Public Limited Company (SA)
Sociedade Anonima
Company formation in Portugal
The SA is best suited for: Companies planning a public listing on Euronext Lisbon, Larger businesses requiring share transferability, Joint ventures between multiple institutional partners, Companies in regulated sectors requiring an SA structure. Taxed identically to the Lda under the IRC code. Standard 21% rate with the SME reduced rate of 17% on first โฌ50,000 (if qualifying). Municipal and state surcharges apply on the same basis. SAs used as holding vehicles benefit from Portugal's participation exemption on dividends from EU and treaty-country subsidiaries (subject to conditions). The same Madeira Free Zone incentives are available for qualifying SA structures.
- Companies planning a public listing on Euronext Lisbon
- Larger businesses requiring share transferability
- Joint ventures between multiple institutional partners
- Companies in regulated sectors requiring an SA structure
Key Facts
Step-by-Step Formation Process
Obtain NIF for all founders
All five minimum shareholders need a Portuguese NIF. For corporate shareholders, the equivalent corporate tax identification is required.
Reserve company name and draft articles
Obtain the Certificate of Admissibility and prepare detailed articles of association covering share classes, board composition, supervisory structure, and general meeting procedures.
Execute the public deed of incorporation
The SA is formed by public deed (escritura publica) before a notary or through the commercial registry. The deed includes the articles of association and confirmation of capital subscription.
Deposit share capital
Deposit the minimum โฌ50,000 share capital. At least 30% of the subscribed capital must be paid up at incorporation, with the remainder due within five years.
Register with the commercial registry and tax authority
File the incorporation with the Conservatoria do Registo Comercial and register for IRC and IVA with the tax authority.
Appoint statutory auditor and open bank account
SAs must appoint a statutory auditor (Revisor Oficial de Contas). Open a corporate bank account for ongoing operations.
Required Documents
- NIF for all shareholders (minimum 5)
- Passport or national ID of all shareholders and directors
- Public deed of incorporation (escritura publica)
- Articles of association
- Bank statement confirming capital deposit
- Proof of registered office address
- Statutory auditor appointment letter
Cost Overview
Tax Treatment
Taxed identically to the Lda under the IRC code. Standard 21% rate with the SME reduced rate of 17% on first โฌ50,000 (if qualifying). Municipal and state surcharges apply on the same basis. SAs used as holding vehicles benefit from Portugal's participation exemption on dividends from EU and treaty-country subsidiaries (subject to conditions). The same Madeira Free Zone incentives are available for qualifying SA structures.
Pros & Cons
- Shares are freely transferable โ suitable for public offerings
- Can issue bonds and other debt instruments to the public
- Greater credibility for large-scale operations and institutional partnerships
- Access to Euronext Lisbon for public listing
- Same treaty network and EU directive benefits as the Lda
- Requires a minimum of 5 shareholders
- โฌ50,000 minimum share capital with mandatory partial upfront payment
- Mandatory statutory auditor adds ongoing cost
- More complex governance โ board of directors and supervisory board or fiscal council required
- Significantly higher formation and compliance costs than the Lda
- Overkill for startups and most SMEs
Other Structures in Portugal
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Get StartedThis content is educational and does not constitute legal or tax advice. Always consult a qualified professional for your specific situation. Data last verified March 2026.