Determinants of interest margins in Spanish credit institutions before and after the 2008 financial crash

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As interest margins of credit institutions affect economic performance of countries, finding out which are the main determinants of their evolution is a research task of great interest at current times. This is the purpose of the present paper as regards to the Spanish case over the period 2004-2012. Based on the econometric contributions by Ho and Saunders (1981) and some of its extensions, the authors develop a model that includes as explanatory variables the factors usually examined in the literature and other singular variables that might be relevant. Particularly, the rate of leverage, the quality of their assets measured according to their risk, and the profit obtained from the selling of assets, including real estate ones. The research also provides an analysis of differences between banks and savings banks.

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    • Fig. 1. Nominal averages of interest rates and interest margins of banks in Spain (2004-2012)
    • Table 1. Summary of the main characteristics of contributions reviewed
    • Table 2. Descriptive summary of the interest margin determinants for the Spanish credit institutions (2004-2012)
    • Table 3. Regression models