Contractor vs Employee in 2026: Avoiding Tax Risks in Czechia

27.3.2026 | ARROWS law firm

The difference between an external contractor and an employee is not merely a legal formality, but an issue with a financial impact in the millions of Czech crowns. If you plan to build your business around outsourcing or long-term cooperation with external specialists, you need to know when this setup carries the risk of the “švarcsystém” (bogus self-employment) under Czech law. This article will show you how to distinguish these relationships correctly under the legislation applicable in 2026 and how to avoid mistakes that lead to severe fines.

In the image, we see a lawyer addressing the issue of the “švarcsystém” (bogus self-employment).

What distinguishes a contractor from an employee: the legal reality
When it constitutes disguised employment and what it means for you
How to structure contractual relationships with genuine contractors without risk
Tax and social security contribution aspects
What the legal alternatives are

Key takeaways

A formal contract is not enough: Even if you sign a commercial contract that shows the characteristics of dependent work, there is a risk of reclassification as disguised employment, with cascading financial consequences.
The Labour Inspectorate, the Czech Social Security Administration (ČSSZ) and the tax authority look at the reality: Authorities (in particular the State Labour Inspection Office – SÚIP) distinguish a worker from a contractor based on actual subordination, personal performance of work, and integration into the company’s structure.
Disguised employment costs money: The fine for enabling illegal work can reach up to CZK 10 million, plus additional assessments of taxes and insurance contributions, including penalties.
Proper setup is achievable: If you understand where the boundary under the Czech Labour Code lies and what terms can be agreed, you can legitimately work with external contractors without legal risk.

What distinguishes a contractor from an employee: the legal reality

It may seem simple: you sign a contract for work or a mandate agreement with a contractor and that’s it. In practice, however, it is more complicated. Public authorities do not focus only on the title of the contract, but look for the factual characteristics of so-called dependent work.

Under the Czech Labour Code and established case law of the Supreme Administrative Court, the decisive factors are:

Personal subordination: Does the client decide on the time, place and manner of work and issue binding instructions, or does the contractor manage the work independently?
Personal performance of work: Must the work be performed by a specific individual, or can the contractor appoint a substitute?
Performance of work in the employer’s name: Does the person present themselves externally as part of your company, or do they act in their own name?
Material and social background: Who provides equipment, training and benefits?
Remuneration: Is the remuneration fixed based on time, or based on the result?
Organisational integration: Is the person integrated into your company (do they have a permanent workstation, are they in the attendance system)?

SÚIP inspectors examine precisely these characteristics during inspections, and if you have a “contractor” in your company who sits in the office with other employees and uses your hardware, there is a high risk that the inspectorate will conclude that there is a concealed employment relationship.

When it constitutes disguised employment and what it means for you

Disguised employment, i.e. the so-called švarcsystém, is a form of illegal work under the Czech Employment Act. If the Labour Inspectorate, the Czech Social Security Administration (ČSSZ) or the tax authority proves that you in fact employed an individual as a self-employed person (IČO), the consequences are severe.

The fine for enabling illegal work can reach up to CZK 10 million for a legal entity, and a fine may also be imposed on the “employee” themselves.

ČSSZ and the health insurance company will assess outstanding insurance contributions that should have been paid by both the employer and the employee, retroactively. In addition, penalties accrue, which can grow to enormous amounts over several years—so in practice you will pay the contributions you tried to save, plus a sanction.

The tax authority will not recognise invoices from a self-employed person as a tax-deductible expense because it was a disguised arrangement, and will assess additional corporate income tax as well as wage tax.

The fine is also recorded in the register, which creates reputational risk and the possibility of exclusion from public tenders. Banks may tighten your company’s lending terms due to such records.

Specific typical situations: where mistakes are most common

Situation 1: Accountant/Administration on an IČO

A company hires a person on invoices who handles administration 5 days a week, 8 hours a day, in the company’s office, on a company PC. In practice, they follow the managing director’s instructions. Authorities classify this as disguised employment without hesitation. Fines in such cases range from hundreds of thousands to millions of Czech crowns.

Situation 2: IT specialist (“body-shopping”)

A company hires a developer who physically works within the client’s team, attends daily stand-ups and reports to the client’s team leader, which is a highly risky model. If they have no autonomy and merely “rent out” their labour without being covered by a temporary employment agency, this is a high-risk situation.

Situation 3: Independent advisor with a long-term mandate

A consultant works for a client but has their own office and equipment, sets their own working time, invoices for deliverables and is responsible for the result. This model usually withstands scrutiny by courts and the inspectorate, provided there is no micromanagement by the client.

How to structure contractual relationships with genuine contractors without risk

If you want to cooperate legitimately with external experts, you need to set the terms so that they reflect a commercial relationship rather than employment law.

Choose the right type of contract, for example a contract for work for a specific deliverable or a mandate agreement for handling matters. An innominate commercial cooperation agreement is also possible, but it must include features of a commercial relationship, such as liability for defects or contractual penalties.

Ensure genuine independence in practice, meaning the contractor determines the time and place of performance and uses their own equipment. The contractor should bear the risk for the result, and communication should primarily be about the assignment and handover, not ongoing management.

Document the contractual relationship explicitly; the contract should include a clear definition of the deliverables and remuneration tied to the outcome or a fixed fee. Liability for damage under the Czech Civil Code is also important, as is the possibility of substitution—i.e., that the supplier may use subcontractors.

