Modelling Banking Commissions: An Application to the Italian Banking System

Abstract

This paper presents a procedure for the modelling of net bank commissions (Non Interest Rate Income) as a function of macroeconomic variables. The methodology used to estimate the models is based on a Bayesian approach (BACE) method which provides the degree of relevance for each macroeconomic variable, determining its impact in explaining the evolution of the commissions. Uses of the procedure described above range from internal management purposes to regulatory and supervisory stress testing. A quantitative analysis of the commissions is presented for the Italian banking system, at an aggregate level, and for a sample of Italian banks, at single entity level.

Keywords: satellite models, fees and commissions, simulation of balance sheet

JEL Classification: G10, G21