Skip to content

Legal assessment of horizontal and vertical cooperation under the Public Procurement Act

In-depth analysis of conditions and risks

Horizontal and vertical cooperation allows public contracting authorities, under precisely defined conditions, to secure performance without a standard procurement procedure. The in-house model is based on the actual control of the controlled entity, while horizontal cooperation is based on a common public objective and the real involvement of the partners. This article explains when these exemptions can be used and how to prevent contract invalidity or sanctions.

An attorney providing advisory services in the area of horizontal and vertical cooperation under the Public Procurement Act.

Key takeaways

Save time and money by meeting the statutory exceptions to procurement procedures. The Public Procurement Act (PPA) allows contracting authorities to award contracts without a standard procedure through vertical (in-house) or horizontal cooperation.
Award a contract in-house if you control the supplier as you would your own department. Vertical cooperation, governed by Section 11 of the PPA, allows a contract to be awarded directly to a legal entity controlled by the contracting authority, provided that three strict conditions based on the Teckal case law are cumulatively met.
Join forces with other contracting authorities through horizontal cooperation. This type of cooperation operates on a partnership basis, where two or more independent contracting authorities combine their efforts to achieve a common objective without one controlling the other.
Misapplication of these exceptions can result in invalid contracts and penalties. An incorrect assessment or underestimation of the conditions for applying these exceptions can lead to severe consequences, such as the invalidity of contracts and substantial fines from the Office for the Protection of Competition (ÚOHS).
ARROWS law firm

Public Sector Cooperation: When Can You Skip a Procurement Procedure?

These mechanisms represent legal exemptions that, under precisely defined conditions, allow public contracting authorities to conclude contracts for supplies, services, or construction work without the need to conduct a standard procurement procedure.

It is crucial to understand that these are not legal loopholes, but fully-fledged legal instruments that codify practices verified by European legislation and case law. Vertical cooperation, also known as in-house awarding, is based on a hierarchical principle where the contracting authority awards a contract to an entity it directly controls. Horizontal cooperation, on the other hand, operates on a partnership basis, where two or more independent contracting authorities join forces to achieve a common goal.

Although the main objective of the law is to ensure the widest possible economic competition, the legislator has recognised that forcing public entities to compete for services they can effectively provide internally or in mutual synergy is uneconomical and administratively demanding. It is at this point that a key tension arises between the principle of transparency and the need for efficiency.

However, the correct assessment and setup of these models are critically important. Our Prague-based lawyers at ARROWS daily encounter cases where even a minor inaccuracy in interpreting the law or underestimating one of the conditions has led to fatal consequences in the form of invalid contracts and high penalties from the Office for the Protection of Competition (ÚOHS).

Vertical Cooperation (In-House): Do You Manage the Supplier Like Your Own Department?

Vertical cooperation, or the in-house exemption, is defined in Section 11 of the Public Procurement Act (PPA). It allows a public contracting authority (such as a city, region, or ministry) to award a public contract directly to a legal entity (typically a municipal company or state-owned enterprise) that it controls. For this procedure to be legal, three strict conditions, originating from the landmark judgment of the Court of Justice of the EU in the Teckal case, must be met cumulatively, i.e., simultaneously.

The Control Condition: What Does Control "Like Over Its Own Departments" Mean?

The first and most important condition is that the contracting authority controls the supplier in a manner similar to its own internal organisational units. This is not just about owning 100% of the shares or stakes. Case law and methodological guidelines emphasise that the contracting authority must have a decisive influence on the strategic objectives and significant decisions of the controlled person. In practice, this means the ability to appoint and dismiss statutory bodies, approve the strategic plan, budget, and key investments.

The No Private Capital Condition: Zero Tolerance

The second condition is categorical: there must be no direct capital participation of a private person in the controlled legal entity. Even a single share held by a private entity automatically disqualifies the use of the in-house exemption. The aim of this rule is to ensure that all activities of the controlled entity are directed exclusively towards fulfilling public interests, not generating profit for private investors.

DO YOU NEED LEGAL HELP?

Get in touch — we're happy to help.

ARROWS law firm

The Activity Share Condition: More Than 80% for the Contracting Authority

The third condition requires that more than 80% of the total activity of the controlled person is carried out in the performance of tasks entrusted to it by the controlling contracting authority (or multiple authorities if they control it jointly). According to Section 13 of the PPA, this share is calculated as an average over the last three accounting periods. If the company was established more recently, it is sufficient if compliance with this condition is plausible, for example, based on business plans.

