The economics of supranational bank supervision.
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.
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