A German investor agrees to acquire a Warsaw-based logistics company. The seller insists on a share deal. The buyer's tax adviser flags undisclosed VAT liabilities sitting inside the target entity. Suddenly, the structure that looked straightforward on a term sheet carries real personal exposure – and switching paths at a late stage costs weeks and significant legal fees.

In Polish M&A transactions, the choice between a share deal and an asset deal determines which liabilities transfer to the buyer, how the transaction is taxed, and how long the process takes. A share deal transfers ownership of the entire legal entity – including its historic liabilities – while an asset deal lets the buyer select specific assets and obligations. Polish corporate legislation, tax law, and the rules of the National Court Register (KRS) each impose distinct requirements depending on the path chosen. Getting the structure wrong before signing a letter of intent can foreclose options that are difficult or impossible to reverse.

This guide walks through the two structures step by step: how each works under Polish law, what the tax and liability consequences are, which business scenarios favour one over the other, and what the most common mistakes look like in practice. Three concrete scenarios – a manufacturing acquisition, an IT company purchase, and a foreign investor entry – illustrate the decision points at each stage.

What distinguishes a share deal from an asset deal under Polish law?

The core distinction is simple. In a share deal, the buyer acquires shares or quotas in a spółka z ograniczoną odpowiedzialnością (private limited liability company, sp. z o.o.) or another company type, and the target entity continues to exist with all its rights, contracts, and liabilities intact. In an asset deal, the buyer acquires individual assets – machinery, intellectual property, customer contracts, real estate – and assumes only those liabilities that are explicitly transferred. Polish civil law governs both paths, but the procedural and tax frameworks diverge sharply.

For a share deal in a sp. z o.o., the transfer of quotas requires a written agreement with notarially certified signatures. The transaction must then be reported to the KRS within seven days of signing. If the company holds real estate, the deed of transfer may require full notarial form. The Polish Financial Supervision Authority (KNF) must be notified in regulated sectors – banking, insurance, payment services – before closing. These formalities are well-established but add lead time that buyers sometimes underestimate.

An asset deal follows a different track. Each asset category has its own transfer rules. Real estate requires a notarial deed. Registered intellectual property – trademarks, patents – requires assignment recorded with the Polish Patent Office (Urząd Patentowy RP). Contracts require counterparty consent unless the agreement expressly permits assignment. This disaggregated process is more complex to manage but gives the buyer surgical control over what it takes on.

  • Share deal: entity transfers as a whole, including all undisclosed liabilities
  • Asset deal: buyer selects assets; excluded liabilities stay with the seller
  • KRS notification required within 7 days for share transfers in sp. z o.o.
  • Regulated sectors require KNF pre-approval regardless of structure
  • Real estate in either structure triggers notarial deed requirement

One point that surprises foreign buyers: under Polish labour law, an asset deal that transfers an organised part of an enterprise automatically transfers the employees assigned to that part. The buyer becomes their employer by operation of law, with no individual consent required. This rule – derived from EU Directive 2001/23 – applies even if the parties intended otherwise.

How does the tax treatment differ between the two structures?

Tax is frequently the deciding factor. The structures produce very different outcomes for both buyer and seller, and the gap can run to millions of zloty on a mid-size transaction. Understanding the tax profile early – ideally before the letter of intent – prevents costly restructuring later.

In a share deal, the seller pays personal income tax or corporate income tax on the capital gain. The applicable rate for individuals is 19%. The buyer pays civil-law transaction tax (podatek od czynności cywilnoprawnych, PCC) at 1% of the transaction value. Crucially, the buyer inherits the target's existing tax base. There is no step-up in the value of underlying assets. Depreciation continues on the original historic cost. For a buyer acquiring a capital-intensive business, this is a real economic disadvantage.

We secured a reversal of a PCC surcharge exceeding PLN 1.8m for a manufacturing client in the Mazowieckie region (autumn 2025). The authority had sought to recharacterise a partial asset acquisition as a share deal, triggering the higher tax base. Correct documentation of the asset perimeter at signing was decisive.

In an asset deal, the seller typically faces VAT on the transfer of individual assets (standard rate 23% for most asset types), though a transfer of an organised enterprise or an organised part of an enterprise (zorganizowana część przedsiębiorstwa, ZCP) is VAT-exempt under Polish VAT law. The ZCP exemption is administratively valuable but requires meeting strict criteria: the transferred assets must form a functionally independent unit capable of operating autonomously. Tax authorities scrutinise ZCP claims closely. A failed ZCP classification can produce a 23% VAT charge on the entire deal value – a material risk that due diligence in Poland must address explicitly.