The key concept here is 'entrusted task'. It cannot be any commercial activity. It must be activities related to the fulfilment of the public law duties and objectives of the contracting authority itself, such as ensuring waste collection, operating public transport, or managing municipal property.

A recent amendment to the PPA, effective from 16 July 2023, redefines the Czech Republic as a single public contracting authority and its ministries and other organisational units of the state (OSS) as its 'operational units', fundamentally changing the rules of the game at the state level.

While it was previously difficult for a state-owned enterprise established by one ministry to provide services to another ministry under the in-house regime, the new regulation theoretically opens the door for broad inter-ministerial cooperation. However, this creates a new legal situation, not yet tested by case law, full of interpretative ambiguities, especially regarding who exactly exercises the decisive control on behalf of the 'state'.

Assessing whether your organisation truly exercises 'similar control' or whether a subsidiary's activity correctly meets the definition of an 'entrusted task' is a frequent subject of disputes. The lawyers at ARROWS will prepare a detailed legal opinion for you, which, based on an in-depth analysis, minimises the risk of being challenged by the ÚOHS.

Risks and Penalties

How ARROWS Helps

Incorrect assessment of "control": The ÚOHS finds that the contracting authority's influence is not sufficiently "decisive". The contract may be invalidated, with a risk of a fine of up to 10% of the contract price and an obligation to return the performance.

We will prepare a legal opinion that analyses the degree of control in detail and confirms compliance with the conditions according to the case law of the CJEU (the so-called Teckal test).

Incorrect calculation of the 80% activity share: The incorrect inclusion of commercial activities in the calculation can lead to a retroactive review by the ÚOHS, invalidity of the contract, and financial corrections (e.g., for subsidies).

We will conduct an audit of activities and assist with the preparation of documents (e.g., activity plans according to Section 13 of the PPA) that will securely demonstrate compliance with the legal limit.

Hidden private capital participation: Even indirect or minority participation of a private person in the controlled structure leads to the absolute invalidity of the in-house regime.

We will provide comprehensive due diligence of the ownership structure and prepare internal directives to prevent future (even unintentional) entry of private capital.

Unauthorised use of "sister" cooperation: Cooperation between two companies controlled by the same contracting authority (Section 11(4) of the PPA) has specific rules, the omission of which constitutes a breach of the law.

We will structure and contractually secure sister cooperation to be fully in compliance with the law and the current methodological recommendations of the Ministry of Regional Development (MMR).

Circumvention of the law via subcontractors: The controlled person plays only a formal role and subcontracts most of the contract to external parties without competition. The ÚOHS penalises this as a circumvention of the law.

We will prepare contractual documentation and internal processes for the legal selection of subcontractors and train your employees.

Ambiguities in inter-ministerial state cooperation: Following the PPA amendment, there are risks in defining the controlling entity and setting up relationships between state administration bodies (OSS) and state-owned enterprises.

We provide strategic advice to ministries and state organisations on the safe implementation of new models of this cooperation.

Cross-border in-house awarding in the EU: Cooperation with an entity controlled from another Member State encounters a complex conflict between local legal systems and the European directive.

Through our international network, ARROWS International, we will ensure the assessment and coordination of the project in accordance with both EU law and local laws.

ARROWS law firm

Frequently Asked Questions about Vertical (In-House) Cooperation

1. How exactly is the mandatory 80% activity share for the in-house exemption calculated?

The share is calculated as the average turnover or volume of activity of the controlled company over the last three accounting periods (Section 13 of the PPA). The 80% includes exclusively tasks entrusted to the company by its controlling contracting authority (or authorities) as part of fulfilling their public law duties.

2. Can a controlled municipal company have even a single private shareholder?

  • Absolutely not. The second legal condition establishes zero tolerance for private capital. Any direct capital participation by a private entity in the controlled legal entity immediately invalidates the in-house exemption.

3. What has changed regarding in-house awarding between state bodies and corporate units?

  1. The amendment to the PPA defines the Czech Republic as a single public contracting authority and its organisational units of the state (OSS) as its operational units. This theoretically simplifies inter-ministerial in-house cooperation and the use of state-owned enterprises across ministries, but it requires precise documentation of decisive control.

