The Société Anonyme (SA) is the reference corporate form in Luxembourg for large-scale projects, capital-raising operations and access to financial markets. Governed by the modified law of 10 August 1915 on commercial companies, the SA is a société de capitaux — a company defined by its capital rather than by the identity of its shareholders. It is the only Luxembourg legal form eligible for listing on the Luxembourg Stock Exchange (Bourse de Luxembourg).

Incorporation requires a minimum share capital of €30,000, of which at least 25 % (€7,500) must be released at formation. By comparison, the SARL requires €12,000 and the SAS also requires €30,000 but offers greater statutory flexibility. The SA must be established by notarial deed, and shareholders’ liability is strictly limited to their contributions.

The SA is particularly well suited to holding structures — notably the SOPARFI — as well as regulated financial entities, investment funds and any venture requiring broad investor participation. Its robust governance framework and transparent share-transfer rules make it the natural choice for institutional and cross-border projects. Whether you are planning company formation for a subsidiary or structuring a multi-jurisdictional group, the SA provides the credibility and legal certainty that international stakeholders expect.

1. Legal characteristics

1.1. Share capital and release

The SA requires a minimum share capital of €30,000. At least 25 % of this amount — i.e. €7,500 — must be paid up at the time of incorporation. The balance must be released within five years of formation, as and when the board of directors issues a call for funds.

In-kind contributions (assets, intellectual property, receivables) are permitted but must be valued in a report prepared by a réviseur d’entreprises agréé (approved statutory auditor). This report is annexed to the notarial deed and published with the articles of incorporation.

Tip: While the legal minimum is €30,000, banks and counterparties often expect higher capitalisation in practice. Consider your working-capital needs and the substance requirements of the Luxembourg tax authorities when determining your initial capital.

1.2. Shares and transferability

Shares in an SA may be registered or dematerialised bearer shares. They are, in principle, freely transferable — although the articles of incorporation may introduce approval clauses or pre-emption rights to restrict transfers.

This free transferability is one of the key distinctions from the SARL, where share transfers to third parties require the approval of shareholders representing at least 50 % of the capital. The SA is also the only Luxembourg company form that may be listed on a stock exchange, opening the door to public offerings and regulated markets.

1.3. Shareholder liability

Each shareholder’s liability is strictly limited to the amount of their capital contribution. Personal assets are not at risk, except in cases of abuse of legal personality or management fault where a shareholder also acts as a director.

2. Governance and management bodies

2.1. Monistic vs dualistic model

Luxembourg law offers the SA a choice between two governance structures:

Feature	Monistic model	Dualistic model
Management body	Board of directors (conseil d’administration)	Management board (directoire), 1–5 members
Minimum members	3 directors (or 1 if sole shareholder)	Management board: 1–5 · Supervisory board: min. 3
Supervisory body	None (internal committees optional)	Supervisory board (conseil de surveillance)
Delegation of daily management	May delegate to one or more administrateurs-délégués	Daily management delegated by default to management board
Best suited for	Standard companies, listed entities	Separation of ownership and management, large groups

Note: Since 2016, a single-shareholder SA may appoint a sole director instead of a full board, simplifying governance for wholly-owned subsidiaries and holding vehicles.

2.2. General meeting of shareholders

The annual general meeting (AGM) must be held within six months after the close of each financial year. Its core duties include approving the annual accounts, allocating profits and granting discharge to the directors.

An extraordinary general meeting (EGM) is required for any amendment to the articles of incorporation — capital increases or decreases, changes to the corporate purpose, mergers, conversions or dissolution. The EGM must be held before a notary and is subject to reinforced quorum and majority requirements (typically half the capital present and two-thirds majority).

