Taxation of a Business Sale in Luxembourg: What Tax Applies, With or Without a Holding Company?

September 17, 2026

Are you planning to sell your business, in the coming months or in a few years’ time? How much will actually end up in your pocket after tax?The answer depends in particular on your country of residence, how long you have held your shares and how you hold them, directly or through a holding company. While a holding company can, under certain conditions, allow the capital gain to be exempt at the time of the sale, it is not always the preferred solution.

The principle: what is taxed?

When shares or units are sold, it is the capital gain that is taxable, namely:

Taxable capital gain = sale price – acquisition price (or cumulative contributions) – disposal costs

The sale itself has no immediate tax impact at the level of the company being sold. Taxation is assessed at the level of the seller of the shares: you personally if you hold them directly, or your holding company if you hold them indirectly.

Case 1: you hold your business directly

When you sell the shares of your business directly, the sale proceeds are paid to you personally. The applicable tax regime depends in particular on your country of residence and your tax rate, which is determined on the basis of your total income.

IN LUXEMBOURG

The Luxembourg regime distinguishes between cases according to the holding period and the size of the shareholding.

You have held more than 10% of the share capital for more than 6 months

This is the typical case of the main owner-manager resident in Luxembourg. A shareholding is considered “substantial” where you, alone or together with your spouse/partner and minor children, have held more than 10% of the share capital, directly or indirectly, at any time during the five years preceding the sale.

The calculation is then made in three steps. First, the acquisition price is revalued to account for inflation between the date of acquisition (or incorporation) and the date of sale, using the coefficients set out in Article 102 of the Luxembourg Income Tax Law (LIR): this revaluation reduces the taxable gain accordingly. The resulting capital gain is then reduced by an allowance of €50,000 (€100,000 for a couple taxed jointly). This allowance is renewed every ten years, provided it has not already been used for a sale of shares or real estate during the previous decade. Finally, the balance (capital gain less allowance) is taxed at the half-rate, i.e. half of your overall income tax rate. This overall rate is capped at 45.78%, i.e. 42% x 1.09 (42% top bracket plus the 9% employment fund surcharge), reached from €234,870 of income: the half-rate therefore never exceeds 22.89%. The 1.4% dependency insurance contribution is added on top, bringing the maximum tax burden to 24.29%.

You have held 10% or less for more than 6 months

No tax is due when you sell a shareholding of 10% or less in an SME, provided you have held it for more than 6 months. The capital gain is exempt as long as the shares form part of your private assets. This is often the case for a minority shareholder who came on board a few years earlier and can then receive the full sale price without any tax on the gain.

You have held your shares for less than 6 months

Where a shareholding has been held for less than 6 months, the capital gain is treated as speculative and taxed at the full progressive rate. The theoretical maximum rate can then reach 47.18% (42% top bracket x 1.09 employment fund surcharge + 1.4% dependency insurance contribution).

A worked example

Consider an owner-manager resident in Luxembourg, married and taxed jointly, who incorporated his company in 2016 with share capital of €30,000, holds 100% of it directly, and sells his shares in 2026 for €1,000,000.

The acquisition price is first revalued: with the 1.22 coefficient applicable to a 2016 incorporation (Article 102, paragraph 6 LIR), the €30,000 becomes €36,600. The capital gain therefore amounts to €963,400. As the couple has not used its allowance in the last ten years, the taxable base comes to €863,400, taxed at the half-rate: roughly €210,000 in tax, or 21% of the sale price.

Calculation details:

In the top bracket, income tax is 42% of taxable income

Income tax: 42% x 863,400 x 1.09 (employment fund surcharge) / 2 (half-rate) = €197,632.26

Dependency insurance: 1.4% x 863,400 = €12,087.60 (calculated on the taxable base, not on the tax)

Total: €209,719.86

The larger the capital gain, the less weight the allowance and the revaluation of the acquisition price carry, and the closer the effective tax rate gets to the theoretical ceiling of 24.29%.

SPECIAL CASE OF CROSS-BORDER WORKERS: OWNER-MANAGERS RESIDENT IN BELGIUM OR FRANCE

If you run a Luxembourg company but live in Belgium or France, the capital gain is in principle taxable in your country of residence, not in Luxembourg, under the applicable international tax treaties. There are some exceptions and the exact provisions of these treaties should be checked: this is notably the case for real estate-rich companies, the sale of which may remain taxable in the country where the properties are located.

Belgian resident: a particularly favourable regime

For a Belgian resident directly holding a shareholding of at least 20% (the threshold applies to the shareholding held, not necessarily to the portion sold): the first €1 million of capital gain is exempt (less any exemptions already used during the previous four tax periods), with the excess taxed in bands: 1.25% from €1 million to €2.5 million, 2.50% from €2.5 million to €5 million, 5% from €5 million to €10 million and 10% above that. A key point: capital gains accrued up to 31 December 2025 in principle remain outside the scope of the tax, and only the gain generated since that date is caught. For a sale in the next few years, the actual tax burden will therefore often remain moderate.

