What Is an LLC, and What Should You Consider If You Live in Spain?

LLC has become a familiar term among Spanish-speaking founders. What is rarely explained well is what happens when the person behind it lives in Spain. Here is the technical side, with no shortcuts and with the official sources at hand.

What an LLC is, in brief

A Limited Liability Company is a business entity created under the laws of a U.S. state. Its U.S. federal tax classification must be distinguished from its treatment in Spain:

• Tax flexibility in the United States: for IRS purposes, a single-member LLC is treated by default as a disregarded entity, while an LLC with two or more members is treated as a partnership, unless a different election is made. You can verify this in the IRS entity classification FAQ.

That covers the United States. The problem is that a lot of content stops right there, while the part that affects you if you live in Spain begins afterward.

Why there is no automatic answer in Spain

There is no rule stating that "an LLC is always taxed this way in Spain." Its classification depends on specific facts: how it was formed, the entity’s characteristics, its tax elections, the circumstances and residence of its members, who manages it, where decisions are made, what activities it carries out, and how its results are attributed. Its U.S. classification does not automatically carry over to Spain.

Two official references define the framework:

• The AEAT’s 2025 Corporate Tax Manual includes a section on foreign entities under the income attribution regime. The AEAT refers to foreign entities whose legal nature is identical or analogous to that of Spanish entities under the income attribution regime. This comparison requires examining the specific entity, not just its initials or its IRS classification.
• The AEAT also explains when a legal entity is considered resident in Spain, including the place of effective management criterion. This is the point most often overlooked: a company formed abroad may ultimately be considered resident in Spain if its effective management is located there.

The practical consequence is that an LLC does not work like a switch that moves your income "out" of Spain. If you run the business from Spanish territory, that fact matters.

Treaty and competent authority agreement

There are two texts published in the BOE that you should have on hand when considering access to treaty benefits:

• The Spain-United States competent authority agreement concerning LLCs, which addresses how this type of entity is treated for treaty purposes.
• The protocol amending the double taxation treaty, which is in force and applies to the relationship between both countries.

The existence of a treaty does not mean that it automatically applies to every structure. Its application depends on the entity’s classification, who earns the income, that person’s residence, and their eligibility under the treaty. The agreement addresses LLCs treated as transparent entities and the attribution of income to U.S. residents; it does not automatically grant benefits to a member who is resident in Spain. The protocol covers income earned through transparent entities under its conditions: you need to determine how the relevant country attributes that income to its resident.

What to review before deciding

1. Where the business is actually managed. If all decisions are made from Spain, you need to analyze this with an advisor before forming anything.
2. How the LLC is classified for Spanish tax purposes: under the income attribution regime or as an entity subject to Corporate Income Tax.
3. Reporting obligations that may apply to you as a Spanish tax resident.
4. Obligations in the United States. Review the classification, transactions, and applicable filings with a professional; our practical guide to LLCs and U.S. obligations explains why not all LLCs have the same obligations.

So, does an LLC make sense?

It may make sense for operational reasons: selling to customers in the United States, receiving payments in dollars, working with U.S. platforms or suppliers, or having a structure that partners recognize. What it should not be is a promise of automatic tax savings, because it is not.

If you want to review the administrative process at your own pace, it is explained in detail on our U.S. LLC page and our Spain page.

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Notice. Maera is an administrative service: we support you with the operational and documentation side. We are not a law firm or an accounting firm, and this article provides general information, not legal or tax advice for your specific situation. Before deciding, check the official sources linked above and, if your situation requires it, consult a professional in your country.