Branch Office vs Subsidiary in Spain: Which Structure Is Best for Foreign Companies?

For multinational groups, choosing between a branch office vs subsidiary in Spain is a long-term strategic decision rather than a procedural formality. The chosen structure determines how profits are taxed and repatriated, where legal liability sits, the level of corporate governance required, and how readily the business can access Spanish banking services. These implications affect commercial operations long after incorporation and can be difficult to reverse, particularly for groups with non-resident directors, foreign shareholders, or complex business structures. Understanding these business structure options in Spain enables CFOs, corporate counsel, and senior decision-makers to determine which structure is best suited to their group's tax position, risk profile, and long-term commercial objectives.

What Is a Branch Office in Spain of a Foreign Company?

A branch (sucursal) is a secondary establishment of a foreign parent company, not a separate legal entity. It acts as a mere extension of the parent company, meaning the parent company and the branch are the same legal person operating through a Spanish presence. 

Because there is no legal separation, the parent company bears unlimited liability for all obligations, debts, and actions incurred by the branch. However, branches can legally hire staff, sign commercial contracts, conduct day-to-day business, and hold a Spanish Tax Identification Number (NIF). 

Tax Treatment for a Branch Office

Corporate Tax Rate

A branch office in Spain of a non-resident entity operates as a Permanent Establishment (PE) and is taxed under non-residents income tax (IRNR or Impuesto sobre la Renta de No Residentes) at 25% on Spain-attributable profits. 

Profit Remittance Tax

When after-tax profits are remitted to the foreign head office, Spain levies a 19% branch profit tax (also known as a complementary withholding tax). However, this tax is fully eliminated if the parent company is tax resident in an EU Member State or an EEA country with an effective exchange of tax information agreement with Spain. It may also be reduced under an applicable Double Taxation Agreement (DTA). Spain has more than 90 DTAs, many of which reduce the rate to between 5% and 15%.

Loss Offset

Branch losses can be offset directly against parent company income in the parent's home jurisdiction, depending on local domestic laws and the relevant DTT.

Transfer Pricing

Under Spanish tax law, transactions between a Spanish branch and its head office must adhere to the Authorized OECD Approach (AOA), meaning the branch is treated as a separate entity for profit attribution and tax purposes. However, the Spanish Tax Authorities (AEAT) generally do not allow deductions for internal royalties (or interest) paid directly between the branch and the head office.

Setting up a Branch Office in Spain as a Foreign Company

Setting up a branch in Spain requires drafting the parent company's board resolution to open a branch, its Articles of Association, and powers of attorney into a public deed (escritura pública) before a Spanish notary. 

• All foreign-issued corporate documents must carry the Hague Apostille and be translated into Spanish by a sworn translator (traductor jurado).
• The apostilled, translated, and signed deed must then be formally registered in the Commercial Registry (Registro Mercantil).
• Both the foreign parent company and the appointed branch manager require tax IDs: NIF for the parent company and NIE for the representative.
• You may be required to submit a foreign investment declaration (Form D-1A) to the Registro de Inversiones Exteriores (foreign investment registry) within one month of establishing the branch.

What Is a Subsidiary Company in Spain?

A Spanish subsidiary is an independent local company with its own legal personality, operating entirely on its own account and risk. Because it is legally separate from the foreign parent and governed exclusively by Spanish corporate  laws, it provides a legal "firewall" that insulates the parent company from the subsidiary's operational debts and liabilities. Even if the subsidiary company in Spain is 100% owned by a foreign parent, Spanish law treats it entirely as a local entity.

Tax Treatment for a Subsidiary Company in Spain

Corporate Income Tax (25%)

A Spanish subsidiary is treated as a Spanish resident company and is subject to Corporate Income Tax (Impuesto sobre Sociedades) at the standard 25% rate.

Reduced Corporate Tax Rate (15%) for Newly Formed Entities

Newly incorporated entities in Spain can apply a reduced 15% corporate tax rate for the first profitable period and the subsequent year, under Article 29.1 of Law 27/2014. The Spanish Directorate General for Taxes (DGT) allows this incentive even if the new entity operates in the same sector as related entities, provided there is no illegal transfer of a pre-existing activity.

