Credit Scoring Modelling: A Micro–Macro Approach

In order to reduce its capital requirement, banks use different credit risk models that are able to detect de difference between defaulter and a non-defaulter customer. In this paper I aim to make a comparison between these models and more to see which ones improve most when a macroeconomic variables is also introduce. What I would like to evidence in this paper is that more important than a particular model is the variables selection and the choice of a loss function that have to be minimized in order to treat the tradeoff between the profit considerations and best classification of customers.