This article quantifies the welfare differences among a monetary union, flexible exchange rates (economic disintegration) and a monetary plus fiscal transfer union (higher economic integration). The vehicle of analysis is a medium-scale New Keynesian DSGE model consisting of two heterogeneous...

Calculations based on the intertemporal government budget constraint can be only indicative regarding an economy's fiscal sustainability. Sovereign interest rates, growth rates, as well as primary fiscal balances are all endogenous variables that are jointly determined. This rationalizes the use...