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Luxembourg Company Formation & Registration: Step-by-Step Legal Guide 2026

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Luxembourg Company Formation & Registration: Complete Step-by-Step Guide 2026

Luxembourg consistently ranks among the world’s most competitive business environments. Its central European location, political stability, AAA credit rating and extensive tax treaty network make it the preferred jurisdiction for holding companies, investment structures, European headquarters and financial services businesses.

Why Form a Company in Luxembourg?

  • Strategic location — at the crossroads of France, Germany and Belgium, with direct access to EU markets
  • Extensive treaty network — 80+ double tax treaties reducing withholding taxes on dividends, interest and royalties
  • Participation exemption — full exemption from CIT on qualifying dividends and capital gains from subsidiaries
  • IP Box regime — 80% income exemption on qualifying intellectual property income
  • Multilingual workforce — English, French, German and Luxembourgish in daily business use
  • EU regulatory access — EU passporting for financial services, funds and insurance

Choosing Your Entity Type

Entity Min. Capital Shareholders Best For
SARL €12,000 1–100 SMEs, start-ups, JVs, holdings
SA €30,000 1+ Large companies, listed, PE portfolio
SCSp None 1 GP + 1 LP Fund structures, transparent entities
SARL-S €1 1–100 (natural persons) Micro-businesses, freelancers

For international holding structures and investment vehicles, the SARL remains the most commonly used form due to its simplicity and governance flexibility. For structures requiring freely transferable shares or multiple share classes, the SA is preferred.

The Incorporation Process: Step by Step

Step 1 — Name Reservation & Availability Check

We search the RCS to verify the proposed name is available and compliant with Luxembourg naming rules. We reserve the name if required.

Step 2 — Draft Articles of Association

We prepare tailored statuts covering: share classes, transfer restrictions, quorum and majority rules, board composition, reserved matters, and special investor or manager rights.

Step 3 — Deposit Share Capital

Minimum capital is deposited in a Luxembourg bank. The bank issues a certificat de blocage confirming receipt. Funds are released upon RCS registration.

Step 4 — Execute Notarial Deed

Articles of association are executed before a Luxembourg notary as an authentic act. Shareholders unable to attend can grant a notarised power of attorney. We coordinate the notary appointment and prepare all identification documents.

Step 5 — RCS Registration & RESA Publication

The notary submits the deed to the RCS. The company receives a unique registration number. The constitutional notice is published in the RESA — giving the company legal existence vis-à-vis third parties.

Step 6 — Tax Registrations & Business Permits

We handle registration for corporate income tax, VAT, and — if required — the autorisation d’établissement (business permit) from the Ministry of the Economy.

Formation Costs & Timeline

  • Notary fees: €1,500–3,500
  • RCS registration: €75–185
  • RESA publication: €100–250
  • Legal fees (drafting & coordination): €2,000–5,000
  • Min. share capital (SARL): €12,000
  • Typical total timeline: 2–4 weeks

Substance Requirements & Tax Residency

A Luxembourg company is tax resident if incorporated here or if it has its effective place of management in Luxembourg. Since 2017, demonstrating genuine substance is essential for claiming treaty benefits and avoiding challenge by tax authorities.

Key substance indicators:

  • Board meetings held in Luxembourg with a quorum of resident directors
  • Strategic decisions made in Luxembourg
  • At least one director with genuine decision-making authority and Luxembourg ties
  • Adequate staff proportionate to activities
  • Accounting records maintained in Luxembourg

Luxembourg Holding Structures & Tax Benefits

Participation Exemption

Dividends and capital gains from qualifying participations are fully exempt from Luxembourg CIT. Conditions: the Luxembourg company must hold ≥10% (or €1.2M cost) of the subsidiary for an uninterrupted period of 12 months.

Withholding Tax on Outbound Dividends

Luxembourg levies a 15% WHT on dividends paid to shareholders. Reduced to 0% under the EU Parent-Subsidiary Directive (qualifying EU parents holding ≥10% for 12 months) and to treaty rates under applicable double tax treaties.

IP Box Regime

Luxembourg’s IP Box provides an 80% income exemption on net income derived from qualifying intellectual property — patents, software copyrights, utility models, and supplementary protection certificates — resulting in an effective tax rate of approximately 4.99% on qualifying IP income.

Our corporate team manages the entire formation process — from entity selection to notarial execution, registration and tax set-up. Contact us for a free formation consultation.

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GDPR & Data Protection Law in Luxembourg: Legal Compliance Guide 2026

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RGPD et protection des données au Luxembourg →


GDPR & Data Protection Law in Luxembourg: Complete Compliance Guide 2026

The General Data Protection Regulation (GDPR — Regulation 2016/679) has been directly applicable in Luxembourg since May 2018. For Luxembourg-based companies — from investment funds and financial institutions to retail businesses and law firms — GDPR compliance is a legal obligation with serious financial and reputational consequences for non-compliance.

