The Polish Simple Joint-Stock Company (PSA): Is It the Right Vehicle for a Foreign-Backed Startup?
A decision briefing for foreign founders and investors entering the Polish market | ATL Law
| Legal status — read first
The PSA (prosta spółka akcyjna) has been part of Polish law since 1 July 2021, under Articles 300¹–300¹³⁴ of the Commercial Companies Code (KSH). This briefing states the law as of September 2026. Proposals to change the data disclosed in the shareholders’ register (e.g. PESEL number / date of birth) are under discussion. As of publication these are early-stage proposals, not binding law — check the current legislative stage before relying on them. |
Poland’s Simple Joint-Stock Company is the newest of the country’s three capital companies, purpose-built for innovative and venture-backed ventures. For a foreign investor, its appeal is concrete: a share capital floor of PLN 1, no-par shares, the ability to cover shares with work or services, and freedom to shape governance around a cap table of founders, funds and an employee option pool. Although designed with startups in mind, the PSA is not restricted to innovative or technology activity — any lawful business may use it unless special rules require another form.
But the decision is rarely about how “simple” the vehicle is. It turns on how the PSA interacts with a cross-border ownership structure — where your shareholders sit, how founders are compensated, and how profits eventually leave Poland. This briefing leads with those questions, then sets out the mechanics.
1. Three questions a foreign investor should answer first
Is your shareholder a natural person or a holding company?
This is the single most consequential question. Poland’s “Estonian CIT” regime — which defers corporate tax until profits are distributed and lowers the combined effective rate — is available to a PSA only if all shareholders are natural persons. If a foreign corporate parent holds the shares directly, the regime is off the table. Founders holding shares personally keep it open. Decide this before you incorporate, not after.
Will founders contribute “sweat equity”?
The PSA uniquely allows shares to be covered by the provision of work or services. It is ideal for technical founders — but a shareholder who contributes work or services is treated by Polish social security as a self-employed person and pays full social contributions (see section 3). Plan the founders’ contribution type deliberately.
How will you run funding rounds and an ESOP?
No-par shares, preferred shares and flexible issuance let the PSA mirror the term sheets that VC investors expect — liquidation preferences, vesting, option pools. If your roadmap includes priced rounds and an employee stock option plan, the PSA maps to that logic more naturally than a limited liability company.
2. What makes the PSA attractive
- Low entry threshold: share capital (kapitał akcyjny) starts at PLN 1 and, unlike in an sp. z o.o. or S.A., is not fixed in the articles — so it is easy to change later. Contributions other than work or services must be paid up in full within three years of registration.
- No-par shares: shares carry no nominal value; the number of shares maps to corporate rights, decoupling ownership from a rigid capital figure.
- Investor-ready capital structure: preferred and non-voting shares, and streamlined issuance across successive rounds.
- Two governance models: the classic management board (with an optional supervisory board), or a one-tier board of directors that combines management and oversight — familiar to investors used to an Anglo-American board.
- Fast, low-cost formation: a standard-template company with cash contributions can be registered online via the S24 system — often within a few days, sometimes one working day, though 24 hours is not a guaranteed statutory term. The company agreement itself is exempt from transfer tax (PCC), which does not exclude PCC on later transactions. Work/service contributions or bespoke articles require a notarial deed and the PRS system.
- Dematerialised shares: shares exist in a shareholders’ register kept by an authorised entity (e.g. a brokerage house); the law also permits a distributed, decentralised ledger. This gives clean, verifiable ownership records for due diligence. Title to shares passes only on entry in the register, not on signing the transfer.
3. The cost and compliance side
Social security on “sweat equity” shareholders
Merely holding shares in a PSA does not trigger mandatory social insurance — an advantage over a single-member sp. z o.o., whose sole shareholder pays full social contributions. However, under Article 8(6)(4a) of the Social Insurance System Act, a shareholder whose contribution is the provision of work or services is treated as a person carrying on business activity and pays the full contributions (“duży ZUS”), regardless of the number of shareholders and without access to start-up reliefs — those reliefs are reserved by statute for entrepreneurs registered in the CEIDG business register, whereas a PSA shareholder falls under a separate insurance title. A shareholder with another insurance title (e.g. employment paying at least the minimum wage) is exempt from social contributions on that basis but still owes the health contribution; the exact effect of overlapping titles should be assessed case by case.