Withholding Tax (WHT)

Spain imposes a standard 19% withholding tax on dividend repatriations, but substantial exemptions and reductions apply based on corporate residency, holding periods, and Double Taxation Treaties (DTTs). 

• If the parent company is resident in the EU/EEA, dividend distributions are generally exempt under the EU Parent-Subsidiary Directive, provided it holds a direct or indirect participation of at least 5% for at least one year.
• If the parent company is resident outside the EU/EEA, the applicable double taxation treaty may reduce the withholding tax rate to between 5% and 15%. 

Just like dividends, royalties paid to foreign recipients generally trigger a standard non-resident withholding tax of 24% (or 19% for residents of the EU/EEA). These domestic rates can often be lowered or eliminated if a relevant Double Tax Agreement is applied by the Spanish Tax Agency.

Loss Utilization

Tax losses (negative tax bases) generated by a subsidiary company are ring-fenced within Spain. They cannot be directly offset against a foreign parent's profits, but they can be carried forward indefinitely to offset the subsidiary’s own future taxable income.

Transfer Pricing

All intercompany transactions between the Subsidiary company in Spain and the foreign parent (or any other related party) must strictly adhere to the arm's length principle. The Agencia Tributaria (AEAT) closely scrutinises cross-border related-party transactions and may adjust taxable profits where transfer pricing does not reflect market value. 

Setting up a Subsidiary in Spain as a Foreign company

Setting up a Spanish subsidiary as a foreign company is most commonly done as an S.L. (Sociedad de Responsabilidad Limitada). While the Sociedad Anónima (S.A.) remains tailored for larger enterprises. 

• Secure a company name clearance certificate (Certificación Negativa de Denominación Social) from the Central Mercantile Registry.
• Obtain the necessary NIEs for individuals and a NIF for the parent company.
• Choose a bank that accepts corporate share capital deposits. You will need your passport, NIE, and the company name certificate.
• Open a Spanish business account and deposit the share capital to obtain a Certificado de Ingreso de Capital. The minimum share capital for an S.L. is €1, although many foreign investors contribute €3,000. The minimum share capital for an S.A. is €60,000.
• Draft the company's bylaws (Estatutos Sociales) and execute the public deed before a Spanish notary. The founders or their duly appointed legal representatives (under a Power of Attorney) must be present.
• The notary electronically files the deed with the Mercantile Registry. Once registered, the S.L. acquires its own legal personality as a Spanish resident company.
• Register the Ultimate Beneficial Owners (UBOs) in the Central Registry of Beneficial Ownership (Registro Central de Titularidades Reales, RCTIR) managed by the Ministry of Justice.
• Submit Form D-1A to the foreign investment registry through the e-Aforix Platform within one month of incorporation.

Why Do Many Foreign Companies Contribute €3,000 Instead of the €1 Minimum When Forming an S.L. in Spain?

Although Law 18/2022 (create and grow law) reduced the minimum share capital for an S.L. to one euro, companies incorporated with less than €3,000 are subject to additional legal safeguards. They must allocate at least 20% of annual profits to a legal reserve until the combined amount of share capital and reserves reaches €3,000. If the company is liquidated with insufficient assets, shareholders may also face joint and several liability up to €3,000. For this reason, many legal and corporate advisers continue to recommend contributing the traditional €3,000 at incorporation.

Branch Office vs Subsidiary in Spain: The Key Differences

Choosing between a branch office and a subsidiary company in Spain depends primarily on your risk tolerance, tax situation, and administrative capacity. Both are subject to a standard corporate tax rate of 25% on Spanish-sourced income, but they differ significantly in setup, liability, and compliance requirements.

Legal Personality

• Branch: No separate legal personality; it is an organic and legal extension of the foreign parent.
• Subsidiary: Independent Spanish entity (typically an S.L. or S.A.) with its own legal personality.

