Inefficiency in the Spanish Cooperative Banking Sector

This paper researches X-inefficiency and scale economies in Spanish cooperative banking between 1988 and 1996, using the stochastic cost frontier methodology. The Translog cost function, with three outputs and three inputs, is used to measure X-inefficiencies across time and size. During this period of time there is no important reduction in inefficiency levels, so deregulation and internationalization has little effect on the Spanish cooperative banking market. We can see that large cooperative banks are less inefficient than small ones, indicating that it would be convenient to increase the size of these kinds of banks in order to reduce inefficiencies in this sector. We also find scale economies during this period.