US Company Formation from Slovakia (2026): Tiered Corporate Tax, the Financial Transaction Tax, SZČO vs US LLC, the US–Slovak Treaty and Delaware Subsidiaries

Slovakia changed its business taxes more in 2024–2026 than in the previous decade. Corporate tax now comes in three tiers. A financial transaction tax on business bank payments arrived in 2025. Personal income tax got new, higher bands in 2026. Slovak freelancers (SZČO), small s.r.o. owners and exporters who sell to American customers have been asking whether a US company with a US bank account changes the arithmetic.

Usually it does not, for reasons this guide explains: Slovak law generally treats a US LLC as a company, a US company run from Slovakia can be a Slovak tax resident, and the transaction tax is not avoided by moving the account abroad. But there are good reasons to form a US company, especially as a US subsidiary of an s.r.o. or a Delaware parent for investors. This guide covers both, with the US–Slovak treaty.

In short: Slovak residents can own 100% of a US LLC or C-Corporation, formed remotely. Slovak corporate tax is 10% for companies with revenue up to €100,000, 21% up to €5 million and 24% above. A US company managed from Slovakia can be a Slovak tax resident. The financial transaction tax of 0.4% (capped at €40 per payment) applies to business accounts and cannot be avoided by using foreign accounts. The US–Slovak treaty limits US withholding on dividends to 15% (5% for companies owning 10% or more), exempts interest, and sets 0% or 10% on royalties. With UCB, a Delaware corporation with EIN is $358 and a Wyoming LLC with EIN is $249, all-in.

The Slovak rules that matter

Corporate tax tiers

Since 2025, Slovak corporate income tax depends on revenue:

A small s.r.o. with revenue below €100,000 pays only 10%, which already beats most foreign structures.

Dividends

Dividends paid to Slovak individuals are taxed at a flat rate that has moved between 7% and 10% in recent years, depending on the year the profit was made. Dividends from countries with which Slovakia has no tax treaty or information exchange agreement are taxed at 35%. The USA has a treaty with Slovakia, so the higher rate does not apply to US dividends.

Personal income tax and SZČO

From 2026, personal income tax has four bands: 19%, 25%, 30% and 35%. Self-employed people (SZČO) with low turnover can use a reduced rate, and many use flat expenses (paušálne výdavky) of 60% of income up to a yearly cap, which keeps their tax base low. Social and health insurance are added.

The financial transaction tax

From 2025, Slovakia taxes payments from business transaction accounts of entrepreneurs and companies: 0.4% per debit, capped at €40 per payment, and 0.8% on cash withdrawals with no cap. The law expressly prevents taxpayers from escaping the tax by using foreign bank accounts or accounts held by others. A Slovak SZČO or s.r.o. that moves its payments to a US account remains within the rules, and Slovak advisers expect such accounts to be reported. A US company's own account may also be caught if the company is a Slovak taxpayer, for example because it is managed from Slovakia.

How Slovak law sees a US LLC

The IRS disregards a single-member LLC. Slovakia does not follow the US classification. A US LLC has legal personality under its state law and limited liability for its members, and Slovak practice generally treats it as a legal entity, comparable to an s.r.o.

The consequences for a Slovak owner:

• Profits stay in the LLC for Slovak purposes until distributed, unless Slovak CFC rules apply (they apply to corporate shareholders of low-taxed foreign companies).
• Distributions are dividends from a foreign company. The US does not withhold on a disregarded LLC's distributions, so the Slovak dividend tax applies in full.
• The LLC may be a Slovak tax resident. A legal entity is resident in Slovakia if its registered office or its place of effective management is in Slovakia. An LLC run by its owner from Košice is managed from Slovakia. It is then taxed at Slovak corporate rates on worldwide profits and must keep Slovak accounts.

US LLC formation from Slovakia

US tax position

A single-member LLC with a non-resident owner pays no US income tax if the owner works from Slovakia and the LLC has no US office, employees or dependent agents (see effectively connected income explained). The LLC files Form 5472 with a pro forma Form 1120 every year, and the penalty for missing it is $25,000 (see Form 5472 explained).

Example: a 3D artist in Žilina

These are illustrative figures, not a client case, at €0.92 to the dollar.

Martin is a 3D artist in Žilina who works for US game and advertising studios, earning US$65,000 (about €60,000) a year.

• As an SZČO with flat expenses, 60% of his income (up to the cap) is deducted automatically, and he pays income tax and insurance on the rest. His Slovak business account pays the transaction tax on outgoing payments.
• Through a US LLC run from Žilina, the LLC is likely a Slovak tax resident. Its revenue is under €100,000, so it pays 10% Slovak corporate tax, and Martin pays dividend tax when he takes money out, plus he loses the SZČO flat expenses. He also pays for accounting in two countries, and the transaction tax still applies.
• Through a Slovak s.r.o., the same 10% corporate tax and dividend tax, with no US costs.

