TY - UNPD A1 - Achury, Carolina A1 - Koulovatianos, Christos A1 - Tsoukalas, John D. T1 - Political economics of external sovereign defaults T2 - Center for Financial Studies (Frankfurt am Main): CFS working paper series ; No. 508 N2 - We develop a dynamic recursive model where political and economic decisions interact, to study how excessive debt-GDP ratios affect political sustainability of prudent fiscal policies. Rent seeking groups make political decisions – to cooperate (or not) – on the allocation of fiscal budgets (including rents) and issuance of sovereign debt. A classic commons problem triggers collective fiscal impatience and excessive debt issuing, leading to a vicious circle of high borrowing costs and sovereign default. We analytically characterize debt-GDP thresholds that foster cooperation among rent seeking groups and avoid default. Our analysis and application helps in understanding the politico-economic sustainability of sovereign rescues, emphasizing the need for fiscal targets and possible debt haircuts. We provide a calibrated example that quantifies the threshold debt-GDP ratio at 137%, remarkably close to the target set for private sector involvement in the case of Greece. T3 - CFS working paper series - 508 KW - sovereign debt KW - rent seeking KW - world interest rates KW - international lendin KW - incentive compatibility KW - tragedy of the commons KW - EU crisis KW - Grexit KW - Graccident Y1 - 2015 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/38278 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-382782 UR - http://ssrn.com/abstract=2631418 IS - July 2, 2015 PB - Center for Financial Studies CY - Frankfurt, M. ER -