The société civile immobilière (SCI) is used to hold and manage one or more properties with several partners. The company owns the assets. Its tax result is normally allocated to the partners according to their rights because an SCI is tax-transparent as a rule.
This structure can organise ownership and governance. It provides neither a general tax exemption nor limited liability. Capital, actual activity, partner profile and each property transaction must therefore be considered separately.
SCI capital and articles of association
At least two partners are required. The SCI must have a civil purpose. Its articles of association set the operating rules and organise the relationship between the partners.
There is no statutory minimum capital. The articles set the capital amount or state the value of the contributions made or to be made by each partner. Contributions can therefore be adapted to the project without a statutory threshold.
The articles may be executed as a private deed. A notarial deed is therefore not required merely to form the civil company. It becomes necessary when an instrument transfers Luxembourg real estate, so that the transfer can be transcribed and made enforceable against third parties.
The articles and required information are filed with the Trade and Companies Register (RCS) and published in the RESA, subject to the specific regime for certain family civil companies. An SCI registered with the RCS must also file its beneficial-owner information with the RBE and keep it current.
Tax transparency is the default rule
Article 175 of the Luxembourg income tax law treats a civil company as having no separate tax personality from its partners, subject in particular to Article 168quater. The SCI calculates a common result and allocates it to the partners according to their rights.
Tax transparency does not mean tax exemption. It identifies where the income is taxed. A natural person, a capital company and a non-resident partner do not have the same tax profile. The income category, tax residence, an applicable tax treaty and the classification of the interest as private or business property can change the outcome.
The SCI must determine its result and complete the filings applicable to collective enterprises. Tax on income already allocated to the partners does not depend on an actual cash distribution.
Commercial income does not automatically make the SCI opaque
The SCI’s legal purpose must remain civil. Its actual activity may nevertheless meet the business-income criteria in Article 14 LIR. Regular property trading or an organised operation with commercial services must therefore be classified from the facts, not from the SCI label alone.
A business-income classification may give rise to municipal business tax where the conditions for that tax are met. It does not, by itself, turn the SCI into a tax-opaque company or automatically trigger corporate income tax (CIT).
The partner base can also affect the income category. Article 14 LIR includes a specific commercial classification for certain profit-making activities where one or more capital companies hold a majority of the interests. That rule remains distinct from the transparency established by Article 175.
Article 168quater is a targeted exception. If a Luxembourg transparent entity meets the reverse-hybrid conditions, the portion of income that would otherwise remain untaxed may become subject to CIT at entity level. The rule depends in particular on the classification adopted by certain associated non-resident enterprises. It does not arise merely because the SCI earns business income.
The partner’s status determines the tax treatment
| Partner or situation | General tax analysis |
|---|---|
| Resident natural person | The allocated share follows the income category and the rules for private or business property |
| Non-resident natural person | Luxembourg-source income is examined under the LIR and the applicable tax treaty |
| Capital company | The allocated share enters its own tax result under the rules applicable to that company; ownership of the SCI interests may also affect the business-income classification |
| Article 168quater case | The otherwise untaxed portion may be subject to CIT at entity level within the limits of the reverse-hybrid rule |
A single calculation applying individual income-tax rates to every SCI partner would therefore be inaccurate. Real-estate capital gains, deductible expenses and filing obligations must be determined for the relevant partner and transaction.
Property disposals and transfers of SCI interests
A disposal of property held by the SCI produces a result allocated to the partners. For income-tax purposes, Article 175(2) LIR also treats a transfer for value of SCI interests as a disposal of the corresponding fraction of the underlying real estate. The capital-gains regime then depends on the partner’s status, the classification of the asset and the relevant holding period.
Registration duties follow a separate analysis. A direct acquisition of Luxembourg real estate normally bears 6% registration duty and 1% transcription duty. A municipal surcharge may apply in Luxembourg City depending on the property’s nature and use. A transfer for value of interests in a company not subject to CIT and holding Luxembourg real estate may be treated as a property sale in proportion to the interests transferred. It should not then be presented as attracting only the fixed EUR 75 duty.
A property contribution, a direct acquisition and a transfer of SCI interests are distinct transactions. Their taxable base, registration duties and tax treatment must be classified separately.
Partner liability and governance
The capital amount does not cap liability. A Court of Appeal judgment of 1 April 2009 confirms that partners are jointly and indefinitely liable to third parties. Their liability is primary. A creditor may proceed against the SCI, the partners or both without first pursuing the company.
Under the general regime, the debt is divided equally and liability is not joint and several. A clause in the articles that changes this allocation or limits liability to contributions is enforceable against a creditor only if that creditor accepted it.
The articles determine the manager’s powers, reserved partner decisions, voting rules and transfer restrictions. Civil-company law does not impose a meeting structure equivalent to the mandatory corporate bodies of a capital company. This flexibility makes the articles central to management continuity, admission of a new partner and transfers between family members or investors.
The SCI must maintain clear accounts to establish its result and each partner’s share. The general civil-company regime does not require publication of annual financial statements. That exemption does not remove the accounting information needed for tax filings or updates required at the RCS and RBE.
An SCI and an SARL serve different purposes
An SARL is commercial by legal form, tax-opaque and subject to a limited-liability framework. An SCI instead combines a civil purpose, indefinite partner liability and tax transparency as the default.
The choice cannot be reduced to a tax rate or capital figure. Intended activity, financing, partner tax profiles, governance, accepted liability and exit route all matter. A commercial property operation does not become civil merely because it appears in a clause of the articles.
Conclusion
A Luxembourg SCI has no statutory minimum capital, and its articles of association set the capital amount or value of the partners’ contributions. It is tax-transparent as a rule. An activity within Article 14 LIR may change the income category and give rise to municipal business tax where its conditions are met, without automatically making the SCI liable to CIT. Article 168quater remains a specific exception for reverse-hybrid situations.
Related service
Turn this topic into action
If this topic has a direct impact on your business, explore our Luxembourg tax support to align real-estate holding, transparency and reporting with the wider tax position.
Frequently Asked Questions
What minimum capital is required for a Luxembourg SCI?
No statutory minimum capital applies. The articles of association set the capital amount or state the value of the contributions made or to be made by each partner.
Is a Luxembourg SCI tax-transparent?
Yes, as a rule. The result is attributed to the partners and taxed according to their own status. A targeted exception can make an SCI taxable when Luxembourg treats it as transparent but the country of certain partners treats it as opaque.
Does commercial activity automatically make an SCI liable to corporate income tax?
No. An independent and lasting activity carried on for profit can produce business income. Municipal business tax may then apply if its conditions are met. That classification does not, by itself, make the SCI opaque or generally liable to corporate income tax.
Must an SCI always be formed by notarial deed?
No. Its articles of association may be executed as a private deed. However, an instrument transferring Luxembourg real estate must be notarised so that it can be transcribed and made enforceable against third parties.
Is partner liability limited to contributions?
No. Partners are jointly and indefinitely liable to third parties. Their liability is primary, not subsidiary. The debt is divided equally by default; a clause that changes this proportion or limits liability to contributions is enforceable against a creditor only if that creditor accepted it.