Double taxation and the Estonian CIT conditions
A PSA is a CIT taxpayer, so the default is classic double taxation: corporate income tax at company level, plus 19% withholding on dividends. Electing the lump-sum “Estonian CIT” defers tax until distribution and lowers the combined effective burden — but the conditions matter: all shareholders must be natural persons, the employment condition must be met, and passive income must stay below 50% of revenue. For foreign-owned structures, the natural-person condition is usually the binding constraint (see section 5). Note too that the regime taxes not only distributed dividends but also “hidden profits” and non-business expenses — relevant to related-party dealings such as loans or benefits to shareholders.
Accounting, reporting and UBO
A PSA keeps full accounting books and files financial statements with the National Court Register (KRS). Within 14 days of KRS registration (Saturdays and public holidays excluded) it must report its beneficial owners to the Central Register of Beneficial Owners (CRBR) under the Polish AML Act; breaches carry a fine of up to PLN 1,000,000, scaled to the nature of the breach.
Creditor protection — the solvency test
In exchange for the absence of a hard capital floor, the law protects creditors: before any distribution to shareholders, the management board must assess whether the company will retain the ability to meet its liabilities as they fall due within six months (a solvency test), and reducing the share capital triggers a creditor-notification procedure.
4. Repatriating profits: dividend withholding tax and treaties
Dividends paid to a foreign shareholder are, as a rule, subject to 19% Polish withholding tax. This may be reduced under the relevant double-tax treaty or, for EU/EEA parent companies, exempted under the Parent-Subsidiary Directive (subject to minimum shareholding and holding-period conditions). The EU exemption is not automatic: it requires the conditions of Article 22(4) of the CIT Act (broadly, at least a 10% holding for an uninterrupted two years), a tax-residence certificate, beneficial-owner status and due diligence by the paying agent. Where payments to a single related foreign entity exceed PLN 2 million per year, the pay-and-refund mechanism applies (tax is first withheld at the domestic rate, then reclaimed). Model this for your specific structure before the first distribution.
5. PSA vs. sp. z o.o. vs. S.A. — an investor’s comparison
The differences that matter most to a foreign-backed startup:
| Criterion | PSA | Sp. z o.o. (LLC) | S.A. (JSC) |
| Minimum capital | PLN 1 (share capital) | PLN 5,000 | PLN 100,000 |
| Nominal value | none (no-par shares) | share min. PLN 50 | share min. PLN 0.01 |
| Work/service contributions | yes | no | no |
| Social security, sole holder | none from shares (full ZUS if contribution = work/services) | full ZUS | none |
| Online setup in 24h (S24) | yes (cash contributions) | yes | no |
| Governance | board + optional supervisory, or one-tier board | management board; supervisory optional | board + mandatory supervisory |
| Shareholders’ register | mandatory, external operator | — | mandatory |
| Estonian CIT | yes (individuals only; conditions) | yes (conditions) | yes (conditions) |
| Public listing | no (non-public company) | no | yes |
| Typical use | startups, innovative ventures | SMEs, all-purpose | large, capital-intensive |
6. The verdict: when the PSA is worth it
The PSA is usually the right call when founders contribute know-how and want a cap table built for VC rounds, when a low entry threshold and flexibility matter, and when shareholders remain natural persons — keeping Estonian CIT available.
Consider an alternative — most often the sp. z o.o. — when a foreign holding company will hold shares directly, when the business is conventional rather than innovative, or when counterparties and banks expect a long-established, widely recognised form. The PSA is still a relatively young vehicle and less common than the sp. z o.o., which can surface in negotiations with financial institutions.
Let the target ownership structure, tax plan and funding model drive the choice — not the word “simple.”
How ATL Law supports foreign investors
ATL Law — Anna Błaszak Kancelaria Radcy Prawnego — advises foreign investors doing business in Poland, with offices in Kraków, Katowice and Warsaw. We support clients end to end: from choosing and registering the right legal form, through ownership and tax structuring (including Estonian CIT and withholding-tax analysis), to corporate law, employment and HR, tax advisory, cross-border matters and M&A. We work in both Polish and English.
Contact: office@atl-law.pl | www.atl-law.pl
This material is for information only and does not constitute legal or tax advice. Law as of September 2026.