Luxembourg is home to the European headquarters of many of the world’s largest technology companies, making the Commission Nationale pour la Protection des Données (CNPD) one of the most active data protection authorities in the EU.

GDPR Fundamentals for Luxembourg Businesses

Who Does GDPR Apply To?

GDPR applies to any organisation that processes personal data in the context of activities of an EU establishment, or that processes data of EU residents — regardless of where the organisation is established. For Luxembourg companies, virtually every business that handles customer, employee or supplier data is subject to GDPR.

The Six Legal Bases for Processing

Every processing activity must rest on one of six legal bases under Article 6 GDPR:

  • Consent — freely given, specific, informed and unambiguous
  • Contract — processing is necessary for performance of a contract
  • Legal obligation — required under EU or national law
  • Vital interests — to protect someone’s life
  • Public task — public authorities performing their tasks
  • Legitimate interests — the most commonly used and most scrutinised basis for private entities

The CNPD: Luxembourg’s Data Protection Authority

The Commission Nationale pour la Protection des Données (CNPD) is Luxembourg’s independent supervisory authority under GDPR. It can impose fines of:

  • Up to €20 million or 4% of annual global turnover for serious substantive violations
  • Up to €10 million or 2% of turnover for procedural violations

Luxembourg has issued some of the largest GDPR fines in Europe, including a €746 million fine against a major e-commerce platform. Multinational groups with European headquarters in Luxembourg are particularly exposed to CNPD enforcement.

One-Stop-Shop Mechanism

For companies with their main EU establishment in Luxembourg, the CNPD serves as the lead supervisory authority for cross-border processing activities under the GDPR one-stop-shop mechanism.

Key Compliance Obligations

Records of Processing Activities (Article 30)

Most organisations must maintain a Record of Processing Activities (ROPA) — a comprehensive inventory of all data processing operations, covering purposes, legal bases, data categories, retention periods, security measures, and recipients.

Data Protection Impact Assessments (DPIA)

A DPIA is mandatory for processing likely to result in a high risk to individuals’ rights — including systematic profiling, large-scale processing of special categories, and systematic monitoring of public areas. The CNPD has published a list of processing types requiring a DPIA.

Data Protection Officer (DPO)

Appointment of a DPO is mandatory when your organisation is a public body, systematically monitors individuals at scale, or processes special categories at scale. We offer external DPO services for Luxembourg companies requiring qualified, independent oversight without the cost of a full-time hire.

Data Processing Agreements (DPA)

Article 28 GDPR requires a written contract between controller and processor for every data processing relationship. A compliant DPA must include:

  • Subject matter, duration, nature and purpose of processing
  • Obligation to process only on documented controller instructions
  • Technical and organisational security measures (Article 32)
  • Sub-processor engagement rules
  • Data breach notification without undue delay
  • Data deletion or return on termination
  • Audit rights for the controller

International Data Transfers

Transferring personal data outside the EEA requires an appropriate transfer mechanism: EU adequacy decision, Standard Contractual Clauses (SCCs — updated 2021), Binding Corporate Rules (BCRs), or Article 49 derogations. Following Schrems II, transfer impact assessments (TIAs) are required to assess third-country legal frameworks.

Data Breach Management

72-Hour Notification Obligation

Article 33 GDPR requires notification of personal data breaches to the CNPD within 72 hours of becoming aware — unless the breach is unlikely to result in a risk to individuals. Where risk is high, affected individuals must also be notified without undue delay (Article 34).

We provide immediate legal support when a breach is suspected or confirmed: assessing notification obligations, preparing CNPD notifications, drafting individual communications, coordinating with IT forensics, and managing regulatory investigations.

From DPIA assessments and DPA drafting to breach management and DPO services — our data protection lawyers provide end-to-end compliance support. Contact us for a free GDPR consultation.

Corporate Law & Business Structuring in Luxembourg: Complete Legal Guide 2026

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Droit des sociétés au Luxembourg →


Corporate Law & Business Structuring in Luxembourg: Complete Legal Guide 2026

Luxembourg’s strategic position at the heart of Europe, its political stability, and its business-friendly legal system make it one of the most attractive jurisdictions for international corporate structuring. Whether you are establishing a new entity, executing an acquisition, or restructuring an existing group, expert corporate law counsel is indispensable.

Luxembourg Company Types: Choosing the Right Vehicle

The Luxembourg Commercial Companies Act (Loi du 10 août 1915), substantially reformed in 2016, provides a modern, flexible toolkit for business structuring. Selecting the right entity depends on ownership structure, liability requirements, governance preferences and tax strategy.