Liability

• Branch: Unlimited liability. The parent company is directly and unlimitedly liable for all branch obligations; creditors can pursue parent assets globally. 
• Subsidiary: Limited liability. Liability is generally limited to the subsidiary's share capital and any guarantees voluntarily provided by the parent company. 

Practice note: Groups undertaking high-liability activities, such as construction, professional services, or large contractual projects, typically prefer a subsidiary because it limits the foreign parent company's liability. However, this protection is not absolute. Spanish courts may pierce the corporate veil in cases of fraud or abuse, although the threshold is high and this is uncommon in ordinary commercial operations.

Company Name

• Branch: Must use the exact same name as the parent company + "Sucursal en España".
• Subsidiary: Must request a unique name from the Central Mercantile Registry.

Parent Documents 

• Branch: Requires parent bylaws, certificate of good standing, and power of attorney.
• Subsidiary: Requires parent resolution to invest and a power of attorney.

Legalization

• Branch: All parent documents must have the Apostille of the Hague and a sworn translation.
• Subsidiary: Only the specific investment resolution and power of attorney need an Apostille.

Bank Account and Minimum Capital

• Branch: No minimum capital required. You can open a bank account for daily operations, but you do not need a certificate of capital contribution to show the notary.
• Subsidiary: The notary will not sign the incorporation deed until you present a bank certificate proving the minimum capital is frozen in a Spanish account.

Deeds of Incorporation 

• Branch: Notary signs a deed establishing a permanent establishment of a foreign company.
• Subsidiary: Notary signs a deed creating a brand-new, independent Spanish company.

Mercantile Registry

• Branch: Registered as a branch; requires ongoing tracking of parent company changes.
• Subsidiary: Registered as a standalone Spanish corporate entity.

Setup Time (branch office Vs subsidiary in Spain)

• Branch: Typically 3–6 weeks.
• Subsidiary: Typically 4–8 weeks.

Setup Costs

• Branch: Branches are generally cheaper to set up, but extensive parent company documentation can increase apostille, translation, and notarial costs.
• Subsidiary: Higher; involves notarial deeds, capital deposits, and registry.

What are the ongoing compliance obligations for a branch office vs subsidiary in Spain?

Both structures require a Spanish NIF, ongoing AML/KYC compliance, corporate income tax and VAT filings, and payroll reporting where employees are engaged. However, a branch has lighter governance requirements; the parent company's annual accounts must be filed with the Spanish Registro Mercantil, and no shareholder meetings or resolutions are required in Spain. Conversely, a subsidiary has greater governance obligations. It must prepare and file its own annual accounts, hold annual general meetings (AGMs), maintain the UBO register, and pass board and shareholder resolutions.

Which is more tax-efficient, when comparing branch office vs subsidiary in Spain?

Neither structure is universally more tax-efficient; the ideal choice depends heavily on your corporate strategy, home jurisdiction, applicable double taxation treaties, and repatriation of profits.

A branch may favour direct loss consolidation (subject to the parent's home jurisdiction), simpler fund transfers to the head office, and potential treaty relief from the 19% branch profit tax. Branch profits are remitted directly to the parent, so dividend withholding rules do not apply. Conversely, a subsidiary favours dividend exemptions under the EU Parent-Subsidiary Directive, no branch profit tax on distributions, and the reduced 15% corporate tax rate for qualifying newly formed entities. However, losses remain in Spain, and all intercompany transactions must comply with transfer pricing rules and the arm's length principle.

Branch Office vs Subsidiary in Spain: Right Business Structure Option

Choose a branch when

• Testing the Spanish market before full commitment
• The parent wants consolidated loss treatment;
• The operation is short-term or project-based;
• The parent entity carries brand credibility in Spain
• Governance overhead is a priority constraint. 

Choose a subsidiary when

• Building a long-term commercial presence with local employees, clients, and contracts;
• Limiting parent liability is important;
• Attracting local financing or investors
• Contracting with Spanish clients or public bodies that prefer a local entity
• Repatriating profits without branch profit tax
• Accessing Spanish or EU grant and subsidy programmes (many require a local legal entity). 

