If you are considering bringing your foreign company to Spain, you will encounter three terms that appear interchangeable but carry entirely different legal consequences: Rep Office (Representative Office), Branch (Sucursal), and Subsidiary (a newly incorporated Spanish limited liability company).
Choosing the wrong structure can result in unnecessary tax burdens or, worse still, exposing the entire net worth of your parent company abroad to Spanish liabilities.
This professional guide by ILLAY Legal breaks down the real differences between the three corporate vehicles based on the two factors that truly matter: the asset risk you assume and whether you are legally permitted to invoice and conduct commercial activity in Spain.
But first, let us clear up a common point of confusion.
A preliminary clarification: “Branch” and “Sucursal” are exactly the same thing
In the international business community, it is not unusual to hear these two terms used as though they refer to distinct legal forms. They do not.
Branch is simply the English word for the Spanish Sucursal. The legal framework, the tax obligations, and the level of risk are identical. Throughout this article, we will use both terms interchangeably.
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Option 1: Rep Office (Representative Office): presence without commercial activity
The Rep Office, or Representative Office (Oficina de Representación), is the lightest corporate structure a foreign company can establish in Spain. It has no independent legal personality and no governing body of its own.
However, it carries a fundamental limitation that must be understood before taking any further steps: a Rep Office cannot engage in any economic or commercial activity.
This means you cannot sell goods, you cannot invoice for services rendered to Spanish clients, and you cannot execute commercial contracts on behalf of the company.
What purpose does it serve, then?
It is limited exclusively to auxiliary or preparatory functions: market research, information gathering, coordination activities, marketing campaigns, or preliminary assessments ahead of a more substantial investment.
In essence, it is a way to test the waters without committing significant resources.
Tax treatment of the Rep Office
Because it does not generate revenue in Spain, a Representative Office is generally not subject to Corporate Income Tax (Impuesto de Sociedades). Nor is it required to register with the Commercial Registry (Registro Mercantil), although it must obtain a Tax Identification Number (NIF) from the Spanish Tax Agency (Agencia Tributaria). This NIF will begin with the letter “N,” indicating a foreign entity not established in Spain.
One detail that is frequently overlooked: if you hire employees in Spain through your Rep Office, you will have full employment and Social Security obligations. You will be required to file personal income tax withholdings (Form 111 on a quarterly basis and Form 190 annually) and comply with all applicable Spanish labor regulations.
An important word of caution: if the activities conducted through your Representative Office exceed auxiliary functions and begin to resemble the core business activity of your company, the Spanish Tax Agency may reclassify the structure as a permanent establishment. This would trigger full tax obligations in Spain, as though you were operating a Branch.
Option 2: Branch (Sucursal): operating without incorporating a new company
The Branch represents a step up in operational capacity. It constitutes a permanent establishment of your foreign company on Spanish soil. It has managerial autonomy and a permanent representative, but, much like the Rep Office, it does not possess independent legal personality.
In other words, it is not a new company. It is the same foreign entity operating directly in Spain.
The critical difference from the Rep Office
A Branch is fully authorized to engage in commercial activity. It can sell products, issue invoices for services, execute commercial contracts, and operate without restriction in the Spanish market.
For many companies seeking a rapid operational footprint without incorporating a new entity, the Branch may appear to be an attractive option. But it comes at a cost that is not always properly weighed.
The core issue: unlimited liability exposure
Because a Branch is not a separate legal entity, there is no limitation of liability whatsoever.
If the Branch in Spain incurs a debt, faces a lawsuit, or encounters any legal contingency, the parent company abroad is liable with the entirety of its assets. The risk passes through directly, with no corporate shield in place.
This point is critical and, in our experience, is the one that foreign business owners most frequently underestimate.
Tax treatment and regulatory obligations of the Branch
A Branch is required to maintain its own set of accounts and to file annual financial statements with the Spanish Commercial Registry. From a tax perspective, it will be subject to taxation in Spain on the profits generated here, with the applicable regime depending on the Double Taxation Treaty in force between Spain and the parent company’s country of residence.
Additionally, a Branch must be formally registered with the Commercial Registry, which requires the execution of a public deed before a Spanish notary — with all documentation from the parent company duly apostilled and officially translated.
Option 3: Subsidiary (S.L.): incorporating a new Spanish company
The third option, and the one ILLAY Legal recommends in the vast majority of cases, is to incorporate a Subsidiary.
