International Tax: Global Expansion Without Tax Risk

International tax in Spain governs the cross-border tax obligations of Spanish-resident entities and individuals operating abroad, as well as foreign entities with Spanish-source income, within a framework shaped by Spain's network of over 90 double taxation treaties (based on the OECD Model), EU Directives ATAD I and II (transposed into the Corporate Income Tax Act, LIS), and the OECD's BEPS package — including Pillar Two's 15% global minimum rate (in force in Spain from 2024 via Directive 2022/2523). Key risk areas include inadvertent permanent establishments under Art. 5 of applicable treaties, controlled foreign company rules (Art. 100 LIS), and mandatory disclosure of cross-border arrangements under DAC6 (Royal Decree-Law 3/2020).

International taxation requires an integrated perspective that combines knowledge of Spanish law with that of destination countries. Our team works in close coordination with local advisers across key jurisdictions to ensure that every structure is robust, efficient, and defensible before any tax authority.

Why Poorly Managed International Tax Can Undermine Your Global Expansion

A Spanish company that expands internationally without tax planning can end up paying tax twice on the same profits: once in the destination country and again in Spain. But double taxation is only one of the risks. An employee sent abroad for six months can inadvertently create a permanent establishment that generates tax obligations in that country for the entire company’s activity. Collecting dividends from a Latin American subsidiary without applying the correct treaty can attract a 30% withholding that was fully avoidable. CFC rules allow the AEAT to tax profits of subsidiaries in low-tax jurisdictions even when they have not been distributed. And BEPS reporting requires genuine economic substance in each jurisdiction, otherwise the entire structure is exposed to reclassification.

Our International Tax Structure Design Process

Our international tax specialists analyse every group structure from the perspective of all relevant territories. We identify applicable double taxation treaties between Spain and operating countries — Spain has over 90 treaties in force — and apply each clause to reduce withholding on dividends, interest, and royalties. We design economic substance policies for holding and intermediate structures that withstand post-BEPS scrutiny. We prepare Country-by-Country Reports, Master Files, and DAC6 filings where required. We act as the single coordinator with local advisers in each jurisdiction, preventing the client from managing multiple counterparts with partial and inconsistent views.

Regulatory Framework: BEPS, ATAD, and Pillar Two

The international regulatory framework is shaped by OECD Model-based Double Taxation Treaties, EU Directives ATAD I and II transposed into Spanish law through the Corporate Income Tax Act, and the OECD’s fifteen-action BEPS package. Pillar Two establishes a global minimum rate of 15% for groups with turnover above EUR 750 million, in force in Spain since 2024 through transposition of Directive 2022/2523. DAC6, transposed via Royal Decree-Law 3/2020, requires disclosure of potentially aggressive cross-border arrangements. Art. 100 LIS governs Spain’s CFC rules on controlled foreign companies.

Real Results in International Taxation: Quantified Double Taxation Savings

• International structure that eliminates double taxation and withstands BEPS scrutiny with documented economic substance in each jurisdiction.
• Withholding taxes reduced to treaty minimum rates on dividends, interest, and royalties across all relevant jurisdictions.
• Full compliance with DAC6, CbCR, CRS, and local reporting obligations with no gaps.
• Frictionless international coordination: a single point of contact for all countries, with a coherent and documented strategy.
• Quantified tax savings in the first year, typically exceeding the cost of the service for groups with active structures.

International taxation requires a vision that integrates knowledge of Spanish law with that of the destination countries. Our team works in close coordination with local advisers in the principal jurisdictions to ensure every structure is robust, efficient, and defensible before any tax authority.

The internationalisation of a company is a transformative milestone that multiplies business opportunities, but also tax exposure. Tax authorities worldwide have intensified cooperation under the OECD’s BEPS framework, and information flows between jurisdictions with unprecedented speed. In this context, a well-designed international structure from the outset is far more efficient and secure than a reactive adjustment in response to a coordinated audit.

The first step is always the analysis of applicable double taxation treaties. Spain has over 90 bilateral treaties that can significantly reduce withholding on dividends, interest, and royalties. However, correct application of these treaties requires knowledge of their anti-abuse clauses, beneficial ownership requirements, and limitation of benefits provisions — elements frequently overlooked that can invalidate the claimed benefit. Our international tax team analyses each income flow to determine the optimal treatment.

Transfer pricing is the other major risk vector in any international group. Transactions between related parties must be priced as if conducted between independent third parties, and tax authorities cross-reference Country-by-Country Report data to identify inconsistencies. We coordinate the group’s transfer pricing policy with a global perspective that prevents bilateral adjustments and residual double taxation.