For unlisted shares, the value at 31 December 2025 must be determined using the methods provided for by law, including equity plus four times the EBITDA of the last financial year closed before 1 January 2026. An alternative valuation may also be prepared no later than 31 December 2027 by an IRE-registered company auditor or an ITAA-certified accountant, other than the company’s usual adviser.

For a seller holding less than 20%, the general regime applies, with a 10% tax rate and a basic annual exemption of €10,000 for 2026 income (tax year 2027). Unlike in Luxembourg, the acquisition price (or the reference value at 31 December 2025) is not revalued for inflation.

These rules apply to sales falling within the normal management of private assets, outside any professional activity. Transactions outside this scope (speculative transactions) and sales to a company controlled by the seller or certain close relatives fall under separate regimes, which may result in taxation at 33%.

French resident: the flat tax, and specific levers

In France, the capital gain is in principle subject to the 31.4% flat tax (prélèvement forfaitaire unique) (12.8% income tax + 18.6% social levies). However, a cross-border owner-manager escapes most of these social levies: as a member of the Luxembourg compulsory social security scheme, he is exempt from CSG and CRDS under EU law and remains liable only for the 7.5% solidarity levy. His capital gain is then taxed at around 20.3% (12.8% + 7.5%) instead of 31.4%, a point to be confirmed by a French adviser in light of his social security affiliation. Unlike Luxembourg, France also makes no provision for revaluing the acquisition price for inflation: the capital gain is therefore calculated on the basis of the historical acquisition price.

The Exceptional Contribution on High Incomes (CEHR) is added where the reference taxable income exceeds €250,000 for a single person or €500,000 for a couple. Its rate is 3%, rising to 4% on the portion above €500,000 or €1 million respectively.

From the same thresholds, the Differential Contribution on High Incomes (CDHR) may also apply where the household’s effective tax rate, determined under the specific rules of this contribution and excluding social levies, is below 20%. In some situations, the total burden including social levies can thus approach 38.6% (20% for income tax and contributions, the CDHR floor, plus 18.6% social levies). For a cross-border owner-manager exempt from CSG and CRDS, this ceiling falls to around 27.5% (20% + 7.5%). These rates are, however, given for guidance only: the actual impact of the CDHR depends in particular on the make-up of the tax household, other income received and the specific treatment applicable to exceptional income.

Levers are available:

the fixed €500,000 allowance on capital gains realised up to 31 December 2031 (for income tax only, not social levies) for an owner-manager retiring (subject to conditions, including: actual management for 5 years, holding at least 25% of the share capital and retiring within 2 years of the sale); and
the contribution-and-sale mechanism (Article 150-0 B ter of the French General Tax Code), which allows taxation of the capital gain to be deferred by contributing the shares to a holding company before the sale. This deferral is, however, conditional: if the holding company sells the shares within three years of the contribution, it must reinvest at least 70% of the sale proceeds in an economic activity within three years, failing which the tax becomes payable.

Case 2: you hold your shares through a Luxembourg holding company

When you hold the shares of your business through a Luxembourg holding company (e.g. a Sàrl or an SA), it is the holding company that can sell the business and receive the sale price. Under certain conditions, the holding company is exempt from tax on the capital gain realised.

The capital gain exemption

A holding company selling a shareholding is exempt from corporate income tax (IRC) and municipal business tax (ICC) on the capital gain if:

it holds at least 10% of the share capital of the company sold, or a shareholding acquired for at least €6 million; and
it has held this shareholding for an uninterrupted period of at least 12 months or, in the event of a partial sale before the end of that period, it retains a shareholding of at least 10% of the share capital, or with an acquisition price of at least €6 million, until the end of that period; and
the company sold is fully taxable or subject to a comparable tax, which is generally the case for a Luxembourg SME incorporated as an SA or SARL and subject to the standard tax regime.

When these conditions are met, the holding company pays no tax on the capital gain and can retain the full sale proceeds.

Otherwise, the capital gain is treated as ordinary profit of the holding company and is subject to corporate tax, i.e. 23.87% in Luxembourg City in 2026.

One caveat, however: if the holding company has already obtained tax deductions in connection with this shareholding, it “gives them back” at the time of the sale. Example: your holding company borrowed to buy the shareholding and, over the years, deducted €200,000 of interest from its taxable profit. It now sells the shareholding with a capital gain of €1 million: the exemption is limited to €800,000 (the first €200,000 is added back to offset the deductions already obtained).

Put simply: you cannot take the benefit twice, deducting expenses yesterday and exempting the full gain tomorrow, on the same shareholding.

What to do next with the cash in the holding company?