For Martin, a US LLC makes sense only if a client requires a US vendor. Then the cleaner answer is an s.r.o. or SZČO that owns or contracts with a small US LLC used only for US contracts and payments.

US C-Corp formation from Slovakia

US tax position

A US corporation pays 21% federal tax on its profits plus state tax, and files Form 1120 and Form 5472 every year (see the 21% corporate tax explained and the C-Corp guide for non-residents). Under the treaty, its dividends to an s.r.o. owning 10% or more are withheld at 5%, and they are generally exempt from Slovak corporate tax.

Example: a Bratislava cybersecurity firm

Take an illustrative case: a Bratislava company that builds security monitoring software wins customers in the USA and hires a US sales engineer in Texas. It forms a Delaware corporation:

• The US subsidiary employs the sales engineer, signs US contracts and pays US tax on its margin.
• The s.r.o. develops and owns the software. It licenses it to the US subsidiary, and the royalties are paid free of US withholding under the treaty's 0% rate for copyright royalties (software licences usually fall there, but confirm the category).
• Transfer pricing between the companies is documented.
• Dividends from the subsidiary to the s.r.o. carry 5% US withholding.

See US subsidiary for a foreign company.

Automotive suppliers

Slovakia makes more cars per head than any other country, and its suppliers ship parts to plants worldwide, including US plants. A Slovak supplier serving US automotive customers often needs a US company to act as importer of record, hold consignment stock near the plant, and employ quality engineers. A US corporation does this, paying US tax on its local margin.

Start-ups

Slovak start-ups raising money from US investors usually need a Delaware C-Corporation at the top, with the Slovak s.r.o. as a subsidiary. See raising US investment as a foreign founder.

The US–Slovak treaty

The treaty in force since 1993 (originally with Czechoslovakia, now a separate US–Slovak treaty) sets these limits:

Claim them on Form W-8BEN or W-8BEN-E (see W-8BEN-E vs W-8BEN explained).

Which state

• Delaware for a subsidiary or a start-up.
• Michigan, South Carolina, Tennessee or another automotive state where a supplier's staff and stock will be, which the company must register in.
• Wyoming or New Mexico for a small LLC owned by an s.r.o.

See best state for non-residents and the state selector.

What it costs

UCB's prices include state fees and the first year of registered agent service:

• Delaware corporation with EIN: $358.
• Wyoming LLC with EIN: $249, or $348 with a US bank account application.

A Delaware corporation costs $578 a year to keep active. A Wyoming LLC costs $121 a year, or $421 with the annual federal return. A US business address with your own suite number is $60 a year. See what a US LLC costs every year.

Documents and banking

For an individual, your Slovak passport or ID card and proof of address. For an s.r.o., a výpis z obchodného registra, translated into English, and a decision of the konateľ or general meeting approving the US company. US fintech banks accept Slovak owners readily. See US business bank accounts for non-residents.

Mistakes to avoid

• Moving business payments to a US account to avoid the transaction tax, which the law prevents.
• Running a US LLC from Slovakia and forgetting that it may be a Slovak tax resident.
• Giving up SZČO flat expenses for a US LLC that costs more.
• Not declaring LLC distributions because no US tax was withheld.
• Missing Form 5472 in a year when no US tax was due.

Frequently asked questions

How does Slovakia treat a US LLC? Generally as a legal entity, comparable to an s.r.o., and as a Slovak tax resident if it is managed from Slovakia.

Does a US bank account avoid the Slovak transaction tax? No. The law prevents avoidance through foreign accounts, and accounts of Slovak taxpayers abroad remain within the rules.

Is there a US–Slovak tax treaty? Yes. Dividends 15% (5% for companies owning 10% or more), interest 0%, royalties 0% or 10%.

What is the best US structure for an s.r.o.? Usually a Delaware corporation as a subsidiary, with transfer pricing documented.

Does my US LLC pay US tax? Not if it has no US office, staff or agents. It files Form 5472 and a pro forma 1120 every year.

How UCB can help

We form US companies for Slovak owners and s.r.o. companies remotely: the state filing, EIN, registered agent, US business address and bank application. We prepare W-8BEN-E treaty forms, and each year we file the US returns through our US tax filing service. Your daňový poradca handles the Slovak side, and we give them the US records they need. See our formation, EIN and bank account package and the Czech Republic guide for comparison.

Setting up a US company from Slovakia? WhatsApp us at +1 315 961 2956 or email enquiries@ucbsolutions.com.