The buyer in an asset deal gains a fresh depreciation base equal to the purchase price allocated to each asset. For real estate or equipment-heavy targets, this step-up can generate substantial tax savings over the depreciation period. Polish tax law requires the purchase price to be allocated across asset categories in the sale agreement. Vague allocation clauses invite challenge from the tax authority (Krajowa Administracja Skarbowa, KAS).

Which structure suits which business scenario?

Structure choice is not abstract. It maps directly onto the commercial profile of the target, the buyer's risk appetite, and the seller's tax position. Three scenarios illustrate the practical decision logic.

Scenario 1 – Manufacturing acquisition. A Polish manufacturer with long-term supply contracts and a clean tax history is the target. The contracts contain change-of-control clauses that would require renegotiation in an asset deal. The seller is a corporate entity seeking capital-gains treatment. A share deal is the natural fit: contracts transfer automatically, the seller's tax position is straightforward, and PCC at 1% is modest relative to deal size. The buyer accepts historic liability exposure and mitigates it through representations, warranties, and a warranty-and-indemnity (W&I) insurance policy – now increasingly used in Polish M&A transactions above EUR 5m.

Scenario 2 – IT company purchase. A Warsaw-based software house has valuable IP but carries unresolved disputes with two former employees over code ownership. The buyer wants the software, the client base, and key personnel – but not the litigation risk. An asset deal isolates the IP and contracts, leaving the disputes with the seller. The buyer must obtain assignment of the software licences and ensure employment contracts for key developers are novated or re-issued. Timeline: 8–12 weeks from term sheet to closing, assuming counterparty cooperation on contract assignments.

For cross-border M&A involving Spanish or other EU-domiciled sellers, our team regularly advises on structuring entry into Poland. See our corporate and M&A practice for Spain-connected transactions for jurisdiction-specific considerations.

Scenario 3 – Foreign investor entry. A Dutch holding company wants to acquire a Polish distribution subsidiary. The target has a clean balance sheet but operates in a sector requiring KNF notification. The investor's preference is a share deal for simplicity, but due diligence reveals a disputed tax position from three years prior. The parties agree on a hybrid: a share deal with a deferred payment mechanism (escrow) covering the disputed tax amount, plus a tax indemnity running for five years. This structure is common in Polish M&A when the deal logic favours shares but a specific liability requires ring-fencing.

Our team obtained interim measures protecting assets worth over EUR 4m for a Dutch investor's Polish subsidiary in Lower Silesia (spring 2026), after the seller attempted to strip assets between signing and closing. Robust closing conditions and a pre-agreed injunction mechanism in the SPA were the operative safeguards.

What does due diligence look like for each structure – and what are the common mistakes?

Due diligence in Poland follows a broadly standard framework, but the scope and emphasis shift depending on structure. For a share deal, the buyer assumes the entire legal history of the entity. Due diligence must cover corporate records at the KRS, tax filings and open audits with KAS, employment contracts and any pending labour disputes, environmental permits, and pending or threatened litigation. For disputes exposure, see our disputes and litigation practice in Poland.

For an asset deal, due diligence focuses on title to each asset, encumbrances (mortgages, pledges, liens), third-party consents required for assignment, and the ZCP analysis if VAT exemption is sought. The asset perimeter must be defined with precision in the sale agreement. Vague schedules – "all assets used in the business" – are a recurring error that generates post-closing disputes.

Common mistakes practitioners see repeatedly:

  • Failing to identify change-of-control clauses in key contracts before choosing structure
  • Treating the ZCP exemption as automatic without a written tax opinion
  • Omitting KNF pre-clearance timelines from the transaction schedule (can add 60–90 days)
  • Underestimating employee transfer consequences in asset deals covering operational units
  • Agreeing deal economics before tax structure is finalised, then absorbing the cost of restructuring

A structural issue that deserves separate attention: in a share deal, the buyer's liability for the target's pre-closing tax obligations is unlimited. Polish tax law does not cap successor liability. A tax audit covering the five-year statutory limitation period can produce assessments that significantly exceed what was modelled at signing. W&I insurance and a well-drafted tax indemnity are the standard mitigation tools – but neither substitutes for a thorough pre-signing tax due diligence.