Once the sale price has been received, this cash can be used in three ways, which can be combined:

Reinvest without immediate (personal) taxation. The cash can fund a new acquisition, real estate or an investment portfolio, without the capital gain having been taxed along the way. For entrepreneurs who want to move straight on to a new project or build up an investor’s portfolio, this is a decisive argument: you reinvest 100% of the sale price, whereas direct ownership taxed at the full 24.29% rate would have left only about 76%.
Pay yourself income, as and when needed. This is the practical question every seller eventually asks: “and how do I live?”. The holding company offers several exit routes, with very different tax treatments:

dividends: for an owner-manager resident in Luxembourg, a 50% exemption applies, giving a maximum tax rate of around 23.59% ([42% *1.09 + 1.4%] /2), which makes this the natural route for large amounts;
a director’s salary, if you carry out a genuine activity within the holding company (managing shareholdings, new investments): subject to social security contributions, but it maintains your pension rights and social cover. For a 50-year-old seller who wants to keep contributing until retirement, this is a factor not to be overlooked;
in the longer term, if needed, the liquidation surplus once the structure has served its purpose, treated for tax purposes as a sale (half-rate for a substantial shareholding).

You can thus manage your personal taxation over time, adjusting the mix of channels to your actual needs, rather than bearing the full burden in the year of the sale.

Pass on wealth: the holding company is a natural vehicle for organising the family transfer of the wealth generated by the sale.

A holding company is not always the right answer

Before going further, a candid point that is too rarely made: if your goal is to pocket the sale price and enjoy it, a holding company will not do much for you.

Do the maths. Held directly, as a Luxembourg resident, your capital gain is taxed at a maximum of around 24.29%, after the allowance. Through a holding company, the capital gain is indeed exempt at company level, but to have the money personally, you will need to pay yourself dividends, taxed at up to around 23.59%. In the end, the difference is often marginal, and you will have added incorporation, accounting and management costs, as well as an extra layer of complexity.

A holding company does not eliminate personal tax: it defers it. It therefore only makes sense in three situations: you intend to reinvest a significant part of the proceeds, you want to spread your income over time, or the sale is part of a wealth transfer strategy. If you simply want to cash in and move on, direct ownership is the simplest solution.

So, should you set up a holding company before selling?

If your aim is reinvestment or wealth transfer, this is a question to ask several years before the sale, and here is why timing is key.

Contributing shares to a holding company: a deferral, not a write-off

Luxembourg law provides for a share exchange regime which, under certain conditions, allows shares to be contributed to a holding company without immediate taxation for the contributor. The capital gain is not wiped out, but deferred: the holding company shares received in exchange are deemed for tax purposes to have been acquired at the original price of your shares, as if you had never sold. The accrued capital gain therefore remains attached to your new shares, pending a future event that will trigger taxation. In practice:

If you one day sell the shares of the holding company itself, taxation is triggered: the capital gain is calculated by reference to the original price of the shares you contributed to the holding company and therefore includes the gain accrued before the contribution. It is taxed at the half-rate for a substantial shareholding.
If you pass the shares on to a child (by gift or inheritance), no capital gains tax is due at that point, as a transfer without consideration does not in principle constitute a taxable disposal, provided your child is a Luxembourg tax resident (if not, you will be taxable at the time of the gift or inheritance). Your child takes over the original value of your shares, and the capital gain will only be taxed if they in turn sell them. As for transfer duties, inheritance in the direct line benefits from a largely favourable regime in Luxembourg, and notarised gifts in the direct line are subject to moderate registration duties.

In a family wealth strategy, taxation can thus be deferred for a very long time, sometimes beyond a generation. The trade-off: the money stays in the structure, serving a long-term strategy.

Safeguards to observe

the 12-month holding requirement for the holding company to benefit from the exemption;
and above all the business purpose: a holding company set up on the eve of an already negotiated sale, with no justification other than tax, is at risk of being challenged by the tax authorities. The transaction must have genuine economic substance and consistency (reinvestment, wealth governance, long-term strategy), not merely a tax objective.

In practice, the ideal structure should be put in place at least 2 to 3 years before the planned sale. While this is advice drawn from experience rather than a tax rule, the thinking should not start once a buyer has been identified and an offer is on the table. This is also the time needed to prepare the business itself: strengthening its appeal and reducing the risks a buyer will perceive, starting with its dependence on its owner-manager. The two workstreams go hand in hand.

Key takeaways

In 2026, an owner-manager resident in Luxembourg who directly sells a substantial shareholding is taxed at a maximum of around 24.29%. A holding company meeting the conditions of the participation exemption regime (known as the “parent-subsidiary” regime), for its part, makes it possible to sell without immediate taxation of the capital gain, reinvest the full proceeds, and manage the upstreaming of cash over time.

The right choice therefore comes down to a single question, to be asked before any other: what do you want to do with the sale proceeds?

Finally, preparing a sale calls for a comprehensive approach: valuation, financial and operational preparation, deal structure, taxation and wealth strategy form a whole. Starting two or three years ahead gives you the means to sell better, keep more, and already know what will become of the fruit of your work.

Disclaimer: The information presented in this article is general, provided for guidance only and based on the legislation and practice known at the date of publication. It is not exhaustive and does not constitute legal or tax advice, nor advice or a recommendation tailored to any particular situation. It shall not engage the liability of AKCEAN or of its partners, directors or employees. As the applicable tax treatment depends on each individual’s situation, you are advised to consult a lawyer or qualified tax adviser before making any decision.