Digital Permanent Establishment, OECD Pillar One, and Source Taxation Erosion in the European Union

Abstract

The rapid growth of the digital economy challenges traditional rules of international taxation. Existing tax systems rely on physical presence to determine business taxation rights. However, digital companies earn significant profits without maintaining physical operations in market states. This situation creates gaps between economic activity and taxing jurisdiction under current law. The concept of Digital Permanent Establishment attempts to address this imbalance in taxation authority. It recognizes sustained digital interaction with users as a basis for taxation rights. The OECD introduced Pillar One to reallocate taxing rights toward market jurisdictions fairly. Pillar One focuses on large multinational enterprises generating profits through digitalized business models. It aims to ensure that profits are taxed where users and consumers create value. Source taxation principles therefore regain importance within modern international tax governance frameworks. These reforms seek fairness, prevent profit shifting, and reduce harmful tax competition globally. The study examines legal challenges, implementation barriers, and policy implications of these evolving taxation rules.