A study on the interaction of capital, liquidity and bank stability

The purpose of this paper is to empirically examine the effects of capital and liquidity on bank stability as well as the existence of a potential complementary or substitute relationship between both dimensions to explain bank stability. We use a sample of 16,061 banks from 27 countries during the period 2013-2023. Our results show that both capital and liquidity increase bank stability. However, the joint interactive effect presents a negative coefficient indicating the existence of a potential substitution effect between both variables. We also provide evidence on market power acting as a potential mechanism explaining the baseline relationships. Furthermore, the results seem to be modulated by specific bank- and country-level factors.