This paper contributes to the debate on the effect of capital requirements on cost efficiency. We study the relation between capital ratio and cost efficiency for Chinese banks over the period 2004–2009, taking advantage of the profound regulatory changes in capital requirements that occurred during this period to measure the exogenous impact of an increase in the capital ratio on banks’ cost efficiency. We find that such an increase has a positive effect on cost efficiency, the size of which depends to an extent on the bank's ownership type. Our results therefore suggest that capital requirements can improve cost efficiency.

We formulate the “High Liquidity Creation Hypothesis” (HLCH) that a proliferation in the core activity of bank liquidity creation increases failure probability. We test the HLCH in the context of Russian banking, where many failures occurred albeit not triggered by swings in business cycles or an exogenous shock such as a crisis. Using Berger and Bouwman (2009) liquidity creation measures, we find that high liquidity creation is associated with greater probability of bank failure and this finding survives multiple robustness checks. Our results suggest that regulatory authorities can mitigate systemic distress and reduce the costs to society from bank failures through early identification of high liquidity creators.

A large number of bank failures occurred in transition countries during the 1990s and at the beginning of the 2000s. These were related to increases in non-performing loans and deteriorated cost efficiency of banks. This paper addresses the question of the causality between non-performing loans and cost efficiency in order to examine whether either of these factors is the deep determinant of bank failures. We extend the Granger-causality model developed by [Berger, A., DeYoung, R., 1997. Problem loans and cost efficiency in commercial banks. J. Banking Finance 21, 849–870] by applying GMM dynamic panel estimators on a panel of Czech banks between 1994 and 2005. Our findings support the bad management hypothesis, according to which deteriorations in cost efficiency precede increases in non-performing loans. Banking supervisors should consequently focus on enhanced cost efficiency of banks in order to reduce the likelihood of bank failures in transition countries.