Branch Office in Spain: Legal Requirements, Tax Rules and When a Subsidiary Makes More Sense
Lawants Guide · Company Formation, Spain A branch in Spain can look like the straightforward route to market: no new company, no share capital, faster than a subsidiary. In practice, most foreign companies discover within a few years that the structure they chose was the wrong one for what their Spanish operations actually became.
This guide covers what a branch in Spain is, how it compares to a permanent establishment and a subsidiary, what registration and tax involve for UK and US parent companies, and when each structure makes sense, so you can decide before you commit, not after you have already chosen the wrong one.
Lawants works exclusively with foreign companies in Spain, with over twenty years of experience helping them choose and set up the right structure from the outset.
What Is a Branch Office in Spain?
A branch office in Spain, known as a sucursal, is a permanent secondary establishment of a foreign parent company.
Opening a branch in Spain does not create a new legal entity: the branch and its parent company are, for all legal purposes, the same organisation. This has one immediate and significant consequence: the parent company is directly and fully liable for everything the Spanish branch office does in Spain, including its debts, its contracts, and its tax obligations.
Unlike a subsidiary, a foreign company branch in Spain has no shareholders of its own, no administrative body, and no separate corporate identity under Spanish law. It operates under the same corporate purpose as its parent and cannot carry out activities outside that scope. What it does have is a Spanish tax presence: it must be registered with the Agencia Tributaria, obtain a NIF “W” tax identification number, and comply with Spanish tax, accounting, and labour obligations from the moment it begins operating.
A branch office in Spain is also, for Spanish tax purposes, treated as a permanent establishment of its foreign parent. This means it is taxed on the profits attributable to its Spanish activity under the Non-Resident Income Tax (IRNR) rules, at the standard corporate tax rate of 25%. The fact that it is not a Spanish company does not reduce its tax burden: the rate is identical to what a locally incorporated subsidiary would pay.
A branch and a representative office (oficina de representación) are not the same thing.
A representative office uses a NIF “N” and carries out no commercial activity in Spain. It has no tax obligations and is not considered a permanent establishment. A branch uses a NIF “W”, issues invoices, generates taxable income in Spain, and is fully subject to Spanish corporate and VAT rules.
Branch vs Subsidiary vs Permanent Establishment in Spain: Which Structure Is Right for You?
This is the decision that matters most, and the one most foreign companies get wrong by defaulting to whichever option seems simpler rather than whichever actually fits their situation.
The three main structures for operating in Spain sit on a spectrum from least to most formal, but the right choice depends on factors that have nothing to do with simplicity:
- A permanent establishment is a tax concept: it describes a level of economic presence in Spain that makes a foreign company’s profits taxable here, regardless of whether any formal structure has been registered.
- A branch is a registered legal structure: a formal extension of the foreign parent, recorded at the Mercantile Registry, that automatically constitutes a permanent establishment for Spanish tax purposes.
- A subsidiary is a separate Spanish company with its own legal personality, distinct from the foreign parent in both law and liability.
Although these three concepts are often used interchangeably, they serve different legal, tax and commercial purposes. Every branch is a permanent establishment. Not every permanent establishment is a registered branch.
For a better understanding of the differences, read our guide to branch vs subsidiary (S.L.) in Spain.
| PE (unregistered) | Branch (sucursal) | Subsidiary (S.L.) | |
|---|---|---|---|
| Legal personality | None | None | Separate Spanish entity |
| Liability | Parent fully liable | Parent fully liable | Limited to capital |
| Formation | Tax registration only (NIF “W”) | Notarial deed + Mercantile Registry | Notarial deed + Registry + capital deposit |
| Minimum capital | None | None | €3,000 (S.L.) |
| Corporate tax | 25% on attributable profit (IRNR) | 25% on attributable profit (IRNR) | 25% (IS). 15% first 2 years if qualifying |
| Profit repatriation | 19% WHT (exempt EU; treaty-dependent UK/US) | 19% WHT (exempt EU; treaty-dependent UK/US) | Dividends. Exempt EU (Parent-Sub Directive) |
| Mercantile Registry | No | Yes | Yes |
| Annual accounts | No | Yes | Yes |
| Best for | Activity already present without a deliberate choice. Limited, time-bound operations. | Formal local presence. Specific project. Strong HQ link needed. | Long-term operations. Employees. Growth. Liability protection. |
When a Permanent Establishment Is the Starting Point
A permanent establishment arises when a foreign company’s activity in Spain meets certain legal thresholds, whether through a fixed place of business, a dependent agent who habitually concludes contracts, or a construction or installation project exceeding the applicable duration. It is rarely a deliberate first choice: it is more commonly a situation foreign companies find themselves in without having made a formal decision.
