What does the law actually require of banks, and where does the mandate end? Financial Crime Compliance has become an essential part of banking, involving extensive customer investigations, transaction monitoring and regulatory controls. But are these measures always legally required, effective and proportionate?JUST FCC — IN THEORY explores the foundations, purpose and limits of Financial Crime Compliance through 38 thought-provoking questions.Focusing on the European legal framework, the book distinguishes binding obligations from supervisory expectations and institutional choices. It examines effectiveness, proportionality, privacy and fundamental rights, challenging the assumption that more controls necessarily mean better compliance.Written for compliance professionals, legal advisers, risk managers, supervisors and policymakers, the book introduces four principles: Legally Grounded, Evidence-Informed, Proportionate and Accountable.Understand what the law requires. Question what goes beyond it. Justify the choices made.The second volume, JUST FCC — IN PRACTICE, translates these foundations into proportionate controls and defensible decisions.