This involves creating a new Spanish company, typically a Sociedad Limitada (S.L.) (the Spanish equivalent of a limited liability company) in which the shareholder (holder of the equity interests) is your foreign company.
The principal advantage: asset protection
A Subsidiary has its own independent legal personality. It is a distinct legal entity, entirely separate from the parent company.
It functions as a corporate firewall: if the Spanish subsidiary becomes insolvent, faces litigation, or accumulates liabilities, the exposure is limited to the share capital contributed in Spain. The parent company abroad remains protected — absent fraud or a court-ordered piercing of the corporate veil, as would be the case with any commercial entity.
This liability shield is precisely what distinguishes the Subsidiary from the Branch. And it is the reason why the overwhelming majority of SMEs and expanding businesses should opt for this structure.
Additional advantages of the Subsidiary
Beyond asset protection, the Subsidiary (S.L.) offers further benefits that the Branch simply cannot match.
Spanish banks place considerably greater trust in a limited liability company incorporated in Spain than in a branch of a foreign entity. Opening bank accounts and securing financing is significantly more straightforward with an S.L.
Local suppliers and clients likewise perceive a Spanish subsidiary as a more reliable and commercially credible counterpart. For purposes of public procurement or government contracts, a Subsidiary provides a far stronger competitive position.
From an operational standpoint, a Subsidiary enjoys full autonomy: it may define its own corporate purpose (even one that differs from the parent’s), maintain its own accounting and governance structure, and make decisions independently.
Tax treatment of the Subsidiary
A Subsidiary is taxed in Spain as any other Spanish corporation: Corporate Income Tax at the standard rate of 25% (or 15% for newly created entities during their first two fiscal years with positive taxable income), VAT, and applicable withholding taxes.
The parent company, in turn, is only taxed on the profits it receives from the subsidiary (i.e., dividends), and may benefit from applicable Double Taxation Treaties as well as the EU Parent-Subsidiary Directive for intra-EU distributions.
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Side-by-side comparison: Rep Office vs. Branch vs. Subsidiary
| Criterion | Rep Office | Branch (Sucursal) | Subsidiary (S.L.) |
|---|---|---|---|
| Independent legal personality | No | No | Yes |
| Can it invoice and sell? | No | Yes | Yes |
| Parent company liability | Full (mitigated by inactivity) | Unlimited | Limited to contributed capital |
| Minimum share capital | Not required | Not required | From €1 (effective minimum: €3,000) |
| Commercial Registry registration | No | Yes | Yes |
| Corporate Income Tax in Spain | No (if no activity is conducted) | Yes | Yes (25% standard / 15% new entities) |
| Separate accounting required | No (handled by the parent) | Yes | Yes |
| Banking confidence in Spain | Low | Moderate | High |
| Best suited for | Market exploration | Multinationals with centralized control | SMEs and growing businesses |
Which one should you choose? Our professional assessment
After advising dozens of foreign companies on their establishment in Spain, our recommendation at ILLAY Legal can be distilled into three clear scenarios.
Choose a Rep Office if…
You only intend to explore the Spanish market without selling or invoicing. You need a minimal presence for feasibility studies, contact coordination, or marketing activities ahead of a larger investment.
It is the lightest and most cost-effective option, but also the most restrictive. Bear in mind that the moment your activities begin to resemble the core business of your company, the Tax Agency may reclassify you as a permanent establishment.
Choose a Branch if…
You are a large multinational that requires fully centralized control from your foreign headquarters and is prepared to expose the entire net worth of the parent company to the risks arising from operations in Spain.
This may be warranted under very specific tax circumstances or when the corporate group’s structure demands it. But it is not the appropriate choice for the majority of companies.
Choose a Subsidiary (S.L.) if…
You are an SME, a growing enterprise, or any business that wants to operate in Spain while safeguarding its existing assets.
A Subsidiary provides full operational capacity with limited liability, superior access to banking services, greater commercial credibility, and a clear, predictable tax framework. In the vast majority of cases, it is the recommended structure.
Common formalities: what you need to set up your structure in Spain
Regardless of whether you opt for a Branch or a Subsidiary, there are a number of procedural steps common to both structures that must be completed.
Notarial deed (escritura pública). In the case of a Subsidiary, this will be a deed of incorporation for the new company. In the case of a Branch, it will be a deed recording the parent company’s resolution to open a permanent establishment in Spain. All documentation from the foreign entity must be legalized with the Hague Apostille and accompanied by a sworn translation into Spanish.
