Owner-to-Company Loans in the Czech Republic

Legal Framework: Loans, Credit, and the Tax Authority's Perspective

The first question is: what are you actually lending? The Czech Civil Code distinguishes between a *zápůjčka* (providing money with an obligation to return it) and an *úvěr* (where the borrower undertakes to return the funds with interest). In practice, transactions between an owner and their company are most often a *zápůjčka*.

For tax purposes, however, this terminology is less important. The agreed interest rate is always the crucial factor. Under the Czech Income Tax Act (ITA), an owner and their company are automatically considered related parties. They must therefore respect the arm's length principle.

During an audit, the Tax Authority asks one simple question: Does the interest rate correspond to what two completely independent entities would agree upon? If it finds no logical justification, it will adjust the interest rate to the customary level and mercilessly assess the difference for tax.

Many owners believe they can dictate any terms within their own company. The reality, however, is that for the costs to be tax-deductible, you must be able to securely prove the market logic of the interest rate; otherwise, you risk severe tax consequences. In practice, it pays to have the interest rate settings, documentation, and arguments prepared in advance from the perspective of tax law.

When Are Parties Considered Related and What Are the Tax Implications

A shareholder and their limited liability company (s.r.o.) or joint-stock company (a.s.) are automatically considered related parties under Section 23(7) of the Czech Income Tax Act. This is not a matter of opinion or agreement; it is a solid legal fact. Therefore, their financial transactions are subject to much stricter rules than ordinary business dealings. In some situations, it is also advisable to address the broader relationship settings between the shareholder and the company within the framework of corporate law, holdings, and structures.

If interest rates are agreed upon differently from the market standard, the tax administrator is authorized, and indeed obligated, to adjust the tax base. If a company provides its owner with a loan at 0.5% when the market demands 5%, the authority will impute the interest and assess the company for a fictitious profit of 4.5%.

However, the law provides one crucial exception. If a natural person (an owner who is not an entrepreneur) lends to their own company, the price can be set anywhere from zero up to the market rate. An interest-free loan from the owner is therefore completely safe for the company. But the reverse is not true.

Interest-Free Loan from a Shareholder: When It's Safe and When It's Not

A loan from the owner to the company with no interest claim is the simplest solution from a tax perspective. The owner pays no tax on any income, and the company faces no risk of an upward adjustment to its tax base. This is a completely legal and common way to provide financial relief to a company.

The condition, however, is that it must not be a disguised property benefit of another nature (such as a hidden contribution) that would replace taxable remuneration for work. The boundary between performance for a shareholder and remuneration for statutory directors is a frequent topic of audits, which is discussed in more detail in the article on concurrent roles and remuneration of statutory directors. In common practice, however, temporary assistance to a company in difficulty is fully accepted.

But beware of the opposite direction. If an owner takes money from their company without interest, it is a fatal mistake. The Tax Authority will assess the company for lost profit and tax the owner on the acquired property benefit, usually as income from dependent activities or other income.

Interest Rate from Owner to Company: When "Zero or More" Applies and When It Doesn't

Thanks to the exception, an owner (a natural person) can freely choose the interest rate, as long as it does not exceed the market ceiling. They can lend for free, for a symbolic 0.1%, or charge a standard market interest rate (e.g., 5%). All these options are safe regarding tax base adjustments.

A problem only arises if the owner agrees on an interest rate that significantly exceeds market reality. For example, 15% at a time when the standard is 5%. The Tax Authority will evaluate this excess as an artificial extraction of profits and will mercilessly strike it from the company's tax-deductible costs.

For natural persons, tax deductibility also has a crucial timing condition. Interest paid to the owner becomes a tax-deductible expense for the company only in the tax period when it is actually physically paid (Section 24(2)(zi) of the Czech Income Tax Act). Paper accounting without actual payment does not lead to a tax reduction.

When the Company Lends to the Owner: The "0 to Market Price" Rule No Longer Applies

The situation changes dramatically as soon as the company provides a loan to the owner. The exception for zero interest ceases to exist here. The interest must always be agreed at the customary market rate under Section 23(7) of the Czech Income Tax Act to prevent the untaxed extraction of cash.

If a limited liability company (s.r.o.) lends a shareholder one million crowns for a car interest-free, the Tax Authority will look at the average bank rate (e.g., 6%). It will then assess the company for the lost profit, and the company will pay standard corporate income tax on this fictitious income.

Furthermore, the owner will face a tax liability on non-monetary income. In fact, even if you correctly agree on the interest in the contract, but the owner does not pay it to the company, the company must still pay tax on it at the moment of its accounting due date.

