​This book explores some relevant distortions and market failures in financial and banking markets caused by the recent financial crisis and offers important insights to policymakers as well. After having introduced the reader to the economic background behind the origin of the present financial turmoil, the book proposes a distinct angle to look at some macro and microeconomic aspects. The volume discusses whether and to what extent policies, implemented by governments and monetary authorities to countervail bank defaults and avoid a disastrous financial instability, have in some way determined opportunistic conducts (moral hazard), changes in banks’ behaviour, distortive incentives and market failures. Furthermore, the book offers a viewpoint on the effects of the evolution of regulation for the banking sector. Finally, the book assesses how the increase in the cost of funding and the shrinking in credit supply (credit crunch) has modified the financial structure of small and medium firms. To illustrate this, some specific cases at Italian regional level are examined.