Merger, demerger or conversion? The right tool for a Polish subsidiary

A Polish structure rarely stays tidy. A group buys a business and ends up with three companies where one would do. A single company grows until one risky line puts the rest at risk. A vehicle set up as a limited partnership (sp.k.) years ago, for reasons that made sense then, now sits awkwardly on the tax return. Head office wants it fixed and asks the obvious question: do we merge, split, convert or sell? That is almost the wrong question - or rather, the right answer never starts there.

Start with the goal, not the tool

Foreign boards tend to arrive with a technique already in mind and ask which one to use. In practice the technique is not a free choice. Polish law offers five instruments, and each answers a different question: a merger (połączenie), a demerger (podział), a conversion (przekształcenie), a transfer of a business - the asset deal - and a transfer of shares (zbycie udziałów) - the share deal; liquidation (likwidacja) removes a company altogether. None of them competes with the others across the board. Set out what you actually want to achieve and the field usually narrows to one tool, occasionally two.

The map below runs from the goal to the tool. Read down the first column until you find your situation.

The rest of this article takes the four rows in turn, and then the one idea that runs underneath all of them.

“We have too many companies”

This is the classic case: a group that has been in Poland for a few years is carrying a company that costs an audit, a set of accounts and a board meeting a year for the privilege of existing. Two tools remove it - a merger or a liquidation - and here you genuinely choose.

A merger folds the company into another entity in the group. That entity is not always the parent: it can be a sister company or, less often, a subsidiary - the direction follows the structure, not a rule. On the merger date the acquired company’s rights and obligations pass to the acquiring company by universal succession (Art. 494 § 1 of the Commercial Companies Code, Kodeks spółek handlowych, “KSH”), and the acquired company is dissolved without liquidation and removed from the register (Art. 493 § 1 KSH). Where the parent already owns 100%, the procedure is a simplified merger; between commonly-owned companies it can run without issuing new shares; either way, how long it takes depends more on the preparation - tax, contracts, accounts - than on the statutory steps.

Liquidation is the formal route. The liquidators announce the opening of liquidation and call creditors, who have three months to file their claims (Art. 279 KSH); assets cannot be distributed to shareholders before six months have passed from that announcement (Art. 286 § 1 KSH); and the tax office is notified at the end (Art. 290 KSH).

In plain terms: a merger moves the company’s assets and contracts into another company automatically; liquidation empties the company and strikes it off. When something of value still runs through the company - live contracts, permits, employees - a merger is usually faster and cleaner, because nothing has to be renegotiated or re-signed. When the company is an empty shell, liquidation is the simpler wind-down.

“We need to move or ring-fence a business line”

This is where the real choice lives. Three tools can move a business line out of a company:

• a demerger - either by spin-off (wydzielenie, where the shareholders of the company being divided take the new shares) or by separation (wyodrębnienie, where the company being divided itself takes them; available since 2023) (Art. 528–529 KSH);
• a contribution of a going concern - the business is contributed in kind (aport) to another company in exchange for its shares;
• an asset deal - a transfer of the enterprise (przedsiębiorstwo) or of an organised part of it (Art. 55¹–55⁴ of the Civil Code, Kodeks cywilny, “KC”).

The tools here will be familiar in outline - a demerger and a business transfer exist in most of the jurisdictions the group operates in, and the demerger is broadly harmonised across the EU. What is worth pinning down is the Polish detail, because that is where the routes diverge: which demerger variant is available and how each is treated, what form and registrations each needs, what the registry court will and will not reopen, and how the tax analysis gates the choice. The one structural point to settle early is the succession model - a demerger moves the allocated business by universal succession (Art. 531 KSH), while an asset deal or a contribution moves it item by item, with each material consent back on the table - because that is the trade-off you are weighing when a carve-out could go either way. The spin-off versus separation choice and what actually transfers each have their own guide.

For precision: an organised part of an enterprise (zorganizowana część przedsiębiorstwa, “ZCP”) - in effect a going concern - is primarily a tax concept. Whether a given set of assets qualifies as one is a question for the tax adviser, and it shapes the tax treatment of every route in this section. Treat it as a signpost, not something to settle on company law alone.

“We need a different legal form”

Sometimes the structure is not too big or too tangled - it is simply the wrong shape. A group is still holding a limited partnership (sp.k.) set up when partnerships were tax-transparent, and the tax logic has since changed. Or a sp. z o.o. has grown to the point where a joint-stock company (S.A.) would suit it better - usually to run an employee share plan, occasionally with an eye on a future listing.

