A German holding company decides to absorb its Polish spółka z ograniczoną odpowiedzialnością (private limited liability company, sp. z o.o.) subsidiary. The transaction looks clean on paper. Then the legal team discovers that the EU Mobility Directive – now transposed into Polish law – imposes a pre-merger certificate procedure, employee participation rules, and a two-month creditor protection window. Missing any single step forfeits the entire registration and forces the group to restart from scratch.

The EU Mobility Directive, transposed into Polish law through amendments to the Kodeks spółek handlowych (Commercial Companies Code, KSH), introduced a mandatory pre-merger certificate issued by the National Court Register (KRS) before any cross-border merger can proceed. The procedure applies to all capital companies with registered offices in EU member states, regardless of size. Failure to obtain the certificate within the statutory window precludes registration of the merger in the target jurisdiction.

This alert covers three things: what the Directive changed for Polish entities, which thresholds and timelines now apply, and the immediate steps boards must take before filing. Foreign investors and Polish groups with subsidiaries across the EU should treat this as an operational checklist, not background reading.

What did the EU Mobility Directive change for Polish companies?

The Directive replaced the fragmented bilateral framework with a single procedural track. Polish capital companies – primarily the sp. z o.o. and the spółka akcyjna (joint-stock company, SA) – are now subject to a unified cross-border merger regime. The KSH amendments introduced three structural changes that did not exist before.

First, the pre-merger certificate is now mandatory. The management board must submit a merger plan to the KRS at least one month before the general meeting that approves the transaction. The KRS then has 30 days to issue or refuse the certificate. Without it, no foreign registry will accept the filing.

Second, employee participation rights are triggered automatically when the absorbing company employs more than 500 workers or when the absorbed company had a participation scheme in its home state. The Polish Financial Supervision Authority (KNF) is not directly involved in standard mergers, but regulated entities – banks, insurers, investment firms – require KNF clearance before the KRS stage. That adds up to 60 additional days to the timeline.

Third, the anti-abuse review is now explicit. The KRS must assess whether the merger is structured primarily to circumvent employee rights, tax obligations, or creditor protections. A negative finding blocks the certificate. Groups using a cross-border merger to shift a Polish workforce to a lower-participation jurisdiction should expect scrutiny. We advised a manufacturing client in Silesia (spring 2026) to restructure the transaction sequence after an initial KRS query flagged the employment angle – avoiding a full refusal that would have cost the group at least three months.

Who is affected and what are the key thresholds?

The new rules apply to every cross-border merger involving at least one Polish capital company. There is no minimum turnover or asset threshold for the procedural requirements. Size affects only the employee participation trigger, not the certificate obligation itself.

The participation threshold sits at 500 employees. If the surviving entity will employ more than 500 people across all member states, a special negotiating body must be formed within 10 weeks of the merger plan being published. Negotiations can last up to six months. If no agreement is reached, a standard reference scheme applies automatically. Groups that ignore this window lose the right to challenge the scheme later.

  • Merger plan published at least one month before the general meeting
  • KRS certificate issued within 30 days of a complete application
  • Creditor objection window: two months from the plan's publication
  • Employee participation negotiations: up to six months if triggered
  • Regulated entities: add up to 60 days for KNF or sectoral clearance

For groups with operations in multiple jurisdictions, the timeline compounds. A merger absorbing a Polish sp. z o.o. into a German GmbH must satisfy both the KRS procedure and the German commercial register requirements simultaneously. Due diligence Poland-side should map all pending creditor claims before the plan is published, because a single creditor objection filed within the two-month window can suspend registration. For a detailed comparison of entry structures that may serve as alternatives, see our analysis of branch vs subsidiary in Poland for Czech Republic groups.

Investors acquiring a Polish target that is itself party to a pending cross-border merger face a specific risk. The M&A Poland due diligence file must confirm that no merger plan has been registered with the KRS in the prior 12 months. An undisclosed plan creates a contingent liability that transfers with the shares. Our team identified exactly this issue for a Pomerania-based technology acquisition (autumn 2025), allowing the buyer to negotiate a price adjustment before signing.

What must boards do immediately?

The most common mistake is treating the cross-border merger as a purely legal filing exercise. It is not. The board carries personal liability for the accuracy of the merger plan, the completeness of the creditor notification, and the correctness of the employee headcount that determines participation obligations. A defective plan that passes the general meeting but fails the KRS anti-abuse review cannot be corrected retroactively.

Three immediate actions apply to any board contemplating a cross-border merger involving a Polish entity. First, commission a pre-filing legal review of the merger plan against the KSH requirements before any public disclosure. Second, verify the employee headcount across all affected group entities – not just the Polish company – to determine whether the participation procedure is triggered. Third, instruct the finance team to identify all creditors with claims exceeding PLN 50,000, since these creditors have the strongest standing to file objections during the two-month window.

Boards of regulated entities must add a fourth step: confirm the applicable sectoral regulator's timeline before setting the merger plan publication date. Building the KNF clearance period into the project plan from day one avoids the most expensive delays. For technology and financial services companies, the intersection with DORA obligations is also relevant – see our note on the DORA ICT risk management framework for Polish entities.

Foreign buyers conducting M&A Poland transactions should also review the target's corporate history for any prior cross-border restructurings. Undisclosed mobility transactions create registration gaps that surface only during KRS due diligence. For buyers from outside the EU, the red-flag checklist in our guide on red flags in Polish M&A for Ukrainian buyers covers the most common KRS anomalies.

What to prepare before filing a cross-border merger plan:

  • Draft merger plan reviewed against current KSH requirements
  • Consolidated employee headcount across all group entities in affected states
  • Creditor register with claim amounts and objection-risk assessment
  • Confirmation of any sectoral regulatory clearance requirements
  • KRS filing timeline mapped against the general meeting date

A cross-border merger that misses the KRS certificate window does not simply pause. It fails. The group must republish the plan, restart the creditor protection period, and – if the general meeting resolution has already been passed – convene a new meeting. That sequence typically adds four to six months and material legal cost to the transaction.

Your company's specific situation determines which procedural track applies and how much time remains before the window closes. Acting after the creditor objection period opens forfeits the ability to restructure the transaction without restarting the entire procedure.

To receive an expert assessment of your cross-border merger timeline and KRS filing requirements, contact info@kordeckipartners.com.

Frequently asked questions

Q: Does the EU Mobility Directive apply to mergers involving non-EU companies?

A: No. The Directive governs mergers between capital companies registered in EU member states only. A merger absorbing a Polish sp. z o.o. into a company registered in the United Kingdom or Switzerland falls outside the Directive's scope and is governed by bilateral arrangements or general Polish private international law. The KRS will apply different procedural requirements in those cases.

Q: How long does the full cross-border merger procedure take in Poland?

A: For a straightforward merger not triggering employee participation, the minimum timeline from plan publication to KRS registration is approximately three to four months. If the 500-employee threshold is crossed and negotiations run their full course, the procedure can extend to ten or eleven months. Regulated entities should add the sectoral clearance period on top of that baseline.

Q: Is it a misconception that a cross-border merger automatically transfers all Polish contracts and licences?

A: Yes, that is a common misconception. Universal succession under Polish law transfers most contracts automatically, but certain licences – particularly those issued by the KNF or sector-specific regulators – are personal to the licensed entity and do not transfer by operation of law. They must be reapplied for in the surviving entity's name. Failing to identify these licences during due diligence Poland is one of the most costly oversights in cross-border M&A transactions.

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 cross-border mergers, M&A Poland transactions, and corporate restructuring. 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.