Decomposição do Spread Bancário no Brasil:uma análise do período recente (2000-2008)

Abstract

This dissertation evaluates the evolution and structure of the ex-post bank spread (net interest margin) in Brazil in the 2000-2008 period using the method of accounting decomposition. This evaluation is made in three parts. In the first one the banking sector is studied as a whole using a sample of 30 banks that involve 89.8% of the total assets of banking sector in 2008. In the second part an analysis is carried out taking in account the peculiarities of the different segments of banks (great retail banks, public retail banks and banks specialized in credit), defined considering a set of features that include size, type of business and clientele, characteristic of funding, and the capital ownership (public, private domestic and foreign one). Finally, in a third part, it is considered the niche of the credit market that the bank acts. This segmentation of the banking sector allows us to evaluate the evolution of spread and its decomposition, as well as comparing the different segments of the credit market in Brazil. The main conclusion of the dissertation is that to divide the sample of banks according to the segment or niche of market has important implications for the analysis of the level and decomposition of bank spread.