On the Shock-Absorbing Properties of a Banking Union: Europe Compared with the United States.

This study investigates the shock-absorbing properties of a banking union by providing a detailed comparison between the way regional financial shocks have been absorbed at the federal level in the United States, but have led to severe regional (national) financial dislocation and tensions in the euro area. The extent to which the institutions of the banking union, which is now emerging in the euro area, should increase its capacity to deal with future regional boom and bust cycles is also discussed. Cross-border capital flows in the form of equity appear to be much more stable than those taking the form of credit, especially inter-bank credit. Moreover, credit booms and bust leave a debt overhang and losses can materialise only via insolvencies, whereas equity flows absorb automatically losses in case of a bust and provide the cross-border owner with incentives to continue to provide financing even during a crisis. It follows that cross-border banks can absorb regional shocks. Of course, there is no free lunch: large cross-border banks pose the 'too big to fail' problem, and they also propagate shocks, especially if they originate in large countries, to the entire area. [ABSTRACT FROM AUTHOR]