, the submission is done via Reserve+; if not — via CNAP. As of 1 November 2025, this procedure became the primary one.

Next, you must prepare a set of documents. The application must include the person’s identification and contact details, as well as attachments confirming the relevant ground. If documents are submitted through CNAP, the administrator accepts and scans them, while the decision is made by the relevant TCC and SP. If the ground is arranged through Reserve+, the system may pull data from state registers automatically. At the same time, it is important not to confuse arranging a deferment via a digital service with the military registration status in the app — in particular, when it concerns the status “not liable for military service” in Reserve+.

Through which channels a deferment can be arranged today

Reserve+ already offers a number of grounds, including disability, temporary unfitness where an electronic MMC decision exists, certain family grounds, student categories, PhD candidates, and workers in higher and vocational education. For some categories the process is automated and takes from a few minutes to a few hours.

If the ground has not been digitized, if a person does not use the app, or if the system cannot verify the entitlement via registers, submission is possible through CNAP. This is an extraterritorial service, meaning it is not mandatory to apply only at the place of registration.

After submission, you must make sure that the result is reflected in the military registration document or in the electronic document in Reserve+. If the decision is not displayed, the data did not pull, or the application was not actually reviewed, the situation must be clarified immediately, without waiting for a summons or other procedural risks.

What documents are needed to obtain a mobilization deferral

As a baseline, you need an application, an identity document, taxpayer ID (RNOKPP) details or passport details, contact information, and documents confirming the specific legal ground. For family-based grounds, this may include children’s birth certificates, court decisions, documents confirming marriage or divorce, disability certificates, guardianship or caregiving documents. For medical grounds — disability-related documents or a MMC decision. For education or employment — documents from an educational institution or an employer confirming exactly the circumstances required by law.

In complex cases, additional acts, expert opinions, court decisions, or other documents may be required; without them, it may be impossible to prove all elements of the ground. This is especially relevant for caregiving, single parenting of a child, or situations where there is a gap between the factual circumstances and the formal legal documents.

What to do if your deferral is refused

Typical reasons for refusal include an incorrectly chosen ground, an incomplete document package, lack of confirmation in registries, data errors, non-compliance with formal criteria, or confusion between a deferral, booking (reservation), and medical status. Often, the problem is not that the person has no right at all, but that it was properly formalized incorrectly.

If documents are not accepted, not registered, or are effectively ignored, you need to document the fact of submission: keep confirmation of submission in Reserve+, scans of documents, application numbers, electronic notifications, and other evidence. In a digital procedure, this is especially important because it allows you to prove that the person acted properly.

It is worth contacting a military lawyer when the refusal is related to a disputed family-based ground, an appeal of a MMC decision, caregiving, missing data in the registry, or an obviously unlawful refusal despite a complete set of documents. If the issue is a medical decision, you often need to work separately specifically on appealing the MMC conclusion.

Common mistakes when applying for a deferral

When applying for a deferral, many refusals happen not because the person has no right as such, but because of mistakes in the ground, documents, or method of submission. Most often, problems arise in the following cases:

• Incorrectly identifying the legal ground. A person relies on a general description of their situation rather than a specific legal provision, and therefore submits the wrong documents.
• Incomplete document package. Even if the ground exists, the absence of one supporting document may become a reason for refusal.
• Assuming the status will “pull through” automatically. Automatic extension or confirmation does not always work, so some grounds must be properly formalized and checked separately.
• Confusion between a deferral, booking (reservation), and unfitness. These are different legal mechanisms; it is also important not to mix medical statuses, in particular “limited fitness” and “temporary unfitness”.

Conclusion

A mobilization deferral is not a general “life privilege” but a specific right that must be properly formalized. In 2026, three things are key: accurately identifying your ground, having a proper set of documents, and using the correct submission channel via Reserve+ or a CNAP. If you act formally correctly from the very beginning, the chances of issues, refusal, or the need for a dispute are much lower; and if there are doubts about the ground or documents, it is worth getting legal advice in advance.

FAQ

Who is entitled to a mobilization deferral in Ukraine?

The right belongs to categories directly defined by Article 23 of the Law — in particular persons with disabilities, those temporarily unfit according to a MMC conclusion, certain persons with family-based grounds, students, postgraduate (PhD) students, some education workers, and reserved employees.

For what period is a deferral granted based on a MMC conclusion?

It is granted for the period determined by the MMC decision, with a subsequent repeat examination in cases established by procedure.

Does single parenting of a child give the right to a deferral?

Yes, but only with proper documentary confirmation of single parenting of a child under 18.

How does a deferral differ from booking (reservation)?

A deferral is a general legal concept, while booking (reservation) is only one of the grounds for it, linked to the status of the employer and the employee.

What to do if a deferral is refused?

You need to verify the ground, the document package, the fact of submission, and the reason for refusal.

Can a refusal to grant a deferral be appealed?

Yes. Both unlawful refusals and related actions/inaction can be appealed, and in medical disputes — MMC conclusions as well.

Do you need to reconfirm a deferral?

Not always. For some categories, automatic extension applies, but if the ground is not confirmed via registries or the data is incomplete, resubmission may be required.