Spanish Subsidiary vs Branch vs EOR: Which Structure Fits Which Situation?
A Spanish subsidiary fits a launch that needs a separate local company; a branch fits an operation the foreign parent intends to carry on in its own name; an EOR is an employment arrangement to assess when hiring support is the immediate need. If you already have a hire or customer deadline, choose around what must happen on that date. The fastest route to a payroll start may leave your contracting and invoicing plans unresolved. This comparison helps you shortlist the structure, understand the responsibilities it leaves with HQ and test whether it supports the launch you have approved.
What do a Spanish subsidiary, branch and EOR actually give you?
The subsidiary and branch choices determine how your business is established. The EOR choice concerns a provider relationship for employment. Putting them in one table is useful only if you keep that difference visible.
| Decision | Spanish subsidiary, usually an SL | Spanish branch | EOR arrangement |
|---|---|---|---|
| What is created? | A separate Spanish company owned by the group | A Spanish establishment of the existing foreign company | A service relationship with a provider contracting as employer |
| Who carries the customer business? | The subsidiary, for contracts allocated to it | The parent, acting through its branch | The EOR service does not itself establish your customer-contracting business |
| Who employs the team? | The subsidiary can employ directly | The foreign company can employ through the branch | The provider is the contractual employer; legal responsibilities depend on the facts |
| What stays with HQ? | Ownership, funding and group decisions; guarantees or other liability may remain | Direct responsibility for the branch’s business | Commercial decisions, provider oversight and unresolved tax or employment exposure |
| Strong reason to assess it | A distinct Spanish business with its own contracts and operations | A deliberate parent-company operation in Spain | A hiring need where provider support is useful and the legal arrangement is suitable |
The corporate distinction follows the ICEX guide’s branch and subsidiary comparison. The employment qualification is explained below. None of these routes substitutes for any permission your particular activity requires.
When does a Spanish subsidiary fit the launch?
Prioritise a subsidiary when you want the Spanish business to sit inside its own company. That may mean allocating customer contracts, employment, premises and assets to the same local vehicle. It can also make sense where the group envisages a separate ownership interest in that business later.
An SL’s shareholders generally do not answer personally for company debts: see Article 1 of the Companies Act. That gives the structure a meaningful purpose. It does not erase a parent guarantee or liability arising on another legal basis.
The commercial question is whether that separation helps the operation you are building. If procurement requires the supplier to be a Spanish-incorporated company, confirm that exact requirement before selecting a branch or an employment provider. A Spanish customer alone is not evidence that you must incorporate.
The commitment extends beyond formation. Decide who will run the company after the deed: who keeps the books, prepares information for local compliance and gets the numbers into the parent reporting process? These tasks affect the scope and budget you approve now.
Do not let minimum capital decide the route. An SL can have €1 of capital, but below €3,000 the law adds reserve and potential liquidation-liability rules. Those are set out in Article 4. Neither amount tells you how much cash the operation will need.
When is a Spanish branch the better fit?
A branch is worth considering when the parent deliberately wants to remain the legal business behind the Spanish operation. Its representative acts for the parent; there is no separate company between the branch’s business and the head office. The choice can fit an existing contracting model that the group wants to preserve.
This is a decision about responsibility. If the board wants a separate company to carry the local business, a branch does not deliver that result. If the board accepts the parent’s direct exposure, the absence of a new subsidiary may suit the intended structure.
A branch still brings Spanish work. The opening requires a public deed and Commercial Registry registration, as described in the ICEX branch guidance. AEAT requires Spanish permanent establishments to keep separate accounts. Foreign-company branches also face account-deposit requirements and, where relevant, an equivalence test under Articles 375–376 of the Commercial Registry Regulation.
Ask for the branch’s actual accounting, tax and registry scope before treating it as the lighter option. Fewer corporate bodies do not automatically mean a smaller operating workload.
When can an EOR help you start in Spain?
An EOR can be commercially useful when you need employment administration before you have built local capacity. In the arrangement being compared here, the provider signs the employment contract and performs agreed administration. Whether that arrangement is suitable in Spain needs its own legal assessment.
Article 43 of the Workers’ Statute restricts temporary worker supply to duly authorised agencies under the applicable rules. It also addresses mere labour supply and failure to exercise employer functions. If illegal assignment is established, the supplying and receiving employers are jointly liable for obligations to workers and Social Security. A short engagement or a small team is not, by itself, a safe harbour.
An authorised temporary work agency, or ETT, operates under a specific framework. Its proposed assignment must meet the conditions in Law 14/1994, Article 6. The provider’s label or licence does not settle the suitability of every proposed role.
The practical fit is therefore conditional: employment support must be what you need, and the proposed arrangement must work legally on the actual facts. It cannot be selected solely because a provider quotes an earlier start date. If you are still testing the market, EOR vs subsidiary vs contractor adds the contractor route to the comparison.
An EOR engagement also leaves your customer-contracting model to resolve. If the launch depends on a company of your own signing a contract, the employment service does not create it. If the parent will contract, assess that plan in its own right.
There is a fourth option to keep in view. TGSS provides registration requirements for foreign companies, including those without a workplace in Spain. Direct foreign-employer registration may therefore merit assessment where employment is the main need. It makes the overseas business the employer and does not settle its tax position. Our guide to hiring in Spain without a local company develops that narrower decision.
Which route fits three launches with the same headcount?
