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Business glossary

Sociedad Anónima (SA) — Spanish Corporation

A Sociedad Anónima (SA) is Spain's corporation structure for larger companies, where capital is divided into freely transferable shares (acciones). It requires a minimum share capital of EUR 60,000 and is the mandatory form for companies that wish to list on a Spanish stock exchange.

Corporate

What Is a Sociedad Anónima?

The Sociedad Anónima (SA) is Spain’s large-company corporate form, equivalent to a UK Public Limited Company (PLC), a US C-Corporation (publicly held), or a German Aktiengesellschaft (AG). Like the SL, it offers limited liability for all shareholders, but it is designed for companies that need freely transferable shares, a broader investor base, or access to the capital markets.

Both the SL and SA are governed by the same Ley de Sociedades de Capital (Real Decreto Legislativo 1/2010), though different provisions apply to each.

Key Characteristics

FeatureDetails
Minimum share capitalEUR 60,000 (at least 25% paid up on incorporation)
Number of shareholders1 (SA unipersonal) to unlimited
SharesCalled acciones; freely transferable by default unless restricted by articles
ManagementBoard of directors (consejo de administración) required when >2 directors
AuditMandatory above statutory size thresholds; always for listed SAs
Annual accountsFiled with the Commercial Registry

SA vs SL: The Key Differences

SASL
Minimum capitalEUR 60,000EUR 3,000
Share transferabilityFreely transferableRestricted by law
Capital paid up at incorporation25% minimum100%
Bearer sharesHistorically possible; now largely abolishedNot applicable
Listed on stock exchangeYes (required for listing)No
Governance complexityHigherLower
Preferred forListed companies, large investors, capital market accessSMEs, closely held businesses

Governance Structure

The SA requires more formal governance than the SL:

  • General Meeting of Shareholders (Junta General de Accionistas): Must meet at least annually. Extraordinary meetings can be called by the board or by shareholders representing at least 5% of capital.
  • Board of Directors (Consejo de Administración): Required when the company has more than two directors. The board typically elects a Chairman and may appoint a Managing Director (Consejero Delegado).
  • Auditors: Large SAs and all listed SAs must have their accounts audited by a registered auditor (ROAC).

When to Choose an SA Over an SL

The SA is appropriate when:

  1. Stock exchange listing is planned — the Spanish stock exchange (BME) requires SA status.
  2. Employee share option plans require freely tradeable shares.
  3. Institutional investors (private equity, venture capital) require the SA structure for investment documentation compatibility.
  4. The company needs to issue bonds or other debt securities in the capital markets.
  5. The founders anticipate a capital structure with many shareholders and complex shareholding tiers.

For most foreign investors setting up an operational subsidiary or holding company in Spain, the SL is the better choice due to lower capital requirements, simpler governance, and greater flexibility in shareholder arrangements. The SA makes sense primarily when listing or large-scale capital market activity is envisaged.

Incorporation Process

The SA incorporation process mirrors that of the SL (name reservation, bank deposit of capital, notarial deed, tax registration, Commercial Registry filing) but with stricter formalities:

  • Articles of association must follow more rigid statutory requirements.
  • At least 25% of the minimum EUR 60,000 capital (i.e., EUR 15,000) must be in cash at incorporation; the remainder may be contributed in subsequent capital calls.
  • Non-cash contributions require an independent expert valuation.

Listed SAs: Additional Obligations

Companies whose shares are admitted to trading on the Spanish exchanges (Bolsa de Madrid, Barcelona, Bilbao, Valencia, or the BME Growth market for smaller companies) are subject to the securities markets law (Ley del Mercado de Valores), CNMV oversight, and continuous reporting obligations.

How BMC Can Help

We advise on the choice between SL and SA for new investments, manage the incorporation of both structures, assist with conversions from SL to SA, and provide ongoing corporate secretarial services for SAs including board meeting support and commercial registry filings.

Frequently asked questions

What is the minimum share capital required for a Sociedad Anónima in Spain?
A Sociedad Anónima requires a minimum share capital of EUR 60,000, of which at least 25% (EUR 15,000) must be paid up at the time of incorporation in cash. The remaining 75% can be paid in subsequent capital calls. Non-cash contributions require an independent expert valuation, unlike in an SL where directors bear responsibility for the valuation.
When should a foreign investor choose an SA over an SL in Spain?
The SA is the appropriate structure when a stock exchange listing is planned (BME requires SA status), when employee share option plans require freely tradeable shares, when institutional investors require SA structure for documentation compatibility, when the company needs to issue bonds or debt securities, or when a complex multi-shareholder capital structure with different share classes is needed.
What are the main governance differences between a Spanish SA and SL?
The SA has stricter governance requirements: it must have a formal board of directors when there are more than two directors, requires a supervisory structure for listed companies, has specific quorum requirements for shareholders' meetings (25% on first call), and is subject to mandatory statutory audit above size thresholds and always for listed companies. An SL allows more flexibility and simpler administration.
Can a Sociedad Anónima be owned by a single shareholder in Spain?
Yes. A Sociedad Anónima Unipersonal (sole-shareholder SA) is permitted under Spanish law. The sole shareholder exercises all decision-making rights that would otherwise belong to the shareholders' meeting. This status must be recorded at the Commercial Registry and in all commercial documentation. A single shareholder-director structure is common for foreign subsidiaries.
Is a statutory audit mandatory for a Sociedad Anónima in Spain?
All listed SAs must have their accounts audited by a registered auditor (ROAC). Non-listed SAs are subject to mandatory statutory audit if they exceed two of three size thresholds for two consecutive years: total assets above EUR 2.85 million, net turnover above EUR 5.7 million, or average employees above 50. Below these thresholds, audit is voluntary unless ordered by shareholders or courts.
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