The global transformation of the economy towards a digital one has fundamentally restructured business operations, economic models, and tax practices. With digital technologies and electronic communications embedded within industries, the digital economy has fostered innovative business models, transformed user behaviors, and increased operational efficiency. However, such a revolution has come at the price of exposing the limitations of traditional international tax models based on physical presence and tangible properties. The entry of borderless, intangible, and platform-based economic activities necessitates urgent tax redesign, especially amid digital businesses, which increasingly interact across borders yet leave no traditional physical presence. This research describes the revolutionary influence of the digital economy on cross border taxation, deconstructs the traditional conceptualization of the permanent establishment (PE), and evaluates the emergent principle of “tax where value is generated” based on recent literature as well as emerging global reform approaches.