The tool is a conversion (przekształcenie, sometimes rendered “transformation”). A conversion keeps the same legal entity: the converted company holds all the rights and obligations of the company as it was before (Art. 553 § 1 KSH), and it remains the holder of the permits, concessions and reliefs granted before the conversion, unless a statute or the decision granting them says otherwise (Art. 553 § 2 KSH). It becomes the new form on the day it is entered in the register (Art. 552 KSH).

In plain terms: same company, new form. Contracts, bank accounts and - usually - permits carry on untouched. That continuity is exactly why the tool is a conversion and not “set up a new company and move everything across”: there is nothing to transfer. The two you will meet most often are a sp. z o.o. converting to or from an S.A., and a partnership converting into a sp. z o.o.

“We want a whole company in or out of the group”

A share deal - a transfer of shares (zbycie udziałów) - is not a reorganisation in the KSH sense, but an intra-group transfer of a subsidiary’s shares belongs on the map, because it is the other way to change the shape of a group from the inside: moving a company to a different holding entity, or bringing it under a Polish one. (A third-party sale or purchase of a company - an M&A share deal, with its diligence, warranties and price mechanics - is a different exercise, and a topic for another day.)

An intra-group transfer of shares in a sp. z o.o. is made in written form with notarised signatures (Art. 180 § 1 KSH), and the articles of association may make it subject to the company’s consent (Art. 182 KSH). A share deal moves the container, not the contents: the company keeps its assets, contracts and permits, and only its owner changes - subject to any change-of-control clauses in its contracts, which exist in every jurisdiction. So it is the tool when the point is to move a company whole, not to lift one business line out of it. (Where a group does want to sell a single line, the two ideas can be combined: demerge the line into a new company first, then transfer that company’s shares.)

The one distinction worth holding onto: universal vs singular succession

Strip away the labels and almost everything above turns on one axis.

• Merger and demerger - universal succession. A defined set of assets and obligations passes by operation of law, on a single date (Art. 494 § 1, Art. 531 KSH).
• Conversion - continuity. There is no succession at all: it is the same entity in a new form.
• Asset deal and contribution - singular succession. Each item moves on its own terms, and third parties keep their say.

This is the axis to settle first whenever a carve-out could be done either way: universal succession buys continuity at the price of the statutory procedure; singular succession keeps the transaction flexible but puts every material consent back on the table.

For precision: universal succession is not absolute. Some permits do not pass even in a merger or demerger, and a contract with a change-of-control or assignment clause can still need attention. It removes the default need for consent; it does not override everything the parties agreed. What transfers, and what doesn’t takes this apart.

What about cross-border?

The same questions apply when the counterparty entity is abroad - merging a Polish company into a foreign parent, or moving a Polish company out of Poland - with one extra layer. The cross-border regime rebuilt in 2023 adds a registry-court certificate of compliance before the move and, as a gate, an opinion from the head of the National Revenue Administration (Szef KAS). The logic that picks the tool is unchanged; the timeline and the paperwork are not.

What this means for you

Decide the goal first, in one sentence: reduce the number of entities, carve out or ring-fence a business, change the form, or move ownership. Only two of those give you a real either/or - removing a company, and moving a business line - and both turn on the same axis, universal versus singular succession.

In my practice the mistake is almost never picking the wrong statutory route between a merger and a demerger; clients do not agonise over that. It is assuming the Polish tools work like the equivalents they know from home, or from the other markets where the group operates - and not checking how the Polish reorganisation rules actually run before committing to a plan. Get the goal and the succession question right, and the tool is very nearly chosen for you.

Watch out

• Tax drives more of this than company law does. Each route has a different tax profile, and the CIT-neutrality of a merger or demerger is conditional, not automatic - settle the tax analysis before the corporate plan is drafted. Confirm it with your Polish tax adviser; I am an advocate, not a tax adviser.
• “Universal succession” is a feature, not a magic wand. Check change-of-control and assignment clauses in the contracts that matter, and check whether key permits actually pass.
• The statutory minimums are floors, not estimates. A liquidation cannot distribute assets before six months, and real timelines depend on what the registry court checks and on its workload on top of that.
• A cross-border move is not a domestic one with a foreign address. The 2023 rules added a tax-authority opinion that can add months.

Next steps

1. Write the goal down in one sentence.
2. Match it to a tool using the map above.
3. Check whether you are in one of the two genuine-choice situations; if so, decide on the universal-versus-singular-succession axis.
4. Get the tax analysis before anyone drafts a plan.
5. Read the route-specific guide (linked above) for the timeline and what the parent has to sign.