Demerger and partial asset contribution in Luxembourg

Demerger and partial asset contribution in Luxembourg: what differs?

Demerger and partial asset contribution in Luxembourg are two neighbouring but distinct operations: a demerger divides a pre-existing company into two or more companies and makes the divided company disappear, whereas a partial asset contribution transfers a single autonomous branch of activity to another company, the contributing company continuing to exist.

A demerger is the operation by which a pre-existing undertaking or company is divided into two or more distinct and legally independent companies, the divided company disappearing in the operation. It operates by absorption, by incorporation of new companies, or by a combination of the two procedures. In tax terms, the same operation is described as the transfer by a capital company of its entire estate, with the disappearance of the divided company, to two or more new or existing capital companies.

A partial asset contribution, by contrast, consists of contributing only an autonomous branch of activity to another company, new or pre-existing, with the survival of the contributing company. In company law, the contribution of a branch of activities is the operation by which a company transfers, without dissolution, to another company a branch of its activities together with the liabilities and assets attached to it. The most visible practical difference concerns who receives the shares: in a demerger, the shareholders of the divided company receive shares in the beneficiary companies; in a partial contribution, the contributing company itself does.

We regularly see files where the director speaks of "spinning off a branch" while describing a partial asset contribution, and where the drafted project takes on the formalities of a demerger although the original company is not meant to disappear. Settling that question before the first draft avoids redoing the deed, which is the costliest mistake in this type of file. The operation also differs from a merger by absorption, which groups together instead of dividing.

What procedure and what timing does a demerger follow?

The procedure for a demerger in Luxembourg turns on a one-month period: the draft terms of division are filed with the Trade and Companies Register for publication at least one month before the decision of the general meeting. The documents stay available to shareholders at the registered office throughout that month, and the minutes of the meeting are drawn up in notarial form.

That period runs twice and it is what fixes the date of the deed, not the other way round. The draft terms of division must be filed with the Trade and Companies Register with a view to publication in the Electronic Register of Companies and Associations at least one month before the decision of the meeting on the division. In parallel, shareholders have the right to inspect at the registered office, at least one month before the meeting called to rule on the draft, the annual accounts and the management reports of the last three financial years of the companies concerned.

One further document is required where the accounts are old, and it is the one timetables forget. An accounting statement drawn up at a date no earlier than the first day of the third month preceding the date of the draft terms must be made available where the latest annual accounts relate to a financial year ended more than six months before that date. In other words, a division decided in September on the basis of annual accounts closed on 31 December calls for an interim statement, and that statement must exist before the date of the draft, not before the meeting.

Two reports then follow. The report on the terms of the division is drawn up by the management bodies and addressed to the shareholders of the companies concerned. A report is in addition drawn up for each company by an approved statutory auditor, whose involvement is mandatory, the management bodies being free to agree on having a single independent expert appointed by the president of the district court. The shareholders and holders of securities of the companies concerned may nonetheless waive those reports by unanimous decision. The minutes of the meeting deciding the division are finally drawn up in notarial form.

What must the draft terms of division contain?

The draft terms of division in Luxembourg state the legal form, name and registered office of the participating companies, the share exchange ratio and any cash payment, the terms of delivery of the securities and the date of entitlement to profits. They also carry the precise description and allocation of the assets and liabilities transferred to each beneficiary company, as well as the allocation of securities among the shareholders of the divided company.

The item that takes the most work is the precise allocation. The draft must describe and allocate the assets and liabilities to be transferred to each of the beneficiary companies, then state the allocation to the shareholders of the divided company of securities in the beneficiary companies together with the criterion on which that allocation is based.

Luxembourg law then provides for what happens when the allocation is silent, and that default rule deserves to be read before signing. Where an asset is not allocated in the draft terms and the interpretation of the draft does not make it possible to decide on its allocation, that asset is allocated among all the beneficiary companies in proportion to the assets allocated to each of them in the draft. Where it is a liability that is not allocated, each of the beneficiary companies is jointly and severally liable for it.

The consequence is easy to state and hard to undo: an omission on the asset side is shared pro rata, an omission on the liability side turns into joint and several liability. That is why the inventory underlying the draft is not a formatting exercise but the central piece of the file, and why we ask for it closed and reconciled against the accounts before the first draft is written, not during.

How far does the liability of the beneficiary companies go?