For companies with limited, exploratory, or time-bound activity in Spain, operating through a PE (with tax registration but no formal branch structure) can be appropriate. It carries the same tax rate as a branch but with fewer administrative formalities. The moment operations grow, however, the absence of a local legal structure becomes a liability, both in terms of risk exposure and in terms of how Spanish clients, banks, and counterparties perceive the company.
When a Branch Makes Sense
A branch is the appropriate choice when the foreign parent needs a formal, registered presence in Spain, one that can sign contracts, open bank accounts, issue invoices under a Spanish entity, and be represented before Spanish authorities, but where the activity is still closely tied to the parent and a full subsidiary is not yet warranted.
The scenarios where a branch genuinely fits tend to be specific: a construction or infrastructure project of defined duration, an engineering firm executing a long-term contract, a financial institution required by regulation to operate through a branch rather than a separate company. What these situations have in common is that the Spanish activity is a well-defined extension of the parent’s work, not an independent business unit meant to grow on its own.
A branch office in Spain tends to work best when:
- the Spanish activity is linked to a single, defined project;
- operations remain closely controlled by headquarters with no independent local management planned;
- there is no expectation of local hiring beyond one or two people;
- long-term expansion in Spain is not yet certain.
For companies expecting recurring commercial activity, local hires, and long-term growth in Spain, a subsidiary (Sociedad Limitada) is almost always the more scalable and lower-risk structure from the outset.
When a Subsidiary Is the Right Answer
For most foreign companies planning to develop the Spanish market over time, hire local employees, build a customer base, and operate with any degree of independence from the parent, the Spanish subsidiary (S.L.) is the structurally correct choice. The liability protection alone, which limits the parent’s exposure to the capital contributed rather than the full obligations of the Spanish operation, is decisive for any business with commercial, employment, or regulatory risk in Spain.
The pattern we see most often is a company that opens a branch to avoid the complexity of incorporation, grows its Spanish activity, and then faces the cost and disruption of converting the branch into a subsidiary two or three years later. That conversion is possible but not simple, requiring a contribution of branch assets and liabilities to a newly formed S.L., with legal, tax, and accounting implications throughout. Starting with the right structure is almost always cheaper than fixing the wrong one.
The structure you choose at the start shapes everything that follows in Spain.
Most foreign companies choose between a branch and a subsidiary based on perceived simplicity, not on what actually fits their Spanish operations. The right answer depends on what you plan to do in Spain, how long you plan to do it, and what commercial and legal exposure you are willing to carry in the parent company.
The wrong structure costs more to fix later than to get right from the start. Lawants has helped foreign companies make this call for over twenty years.
Managing Director, Lawants
Response within 24 business hours
Advantages of Opening a Branch Office in Spain
For specific situations, opening a branch office in Spain offers genuine practical advantages over incorporating a full subsidiary.
- No minimum capital required. Unlike an S.L., which requires €3,000, a branch can be registered without any capital deposit.
- No separate Spanish company. The branch operates as a direct extension of the parent, without creating an independent legal entity to manage, govern, or eventually dissolve.
- Direct control from headquarters. The parent company retains full operational control without needing to appoint a local board or manage a separate Spanish corporate governance structure.
- Suited to project-based activity. For a defined construction, installation, or infrastructure project with a clear start and end date, a branch is a proportionate structure.
- Useful in regulated sectors. Certain industries, including banking and insurance, are legally required or commercially expected to operate through a branch rather than an independent subsidiary.
