Reint Gropp, Thomas Mosk, Steven Ongena, Ines Simac, Carlo Wix, 14 February 2021

The implementation of supranational regulations at the national level often provides national authorities with substantial room to engage in discretion and forbearance. Using evidence from a supranational increase in bank capital requirements, this column shows that national authorities may assist banks' efforts to inflate their regulatory capital to pass such supranational requirements. While supranational rules should be binding in theory, national discretion may effectively undermine them in practice.

Miguel Ampudia, Thorsten Beck, Andreas Beyer, Jean-Edouard Colliard, Agnese Leonello, Angela Maddaloni, David Marques-Ibanez, 20 September 2019

The decade since the Global Crisis has seen notable changes in the architecture of supervision, with separation of responsibility for monetary and financial stability having been reversed in many countries on the one hand, and a move towards more cross-border cooperation between supervisors on the other. This column discusses these two trends in Europe, where responsibility for supervision of the largest banks is housed in the same authority with responsibility for monetary policy, the ECB. It argues that the Single Supervisory Mechanism is a good reflection of the subtle economics of supervisory architecture and the many trade-offs that have to be taken into account.

Thorsten Beck, Emily Jones , Peter Knaack, 15 October 2018

In today’s world of globalised finance, regulators in developing countries have to weigh up the international ramifications of their decisions. This column presents the results of a research project which combines cross-country panel analysis and in-depth case studies of the political economy of the adoption of Basel II/III in the developing world. It finds that regulators in developing countries do not merely adopt Basel II/III because these standards provide the optimal technical solution to financial stability risks in their jurisdictions; concerns about reputation and competition are also important. 

Thorsten Beck, 12 April 2018

Thorsten Beck, Consuelo Silva-Buston, Wolf Wagner, 13 March 2018

International cooperation on bank supervision is still rare. This column analyses data on supervisory cooperation among a global sample of countries between 1995 and 2013 to show that cooperation among bank supervisors is not always optimal. Country pairs with higher cross-border externalities and lower heterogeneity are more likely to cooperate, and in more intense ways, but for some country pairs the costs of cooperation outweigh the benefits.

Zsofia Doeme, Stefan Kerbl, 24 January 2018

Risk weights define each bank's minimum capital requirements, but many doubt the comparability of the risk weights that banks report. This column quantifies the variability of these weights across banks, and finds that the country where a bank is headquartered creates statistically significant and economically important differences. Model output floors, as recently agreed upon by the Basel Committee, would reduce this unintended risk weight heterogeneity.

Yener Altunbaş, Simone Manganelli, David Marques-Ibanez, 14 November 2017

Prudential supervision of banks has increasingly relied on capital requirements. But bank capital played a relatively minor role in predicting bank solvency during the Global Crisis, except for scarcely capitalised banks. This column argues that while capital is a helpful tool to support bank financial stability, it is complex for supervisors to calibrate it precisely. Macroprudential authorities should be able to complement capital-based tools with additional, borrower-based prudential instruments.

Jakob de Haan, Wijnand Nuijts, Mirea Raaijmakers, 06 November 2015

The Global Crisis revealed serious deficiencies in the supervision of financial institutions. In particular, regulators neglected organisational culture at the institutional level. This column reviews efforts since 2011 by De Nederlandsche Bank to oversee executive behaviour and cultures at financial institutions. These measures aimed at identifying risky behaviour and decision-making processes at a sufficiently early stage for appropriate countermeasures to be implemented. The findings show that regulators can play a larger part in securing the stability of the financial system by taking an active role in shaping institutional cultural processes.

Sylvester Eijffinger, Rob Nijskens, 23 November 2012

The Eurozone is moving towards a banking union with the ECB at its centre. This column argues that there are problems with the European Commission’s proposal. The ECB can never supervise all 6000 banks in the Eurozone, supervision should be separated from monetary policy to avoid conflicts of interest, and joint deposit insurance and resolution funds must be created. Furthermore, the ECB should exert constructive ambiguity in its supervision.

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