In a demerger in Luxembourg, each beneficiary company is jointly and severally liable for the transferred liabilities, but that liability is limited to the net assets allocated to it. It only comes into play towards a creditor or bondholder of the divided company who has not obtained satisfaction from the company to which the obligation had been transferred.

The mechanism therefore has two tiers. The creditor first turns to the beneficiary company designated by the draft as the holder of its debt. If it does not obtain satisfaction, it may turn to the other beneficiary companies, each remaining bound within the limit of the net assets it received. An unbalanced allocation, concentrating the debts on one side and the assets on the other, therefore does not shelter the beneficiaries: it organises the recourse instead.

There is a way out, and it is express. The dissolved companies and their shareholders may be exonerated from that liability by an express clause inserted in the draft terms of division and in the deed of division, duly published in the Electronic Register of Companies and Associations.

Creditors also have a remedy of their own. Creditors and bondholders of the companies taking part in the division whose claim predates the publication in the Electronic Register of the deeds recording the division may apply for security for their claims, provided they establish the required conditions, and the application must be made within two months to the district court for the registered office of the debtor company. Nullity of the division, finally, may only be pronounced by the court, and the action is open for six months only after publication. Bear in mind that it is publication in the Electronic Register that makes the operation effective against third parties.

When do capital gains qualify for a tax deferral?

In Luxembourg, the latent capital gains released by a division or a partial asset contribution may qualify for a deferral of taxation, not an exemption. The deferral requires that the book values of the transferred items be maintained after the operation and that the beneficiary company be a fully taxable resident capital company.

For a division of a capital company with the disappearance of the divided company, the beneficiary company qualifies for the deferral on four conditions: being fully taxable, maintaining after the operation the book values of the transferred assets and liabilities, receiving the entire estate of the divided company that disappears, and issuing new securities to the shareholders of the divided company in proportion to their holdings. Where the book values are maintained at the date of the contribution, the beneficiary company is deemed to have acquired the transferred items on the date the contributor itself acquired them: the holding period continues, it does not restart.

For a partial asset contribution between capital companies, the contributing company that transfers only part of its activities and carries on operating the remainder qualifies for the deferral if it is a capital company resident in Luxembourg, if the company receiving the contribution is a capital company resident in Luxembourg or established in a Member State of the European Union and covered by the directive on mergers and divisions, and if the contribution covers an autonomous part of the business.

That last condition is the one that gets lost along the way: a branch with no customer base of its own, no dedicated staff and no distinct operating means is not an autonomous part, whatever the draft says.

At shareholder level, the exchange of securities falls under a separate regime. Subject to conditions, capital companies may exchange their holdings for securities, existing or newly issued, of another company in tax neutrality: the acquisition price and date of the securities received match those of the securities given up, and the latent gain is carried over to the new securities, taxable on their later disposal. An exchange against cash or other assets does not benefit from that neutrality, although a cash payment of up to 10 % of the nominal value of the securities received is accepted.

The fate of the tax losses of the divided company is not settled by the pages consulted: the question is to be put to the tax office before the draft, and our article on tax loss carry-forward sets out the general framework.

Contribution of a branch: should you opt into the demerger regime?

A contribution of a branch of activities in Luxembourg transfers the assets and liabilities by operation of law only if both companies decide so. The company contributing the branch and the company receiving it may agree to submit the operation to the provisions on divisions: the contribution then automatically transfers the assets and liabilities attached to the branch.

Without that option, the contribution stays an ordinary-law operation, and each item follows its own transfer regime: contracts are assigned one by one, security interests are re-registered, receivables are notified. Opting into the demerger regime replaces that piecemeal work with an automatic transmission, at the price of the formalities described above, one-month period and notarial deed included. The choice therefore turns on the number and nature of the contracts to be taken over, not on the cost of the deed.

Two conditions otherwise frame a transfer of business assets, and the first is often discovered late. The transfer is only possible if the inventory shows a surplus of assets: a branch whose attached debts exceed its assets cannot be transferred this way. The rules on divisions then apply to the transfer where the parties are companies with legal personality and the shareholders receive securities in the company acquiring the assets.

Two consequences remain to be handled on the same timetable as the deed. On the VAT side, the transfer, in whatever form and on whatever basis, of a total or partial universality of assets to another taxable person is treated neither as a supply of goods nor as a supply of services: the transferee is deemed to continue the person of the transferor, who remains bound to declare and pay the taxes that became due before the transfer. On the employment side, the transfer-of-undertaking rules of articles L.