- Lower setup complexity in specific cases. Where the activity is time-limited and the NIF “W” route applies (no notary required), a branch can be registered more quickly than a full subsidiary.
Disadvantages of a Branch in Spain
The same characteristics that make a branch simple to open also create structural limitations that become increasingly significant as Spanish operations grow.
- Parent company fully liable. There is no liability shield. Every debt, contract, and legal obligation of the Spanish branch falls directly on the foreign parent, with no cap.
- Lower operational flexibility. The branch is legally bound to the same corporate purpose as the parent and cannot act outside it. It cannot define its own commercial strategy or pursue opportunities independently.
- Harder to scale. As headcount grows, revenue becomes recurring, and the Spanish operation develops its own identity, the branch structure creates friction. Converting to a subsidiary later is possible but adds legal, tax, and accounting complexity.
- Less attractive to investors. A branch has no share capital structure of its own. Bringing in a local partner, selling a stake in the Spanish business, or attracting Spanish institutional clients who require a local entity is structurally difficult.
- More difficult exit. Winding down a subsidiary is cleaner than unwinding a branch, where assets and liabilities must be reabsorbed by the parent rather than transferred through a simple share sale.
Requirements to Open a Branch in Spain
Registering a branch in Spain requires setting up a formal legal structure with both the Mercantile Registry and the Spanish tax authority. Spanish branch office registration is less complex than incorporating a subsidiary, but it is not trivial, and the timeline depends heavily on how quickly the parent company can produce the required documentation in its home jurisdiction.
The documents required from the parent company are:
- a resolution by the parent company’s governing body authorising the opening of a branch in Spain;
- the parent company’s certificate of incorporation and articles of association, both apostilled under the Hague Convention and translated into Spanish by a sworn translator (traductor jurado);
- a power of attorney in favour of the appointed branch representative in Spain;
- proof of the parent company’s good standing in its home jurisdiction.
On the Spanish side, the process requires:
- appointment of a branch representative (gerente), who must hold a Spanish tax identification number (NIE) and is granted full authority to represent the branch before Spanish authorities;
- execution of the public deed of establishment (escritura de constitución de la sucursal) before a Spanish notary;
- registration at the Registro Mercantil (Companies Registry) of the province where the branch will be located;
- registration with the Agencia Tributaria to obtain the NIF “W” tax identification number;
- registration for VAT and, where applicable, for Social Security if the branch employs staff.
The Spanish registration process itself is often relatively fast once all required documentation is available. In practice, timelines are usually influenced by how quickly the parent company can provide corporate documents, powers of attorney, apostilles and any required translations. For this reason, preparing the documentation correctly from the outset is often more important than the registration step itself.
How to Open a Branch in Spain: Step by Step
The steps below follow the standard process for a foreign company opening a registered branch in Spain through a notarial deed. For companies whose branch arises from a specific, time-limited operation (such as a single construction contract), a simplified route exists: it is possible to obtain the NIF “W” directly from the AEAT without going through a notary, by submitting a private document justifying the operation and a power of attorney for the fiscal representative.
1. Parent company resolution
The board or governing body of the foreign parent passes a formal resolution authorising the opening of a branch in Spain, appointing a representative, and granting them the necessary powers. This resolution must be notarised and apostilled in the parent company’s home country.
2. Document apostille and sworn translation
All foreign documents (resolution, articles of association, certificate of incorporation) must be legalised with an Apostille of the Hague Convention and translated into Spanish by an officially recognised sworn translator. This step is often where the timeline extends, particularly for US companies where apostille timelines vary significantly by state.
3. Obtain NIE for the branch representative
The appointed branch representative must hold a Spanish NIE (Número de Identificación de Extranjero). If the representative does not already have one, this must be obtained before proceeding. Lawants handles this step as part of the overall process.
4. Execution of public deed before a Spanish notary
A Spanish notary drafts and executes the deed of establishment (escritura de constitución de la sucursal). This document sets out the branch’s name, registered address, activity, and the powers of its representative. The representative (or their proxy) must be present.
