The introduction of Basel II has raised concerns about the possibleimpact of risk-sensitive capital requirement on the business cycle. Several approaches have been proposed to deal with the procyclicality issue.In this paper we take a general equilibrium one, which is an appropriateframework for a comprehensive analysis of different proposals since it allows to account for banks’ endogenous strategies in relation to the other agents’ behaviour. The aim of the present paper is to set up a model which allows to evaluate different rating systems in relation to the procyclicality issue. Our set up extends previous models so as to allow the analysis of both the effects of different rating systems on banks’ portfolios (as e.g. in Catarineu-Rabell et al. 2005) and the contagion effetcs relevant to financial stability (as e.g. in Goodhart et al. 2005). The paper presents a comparative statics analysis evluating a cycle-dependent and a neutral rating system with main focus on the banks’ point of view.
Pederzoli, C, Costanza, Torricelli e D., Tsomocos. "Rating systems, procyclicality and Basel II: an evaluation in a general equilibrium framework" Working paper, Oxford University, 2008.
Rating systems, procyclicality and Basel II: an evaluation in a general equilibrium framework
TORRICELLI, Costanza;
2008
Abstract
The introduction of Basel II has raised concerns about the possibleimpact of risk-sensitive capital requirement on the business cycle. Several approaches have been proposed to deal with the procyclicality issue.In this paper we take a general equilibrium one, which is an appropriateframework for a comprehensive analysis of different proposals since it allows to account for banks’ endogenous strategies in relation to the other agents’ behaviour. The aim of the present paper is to set up a model which allows to evaluate different rating systems in relation to the procyclicality issue. Our set up extends previous models so as to allow the analysis of both the effects of different rating systems on banks’ portfolios (as e.g. in Catarineu-Rabell et al. 2005) and the contagion effetcs relevant to financial stability (as e.g. in Goodhart et al. 2005). The paper presents a comparative statics analysis evluating a cycle-dependent and a neutral rating system with main focus on the banks’ point of view.
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