Registration with the Commercial Registry (Registro Mercantil). Both the Branch and the Subsidiary must be registered with the Commercial Registry of the province where they are to be domiciled. Only upon completion of this registration may they commence full operations.
Obtaining a Spanish NIF. The Tax Identification Number (Número de Identificación Fiscal) is indispensable for any economic activity, the opening of bank accounts, and all dealings with the Spanish Tax Agency.
NIE for the representative or director. If the Subsidiary’s director or the Branch’s designated representative is a foreign national, they will need a Foreigner Identification Number (Número de Identificación de Extranjero).
Tax registration and Social Security enrollment. Once the entity is to hire employees or engage in economic activity, it must register with the Tax Agency (Form 036) and, where applicable, with the Social Security system.
The timeframe to complete the entire process varies depending on the complexity of the case, but generally ranges between 3 and 8 weeks for a Subsidiary incorporated through the standard procedure — and can be reduced significantly if the expedited electronic route is used.
Establish your corporate structure in Spain with full legal certainty
Whichever path you choose, Rep Office, Branch, or Subsidiary, the critical point is that the decision should be supported by a professional analysis tailored to your specific circumstances: your country of origin, the applicable Double Taxation Treaties, the nature of your business activity, the anticipated volume of operations, and your acceptable level of risk.
At ILLAY Legal, we advise foreign companies throughout the entire process of establishing operations in Spain — from the preliminary analysis of the optimal structure through to the incorporation of the entity, international tax planning, and ongoing operational support.
Contact our team to receive specialized counsel and take the next step with the confidence that every detail has been addressed.
Frequently Asked Questions (FAQs)
Can I set up a company in Spain without being a resident?
Yes. There is no legal requirement for the shareholders or the director to reside in Spain in order to incorporate a Subsidiary (S.L.). What you will need is a NIE (Foreigner Identification Number), a notarized power of attorney bearing the Hague Apostille so that an authorized representative can carry out the formalities on your behalf, and, if you are not a tax resident, the appointment of a fiscal representative in Spain. At ILLAY Legal, we can manage the entire process without requiring your physical presence.
Can a Representative Office be reclassified as a permanent establishment without my knowledge?
This is one of the most common, and least understood, risks. If the activities carried out through your Representative Office begin to exceed auxiliary functions (for instance, if your staff starts negotiating or closing contracts with clients), the Spanish Tax Agency may reclassify the structure as a permanent establishment. This would trigger full tax obligations in Spain: Corporate Income Tax, VAT, and all associated filings, potentially with penalties and back-assessments for prior fiscal years that went undeclared.
How much does it cost to incorporate a subsidiary (S.L.) in Spain with foreign capital?
The costs include the share capital contribution (from €1 by law, although the effective minimum liability threshold is €3,000), notary fees, Commercial Registry fees (approximately €665 in registration charges), sworn translation and apostille of the foreign documentation, and professional fees for legal and tax advisory services. The total cost varies considerably depending on the complexity of the case, but for a standard project it typically falls between €3,000 and €6,000, inclusive of the entire process.
What taxes does a foreign company operating in Spain have to pay?
That depends on the structure selected. A Subsidiary (S.L.) is taxed exactly as any other Spanish company: Corporate Income Tax (25% standard rate, 15% for newly created entities), VAT, personal income tax withholdings if it has employees, and informational filings such as Form 200 and Form 232 for related-party transactions. A Branch is subject to the Non-Resident Income Tax (Impuesto sobre la Renta de No Residentes), although in practice the obligations are broadly similar. In both cases, Double Taxation Treaties between Spain and the parent company’s country of residence are critical for optimizing the overall tax burden.
How long does it take to open a branch of a foreign company in Spain?
The timeline depends largely on the speed with which the foreign documentation can be obtained and legalized. As a general reference, Commercial Registry registration and NIF issuance can typically be completed within approximately 6 to 8 weeks through the standard procedure. The principal bottleneck tends to be the documentation from the country of origin: the parent company’s deed of incorporation, the board resolution authorizing the branch, the power of attorney, apostilles, and sworn translations. Engaging specialized counsel from the outset can accelerate the process considerably.
Do I need a fiscal representative in Spain if my company is foreign?
Yes, if your company operates in Spain without being a tax resident — as is the case with representative offices and branches — you are required to appoint a fiscal representative who is either an individual or a legal entity with tax residence in Spain. In the case of a Subsidiary (S.L.), because it is a company incorporated under Spanish law, it does not require a separate fiscal representative; the entity itself is a Spanish tax resident with its own NIF.
