Bank regulation and supervision has become subject of vigorous debates during the global financial crisis. Many observers pointed out weaknesses in regulation and supervision in the run-up to the crisis (see, for example, Caprio, Demirguc-Kunt and Kane, 2010, Dan 2010, Levine 2010, and Barth, Caprio, and Levine 2012). The crisis prompted policymakers to consider changes in regulation and supervision. But much of the policy discussions focused on a small number of major (and mostly high-income) economies. And despite the high degree of interest in the global regulatory framework, there has been a surprising lack of consistent and up-to-date information on the national regulatory and supervisory approaches pursued in individual countries around the world during the crisis. This lack of information led to important gaps in understanding what works in regulation and supervision and what does not.