A German investor agrees heads of terms for a Polish manufacturing business. The seller insists on a share deal. The buyer's tax adviser flags hidden liabilities in the target company. Both sides want speed. Neither wants surprises. The choice of acquisition structure – share deal or asset deal – will define the economics, the risk profile, and the post-closing obligations for years to come.

In a share deal, the buyer acquires the seller's ownership interest in the target spółka z ograniczoną odpowiedzialnością (private limited liability company, sp. z o.o.) or spółka akcyjna (joint-stock company, S.A.), inheriting all assets and liabilities by operation of law. In an asset deal, the buyer selects specific assets and contracts from the target, leaving unwanted liabilities behind. Polish corporate law, tax regulations, and registration requirements under the National Court Register (KRS) treat the two structures very differently. The right choice depends on liability exposure, tax efficiency, and transaction speed.

This guide walks through each structure step by step. It covers the legal mechanics, tax consequences, due diligence priorities, three business scenarios, common mistakes, and a practical checklist. The goal is to give buyers and sellers a clear framework before instructing counsel – and to flag where complexity tends to appear in Polish transactions.

What are the legal mechanics of each structure in Poland?

The starting point is ownership. In a share deal, the buyer takes title to shares or udziały (ownership interests in an sp. z o.o.). The target entity survives unchanged. All contracts, permits, licences, and liabilities transfer automatically. No counterparty consent is required unless a specific agreement contains a change-of-control clause. Registration with the National Court Register (KRS) reflects the new shareholder but does not create the transfer – the share transfer agreement does.

An asset deal works differently. The buyer and seller agree a schedule of assets: real property, equipment, intellectual property, receivables, contracts, and sometimes employees. Each category follows its own transfer formality. Real estate requires a notarial deed. Contracts require counterparty consent unless an assignment clause permits otherwise. Employees transfer under Kodeks pracy (Labour Code) provisions governing the transfer of an undertaking, giving employees the right to terminate within two months of being informed. The transaction closes in stages rather than in a single moment.

The Polish Financial Supervision Authority (KNF) becomes relevant where the target holds a regulated licence – banking, insurance, payment services, or investment management. A share deal in a regulated entity requires KNF approval before completion. An asset deal that excludes the regulated licence can sometimes avoid this requirement, though the buyer must then apply for a fresh licence, which takes considerably longer than an approval process.

Timeline differences are significant. A straightforward share deal in an sp. z o.o. can close in four to six weeks from signed heads of terms. An asset deal involving real property, multiple contract novations, and employee consultations typically takes three to five months. Buyers under time pressure often prefer share deals. Buyers with concerns about undisclosed liabilities often prefer asset deals – even at the cost of additional time.

How does the tax treatment differ between the two structures?

Tax is usually the decisive factor. The structures diverge sharply on three axes: stamp duty, VAT, and the step-up in asset values.

A share deal in a Polish sp. z o.o. attracts podatek od czynności cywilnoprawnych (civil law transaction tax, PCC) at a rate of 1% of the transaction value. This applies to the buyer. There is no VAT on a share transfer. The buyer inherits the target's existing tax bases – depreciation schedules, carried-forward losses, and historical cost of assets remain unchanged. This is efficient if the target's books are clean. It is a problem if the assets are substantially undervalued.

An asset deal is more complex. The transfer of a business as a going concern (przedsiębiorstwo) is VAT-exempt under Polish VAT legislation. However, if only selected assets transfer – not the enterprise as a whole – VAT applies at the standard rate of 23% on most assets. Real property transfers attract either VAT or PCC depending on the property's VAT status, and the interaction between these two taxes requires careful analysis before signing. The buyer gains a fresh depreciation base, reflecting the agreed purchase price. For asset-heavy targets, this step-up can generate material tax savings over five to ten years.

Corporate income tax (CIT) considerations also differ. A seller in a share deal may benefit from the participation exemption on capital gains if the holding period and ownership thresholds are met. In an asset deal, the seller recognises gain on each asset class separately, which can result in a higher aggregate tax cost. Sellers therefore typically prefer share deals. Buyers with long investment horizons often prefer asset deals for the depreciation benefit.

We secured a renegotiation of transaction structure that reduced the effective tax cost by over PLN 3m for a manufacturing acquirer in the Mazowieckie region (autumn 2025). The original share deal structure would have left the buyer with a substantially undervalued asset base and no depreciation uplift.

