A central tenet of the Maastricht Treaty is that a successful European Monetary Union requires sustainable public finances of its member states. Yet there is no clear definition of sustainability. The economist’s common use of the term builds on the concept of an intertemporal budget...

Two literatures in political economy argue that differences in political institutions help explain variation in the fiscal performance of countries. They indentify electoral systems and institutions that structure the formation of the budget as important determinants of the budget deficit. In...