SL vs Sucursal: choosing the right Spanish entity for a US parent

US companies expanding into Spain usually default to whichever structure their lawyer back home suggests first. That's backwards. The right entity depends on how much liability separation you actually need and how fast you need to start invoicing.

Sociedad Limitada (SL): the standalone route

An SL is a separate Spanish legal entity with its own liability shield — the US parent's exposure is limited to its capital contribution. It requires a minimum €3,000 in share capital, a Spanish tax ID (NIF), a notarized deed, and registration with the Registro Mercantil. Expect four to six weeks end-to-end. This is the right call if you're hiring locally, signing local contracts, or want a clean line between US and Spanish liability.

Sucursal (branch): faster, but liability flows upstream

A branch isn't a separate legal entity — it's an extension of the US parent, which means the US company is directly liable for the branch's obligations in Spain. In exchange, setup is faster and there's no separate capital requirement. It suits companies testing the Spanish market before committing, or running a project with a defined end date.

The tax difference that actually matters

Both pay the same 25% corporate tax rate on Spanish-sourced profits. The real divergence is in profit repatriation: an SL distributes dividends, which can trigger withholding tax depending on the US-Spain treaty position; a branch remits profits directly, generally with different treaty mechanics under the Branch Profits framework. Get this modeled before incorporating — switching structures later means starting the registration process over.