127-1 to L. 127-6 of the Labour Code, which transpose Directive 2001/23/EC, apply to a transfer resulting in particular from a division: the employment contracts attached to the transferred entity pass to the new employer by the mere effect of the law, without formality. The order of magnitude of fees for such a file is set out in our pricing schedule; what makes it vary is almost never the deed, it is the quality of the opening inventory.

Sources and verification

Written for Financial Services Luxembourg and reviewed before publication by Mickaël LOC, licensed accountant (authorisation 10077274). The documentary review dated 5 October 2026 relies on the accessible sources identified below. Points not confirmed against primary texts are explicitly identified in this section.

The sources consulted, all read on 5 October 2026, are the following. On Guichet.lu, the page "Company divisions" gives the definition of a division and its three routes; the content of the draft terms of division, including the precise description and allocation of assets and liabilities and the criterion for allocating securities to shareholders; the default rules on unallocated assets and liabilities; the filing of the draft with the Trade and Companies Register for publication in the Electronic Register at least one month before the decision of the meeting;

the right of shareholders to inspect at the registered office, at least one month before the meeting, the draft, the annual accounts and the management reports of the last three financial years, as well as the interim accounting statement required where the latest annual accounts relate to a year ended more than six months before the date of the draft; the report of the management bodies and the mandatory report drawn up for each company by an approved statutory auditor, the possible appointment of a single independent expert by the president of the district court and the unanimous waiver;

the notarial deed; the joint and several liability of the beneficiary companies limited to the net assets allocated and its trigger; the express exoneration clause published in the Electronic Register; the creditors' application for security within two months before the district court; the action for nullity limited to six months and reserved to the court; and the effectiveness against third parties by publication alone.

The page "Transfer of business assets" gives the definition of the contribution of a branch of activities, the possibility for both companies to submit the operation to the provisions on divisions with transfer by operation of law as a result, the surplus-of-assets condition in the inventory, and the application of the rules on divisions where the parties are companies with legal personality.

The page "Deferred taxation of capital gains in the event of a division or a partial transfer of assets" gives the tax definitions of the two operations, the conditions of the deferral in each case, the deferral available to a resident taxpayer making the contribution, the presumption that the transferred items were acquired on the date of acquisition by the contributor where book values are maintained, and the regime of the exchange of securities, with the cash payment accepted up to 10 % of the nominal value of the securities received.

The questions and answers of the Labour and Mines Inspectorate on transfers of undertakings attach a division to articles L. 127-1 to L. 127-6 of the Labour Code and to Directive 2001/23/EC. The amended law of 12 February 1979 on value added tax gives the treatment of the transfer of a total or partial universality of assets to another taxable person and the transferee continuing the person of the transferor.

Finally, the amended law of 10 August 1915 on commercial companies carries the chapter on divisions, and the amended law of 4 December 1967 on income tax carries the deferral regimes relied on here, in particular those of its articles 22bis, 59 and 170.

Four points could not be verified in their primary source and are therefore not asserted here. The full text of the sources: the domains guichet.public.lu, legilux.public.lu, impotsdirects.public.lu, pfi.public.lu and itm.public.lu are blocked by the network proxy of our editorial environment, and these pages were read through indexed extracts using a search restricted to official domains; the statements above reproduce those extracts without extrapolation.

The exact numbering of the articles of the chapter on divisions in the coordinated law of 1915: the rules quoted are those stated by Guichet.lu and by the law, but we do not attach each rule to an article number we have not read. The fate of the tax losses of the divided company: none of the pages consulted addresses it, and we do not infer it from the merger regime.

And the figure capping the cash payment specific to the draft terms of division, together with the registration duty treatment of real estate included in the transferred estate: the 10 % quoted here is the one attached to the neutrality of the exchange of securities, and the registration duty question has not been cross-checked. These points can be verified in the coordinated text of the law of 10 August 1915 and in that of the law of 4 December 1967 on legilux.public.lu and impotsdirects.public.lu, on the page "Company divisions" of guichet.public.lu, and with the competent tax office for an individual file.

This article sets out the state of the law at the date of publication and does not constitute personalised legal or tax advice: the choice between a division and a partial asset contribution, the merits of opting into the demerger regime, the autonomous character of the transferred branch and the conditions of the tax deferral depend on the legal form of the companies concerned, on the composition of their assets and liabilities, on their shareholding structure and on their tax history. Report an error to contact@financialservices.lu: the correction is dated in the article.