Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/79562 
Year of Publication: 
2013
Series/Report no.: 
SFB 649 Discussion Paper No. 2013-025
Publisher: 
Humboldt University of Berlin, Collaborative Research Center 649 - Economic Risk, Berlin
Abstract: 
Bank liability guarantee schemes have traditionally been viewed as costless measures to shore up investor confidence and stave off bank runs. However, as the experiences of some European countries, most notably Ireland, have demonstrated, the credibility and effectiveness of these guarantees is crucially intertwined with the sovereign's funding risks. Employing methods from the literature on global games, we develop a simple model to explore the systemic linkage between the rollover risks of a bank and a government, which are connected through the government's guarantee of bank liabilities. We show the existence and uniqueness of the joint equilibrium and derive its comparative static properties. In solving for the optimal guarantee numerically, we show how its credibility may be improved through policies that promote balance sheet transparency. We explain the asymmetry in risk-transfer between sovereign and banking sector, following the introduction of a guarantee as being attributed to the resolution of strategic uncertainties held by bank depositors and the opacity of the banks' balance sheets.
Subjects: 
bank debt guarantees
transparency
bank default
sovereign default
global games
JEL: 
G01
G28
D89
Document Type: 
Working Paper

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