2.3. Statutory audit

Small SAs may appoint a commissaire aux comptes (statutory auditor who is not necessarily a qualified auditor). However, an approved statutory auditor (réviseur d’entreprises agréé) becomes mandatory when the company exceeds two of the following three thresholds for two consecutive financial years:

Threshold	Limit
Balance-sheet total	> €4,400,000
Net turnover	> €8,800,000
Average full-time employees	> 50

3. SA vs SARL vs SAS comparison

Criterion	SA	SARL	SAS
Min. capital	€30,000	€12,000	€30,000
Capital release	25 % at formation	100 % at formation	25 % at formation
Shareholders	1+	1–100	1+
Securities	Shares (registered / bearer)	Units (parts sociales)	Shares (registered only)
Transferability	Free (subject to articles)	Restricted (approval required)	Free (subject to articles)
Stock-exchange eligible	Yes	No	No
Governance	Board of directors or dualistic	Manager(s)	Freely defined in articles
Notarial deed	Yes	Yes	Yes
Suitable for	Listed companies, funds, large groups	SMEs, family businesses	Joint ventures, start-ups, PE

For micro-enterprises with limited capital, the SARL-S (€1 minimum capital) may be a pragmatic alternative.

4. Formation process

4.1. Steps and indicative timings

Step	Description	Indicative time
1. Preparation	Draft articles, shareholder agreement, business plan	1–2 weeks
2. Bank account opening	Open a capital-blocking account; bank KYC procedures	3–6 weeks
3. Capital deposit	Transfer at least 25 % of the share capital; obtain blocking certificate	1–2 days after transfer
4. In-kind valuation	Auditor report (only if in-kind contributions)	1–3 weeks
5. Notarial deed	Execution of the articles of incorporation before a Luxembourg notary	1 day
6. RCS registration	Filing with the Registre de Commerce et des Sociétés; publication in RESA	3–7 business days
7. Post-incorporation	VAT registration, domiciliation, tax registrations, social security	2–4 weeks

In practice, the total timeline is 2 to 3 months, driven primarily by bank KYC procedures. Engaging an experienced company formation adviser can streamline the process significantly.

4.2. Required documents

• Valid identification (passport/ID) and proof of address for all shareholders and directors
• Draft articles of incorporation
• Bank blocking certificate confirming deposit of at least €7,500
• Auditor’s valuation report (if in-kind contributions)
• Proof of registered office (domiciliation agreement)
• Business plan (requested by most banks during KYC)

5. Formation costs

Item	Estimated cost
Notary fees (deed + publication)	€2,500 – €4,000
Legal / advisory fees	€1,500 – €3,000
RCS registration + RESA publication	€200 – €400
Auditor report (in-kind contributions)	€1,500 – €3,000
Total (cash contributions only)	€4,200 – €7,400

These amounts do not include the share capital itself (min. €30,000) or ongoing costs such as accounting, domiciliation and annual audit fees.

6. Taxation

6.1. Profit taxation

Luxembourg SAs are subject to the standard corporate tax regime:

Tax	Rate / basis (2025)
Corporate income tax (CIT)	14 % on taxable income ≤ €175,000 · 16 % on income > €200,000
Solidarity surcharge	7 % of CIT
Municipal business tax (MBT)	6.75 % (Luxembourg-City)
Combined effective rate	≈ 23.87 % (Luxembourg-City)
Net wealth tax (NWT)	0.5 % of net assets · minimum €535 to €32,100

Effective tax planning — including deduction of directors’ remuneration, benefits in kind and intra-group charges — can materially reduce the effective tax burden.

6.2. Parent-subsidiary and holding regime

The SA is the vehicle of choice for Luxembourg holding companies (SOPARFI). The participation exemption provides:

• Dividend exemption: 100 % exemption on dividends received, provided the parent holds at least 10 % or an acquisition cost of €1,200,000 for a minimum of 12 months.
• Capital-gains exemption: 100 % exemption on gains from qualifying participations (10 % or acquisition cost of €6,000,000, 12-month holding).

For groups with subsidiaries held at 95 % or more, tax consolidation (intégration fiscale) allows profits and losses of group entities to be offset at the level of the consolidating parent, significantly optimising the group’s overall tax position.

7. Recurring obligations

Obligation	Frequency / deadline
Accounting & bookkeeping	Continuous (accrual basis)
Annual general meeting	Within 6 months after year-end
Annual accounts filing (RCS)	Within 1 month after AGM approval
Corporate income tax return	31 May of the following year
Municipal business tax return	31 May of the following year
Net wealth tax return	31 May of the following year
VAT returns	Monthly or quarterly
Payroll & social security (CCSS)	Monthly declarations and contributions

Non-compliance carries penalties. Late filing of annual accounts with the RCS may result in administrative fines and, ultimately, judicial dissolution. Stay on top of deadlines by working with a qualified accounting firm.