This comprehensive and essential Commentary examines both the origins and effect of the EU's 2015 Payment Services Directive (PSD2). Addressing a significant gap in the available literature, the book is divided into two parts: Part I analyses the legislative provisions of the Directive, while Part II explores the PSD2 implementation experience in selected EU Member States as well as in the United Kingdom.

This book studies relationship dynamics between National Competent Authorities (NCAs) within two agencies governing the European banking sector: the European Banking Authority and the Single Resolution Board. The analysis centres on NCAs policy preferences and the variety thereof, particularly in the context of banking market fragmentation (Euro area vs. non-Euro area countries/banking union "ins" and "outs"). The focus is not so much on the motivations of these preferences, but on the processes and mechanisms that help reach NCAs consensus on prudential matters. Through an interdisciplinary approach rooted in legal analysis and political economy, the book shows how national actors inform decision-making within European agencies in banking, and whether-and how-the reality of differentiated integration within the internal banking market challenges policy creation.