Making a virtue out of necessity: The effect of negative interest rates on bank cost efficiency

Giuseppe Avignone, Claudia Girardone, Cosimo Pancaro, Livia Pancotto and Alessio Reghezza ()

Journal of International Money and Finance, 2025, vol. 155, issue C

Abstract: Do negative interest rates affect banks’ cost efficiency? We exploit the unprecedented intro- duction of negative policy interest rates in the euro area to investigate whether banks make a virtue out of necessity in reacting to negative interest rates by adjusting their cost efficiency. We find that banks most affected by negative interest rates responded by enhancing their cost efficiency. We also show that improvements in cost efficiency are more pronounced for banks that are larger, less profitable, with lower asset quality and that operate in more competitive banking sectors. In addition, we document that enhancements in cost efficiency are statistically significant only when breaching the zero lower bound, indicating that the pass-through of interest rates to cost efficiency is not effective when policy rates are positive. These findings hold important policy implications as they provide evidence on a beneficial second-order effect of negative interest rates on bank efficiency.

Keywords: Negative interest rates; Bank cost efficiency; Difference-in-differences; Stochastic frontier approach (search for similar items in EconPapers)
JEL-codes: E43 E44 E52 F34 G21 (search for similar items in EconPapers)
Date: 2025
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Working Paper: Making a virtue out of necessity: the effect of negative interest rates on bank cost efficiency (2022)
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Persistent link: https://EconPapers.repec.org/RePEc:eee:jimfin:v:155:y:2025:i:c:s0261560625000415

DOI: 10.1016/j.jimonfin.2025.103306

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