EU Inc. and Poland: A Strategic Guide for Foreign Investors Setting Up in the EU Before 2028

The European Commission’s proposal for a single, EU-wide company form (EU Inc.) raises an immediate question for foreign investors planning to enter the European market: should you incorporate now, or wait? For those looking at Poland, the answer is more nuanced than it first appears.

The question every foreign founder is now asking

If you are a US, UK, Asian or Middle Eastern investor planning to launch operations in the European Union in the next three years, you are now facing a strategic decision that did not exist a year ago.

Until recently, your choice was relatively simple: pick a Member State, set up a local company (in Poland typically a spółka z ograniczoną odpowiedzialnością — sp. z o.o.), and accept that scaling into other EU countries would mean either local subsidiaries or complex cross-border structures.

The European Commission’s recent proposal for EU Inc. — formally Societas Europaea Unificata — changes that calculus. The proposal envisages an optional, fully digital, EU-wide company form that would be recognised across all 27 Member States under a single set of rules.

If the legislative timetable holds, the first EU Inc. companies could be incorporated in 2028.

That leaves foreign investors with a planning window of roughly two years — and several decisions to make now.

What EU Inc. actually offers

The proposal is built around six core features, each designed to address a specific pain point that has long pushed European founders toward Delaware rather than EU jurisdictions:

In addition, EU Inc. is expected to permit flexible share classes and simplified employee stock option plans — two features that have historically been awkward to deliver under several Member State company laws, and that matter enormously to venture-backed companies.

Crucially, EU Inc. is intended as a parallel option rather than a replacement for national company forms. Polish sp. z o.o., German GmbH and French SARL will all continue to exist. EU Inc. simply adds a 28th regime — one designed to be neutral across borders.

Why Poland still matters in an EU Inc. world

It is tempting to assume that a single EU-wide company form will make the choice of incorporation jurisdiction irrelevant. It will not. Several factors keep Poland firmly on the map for foreign investors, even after EU Inc. enters into force:

Operational footprint, not legal form, drives tax exposure. EU Inc. does not create a unified EU tax residence and does not establish a common corporate income tax regime. Where your company has its actual place of management, its permanent establishments, and its workforce will continue to determine where it pays tax.

Talent and operational costs. Poland remains one of the most cost-competitive locations in the EU for engineering, finance and shared-service operations, with a deep IT talent pool and growing R&D capacity.

Domestic market access. Poland is the largest economy in Central and Eastern Europe and the sixth largest in the EU. Many foreign investors enter the EU specifically to serve this market, and a Polish entity is operationally easier to manage than a remote EU Inc. structure when the substance is in Poland.

Existing tax incentives. Poland offers regimes — including the Polish Investment Zone (Polska Strefa Inwestycji), R&D tax relief, IP Box and the Estonian CIT model — that are tied to Polish tax residence and Polish entity status. EU Inc. does not unlock these automatically.

In short: EU Inc. simplifies the legal vehicle, but it does not simplify the economic and tax reality of doing business in Poland.

The tax trap foreign investors must understand

The single most important point for foreign investors evaluating EU Inc. is this: the legal harmonisation does not extend to taxation.

The proposal does not create:

• a unified EU corporate tax residence,
• a common corporate income tax base,
• harmonised rules on permanent establishments,
• a single VAT regime for EU Inc. companies.

In practice, an EU Inc. company will still need to determine — under the existing rules of each Member State concerned — where its place of effective management is located, where it has permanent establishments, where it should be VAT-registered, and how its cross-border payments (dividends, interest, royalties, board remuneration) are taxed under applicable double tax treaties.

For a foreign investor running operations from Warsaw, Kraków or Wrocław, this means:

1. Polish CIT will apply if Poland is the place of effective management or if a Polish PE exists.
2. Withholding tax obligations on payments to non-resident shareholders, board members and service providers will continue to apply under Polish law and the relevant double tax treaty.
3. Polish anti-avoidance rules — including the General Anti-Avoidance Rule (GAAR), beneficial ownership requirements, and “due diligence” obligations on Polish payers — will continue to apply.
4. Recent CJEU case law on board member liability for corporate tax arrears (rulings C-277/24 and C-278/24 of 2025) and Poland’s pending implementation in the Tax Ordinance amendments (UC138) will apply equally to EU Inc. board members operating in Poland.

The risk is not theoretical. Because interpretation of EU Inc. rules will largely fall to national courts, the same legal form may be treated differently across Member States. Investors should expect divergent practice — and plan accordingly.

Strategic options for foreign investors today

Given that EU Inc. is at least two years away from being operational, foreign investors planning to enter the Polish or wider EU market should not wait. Three approaches are worth considering:

Option 1: Incorporate a Polish sp. z o.o. now, convert later if useful.

For investors with a clear Polish operational footprint — a local team, local clients, local supply chain — incorporating a sp. z o.o. now is the lowest-risk path. The form is well-understood, eligible for Polish tax incentives, and operationally efficient. If EU Inc. proves attractive after 2028, conversion or restructuring can be evaluated then.

Option 2: Build the structure now with EU Inc. in mind.

For founders planning genuinely cross-border operations from day one — typically VC-backed startups expecting to scale into multiple EU markets within 2–3 years — it makes sense to design today’s holding and operational structure so that an EU Inc. holding company can be inserted later without triggering significant tax friction. This usually means clean cap tables, well-documented share classes, and avoiding contractual lock-ins that complicate restructuring.

Option 3: Wait — but only if the timing works.

For investors whose go-to-market is genuinely 2028 or later, waiting may be defensible. But it carries opportunity cost: two years of lost market presence, lost talent acquisition, and lost regulatory familiarity.

In practice, the first two options will fit the vast majority of cases.

What to watch in the legislative process

Several elements of the EU Inc. proposal remain open and will materially affect its attractiveness:

• Final position on minimum substance requirements — to prevent purely “letterbox” incorporations.
• Interaction with national tax incentives — whether Polish tools such as Estonian CIT and IP Box will be available to EU Inc. companies with Polish tax residence.
• Role of the Court of Justice of the EU — the stronger the role of the CJEU in interpreting EU Inc., the lower the risk of 27 divergent national approaches.
• Transitional rules for existing Societas Europaea companies — relevant for the small number of investors already using SE structures.

The Polish legislative response — adapting the Court Register (KRS), notarial law, and tax procedure to accommodate EU Inc. — will also matter. ATL Law is monitoring the legislative process at both EU and Polish level.

Key takeaways

EU Inc. is, on paper, the most ambitious reform of European company law in decades. It directly addresses the structural disadvantages that have pushed European founders toward Delaware: cost, speed, fragmentation, and inflexibility. For cross-border founders, VC and PE funds, and scale-ups, it has the potential to become the default choice from 2028 onward.

But EU Inc. is not a tax solution. Foreign investors operating in Poland will continue to face Polish CIT, Polish withholding tax, Polish VAT, and Polish anti-avoidance rules — regardless of whether they use a sp. z o.o. or an EU Inc. The legal form simplifies; the tax substance does not.

For most foreign investors planning entry into Poland and the wider EU between now and 2028, the practical course is to incorporate locally now and review the EU Inc. option as soon as the final text and Polish implementing rules are known.

Planning to set up in Poland? ATL Law advises foreign investors on choice of legal form, cross-border tax structuring, and the interaction between Polish corporate and tax law and emerging EU instruments such as EU Inc. Get in touch to discuss your entry strategy: office@atl-law.pl