Société à Responsabilité Limitée (SARL)

The SARL is Luxembourg’s most widely used private company form. Key features:

  • Minimum share capital: €12,000 (fully paid up at incorporation)
  • Maximum shareholders: 100 (natural persons or legal entities)
  • Management: one or more gérants (managers), no board required
  • Ideal for: SMEs, holding companies, joint ventures

Société Anonyme (SA)

The SA is the preferred structure for larger businesses, external financing, investment vehicles and listed entities.

  • Minimum share capital: €30,000
  • Governance: board of directors (classic) or dual board structure
  • Shares: freely transferable unless restricted by articles
  • Ideal for: listed companies, investment structures, PE portfolio companies

Société en Commandite Spéciale (SCSp)

Introduced in the 2016 reforms, the SCSp is Luxembourg’s equivalent of an Anglo-Saxon limited partnership. With no legal personality, contractual flexibility and tax transparency, it has become the standard vehicle for private equity fund structures.

Company Formation: Step-by-Step Process

Incorporating a Luxembourg company involves well-defined steps. Errors at formation can create costly complications — our team ensures a seamless process.

  1. Reserve the company name — verified for uniqueness with the RCS
  2. Prepare constitutional documents — articles of association tailored to your governance requirements
  3. Deposit share capital — minimum capital deposited in a Luxembourg bank (certificat de blocage issued)
  4. Execute notarial deed — articles signed before a Luxembourg notary public
  5. RCS registration & RESA publication — notary submits deed; company receives unique registration number
  6. Tax registrations & business permits — VAT, corporate income tax, and autorisation d’établissement if required

With complete documentation, a Luxembourg SARL or SA can be incorporated in 2–4 weeks.

Shareholders Agreements & Corporate Governance

A well-drafted shareholders agreement is the cornerstone of any successful joint venture, investment structure or family business. Key provisions we draft:

  • Reserved matters and veto rights — protecting minority shareholders
  • Tag-along and drag-along rights — ensuring liquidity in M&A scenarios
  • Pre-emption rights — first right of refusal on share transfers
  • Anti-dilution provisions — protecting investors against down-round dilution
  • Deadlock mechanisms — Russian roulette, Texas shoot-out for 50/50 structures

Mergers & Acquisitions (M&A) in Luxembourg

Luxembourg is one of Europe’s most active M&A markets. Our M&A team advises on the full transaction lifecycle:

Legal Due Diligence

We conduct comprehensive legal due diligence reviewing corporate structure, material contracts, regulatory compliance, intellectual property, employment obligations, ongoing litigation and real estate assets.

Transaction Structuring

Optimal M&A structuring considers: direct share deal vs. asset purchase, holding company placement, financing structure (debt push-down, acquisition facilities), tax efficiency of the acquisition SPV, and applicable merger filing thresholds.

Negotiating and Drafting Transaction Documents

We negotiate and draft the full suite of M&A documents: LOI, SPA, APA, management warranties deed, escrow agreement, and transitional services agreement.

Corporate Restructuring & Group Rationalisation

Multinational groups regularly review Luxembourg holding structures to optimise tax, regulatory compliance, governance and operational efficiency. We advise on mergers, demergers, partial business transfers, and cross-border conversions.

Following the EU Mobility Directive (transposed in Luxembourg in 2023), companies can convert their legal form across EU member states — retaining legal continuity while redomiciling to another jurisdiction.

Our corporate team provides clear, practical advice for every stage of your business — from formation to complex M&A transactions. Contact us for a free initial consultation.

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Investment Funds Law in Luxembourg: UCITS, AIFMD, RAIF Complete Guide 2026

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Droit des fonds d’investissement au Luxembourg →


Investment Funds Law in Luxembourg: Complete Guide 2026

Luxembourg is the second-largest fund domicile in the world, trailing only the United States. With over 3,700 regulated funds and €5.6 trillion in assets under management, the Grand Duchy has become the unrivalled gateway for European and cross-border fund distribution. Navigating its regulatory landscape — from UCITS to RAIF — requires precise legal expertise.

Types of Investment Funds in Luxembourg

Luxembourg’s legal toolkit offers several fund vehicles, each suited to different investor profiles, asset classes and distribution strategies. Choosing the right structure from the outset is critical — it determines your regulatory burden, tax treatment and speed to market.

UCITS — The Gold Standard for Retail Funds

Undertakings for Collective Investment in Transferable Securities (UCITS) are the most recognised fund brand globally. Governed by the UCITS Directive (2009/65/EC), they benefit from a full EU passport allowing distribution across all 27 member states with a single authorisation. Luxembourg hosts the majority of cross-border UCITS — nearly 4 in 5 UCITS sold across Europe are domiciled here.

