Structural Credit Risk Models: Endogenous versus Exogenous Default

Abstract

This article reviews structural credit risk models. Special emphasis is on the distinction between endogenous default versus exogenous default and the economic implications of the different assumptions. It is argued that models with endogenous default provide more insight into the default process. On the other hand, assuming exogenous default gives the flexibility to include certain features that are observed in actual credit markets.

Keywords: Structural credit risk models, Default probability, Bond pricing, Credit spreads

JEL Classification: G00, G12, G33