5. Registration at the Mercantile Registry
The notarial deed is filed at the provincial Registro Mercantil. Once registered, the branch has formal legal existence in Spain. This step typically takes around five working days once the deed is submitted in complete form.
6. Tax registration and NIF “W”
The branch is registered with the Agencia Tributaria using Modelo 036. The AEAT issues the NIF “W” tax identification number, which is required for all commercial operations, invoicing, and VAT compliance in Spain.
7. VAT registration and Social Security (if applicable)
The branch registers for VAT and, if it will employ staff in Spain, registers with the Spanish Social Security system. Payroll withholding obligations apply from the first hire, independently of whether the branch’s overall tax position has been finalised.
Opening the branch is usually the easy part. Coordinating the documentation is what slows most companies down.
Parent company resolutions, powers of attorney, apostilles, sworn translations, NIE applications, notarial deeds and tax registrations must all fit together correctly. A mistake in one document can delay the entire process.
Lawants coordinates the entire branch registration process from start to finish.
One team for legal, tax, corporate and registration formalities. Offices in Barcelona and Madrid.
Managing Director, Lawants
Response within 24 business hours
Branch Income and Tax in Spain
A branch in Spain is treated as a permanent establishment of its foreign parent and taxed accordingly under the Non-Resident Income Tax (IRNR) rules. The tax rate on profits attributable to the Spanish branch is 25%, identical to the corporate income tax rate applied to Spanish resident companies.
What Is Taxable
Only profits attributable to the Spanish activity are taxable in Spain. Profit attribution follows the arm’s length principle: the branch is treated as if it were a separate enterprise performing comparable functions independently. This requires maintaining separate accounting records for the Spanish operation, which is a legal obligation regardless of whether the branch uses the same accounting systems as the parent.
What Is and Is Not Deductible
Spanish law applies a specific and strict rule to deductions for branches. Payments made by the branch to its own head office, including royalties, interest on internal loans, management fees, and technical assistance fees, are not tax-deductible in Spain. Spain treats the branch and its parent as a single legal entity, so internal charges between them are not recognised for tax purposes.
What is deductible is a reasonable allocation of the parent company’s general and administrative expenses to the branch, provided the allocation follows consistent criteria based on turnover, direct costs, or fixed asset investment, and is properly documented.
Branch Profits Remittance Tax
When a branch repatriates profits to its foreign head office, Spain may apply an additional withholding tax of 19% on the amount transferred. How this applies depends on where the parent company is based:
- EU parent companies: exempt from branch profits remittance tax. The 19% withholding does not apply.
- US parent companies: the US-Spain Double Taxation Treaty specifically establishes a branch profits tax on repatriated earnings. The treaty rate applies, but the tax is not eliminated entirely as it is for EU companies.
- UK parent companies: post-Brexit, UK companies no longer benefit from EU exemptions. The applicable rate depends on the UK-Spain Double Taxation Treaty provisions, and correct treaty documentation is required to claim any reduction.
- Non-treaty countries: the full 19% withholding applies unless a specific treaty provides otherwise.
A subsidiary distributes dividends rather than repatriating branch profits.
For EU parent companies, dividends from a Spanish subsidiary are generally exempt from withholding tax under the EU Parent-Subsidiary Directive (provided the parent holds at least 5% of the subsidiary for at least one year).
For UK and US parent companies, the applicable treaty governs the dividend withholding rate. The practical difference is that a subsidiary gives more flexibility in how and when profits are distributed, and the legal framework for that distribution is cleaner and better established than the branch profits remittance mechanism.
Branch Office Compliance: Ongoing Obligations
Once registered, a branch in Spain is subject to a compliance calendar that is, in most respects, as demanding as that of a locally incorporated subsidiary. The absence of separate legal personality does not reduce the administrative burden: it simply means the obligations fall on the parent company rather than on an independent Spanish entity.