  • Eligible assets: listed equities, bonds, money market instruments, derivatives (hedging)
  • Diversification rules: 5/10/40 rule (no more than 10% in any single issuer)
  • Leverage: limited, typically UCITS-compliant derivatives only
  • Supervision: direct CSSF authorisation required

RAIF — Speed Without Compromising Substance

Introduced in 2016, the Reserved Alternative Investment Fund (RAIF) has become one of Luxembourg’s most popular fund vehicles. Unlike the SIF, the RAIF requires no direct CSSF authorisation — dramatically reducing time-to-market to as little as 4–6 weeks. The fund must appoint an EU-authorised AIFM, which provides the necessary regulatory oversight.

Specialised Investment Fund (SIF)

The SIF targets well-informed investors and benefits from CSSF authorisation, giving it a degree of regulatory credibility appreciated by institutional investors. Unlike UCITS, SIFs can invest in a broad range of assets including private equity, real estate, infrastructure and hedge strategies.

SICAR — Dedicated to Risk Capital

The Société d’Investissement en Capital à Risque (SICAR) is specifically designed for private equity and venture capital. Income and capital gains from risk capital investments are fully exempt from corporate income tax at fund level.

Luxembourg’s Regulatory Framework

The regulatory architecture for investment funds in Luxembourg is built upon EU directives, national law, and CSSF circulars. The Commission de Surveillance du Secteur Financier (CSSF) approves UCITS and SIFs, supervises AIFMs, and issues binding circulars on fund regulation.

Fund Type CSSF Approval Target Investors Typical Launch Time
UCITS Required Retail & Professional 3–6 months
SIF Required Well-Informed Investors 2–4 months
RAIF Not required Well-Informed Investors 4–8 weeks
SICAR Required Institutional / Professional 2–4 months

Fund Governance & Compliance

Strong governance is both a regulatory requirement and a commercial imperative. Institutional investors scrutinise governance frameworks before committing capital.

Board Composition and Independence

Luxembourg regulated funds require boards with sufficient independence and expertise. The CSSF expects that a majority of directors are genuinely independent of the AIFM or management company. Our lawyers assist in structuring boards, preparing mandates, and ensuring compliance with CSSF Circular 18/698.

AML/KYC & Sanctions Compliance

Luxembourg-domiciled funds are subject to the Law of 12 November 2004 on combating money laundering and terrorist financing. This requires robust KYC procedures for investors, ongoing monitoring, and sanctions screening against EU and UN lists.

SFDR and ESG Disclosure

Since March 2021, the Sustainable Finance Disclosure Regulation (SFDR) requires fund managers to classify products as Article 6, Article 8 or Article 9. Legal advice is essential to ensure correct classification and avoid greenwashing exposure.

Tax Framework for Luxembourg Investment Funds

Subscription Tax (Taxe d’Abonnement)

Luxembourg funds are subject to a quarterly subscription tax of 0.05% per annum on net assets (0.01% for money market funds and institutional share classes). This minimal tax replaces corporate income tax at fund level.

Treaty Network and Withholding Tax Efficiency

Luxembourg’s network of 80+ double tax treaties allows funds to reduce withholding taxes on portfolio investment income. Combined with the participation exemption regime, Luxembourg structures can achieve near-zero effective withholding tax leakage on qualifying investments.

5 Common Legal Mistakes Investment Funds Make in Luxembourg

1. Choosing the Wrong Fund Vehicle

Many promoters default to familiar structures without proper analysis. A UCITS promoter seeking illiquid assets, or a private equity sponsor choosing a SIF when a RAIF would be faster, incurs unnecessary costs and delays.

2. Underestimating the CSSF Approval Timeline

Poorly prepared applications for SIF authorisation can take significantly longer than the typical 2–4 months. We prepare comprehensive application dossiers to ensure the fastest possible approval.

3. Inadequate Investor Documentation

Vague or legally insufficient subscription agreements and offering memoranda create exposure to investor disputes and regulatory sanctions.

4. Ignoring SFDR Classification Risk

Incorrect SFDR classification — particularly over-claiming Article 8 or 9 status — exposes managers to EU regulatory action and investor misrepresentation claims.

5. Delayed Legal Intervention in Disputes

Investor disputes and co-investor conflicts are best resolved early. Waiting until litigation is inevitable dramatically increases cost and risk.

Lerusse Merckx & Partners provides end-to-end legal support for fund managers and investors — from initial vehicle selection to regulatory authorisation, investor documentation and ongoing compliance. Contact us for a free consultation.

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