No. 593 / May 2018 Basel methodological heterogeneity and banking system stability: The case of the Netherlands Laurence Deborgies Sanches and Marno Verbeek Basel methodological heterogeneity and banking system stability: The case of the Netherlands Laurence Deborgies Sanches and Marno Verbeek * * Views expressed are those of the authors and do not necessarily reflect official positions of De Nederlandsche Bank. De Nederlandsche Bank NV Working Paper No. 593 P.O. Box 98 1000 AB AMSTERDAM May 2018 The Netherlands Basel methodological heterogeneity and banking system stability: The case of the Netherlands* Laurence Deborgies Sanchesa and Marno Verbeekb a De Nederlandsche Bank b Erasmus University of Rotterdam May 2018 Abstract The paper investigates how the mix of credit risk measurement methodologies under Basel capital adequacy rules influenced banking stability in the Netherlands during 2008-2015. It presents a first descriptive analysis that helps to examine the micro-regulation of individual banks and the macro- regulation of the banking system in one unified framework. Its goal is to draw regulators’ and researchers’ attention to interesting issues based on the comparison of the literature highlighting the weak points of the regulatory framework with what is observed in the dataset. Its purpose is to stimulate discussions on certain methodological and policy options. Keywords: macro-regulation, banks, credit rating, Basel methodology. JEL classifications: G001, G21, G24, G28. * Corresponding author: E-mail:
[email protected] The view expressed in this paper are those of the authors and do not necessarily reflect official positions of De Nederlandsche Bank. We are particularly grateful to Gisella Van Vollenhoven and Jakob de Haan for their important help in the process of this paper.