ARROWS law firm

Horizontal Cooperation: A Partnership of Equal Entities in the Public Interest

An alternative to the hierarchical in-house model is horizontal cooperation, regulated in Section 12 of the PPA. This involves a partnership between two or more independent public contracting authorities who decide to combine their resources and capacities to jointly provide a public service. This model, based on the CJEU's case law in Commission v. Germany (the so-called Hamburg case), is not based on control but on genuine cooperation. Here too, however, three cumulative conditions must be met.

Cooperation Towards a Common Goal

The contract must establish or implement genuine cooperation for the purpose of achieving common objectives related to their public duties. It must not be a disguised form of service purchase, where one contracting authority merely pays another for performance. It must be demonstrable that all participating partners contribute to the task, whether by providing equipment, personnel, know-how, or other resources.

Our specialists will help you

Mgr. Antonín Hajdušek, LL.M.

Mgr. Antonín Hajdušek, LL.M.

advokát

hajdusek@arws.cz
Mgr. Alexandra Johnová

Mgr. Alexandra Johnová

advokátní koncipientka

johnova@arws.cz
ARROWS law firm

Governed Solely by Public Interest

All activities within the cooperation must be governed exclusively by considerations related to the public interest. Any commercial character or attempt by one partner to profit at the expense of another is excluded. Remuneration for mutually provided performances should only cover actual and justified costs.

Market Activity Limit: Less Than 20%

Each of the participating contracting authorities must perform less than 20% of its activities covered by the cooperation on the open market. This is a crucial and often misunderstood difference compared to vertical cooperation. 

While the in-house test looks at more than 80% of the controlled company's total turnover, here the 20% limit applies only to the relevant segment of activity. Thus, if two municipalities cooperate on waste collection, the 20% limit is calculated only from their activities in the waste management sector provided to third parties, not from their total budgets.

The line between genuine 'cooperation' and a disguised 'public contract' is thin, and crossing it has fatal consequences. The lawyers at ARROWS specialise in drafting contracts that clearly define the common goal, cooperation mechanisms, and mutual contributions of all parties, ensuring the entire structure can withstand even the strictest scrutiny.

Vertical vs. Horizontal: Which Model to Choose and Avoid Mistakes?

The choice between the vertical and horizontal models depends on the specific situation, goals, and structure of the participating entities. A wrong decision at the beginning of a project can lead to its complete failure. Here is an overview of the key differences to help you navigate:

  • Relationship of Entities:

  • Vertical: A hierarchical relationship (controlling and controlled). Ideal for contracting authorities (city, region, state) who want to procure services through companies they own (technical services, transport company, state-owned enterprise).

  • Horizontal: A partnership relationship of equal entities. Suitable for cooperation between municipalities on a joint project (e.g., shared IT centre, joint energy purchasing, regional waste management).

  • Private Capital Participation:

  • Vertical: Strictly prohibited in the controlled person.

  • Horizontal: Possible if the entity with private participation is itself a public contracting authority under Section 4(1)(e) of the PPA. However, this aspect increases the risk of scrutiny.

  • Calculation of Activity Share:

  • Vertical: The controlled person must perform more than 80% of its total activity for the controlling contracting authority.

  • Horizontal: Each partner must perform less than 20% of the activities covered by the cooperation on the open market.

Choosing the wrong cooperation model is one of the most common and costly mistakes. Let our experts at ARROWS advise you on which model is not only legally safe but also strategically the most advantageous for your specific project.

DO YOU NEED LEGAL HELP?

Get in touch — we're happy to help.

ARROWS law firm

Consequences of Incorrect Procedure: Invalidity of Contracts, Fines, and Criminal Liability

Underestimating the strict conditions for vertical or horizontal cooperation is not just an administrative error. The consequences can be devastating for the organisation and its responsible persons. The ÚOHS has extensive powers in these cases and acts very strictly, as it considers the unauthorised use of an exemption to be a circumvention of the law and a distortion of economic competition.

If misconduct is found, the ÚOHS can prohibit the performance of an already concluded contract, which in practice means its immediate termination. Furthermore, there is a risk of financial penalties of up to 10% of the contract price. Given the value of public contracts, these fines can easily run into millions or tens of millions of crowns.

The most serious risk, however, is personal criminal liability. Conduct that meets the criteria of unlawfully favouring a particular supplier can be classified as a criminal offence. 

Specifically, this refers to arranging an advantage in the award of a public contract (Section 256 of the Criminal Code) or collusion in the award of a public contract (Section 257 of the Criminal Code). In such cases, criminal prosecution is a risk not only for statutory bodies but for all persons involved in the decision-making process.

