A foreign investor signs a term sheet for a Polish manufacturing company. The data room opens. Hundreds of documents arrive in Polish. The clock starts ticking – and the real work begins. Due diligence on a Polish acquisition target is not a box-ticking exercise. It is the process that determines whether the deal closes, at what price, and on what terms.
Due diligence on a Polish acquisition target covers corporate, legal, tax, financial, real estate, employment, and regulatory workstreams. Polish law imposes specific disclosure obligations through the National Court Register (Krajowy Rejestr Sądowy, KRS) and the Central Register of Beneficial Owners (Centralny Rejestr Beneficjentów Rzeczywistych, CRBR). A well-structured process typically runs four to eight weeks and should be scoped before the data room opens – not after.
This guide walks through the key workstreams, common mistakes, and three business scenarios that illustrate how scope varies by target type. It is structured for buyers with no prior exposure to Polish law.
What does due diligence on a Polish target actually cover?
The answer depends on the target's structure, sector, and size. That said, every Polish acquisition review shares a common core. Corporate law workstream first: verify the target's incorporation documents, shareholder register, and extract from the National Court Register (KRS). The KRS is a public register – but it can be outdated by weeks. Always request certified extracts and cross-check against the actual constitutional documents held by the company.
Tax workstream is where most surprises live. Polish corporate income tax (CIT) runs at 19% standard rate, with a reduced 9% rate for smaller taxpayers. VAT compliance, transfer pricing documentation, and any open tax inspections by the National Revenue Administration (Krajowa Administracja Skarbowa, KAS) must be reviewed. A KAS audit can reopen up to five prior tax years. That exposure can be material.
Employment workstream covers collective agreements, pending claims before labour courts, and the status of key employees. Poland's Kodeks pracy (Labour Code) provides strong employee protections. Redundancy costs and notice periods must be modelled into deal economics.
Real estate workstream applies whenever the target owns or leases land or buildings. For land, the spatial planning and zoning rules in Poland directly affect use rights and development potential. Lease agreements under Polish law can contain unusual termination clauses that buyers often overlook.
- Corporate: KRS extract, share register, constitutional documents
- Tax: CIT/VAT compliance, KAS audit history, transfer pricing
- Employment: Labour Code obligations, headcount, pending disputes
- Real estate: title, zoning, lease terms
- Regulatory: sector licences, permits, environmental clearances
How should buyers structure the due diligence process in Poland?
Structure the process in two phases. Phase one – desktop review – runs two to three weeks and covers publicly available information: KRS filings, court registers, land and mortgage registers (księgi wieczyste), and CRBR entries. Phase two – data room review – runs a further two to five weeks depending on scope and responsiveness of the seller. Total elapsed time: four to eight weeks for a mid-market deal.
Week one sets the tone. Issue a due diligence request list on day one. A standard request list for a Polish spółka z ograniczoną odpowiedzialnością (limited liability company, sp. z o.o.) runs to 80–120 items. Organise it by workstream. Sellers respond faster when questions are grouped logically rather than sent as a single undifferentiated list.
We secured a reversal of a tax surcharge exceeding PLN 2m for a manufacturing client in the Mazowieckie region (autumn 2025). The issue was identified during phase one desktop review – a KAS audit that had not been disclosed in the seller's representations. Early identification allowed the buyer to negotiate an escrow mechanism rather than walk away.
Cost benchmarks matter. Legal due diligence fees for a mid-market Polish sp. z o.o. typically range from EUR 15,000 to EUR 50,000 depending on complexity and the number of workstreams. Financial due diligence adds a comparable amount. Factor these costs into deal budgeting before the process starts – not after the data room opens.
Decision matrix by deal size:
- Below EUR 2m: streamlined scope, two to three workstreams, two weeks
- EUR 2m – EUR 20m: full scope, all workstreams, four to six weeks
- Above EUR 20m: full scope plus specialist advisors, six to eight weeks
What are the most common due diligence mistakes in Polish M&A?
The most common mistake is scoping too narrowly. Buyers focused on financial performance often underweight legal and regulatory workstreams. In Poland, that creates real exposure. A target with a missing environmental permit or an undisclosed pledge registered in the Rejestr Zastawów (Pledge Register) can create post-closing liabilities that exceed the deal value.
Second mistake: relying on seller warranties as a substitute for diligence. Polish law governs the sale and purchase agreement. Warranty and indemnity (W&I) insurance is available in the Polish market, but insurers require a clean diligence report. Gaps in diligence translate into exclusions in coverage – forfeiting the protection that buyers assume they have purchased.
Third mistake: ignoring beneficial ownership. The CRBR requires all Polish companies to register their ultimate beneficial owners. Non-compliance carries fines of up to PLN 1m. More importantly, a discrepancy between the CRBR entry and the actual ownership structure is a red flag that can signal undisclosed related-party transactions or sanctions exposure.
Our team obtained interim measures protecting assets worth over EUR 5m for a German investor's subsidiary in Lower Silesia (spring 2026). The trigger was a pledge that had not appeared in the seller's disclosure letter but was registered in the Pledge Register – visible only to a buyer who ran the full register search.