Can I convert a branch office into a subsidiary later?

Yes, but the conversion is not a seamless administrative process. It requires incorporating a new Spanish subsidiary, transferring assets and contracts, and formally closing the branch — each step has legal and tax implications. Groups that anticipate long-term growth in Spain typically find it more cost-effective to start with the intended final structure rather than convert under operational pressure.

Opening a Business Account for a Branch Office vs Subsidiary in Spain

Regardless of whether you choose a branch office or a subsidiary company, opening a suitable Spanish business account is a critical step when setting up in Spain as a foreign company. Both structures generally require a Spanish business account for SEPA payments, VAT remittances, payroll, and supplier payments. However, the onboarding process differs significantly.

The branch office Spain of a foreign company generally faces the greater banking challenge because they have no separate legal personality, meaning the bank must complete KYC on the entire parent company and its ownership chain. Conversely, a subsidiary company in Spain is generally easier to bank because it is treated as a Spanish resident entity with its own legal personality. However, enhanced due diligence still applies, especially when the structure involves foreign ownership, non-resident directors, family offices, multinational groups, or complex ownership chains.

Can a Foreign Company Open a Spanish Business Account for a Branch Office or Subsidiary?

Yes. The main challenge is usually choosing a provider that supports your ownership structure rather than opening the account itself. While traditional Spanish banks, such as Santander, BBVA, and CaixaBank, often have stricter onboarding policies for foreign-owned businesses, digital banks including N26, Revolut, and Qonto generally do not accommodate many non-resident-owned or complex multi-entity structures. By contrast, specialist providers such as Banq Global are designed for international businesses, supporting foreign-owned Spanish branches and subsidiaries with non-resident directors and shareholders from more than 190 countries while providing a local IBAN for everyday business banking.

FAQs

What is the difference between a branch and a subsidiary in Spain?

In a branch office vs subsidiary in Spain comparison, a subsidiary (S.L.) is a separate legal entity with its own legal personality, meaning the parent's liability is generally limited to its investment. It is subject to Corporate Income Tax (25%) as a Spanish tax resident. Conversely, a branch has no separate legal personality — it is an extension of the parent, which is fully liable.

What documents are needed to register for a branch office Vs subsidiary in Spain?

For a branch: an apostilled notarial deed of establishment, the parent company's incorporation documents, a Spanish NIF application, a legal representative appointment, and form D1-A for the foreign investment declaration where applicable.

For a subsidiary: deeds of incorporation executed before a Spanish notary, evidence of share capital deposit, a Spanish NIF, UBO registration, and form D1-A. Both structures also require a Spanish registered office address.

How long does it take to set up a branch office vs subsidiary in Spain?

Branch registration typically takes three to six weeks once documents are prepared and apostilled. Subsidiary incorporation takes four to eight weeks on average, depending on notarial appointment availability and Registro Mercantil processing times. Timelines can extend if parent company documents require legalisation or certified translation.

What does it cost to register a branch or subsidiary in Spain?

Both structures incur notarial fees, Registro Mercantil filing fees, and legal costs. A subsidiary also requires a minimum share capital deposit of €3,000 for an S.L. Total professional and state fees typically run in the range of €1,500 to €4,000 for either structure. Ongoing costs including accounting, compliance, and annual filings should also be factored in.

Can a branch office in Spain employ staff and sign contracts?

Yes. A branch can hire employees under Spanish labour law and enter into contracts in its own name. The parent company remains legally liable for those obligations, as the branch has no independent legal personality. A subsidiary does the same but as an independent entity, with the parent's exposure limited to its shareholding and any guarantees it has separately provided.

Is a registered branch in Spain treated as a permanent establishment?

Yes. When evaluating a branch office vs subsidiary in Spain, it is important to understand that a registered branch is generally treated as a permanent establishment under Spanish tax law and the majority of Spain's double taxation treaties. This triggers non-residents' income tax obligations on income attributable to Spanish activities and requires the appointment of a legal representative responsible for tax filings in Spain.

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