The key ongoing obligations are:
- separate accounting records maintained in accordance with Spanish accounting standards (Plan General Contable), sufficient to determine the profits attributable to the Spanish activity;
- annual accounts prepared and filed at the Registro Mercantil, following the same fiscal year as the parent company (not necessarily the Spanish calendar year);
- corporate income tax return (IRNR) filed annually;
- quarterly VAT returns and, where applicable, annual VAT summary;
- payroll withholding and Social Security contributions if the branch employs staff in Spain;
- Modelo 210 or Modelo 200 depending on how the branch’s IRNR position is structured;
- any reporting obligations toward the parent company under transfer pricing rules where intercompany transactions exist.
One detail that often surprises foreign companies: the branch’s fiscal year follows that of the parent, not the Spanish calendar year. This can create complexity when the parent’s year-end does not align with Spanish filing deadlines, requiring careful planning of submission timelines.
Can a Branch Be Converted into a Subsidiary Later?
Yes, but it is not straightforward. The standard route is a contribution of a branch of activity (aportación de rama de actividad): the branch’s assets and liabilities are transferred to a newly incorporated Spanish S.L., which the parent company owns. Under certain conditions, this can be structured as a tax-neutral reorganisation under Spanish corporate reorganisation rules.
In practice, the conversion requires legal, accounting, and tax planning work to identify all assets and liabilities attributable to the branch, value them correctly, structure the transfer to minimise tax friction, and complete the incorporation of the new subsidiary. It is a manageable process but rarely a cheap one. The recurring pattern is that companies that could have incorporated directly at the outset end up spending more on the conversion than they saved by opening a branch. When the planned activity justifies a subsidiary from the start, incorporating directly is almost always the more efficient path.
How Lawants Supports Foreign Companies Opening a Branch in Spain
Lawants works exclusively with foreign companies and entrepreneurs operating in Spain. Opening a branch is often presented as the quickest route into the Spanish market, but the real question is whether it will still be the right structure once the business starts hiring locally, signing contracts, generating recurring revenue, or expanding its operations.
For this reason, our role goes beyond registration formalities. We help international businesses assess whether a branch is the most appropriate solution, understand the tax and compliance implications of operating in Spain, and build a structure that remains efficient as the business grows.
Many of the branch reviews we handle involve companies that initially chose the simplest option available and later discovered that their operational reality had evolved.
The right structure is determined by where your Spanish operation is heading, not only by where it is today.
Over twenty years assisting foreign companies in Spain, exclusively, through an integrated team of lawyers, tax advisors and accountants.
Whether you are opening your first branch in Spain, reviewing an existing structure, or considering a transition to a Spanish subsidiary, Lawants provides coordinated legal, tax and accounting support through a single point of contact.
FAQ: Branch Office in Spain
The questions below address some of the most common legal, tax and practical issues foreign companies encounter when considering a branch in Spain.
Is a branch in Spain considered a permanent establishment?
Yes. A registered branch in Spain is automatically considered a permanent establishment for Spanish tax purposes. This means it is subject to Non-Resident Income Tax (IRNR) on profits attributable to its Spanish activity, at the standard 25% corporate tax rate. The reverse, however, is not always true: not every permanent establishment is a formally registered branch. A company can have a taxable permanent establishment in Spain through a dependent agent or a fixed place of business, without having gone through branch registration at the Mercantile Registry.
What is a branch office called in Spain?
A branch office in Spain is called a sucursal. It is a permanent secondary establishment of a foreign parent company, registered in Spain but without a separate legal personality. The parent company remains fully liable for all its obligations.
What is the difference between a branch and a subsidiary in Spain?
A branch (sucursal) has no separate legal personality: it is an extension of the foreign parent, which remains fully liable for everything the branch does in Spain. A subsidiary is a new, independent Spanish company (typically an S.L.) with its own legal identity, its own rights and obligations, and liability limited to its own capital. The parent’s exposure is confined to what it invested. For most foreign companies planning to operate in Spain on an ongoing basis, the subsidiary provides meaningfully better protection and operational flexibility.
Do I need minimum capital to open a branch in Spain?
No. A branch in Spain has no minimum capital requirement. You do not need to deposit any funds into a Spanish bank account before the branch can be registered or begin operating. This contrasts with a subsidiary (S.L.), which requires a minimum share capital of €3,000.
Can a branch in Spain employ people?