For buyers considering how to set up company Poland structures post-acquisition – whether to retain the existing sp. z o.o. or establish a branch – see our comparison at branch vs. subsidiary in Poland.
How does due diligence scope vary across three business scenarios?
Scope is not one-size-fits-all. Three scenarios illustrate how workstream emphasis shifts by target type. Each has a different risk profile and a different critical path.
Scenario 1 – Manufacturing company. A Silesian manufacturer with 200 employees and owned real estate. Critical workstreams: environmental permits, real estate title, Labour Code compliance, and machinery encumbrances. Environmental liability can run deep in Polish manufacturing – remediation orders from the Regional Inspectorate for Environmental Protection (Regionalna Inspekcja Ochrony Środowiska, RIOŚ) are not always disclosed voluntarily. Allow six weeks minimum.
Scenario 2 – IT company. A Warsaw-based software house with 40 employees and no owned real estate. Critical workstreams: IP ownership (are the software rights actually assigned to the company?), employment contracts for key developers, and data protection compliance under GDPR as implemented in Polish law. Many Polish IT companies use B2B contractor arrangements. These create reclassification risk under Polish social insurance law (Zakład Ubezpieczeń Społecznych, ZUS). Allow four weeks.
Scenario 3 – Foreign investor acquiring a Polish sp. z o.o. A German strategic buyer acquiring a Polish distribution subsidiary. Critical workstreams: transfer pricing between the target and its existing group, any pending customs or excise issues, and change-of-control provisions in key customer contracts. For context on red flags specific to cross-border buyers, see our guide on red flags in Polish M&A for UK buyers. Allow five to six weeks.
Across all three scenarios, the KRS and CRBR searches take one to two days. Do not delay them. They are the foundation for every other workstream.
What to prepare: a practical checklist for buyers
Before the data room opens, buyers should have the following in place. Preparation time is typically five to ten business days. Each item below is a prerequisite – not a nice-to-have.
- Signed non-disclosure agreement governed by Polish law (or dual-jurisdiction NDA)
- Scoped due diligence request list organised by workstream
- Engaged Polish counsel with M&A Poland experience and KRS access
- Budget approved for legal, financial, and (where applicable) technical diligence
- Internal project lead identified with authority to escalate findings
One practical note: Polish courts operate on paper-based filings more than buyers expect. Obtaining certified KRS extracts, land register printouts, and court clearance certificates takes two to five business days each. Build that time into the project plan. A buyer who assumes digital instant access will lose days at a critical moment.
The due diligence report itself should be structured as a findings summary with a risk-rated issues list. Each issue should map to a deal protection mechanism: price adjustment, escrow, specific indemnity, or condition precedent. That mapping is what converts a diligence report into a negotiating instrument.
Specific situations require tailored assessment. If the target holds a licence from the Polish Financial Supervision Authority (Komisja Nadzoru Finansowego, KNF) – for example, a payment institution or investment firm – the change-of-control approval process adds eight to twelve weeks to the timeline. That is an irreversible consequence of failing to identify the regulatory workstream early: the deal timetable cannot be compressed once a KNF approval is in the critical path.
Frequently asked questions
Q: How long does due diligence take for a mid-market Polish company?
A: For a mid-market sp. z o.o. with revenues between EUR 5m and EUR 50m, four to six weeks is a realistic timeline for a full-scope review. Regulated targets – those holding licences from the KNF or sector-specific permits – require additional time for regulatory workstreams. Compressing the timeline below four weeks increases the risk of missing register-based encumbrances that are not visible in the data room.
Q: Is it true that the KRS shows everything about a Polish company?
A: This is a common misconception. The National Court Register shows corporate structure, registered capital, board members, and certain filings – but it is not always current. Updates can lag by several weeks. The KRS does not show pledges (those appear in the Pledge Register), tax liabilities, or pending administrative proceedings. A thorough diligence process requires searches across multiple registers, not just the KRS.
Q: What does legal due diligence cost for a Polish acquisition?
A: Legal due diligence fees depend on scope, target complexity, and the number of workstreams. For a straightforward sp. z o.o. acquisition below EUR 5m, fees typically start at EUR 10,000–15,000. For a mid-market deal with real estate, employment, and regulatory workstreams, EUR 30,000–50,000 is more typical. These figures cover legal review only – financial and technical diligence are additional. Buyers should request a scoped fee estimate before the data room opens.
Your specific transaction requires an assessment that goes beyond a general guide. Missing a single register entry or misreading a Labour Code obligation can produce post-closing liabilities that are difficult to unwind – and in some cases, irreversible.
If your company is considering a Polish acquisition and needs a structured due diligence process – including KRS searches, tax workstream review, and deal protection mapping – contact our team: info@kordeckipartners.com.
About KORDECKI & Partners
KORDECKI & Partners is a law firm based in Warsaw and Krakow, advising business clients across 30 jurisdictions. Our team combines expertise in Polish and international law with a practical approach to M&A due diligence and corporate transactions. We work with Polish entrepreneurs, foreign investors, and in-house legal teams. To discuss your situation, contact info@kordeckipartners.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. KORDECKI & Partners assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@kordeckipartners.com.