Our lawyers will not only guide you through the process of setting up the cooperation but, in the event of an inspection, will effectively represent you in proceedings before the ÚOHS and subsequently before the administrative courts. Our experience from dozens of such proceedings is a key advantage and protection for our clients.

ARROWS: Your Partner for Effective and Secure Cooperation in the Public Sector

Vertical and horizontal cooperation are valuable and effective tools for implementing public projects. However, their legal complexity and strict conditions require top-tier legal advice to prevent their advantages from turning into a nightmare of penalties and criminal prosecution. At ARROWS, we have long-standing and profound experience with this issue.

Whether you need a legal opinion to assess compliance with conditions, the preparation or revision of cooperation agreements, the drafting of internal procurement directives, or representation before administrative authorities, our team is fully at your disposal. We provide expert training, including certification, for your employees and management, teaching them to recognise risks and correctly apply the law in practice.

Our services are used by more than 150 joint-stock companies, 250 limited liability companies (s.r.o.), and 51 municipalities and regions, who rely on our speed, precision, and deep knowledge of the subject matter. Thanks to our international network, ARROWS International, we can also effectively handle cross-border projects with a European element. 

But we are not just lawyers. Thanks to our extensive client network, we can connect you with interesting business or investment partners. We are also happy to listen to your business ideas.

Are you planning a project and considering using vertical or horizontal cooperation? Don't take risks. Contact us and arrange a no-obligation consultation. Together, we will find the best and safest solution for you.

Frequently Asked Questions about Cooperation of Public Contracting Authorities without Competition

1. What is the main difference between vertical (in-house) and horizontal cooperation?

  • Vertical cooperation works on the principle of subordination (the contracting authority directly controls its supplier like its own department). Horizontal cooperation is an equal partnership of independent contracting authorities who join forces and resources to ensure a common public task.

2. How does the calculation of the market activity limit differ between the two models?

  • For the in-house exemption, the total turnover of the controlled company is assessed (it must perform more than 80% of its activity for the contracting authority). For horizontal cooperation, the 20% limit applies only to the specific market segment and activities that are the subject of the cooperation.

3. What penalties can the ÚOHS impose for unlawfully omitting a procurement procedure?

  • The ÚOHS can prohibit the performance of the concluded contract, impose a fine of up to 10% of the total contract price, and order the return of the performance or subsidies provided. In addition, persons involved in the decision face the risk of criminal prosecution for arranging an advantage or collusion in a public contract.

4. Can a controlled in-house company subcontract the performance of the contract to external subcontractors?

  • An in-house company cannot serve as a mere shell company. If it were to subcontract the majority of the contract to private subcontractors without competition, the ÚOHS would consider this an illegal circumvention of the Public Procurement Act.

5. Can horizontal cooperation be profitable for one of the participating contracting authorities?

  • No. Horizontal cooperation must be governed purely by the public interest. Financial settlement between partners may only cover actual and justified costs incurred, not generate commercial profit.

6. What is so-called "sister" in-house cooperation under Section 11(4) of the PPA?

This is a situation where one controlled legal entity awards a contract to another controlled legal entity, where both have the same controlling contracting authority (e.g., a contract between two subsidiaries of the same city). This cooperation is also subject to strict legal conditions.

DO YOU HAVE MORE QUESTIONS? GET IN TOUCH

ARROWS law firm

About the author

JUDr. Jakub Dohnal, Ph.D., LL.M.
JUDr. Jakub Dohnal, Ph.D., LL.M.

Associate, managing partner

Jakub Dohnal is a solicitor and managing partner at ARROWS. He specialises in company sales, investor equity investments and property transactions — most often representing the owner who is selling a company whose value they have built up over many years and who needs the transaction to be completed on the agreed terms.

Disclaimer:

The information contained in this article is for general informational purposes only and serves as a basic guide to the issue as of 2026. Although we strive for maximum accuracy, laws and their interpretation evolve over time. We are ARROWS Law Firm, a member of the Czech Bar Association (our supervisory authority), and for the maximum security of our clients, we are insured for professional liability with a limit of CZK 350,000,000. To verify the current wording of the regulations and their application to your specific situation, it is necessary to contact ARROWS Law Firm directly (consultation@arws.cz). We are not liable for any damages arising from the independent use of the information in this article without prior individual legal consultation.