What does due diligence look like for each structure?

Due diligence scope follows liability exposure. Because a share deal transfers the entire legal history of the target, the buyer must investigate everything – tax, employment, environmental, regulatory, and litigation. A clean due diligence report is the buyer's main protection. Representations and warranties in the sale and purchase agreement (SPA) provide contractual recourse, but litigation to enforce them is costly and slow.

The KRS file is the starting point. It discloses the company's registered history, shareholder structure, board composition, and any pending registration proceedings. Polish law requires the KRS to be public, so this search costs nothing and takes minutes. What it does not show is off-balance-sheet risk, undisclosed related-party transactions, or historic tax positions taken aggressively.

Tax due diligence in Poland typically covers the last five years. The Polish tax authority (Krajowa Administracja Skarbowa, KAS) has a five-year limitation period for most assessments. Buyers should request tax clearance certificates and review any ongoing KAS audits. Transfer pricing documentation is a recurring issue in targets with foreign parent companies.

In an asset deal, due diligence narrows to the acquired assets and assumed contracts. Environmental liability, for example, stays with the seller if the contaminated land is not included in the schedule. This selectivity is the asset deal's main advantage. The buyer can ring-fence risk by excluding specific assets or liabilities from the perimeter. The discipline required is precise drafting of the asset schedule – vague descriptions create disputes at closing.

For buyers working with targets in regulated sectors, the Polish Financial Supervision Authority (KNF) file and any supervisory correspondence must be reviewed separately. Regulatory risk does not appear on the KRS and is often underweighted in standard due diligence checklists.

How do three business scenarios play out in practice?

Choosing between structures becomes clearer when mapped against specific business types. Three scenarios illustrate where each structure tends to work better.

Manufacturing business with real property. A foreign investor acquiring a Polish factory typically faces a choice between inheriting the target company (share deal) and acquiring the land, buildings, and equipment directly (asset deal). If the factory sits on land with historic contamination, the asset deal allows the buyer to exclude that land from the perimeter. If the factory holds valuable operating permits tied to the legal entity, a share deal preserves them without re-application. The deciding factor is usually the permit structure. Permits that cannot be transferred make the share deal the only viable path.

IT company with contracts and IP. For a Polish software house, the main value lies in customer contracts, source code, and employee know-how. A share deal transfers all of this automatically. An asset deal requires individual assignment of each contract and IP right, plus employee consultation under the Labour Code. Counterparty consent clauses in enterprise software agreements are common and can take weeks to obtain. Most IT acquisitions in Poland close as share deals for this reason. The buyer accepts the inherited liability risk in exchange for speed and certainty of contract transfer. See our analysis of technology sector structuring considerations in the context of AI Act high-risk classification and affected sectors.

Foreign investor entering a distressed target. Where the target has known liabilities – tax arrears, employment disputes, or pending litigation – the asset deal is the structurally cleaner choice. The buyer acquires the operational assets and leaves the liabilities with the seller's entity. This is common in pre-insolvency situations. The risk is that a transaction at undervalue may be challenged by the target's creditors under Prawo upadłościowe (Insolvency Law) provisions on avoidance of transactions. Pricing must reflect market value. For Ukrainian and CIS buyers navigating distressed acquisitions, our guide on red flags in Polish M&A for Ukrainian buyers covers the most common structural pitfalls.

We assisted a technology investor from Lower Silesia in restructuring a proposed asset deal into a partial share deal, preserving three key operating licences while carving out legacy litigation exposure through an escrow mechanism (spring 2026).

What are the most common mistakes when choosing a structure?

Most errors arise from deciding on structure too early – before due diligence identifies the actual risk profile of the target. The following mistakes appear repeatedly in Polish transactions.

  • Assuming a share deal is always faster. Change-of-control clauses in key contracts can delay a share deal by weeks if counterparty consent is required.
  • Underestimating PCC exposure in asset deals. When assets transfer individually rather than as an enterprise, PCC applies to each category separately, and the aggregate cost can exceed the 1% share deal rate.
  • Overlooking employee transfer obligations. Both structures trigger Labour Code notification requirements. Failure to notify employees within the statutory period exposes the buyer to claims.
  • Treating the KRS as a complete record. The register shows legal structure, not commercial risk. Off-balance-sheet liabilities and undisclosed agreements do not appear.
  • Neglecting to check for KNF-regulated activities. A target that processes payments or holds client funds may be conducting regulated activity without a formal licence – a liability that transfers in a share deal.

