2. Universidad Cardenal Herrera-CEU

The literature analysing the efficiency of financial institutions has evolved rapidly over the last 20 years. Most research has focused on the input side, analysing either cost, input technical efficiency or input allocative efficiency, whereas comparatively fewer studies have examined the revenue side. However, both sides are relevant when evaluating banks’ performance. This article explicitly explores how serious it may be to confine the analysis to one side of banks’ activities only, comparing the efficiencies yielded by either minimising costs or maximising revenues. We focus on the Spanish banking sector, which is currently undergoing a profound process of change and restructuring. The application shows how severely biased the analysis is when only a partial efficiency measurement is conducted. It also shows the growing relevance of the issue since the beginning of the financial crisis. © 2016 Asociación Española de Contabilidad y Administración de Empresas (AECA).

After the financial crisis of 2007–2008, some bank performance dimensions have been the subject of debate, two of which are bank efficiency, and bank risk-taking behavior. The literature on bank efficiency and productivity has grown considerably over the last three decades, and has gained momentum in the aftermath of the financial crisis. Interest in bank risk-taking behavior, usually focusing on its links to monetary policy, has been relatively low, but has also increased exponentially in more recent years. This paper combines these two streams of research. Specifically, we test whether more inefficient banks take greater risks when selecting borrowers, charging interests and requiring collateral, and whether these links between inefficiency and risk change according to the type of bank. Our analysis centers on the Spanish banking system, which has been severely affected by the burst of the housing bubble and has undergone substantial restructuring. To test our hypotheses, we created a database with information on banks and savings banks, their borrowers (non-financial firms), and the links between them. The study also contributes to the literature by considering a novel profit frontier approach. Our results suggest that more inefficient banks take greater risks in selecting their borrowers, and that this high-taking behavior is not offset by higher interest rates.