Transfer Pricing and the Arm's Length Principle in Practice

If you want to defend your interest rate with certainty, you must rely on the rules of transfer pricing. This is a methodology for demonstrating that the relationship is set on a purely market basis. The basic question is: What rate would an unrelated bank offer in the same situation?

The easiest way is to perform a comparison. Find out the bank interest rates for business loans of the same size and maturity. If your company's interest rate falls within this common commercial range, a tax audit will most likely accept it without question.

Don't forget to consider creditworthiness and collateral. An established company will always get a better rate on the market than a new start-up. If a loan from the owner is also secured by assets, it is justifiable to lower the interest rate. Conversely, a long maturity without collateral should increase the rate.

In practice, a thorough analysis of market conditions is necessary. The lawyers and tax advisors at the Prague-based law firm ARROWS will ensure a review of transfer prices before the transaction to make sure your interest rate will stand up to an audit with certainty.

Thin Capitalization: The Hidden Limit for Tax Deductibility of Interest

Many owners are surprised by a hidden obstacle called thin capitalization. Under Czech legislation, interest on loans from related parties is tax-deductible for the company only up to a loan amount corresponding to a maximum of four times its equity.

If a company has equity of one million and the owner lends it ten million, the limit is four million. The interest on the excess six million is considered overcapitalization and becomes a non-deductible expense, on which the company will pay the full 21% corporate tax.

Careful planning is the protection against this rule. Instead of a huge direct loan, the owner can strengthen the company's equity (e.g., through a contribution outside the registered capital). This increases the capitalization limit, and the interest remains fully tax-deductible for the company.

How to Set Safe Interest Rates: Practical Benchmarks

Where exactly should you look for a starting point for the market rate? An excellent source is the two-week repo rate of the Czech National Bank (CNB). Banks typically add their margin to this rate. The repo rate plus a risk margin of a few percentage points (e.g., 2–4%) is very defensible.

Offers from banks, where commercial business loans often range from 5–12% depending on the risk, can also help. If you are part of a larger holding, the internal rates at which other companies in the group borrow can serve as a shield.

In practice, a zero rate into the company is risk-free. A rate between 3–5% is common, and 5–8% is highly defensible. However, interest rates above 10% p.a. already require a specific explanation of extreme risk. A zero interest rate from the company to the owner is a recipe for a certain tax problem.

Documentation: Contractual and Tax

Excuses that you explained everything over lunch will not stand up to a financial audit. Without written documentation, you are at a significant disadvantage. A proper contract must precisely define the parties, the loan amount, the purpose, the interest rate, the maturity period, and any penalties.

We strongly recommend having the signatures of both parties on the contract officially certified. This provides an indisputable timestamp for state authorities as to when the document was actually created. This will help you avoid the common suspicion that you printed the contract just last night for the audit.

A short accompanying memorandum is also an excellent shield. In it, you can rationally summarize the financial situation, the reasons for choosing the given rate, and refer to a market analysis. This demonstrates your professionalism to the official and nips most doubts in the bud.

If you don't want to risk tax reassessments and penalties, entrust the preparation of contracts to experts. The lawyers at the Prague-based law firm ARROWS specialize in intra-company financing and its tax aspects and will guide you safely through the entire process.

Withholding Tax: An Important Detail When Working with Interest

When an owner has interest paid out from the company, they must then pay tax on it. In the Czech Republic, interest from a loan to a shareholder is not subject to withholding tax at source (unlike, for example, the payment of profit shares). The company therefore sends the money in its full gross amount.

The taxation lies purely on the shoulders of the owner (a non-entrepreneurial natural person). They must declare the received interest in their spring tax return in the section for income from capital assets (Section 8 of the ITA) and pay the standard 15% tax on it.

If the creditor is a legal entity, the interest flows into its regular business results and is taxed at the standard corporate tax rate. Since errors in accounting and taxation have devastating consequences, consulting an expert before the first transfer is a necessity.

Conclusion

Loans between a company and its owner are a powerful tool for rapid cash flow management, but they are also a very easy target for the tax administration. To be tax-efficient and safe, they must be built on solid foundations: adherence to the arm's length principle and perfect paper records. The excuse that it is essentially "one and the same wallet" will never hold up during an audit.

A legal exception allows owners to support their company with interest-free loans, which is a huge advantage in a crisis. However, if the owner is borrowing money from the company, or if massive sums are involved, it is always necessary to calculate with the limits of thin capitalization. If you leave the creation of documentation to tax and legal professionals, you will pay only a fraction of the amount compared to the penalties for disputed interest.

The lawyers at the Prague-based law firm ARROWS have extensive experience with these transactions and know how to structure intra-company loans to be tax-optimal and legally bulletproof. Contact us for an initial consultation at consultation@arws.cz.