Structure selection also interacts with financing. If the buyer is using acquisition finance, the lender's security requirements may favour one structure over the other. A bank taking security over shares has a simpler enforcement path than one taking security over a mixed asset pool. Buyers should align structure selection with their financing term sheet before committing to a legal structure in the letter of intent.

The interaction between structure and post-closing integration is also underweighted. An asset deal that transfers only selected employees creates a split workforce, with some employees remaining in the seller's entity. Managing that split during transition requires detailed planning. For investors comparing Polish corporate vehicle choices at entry, our sp. z o.o. vs S.A. decision matrix sets out the structural options before acquisition planning begins.

Timing of tax advice is the single most common failure point. Buyers who engage tax counsel after signing heads of terms are often locked into a structure that was chosen for the wrong reasons. Tax analysis should inform the letter of intent, not follow it.

What should buyers prepare before instructing counsel?

A structured preparation process reduces advisory time and transaction cost. The checklist below applies to both share deals and asset deals, with items flagged where the two structures diverge.

  • Obtain the target's KRS extract and shareholder register. Verify that the seller has unencumbered title to the shares or assets being sold.
  • Identify all licences, permits, and regulatory approvals held by the target. Confirm whether each is transferable or entity-specific.
  • Request the last three years of audited financial statements and the most recent management accounts. Flag any KAS audit correspondence.
  • Map all material contracts for change-of-control and assignment clauses. This determines whether counterparty consent will be needed.
  • Confirm the employee headcount and review any collective agreements. The Labour Code requires written notification of employees at least 30 days before a transfer of undertaking.

Buyers who complete this preparation before the first advisory meeting reduce due diligence timelines by two to three weeks. Sellers who prepare a vendor due diligence report in advance reduce buyer uncertainty and typically achieve better pricing. Both sides benefit from resolving structural questions before the letter of intent is signed, not after.

Frequently asked questions

Q: Can a buyer in a share deal limit liability for the target's historic tax debts?

A: Contractual protection through representations and warranties in the sale and purchase agreement is the primary tool. The buyer can also negotiate an escrow arrangement, where a portion of the purchase price is held for 12 to 24 months to cover warranty claims. Tax indemnities covering specific identified risks provide additional protection. However, these are contractual remedies only – Polish tax law allows KAS to assess the target entity regardless of what the SPA says. Structural protections supplement but do not replace thorough tax due diligence.

Q: How long does a typical Polish M&A transaction take from letter of intent to closing?

A: A share deal in a mid-market Polish sp. z o.o. with no regulatory approvals typically closes in eight to twelve weeks from signed letter of intent. An asset deal involving real property and multiple contract novations takes four to six months. Transactions requiring KNF approval add a further three to six months depending on the regulator's current workload. These timelines assume no material issues arise in due diligence. Contested items – historic tax positions, environmental risk, pension liabilities – extend timelines unpredictably.

Q: Is it possible to combine elements of both structures in a single transaction?

A: Yes, and hybrid structures are common in Polish practice. A buyer might acquire the operating company via a share deal while simultaneously acquiring a property-holding subsidiary via an asset deal. Alternatively, the share deal can be accompanied by a pre-closing restructuring in which the seller hives off unwanted liabilities into a separate entity before completion. These structures require careful sequencing and tax analysis. The risk is that a hive-down executed too close to completion may be recharacterised by KAS as lacking commercial substance.

Choosing between a share deal and an asset deal is rarely a binary decision. The right answer depends on the specific target, the buyer's risk appetite, the tax position of both parties, and the regulatory environment. Getting the structure right at the outset is far less costly than correcting it after signing.

Every acquisition in Poland involves a specific combination of corporate, tax, employment, and regulatory issues. The consequences of the wrong structure – inherited tax liability, loss of a key licence, or an unenforceable contract transfer – can be irreversible once the transaction closes.

To receive an expert assessment of your proposed acquisition structure in Poland, contact info@kordeckipartners.com.

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 structuring, corporate transactions, 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.