A self-employed contractor (IČO) does not log into the attendance system, does not take vacation, and is not entitled to employee benefits such as meal vouchers or Multisport cards. For inspection authorities, these benefits are a clear signal of disguised employment.

The attorneys of ARROWS, a Prague-based law firm, can help you prepare a so-called Master Service Agreement that will legally support independence.

Tax and contribution aspects

The distinction between an employee and a self-employed person (OSVČ) has a fundamental impact on labour costs. Total social security and health insurance contributions paid by the employer for an employee amount to 33.8% of the gross salary, and it is also necessary to add the costs of vacation and sick leave.

For a supplier (OSVČ), the situation is different because the supplier handles contributions themselves and you pay only the invoiced amount. If the supplier is a VAT payer, you as a company can claim a VAT deduction, which is not possible with wages.

If an authority reclassifies the relationship as employment, it will recover from you as the employer the contributions plus the portion that should have been paid by the employee, retroactively including penalties.

What are the legal alternatives

If you find that your model is risky, you have several options. The first option is part-time employment if you do not need the person full-time, which is a safe and transparent solution.

Change the conditions by abolishing mandatory attendance, taking away the company laptop, and defining the work by tasks rather than by time. This creates a genuinely external relationship (outsourcing), where you let the supplier work independently and without direct management.

Another option is agency employment, where you can use the services of a temporary employment agency that employs the worker and assigns them to you. You pay an invoice to the agency, which is more expensive, but it transfers the employment-law agenda and risks to the agency.

The attorneys of ARROWS, a Prague-based law firm, can assess your situation and propose a model that will be legal and economically sustainable.

How to proceed if an inspection is threatened or already underway

Consult the situation with an attorney immediately: If you receive a notice of the commencement of an inspection, do not provide any statements without consulting a lawyer and have the ARROWS attorneys take over representation.

Map the real state of your documentation. For a successful defence, you (and your attorney) must know exactly what is contained in contracts, invoices, and ordinary email communication. A frequent weak point is that managers unintentionally assign tasks to external contractors in emails as if they were subordinates.

In administrative proceedings, deadlines and the burden of proof matter. Properly filed objections to the inspection report can overturn the outcome of the inspection or significantly reduce the fine.

Final summary

The difference between an employee and a supplier is clearly defined by law. If you use external experts in a way that meets the characteristics of dependent work, you expose yourself to the risk of crippling fines.

A proper solution exists and lies in consistently separating commercial cooperation from an employment relationship, as well as in setting appropriate practice.

The attorneys of ARROWS, a Prague-based law firm, handle situations where companies are in the risk zone, help you set up contracts, and represent you in the event of an inspection.

ARROWS’ professional liability insurance up to CZK 400,000,000 enables us to provide maximum security to our clients when dealing with complex legal issues. Contact the ARROWS attorneys via office@arws.cz

FAQ: Most common questions on external suppliers and the Švarcsystem

1. Is a large corporation better protected from inspections than a small limited liability company (s.r.o.)?
No. The labour inspectorate carries out inspections broadly and also based on reports (often from dissatisfied “former suppliers”). For large companies, additional assessments are many times higher.

2. How far back can an authority assess additional insurance contributions?
The limitation period for insurance contributions is generally 10 years; in practice, inspections usually focus on the last 3 to 5 years.

3. Does liability insurance cover fines for the Švarcsystem?
Standard professional liability insurance usually does not apply to intentional breaches of the law (which illegal work may be) or to administrative fines.

4. Can we enter into a contract with a foreign supplier (e.g., Slovakia) to avoid Czech legislation?
If the work is performed in the Czech Republic, it is generally governed by Czech public-law regulations (employment law, occupational safety). A foreign business ID is not automatic protection from the Czech labour inspectorate if the relationship has the characteristics of dependent work in the Czech Republic.

5. What is the difference between an inspection by SÚIP and by ČSSZ?
SÚIP primarily addresses illegal work (fines). ČSSZ addresses evasion of insurance contributions (additional assessments + penalties). However, these authorities share information. Findings by SÚIP often lead to a subsequent inspection by the “social security office” and the tax authority.

Notice: The information contained in this article is of a general informational nature only and is intended to provide basic guidance on the topic based on the legal status as of 2026. Although we strive for maximum accuracy, legal regulations and their interpretation evolve over time. We are ARROWS advokátní kancelář, an entity registered with the Czech Bar Association (our supervisory authority), and for the maximum protection of our clients we are insured for professional liability with a limit of CZK 400,000,000. To verify the current wording of the regulations and their application to your specific situation, it is necessary to contact ARROWS advokátní kancelář directly (office@arws.cz). We accept no liability for any damages arising from the independent use of the information in this article without prior individual legal consultation.

Read also:

Possible issues	How ARROWS helps (office@arws.cz)
Incorrect classification of the supplier: Fine from the State Labour Inspection Office (SÚIP) up to CZK 10 million, additional assessment of contributions.	We will prepare contractual documentation defining independence.
Švarcsystem and illegal work: Retroactive assessment of taxes and insurance, potential criminal-law implications.	We represent clients in inspections by SÚIP, the Czech Social Security Administration (ČSSZ) and the Financial Administration (FÚ).
Tax non-deductibility of costs: The tax authority (FÚ) will assess additional income tax + penalties.	We work with tax advisors to defend the tax deductibility of external services.
Lengthy administrative proceedings: Capacity blockage, uncertainty.	We take over communication with the authorities and monitor deadlines.
Due diligence in the sale of a company: Risk of jeopardising the investment.	We carry out a pre-sale audit (Vendor Due Diligence).