Starting a company · Guía Emprendedor editorial team

Step-by-step route for registering a limited company in Spain

How to register a company in Spain

To register a typical Spanish limited company (Sociedad Limitada or SL), you move from a proposed name and founders' agreement to a notarised deed, a company NIF and registration at the Provincial Mercantile Registry. Registration is the point at which the SL acquires its legal personality.

The process is easier when you decide ownership, management, activity and identification before submitting forms. CIRCE can coordinate many filings, but it cannot make those decisions for the founders.

Before step one: define the company

Agree these points first:

  • one or more shareholders and their percentages;
  • cash or non-cash contributions and total share capital;
  • registered office in Spain;
  • corporate purpose and intended activities;
  • sole director, joint or joint-and-several directors, or board structure;
  • who will sign the deed and whether anyone needs a power of attorney;
  • whether standard articles fit or bespoke articles are needed.

An SL may have one shareholder and share capital from €1. Special reserve and liquidation-liability rules apply while capital plus legal reserve remains below €3,000, so choose capital based on the business plan rather than the legal floor.

Step 1: reserve the company name

Request a negative company-name certificate from the Central Mercantile Registry (Registro Mercantil Central). It confirms that the proposed denomination is not already registered or reserved in a way that prevents its use.

Prepare alternatives in the order you prefer. The brand or domain you use commercially is a separate issue from the registered company name, so check trademarks and domains independently where relevant.

Step 2: prepare capital and ownership evidence

The participations of an SL must be fully assumed and paid at incorporation. Capital can be contributed in cash or qualifying non-cash assets. The deed must describe the contributions and attribute the corresponding participations.

For cash contributions, the usual evidence is a bank certificate. Current company law also permits the founders to assume joint liability for the reality of cash contributions in the circumstances provided by law instead of producing that certificate. Confirm the evidence route with the notary before the appointment.

Non-cash contributions require a clear description, valuation and ownership basis. Their treatment creates specific founder liabilities and deserves individual drafting.

Step 3: assemble founder and director documents

For each individual founder or director, confirm the identity document and Spanish NIF. A foreign individual's NIE generally serves as their NIF. A corporate shareholder needs evidence of existence, ownership and representation, plus a Spanish NIF where required.

Documents issued abroad may need:

  • a sworn translation into Spanish or another accepted official language;
  • consular legalisation or a Hague apostille, unless an exemption applies;
  • recent registry evidence;
  • a power of attorney authorising the exact incorporation acts.

Foreign founders should read Starting a business in Spain as a foreigner and Can a non-resident form an SL in Spain? before fixing a signing date.

Step 4: sign the deed of incorporation

The founders—or their properly authorised representatives—execute a public deed before a Spanish notary. It normally records:

  • founders and their contributions;
  • allocated participations;
  • the articles of association;
  • the initial management body and appointment of directors;
  • beneficial-ownership information and required declarations.

The articles govern the company after formation. Standard articles can suit a straightforward structure; bespoke provisions may be appropriate where shareholders need tailored transfer, voting, management or exit rules.

Step 5: obtain the provisional NIF and declare census data

The SL needs its own tax identification number. The provisional NIF is requested using Form 036, whether directly or within the CIRCE/DUE process. At minimum, the Tax Agency requires evidence of the agreement to form the entity and the identifying information it specifies.

Form 037 is no longer an alternative: it was abolished with effect from 3 February 2025. The DUE can replace several initial declarations for eligible formations, but later changes still need to be reported when the data differs.

Do not invoice or begin operations without confirming that the company's census, VAT, withholding and activity data reflect what the business will actually do.

Step 6: register at the Provincial Mercantile Registry

The deed is filed with the Mercantile Registry for the province of the company's registered office. The registrar checks that the deed complies with the applicable requirements. If defects are raised, they must be corrected before registration can be completed.

Once registered, the SL acquires legal personality. Keep the registration evidence and the final registered version of the deed and articles in the corporate records.

Step 7: convert the provisional NIF into a definitive NIF

After registration, submit the census modification and outstanding documents requested by the AEAT for the definitive NIF. The Tax Agency states that an entity with a provisional NIF must provide the missing documents within one month of registration in the corresponding register.

Leaving this step unfinished can lead to revocation of the provisional NIF. Check the company's tax address, registered office, representatives, shareholders and activity data at the same time.

Step 8: complete start-of-activity obligations

Company registration does not automatically authorise every activity. Before trading, identify what applies at each level:

  • municipal opening, works or activity procedures;
  • regional authorisations;
  • professional or sector registers;
  • VAT and intra-EU operator registration where relevant;
  • Social Security registration of directors, working shareholders and employees;
  • workplace, prevention and employment formalities;
  • invoicing, accounting, data-protection and insurance requirements.

The correct list depends on the activity, premises, customers, staff and location.

Direct route or CIRCE?

The CIRCE system coordinates company formation through the Documento Único Electrónico (DUE). A PAE can help complete it, or eligible founders can use the virtual PAE. CIRCE may transmit data to the notary, Tax Agency, Social Security and Mercantile Registry as appropriate.

It is especially useful for a standard structure. A direct, coordinated process with a notary and advisers may fit better when the company has foreign corporate shareholders, non-cash contributions, bespoke governance or complex powers of attorney.

Use the SL formation timeline to map dependencies and the SL cost calculator to keep capital, formation fees and recurring costs separate. The complete guide to starting an SL provides the broader planning context.

Registration pack checklist

  • Negative company-name certificate
  • Founder and director identity documents and NIFs
  • Corporate shareholder documents, if any
  • Translations, legalisations or apostilles, if required
  • Powers of attorney, if anyone signs through a representative
  • Capital evidence and non-cash contribution details
  • Final ownership, management and articles decisions
  • Registered office and activity information
  • Deed, provisional NIF and census submission evidence
  • Registry evidence and definitive-NIF follow-up
  • Activity-specific licences and Social Security plan

Continue the foreign-founder series

Official sources

Start with the route, not the paperwork

Use the free business diagnosis to clarify legal form, ownership and activity before requesting the company name. A clean decision pack prevents the notarial and registry process from becoming a series of corrections.

Editorial review: Guía Emprendedor editorial team, on 2026-08-14. Sources checked on 2026-08-14.