What an LLC Is and How It Works if You Live in Spain

Everyone talks about opening an LLC, but when you live in Spain, almost no one explains the full picture. You hear magical promises on social media and then run headfirst into the technical reality. Here, we’ll look at exactly what it involves, with no shortcuts and with the official documents on the table.

What an LLC is, in short

A Limited Liability Company is an entity created under the laws of a specific US state. The first thing we always distinguish is its US federal tax treatment from the treatment that applies in Spain:

• Tax flexibility in the United States: for the IRS, if the LLC has a single owner, it is considered a disregarded entity by default; if it has two or more owners, it is taxed as a partnership, unless you choose another classification. The IRS explains this in its own entity classification FAQs.

That is the US side. The typical mistake is stopping there and assuming everything works the same way in Spain.

How to form it from Spain and prepare the documents

To get the company up and running, first define what you are going to sell, who the owners are, and who will handle management. Once that is clear, choose the state based on your operations, confirm that the name is available, appoint your registered agent, and file the registration documents. If you choose Wyoming, the filing is completed through the Articles of Organization: the Secretary of State publishes the formation process and provides its official forms. Each state has its own specific rules, so do not decide based only on the initial fee.

Have the name you plan to register, a contact address, the owners’ and managers’ information, the business activity, and your registered agent’s formal acceptance ready. At the same time, draft the operating agreement to establish ownership, capital contributions, authorized signers, and the distribution of funds. Once the state approves the formation, apply for the EIN, making sure the legal name and formation date match exactly, and keep the confirmation with the rest of the company documents.

Remember that having the company documents does not guarantee you a bank account. Each bank will ask you for your passport, proof of your address in Spain, the EIN, the operating agreement, the certificate of formation, beneficial owner information, and proof of genuine business activity. Check what each institution requires before submitting anything. Then keep accounts separate, keep your bookkeeping up to date, and create a clear calendar of obligations in the United States and Spain. Registering the entity does not automatically guarantee either bank approval or tax benefits.

Why there is no automatic answer in Spain

There is no fixed formula that determines how an LLC is taxed in Spain. Everything depends on specific facts: the company’s structure, its legal characteristics, the tax elections made, the owners’ personal circumstances, who manages it, where day-to-day decisions are made, the economic activity, and how profits are allocated. What the IRS determines does not bind the Spanish tax treatment.

There are two essential official references to help you understand the situation:

• The AEAT’s 2025 Corporate Tax Manual discusses in detail foreign entities under the income attribution regime. The Spanish tax authorities analyze whether the foreign entity has a legal nature identical or analogous to Spanish entities under the income attribution regime. They do not look only at the LLC label or what the US tax authorities say: they assess each case individually.
• The AEAT also establishes the conditions under which a legal entity is considered resident in Spain, emphasizing the place of effective management. This criterion is frequently overlooked: a company registered outside Spain may be considered a Spanish tax resident if decisions are managed from Spanish territory.

In short: an LLC is not a switch for shifting income offshore. If you operate and manage everything from Spain, that fact takes precedence.

Treaty and competent authority agreement

To determine whether you can rely on the double taxation treaty, there are two BOE documents you should know:

• The Spain-United States competent authority agreement concerning LLCs, focused on the treatment of these entities under the bilateral framework.
• The protocol amending the double taxation treaty, which is fully in force.

The treaty does not apply automatically to every LLC. Its application requires analyzing the company’s classification, the person generating the income, that person’s residence, and compliance with the treaty requirements. The agreement between the authorities addresses transparent entities and income attributed to US residents, without granting direct benefits to owners residing in Spain. The protocol, for its part, governs income earned through fiscally transparent entities under specific conditions, verifying how each country attributes that income to its residents.

What to review before deciding

1. Where the business is actually managed. If you control and decide everything from Spain, sit down with an advisor before filing a single document.
2. How Spanish law classifies the LLC, whether under the income attribution regime or subject to Corporate Income Tax.
3. Information reporting obligations that apply to you as a taxpayer in Spain.
4. Obligations in the United States. Analyze your company’s classification, the types of transactions, and the reports required by the IRS with a professional; in our practical guide to LLCs and US obligations, we explain why each LLC has different requirements.

So, does an LLC make sense?

It makes perfect sense if it meets an operational need: selling in the US market, getting paid in dollars, connecting to US platforms and payment processors, or presenting a solid corporate presence to international partners. What it should never be is a promise of magical tax avoidance.

If you want to assess the formation steps with peace of mind, you can review our plans and our page for Spain, where we lay out the entire process. And if you operate in other markets or want to compare how these questions are handled in other countries, you may find it useful to review our guide to LLCs in Mexico: key taxes and obligations, or even see the importance of speaking with a real person on WhatsApp before trusting someone with your money to clear up questions before hiring a service.

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Notice. At Maera, we are an administrative service: we provide documentary and operational support so your filings are completed cleanly and in an orderly manner. We are not a law firm or an accounting firm, and this content is for general informational purposes, not legal or tax advice. Verify the information against official sources and consult a qualified professional based on your specific circumstances.