Yes. A branch can hire employees in Spain and is subject to the same labour and Social Security obligations as any Spanish employer. Payroll withholding (retenciones IRPF) and Social Security contributions apply from the first hire, independently of the branch’s overall tax registration status.
What is the branch profits remittance tax in Spain?
When a Spanish branch transfers profits to its foreign parent, Spain may apply a withholding tax of 19% on the repatriated amount. This tax does not apply to EU parent companies. For US parent companies, the US-Spain Double Taxation Treaty specifically provides for a branch profits tax on repatriated earnings. For UK parent companies, the applicable rate depends on the UK-Spain treaty and requires correct documentation to be claimed.
How long does it take to open a branch in Spain?
The Spanish-side steps (notary, Mercantile Registry, AEAT) can be completed in roughly two to three weeks once all documents are ready. The binding constraint is almost always the parent company’s documentation: apostille timelines vary by country. UK apostilles typically take three to five working days. US apostille timelines vary by state and can take two to four weeks. Total realistic timelines from decision to registered branch are four to eight weeks for most foreign companies.
Does a branch in Spain need to file annual accounts?
Yes. A branch registered at the Mercantile Registry is required to prepare and file annual accounts in Spain. These follow Spanish accounting standards and must reflect the branch’s activity separately from the parent company’s consolidated accounts. The branch’s fiscal year follows that of the parent company, not necessarily the Spanish calendar year.
Can a branch be converted into a subsidiary later?
Yes. The standard route is a aportación de rama de actividad (contribution of a branch of activity), where the branch’s assets and liabilities are transferred to a newly incorporated S.L. Under certain conditions this can be structured as a tax-neutral reorganisation. In practice, the conversion requires careful legal, accounting, and tax planning and is rarely as straightforward as simply incorporating from the start. Companies that foresee long-term operations in Spain generally benefit from incorporating a subsidiary directly rather than converting later.
Can a foreign company operate in Spain without a branch?
Yes, in certain circumstances. A foreign company that sells into Spain without a fixed place of business, a dependent agent, or employees based in Spain may operate without any formal Spanish structure, though this depends on the nature and volume of the activity. If that activity crosses the threshold for a permanent establishment under Spanish domestic law or the applicable tax treaty, registration obligations arise regardless of whether a formal branch has been opened. Companies that simply obtain a NIF “N” (representative office) can also carry out limited, non-commercial functions in Spain without creating a taxable presence.
Does a branch office in Spain need a Spanish bank account?
There is no strict legal requirement to maintain a Spanish bank account, but in practice it is almost always necessary. Paying local employees, settling Spanish VAT and tax obligations, receiving payments from Spanish customers, and managing day-to-day operational expenses are all significantly easier with a local account. Spanish banks vary considerably in their willingness to open accounts for foreign branches, and the process can be more demanding than for a locally incorporated subsidiary.
Can a branch in Spain own property?
A branch does not own property in its own name, since it has no separate legal personality. Property acquired for use by the Spanish branch is legally owned by the foreign parent company. This means any real estate, equipment, or other assets held for the branch’s use are assets of the parent, and any disposal or transfer involves the parent directly. Companies expecting to hold significant Spanish assets often find a subsidiary a cleaner structure for this reason.
Does a branch in Spain need a resident director?
A branch does not have a director in the corporate sense: it has no administrative body of its own. What it does require is an appointed branch representative (gerente) with full powers to act on behalf of the parent before Spanish authorities. This person must hold a Spanish NIE. They do not need to be resident in Spain, but they must be available and authorised to handle all dealings with the Agencia Tributaria, the Registro Mercantil, and other public bodies.
Related Articles
- Subsidiary in Spain: How to Incorporate and When It Makes Sense
- Permanent Establishment in Spain: Guide for Foreign Companies
- Types of Company in Spain: Which Structure to Choose
- Fiscal Representative in Spain: Who Needs One and What They Do
- Company Registration in Spain: Full Guide for Foreign Investors
- US-Spain Double Taxation Treaty: What Companies Need to Know
- UK-Spain Double Taxation Agreement
