We propose a sovereign default framework that allows us to quantify the importance of the debt dilution problem in accounting for overborrowing and sovereign default risk. We find that debt dilution accounts for 12% of the mean debt level and almost 100% of the sovereign default risk in the...

proceed to study a calibrated life-cycle model in which households decide to rent, to buy a house, or to foreclose on their mortgage contracts.

Credit constraints that link a private agent's debt to market-determined prices embody a credit externality that drives a wedge between competitive and constrained socially optimal equilibria, inducing private agents to ``overborrow." The externality arises because agents fail to internalize the...