Two hires can justify very different structures. The following situations are illustrative, not client cases or legal conclusions. Assume ordinary private-sector activity and that immigration requirements are separately addressed.
| Illustrative launch | Route to assess first | What could change the answer? |
|---|---|---|
| Two specialists support an overseas team; the group has no planned Spanish contracting business | An employment route: direct foreign-employer registration or a legally suitable provider arrangement | Actual duties, direction, premises, employer responsibilities and tax presence |
| A sales lead and an implementation manager will build a business whose contracts the group wants in a separate Spanish company | A subsidiary | Customer requirements, funding, contractual allocation and readiness to operate the company |
| Two people deliver the parent’s Spanish operation; the parent deliberately retains the customer obligations | A branch | Acceptance of parent liability, tax treatment, sector rules and establishment formalities |
The useful board question is: which company should be responsible for the business we are about to conduct? Team size then helps you cost the route. It cannot answer that first question for you.
Does an EOR or branch change your Spanish tax exposure?
An employment arrangement does not determine whether the parent has a Spanish taxable presence. AEAT’s permanent-establishment definition covers continuing or habitual places of business and certain agents exercising contracting powers. The applicable treaty must also be considered under Article 4 of the Nonresident Income Tax Law. A registered branch and a permanent establishment are related concepts, but tax exposure can arise without a branch having been registered.
This matters when the proposed Spain-based role changes from supporting work to conducting the parent’s business. Assess the actual authority, activity and use of premises. A job title, an overseas signature or an EOR invoice cannot supply the conclusion on their own.
For a branch, the comparison must account for tax on attributable income, head-office charges and payments back to the parent. AEAT explains specific rules for permanent-establishment taxation. A subsidiary needs its own corporate-tax analysis. Neither route should be chosen from a headline tax rate alone.
Which route can meet your hiring and invoicing deadlines?
A credible launch date needs a ready employer, a ready contracting business and a workable finance process. These are distinct milestones. They may fall on different dates, and an earlier payroll start does not prove the other two are ready.
For a subsidiary or branch, preparation can run in parallel. The parent can assemble corporate documents and powers while People defines roles and terms and Finance prepares funding and reporting. Formal approvals and registrations still create dependencies. ICEX notes that branch-opening formalities are broadly comparable to subsidiary formation; a branch should not be assumed to bypass the foreign-parent documentation work.
| Workstream | Work that can begin early | Dependency before the milestone | Lead owner to agree |
|---|---|---|---|
| Business establishment | Confirm contracting party, corporate authority and required documents | Appropriate establishment, tax setup and activity permissions for the intended transaction | Parent legal team and Spanish advisers |
| Employment | Define duties, terms, workplace arrangements and payroll inputs | Suitable employment route and required employer/worker registrations; provider readiness where used | People lead and employment adviser/provider |
| Finance | Design funding, bookkeeping, invoice flow and HQ reporting | Usable payment arrangements, required registrations and reliable opening data | Parent finance lead and local operator |
TGSS requires employer registration before the relevant activity begins; its registration guidance distinguishes Spanish and foreign-company documentation. Confirm the complete hiring prerequisites for your circumstances before promising a start.
For the corporate-document sequence, see what determines the time to set up a company in Spain. Use the dependencies to build your own schedule; another business’s elapsed time is not a commitment for yours.
How should you compare setup and ongoing costs?
Compare the complete route over the same planning period, using the same people and employment terms. A formation quote and an EOR fee are different parts of different budgets.
Use this planning equation:
Route cost = employment cost + administration and advice + HQ work + setup + any transition or exit work.
For an EOR proposal, separate remuneration and employer costs from the provider charge, onboarding and contractual exit items. For a branch or subsidiary, include the accounting, tax, payroll and corporate work your operation requires. Add internal coordination time on both sides. Show recoverable deposits, capital and other funding movements separately so that cash needed is not confused with expense.
There is no reliable universal employee count at which one route becomes cheaper. Scope, salaries, provider pricing, transactions and the work retained by HQ change the result. The guide to the full cost of operating a Spanish subsidiary provides the wider budgeting framework.
What if the EOR is only a bridge?
Then compare the cost and dependencies of both stages. The reason to use a bridge should be a useful outcome during the gap, with a feasible later transition. It should not simply postpone a structure decision already made necessary by the launch.
Creating the subsidiary does not itself transfer employment. Whether Article 44 business-succession rules apply depends on what is transferred. Establish the appropriate mechanism, employee terms and provider obligations before pricing the move. Allow for any overlapping work and notice requirements rather than assuming a frictionless switch.
Turn the comparison into a Spain launch decision
Your shortlist should now have a reason behind it: a separate company for a distinct business, a branch for an intentional parent operation, or an employment route where that is the immediate requirement. The remaining decision comes from your facts: the first hire date, first customer transaction, roles, contracting party and responsibilities retained by HQ.
Evolutia’s Spain Landing service is the relevant implementation route for a committed expansion. Ongoing support depends on the finance model: Tax & Employment suits a group retaining bookkeeping internally, while Full Subsidiary adds bookkeeping and annual accounts.
Discuss your structure choice and target launch date with Evolutia. Share the planned hires, what the Spanish operation will do and which company you expect to sign customer contracts. The free, bounded Fast-Track conversation and one-page roadmap help clarify the route and next steps. Detailed professional assessment and Spain Landing implementation are separately scoped paid work.