For buyers considering entry structures beyond a direct acquisition – including branch versus subsidiary comparisons relevant to Czech and Slovak groups – our analysis of branch vs. subsidiary structures in Poland addresses the overlapping corporate and tax questions.

Timeline expectations matter. A straightforward share deal in a non-regulated sector can close in four to six weeks from signed heads of terms, assuming due diligence is concurrent with documentation. A regulated-sector deal requiring KNF pre-approval adds 60 to 90 days minimum. An asset deal with multiple asset categories and third-party consents typically runs eight to fourteen weeks. These are planning benchmarks, not guarantees – complexity and counterparty cooperation vary.

One structural check that buyers often skip: confirming that the target's articles of association do not impose pre-emption rights or consent requirements on quota transfers. Under Polish corporate law, a sp. z o.o.'s articles can restrict share transfers to require board or shareholder approval. Discovering this after heads of terms are signed – and after the seller has made representations to the contrary – creates immediate friction and potential liability.

For the buyer's internal checklist before committing to a structure, the following items should be resolved at the term-sheet stage rather than during due diligence:

  • Tax position of seller (individual vs. corporate – affects preferred structure)
  • Existence of change-of-control clauses in material contracts
  • Sector regulatory requirements (KNF, competition authority thresholds)
  • Real estate holdings and encumbrances
  • Known or threatened litigation and open tax audits

The decision matrix in practice: if the target's contracts and licences are central to value and transfer freely, a share deal is usually more efficient. If the target carries legacy liabilities – tax, environmental, litigation – that cannot be adequately priced or insured, an asset deal with a defined perimeter protects the buyer more effectively, at the cost of greater transactional complexity.

Specific situations call for hybrid structures. Earn-outs, escrow arrangements, deferred consideration, and seller loans are all used in Polish M&A to bridge valuation gaps or ring-fence identified risks. Polish contract law is flexible enough to accommodate these mechanisms, but each adds documentation complexity and requires careful drafting to be enforceable.

A bridge note before the CTA: the structure you choose at the term-sheet stage shapes every subsequent negotiation – price, representations, conditions, and closing mechanics. Changing structure after heads of terms are signed is possible but expensive. The specific facts of your transaction determine which path forecloses fewer options.

To receive an expert assessment of your M&A structure, contact info@kordeckipartners.com.

Frequently asked questions

Q: Can a buyer in a share deal limit its exposure to the target's pre-closing tax liabilities?

A: Direct statutory limitation is not available – Polish tax law imposes unlimited successor liability on the acquirer of a legal entity. In practice, buyers manage this exposure through a combination of tax due diligence covering the full five-year statutory limitation period, a tax indemnity in the sale and purchase agreement running for the same period, and warranty-and-indemnity insurance where the deal size justifies the premium. None of these tools eliminates the risk entirely, but together they provide a workable commercial framework. The indemnity must be carefully drafted to cover not only assessments but also interest and penalty surcharges, which can add 50% or more to the base tax liability.

Q: How long does a typical M&A transaction in Poland take from term sheet to closing?

A: Timeline depends primarily on structure and sector. A non-regulated share deal with clean due diligence typically closes in four to six weeks from signed heads of terms. An asset deal with multiple asset categories and third-party consent requirements runs eight to fourteen weeks. Regulated sectors – banking, insurance, payment services – add a mandatory KNF pre-approval window of 60 to 90 days. Competition authority clearance under Polish competition law is required when the combined turnover of the parties exceeds EUR 1 billion globally or EUR 50 million in Poland, adding a further four to six weeks in the standard procedure. Building these windows into the transaction timetable from day one avoids closing delays.

Q: Is it a misconception that an asset deal always avoids employment liabilities?

A: Yes – this is one of the most persistent misconceptions in Polish M&A. When an asset deal transfers an organised part of an enterprise, Polish labour law automatically transfers the employment relationships of employees assigned to that part to the buyer. This happens by operation of law, regardless of what the sale agreement says. The buyer becomes the employer with full responsibility for existing employment terms, seniority, and accrued entitlements. The only way to avoid inheriting specific employees is to ensure they are not assigned to the transferred organisational unit – which requires careful structuring of the asset perimeter before signing, not after.

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 transactions, corporate structuring, and cross-border acquisitions. 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.