DEA efficiency of Serbian banks: Comparison of three approaches

The aim of this paper is to analyse three approaches in order to give a comprehensive analysis of the efficiency of the banking sector in Serbia. The paper analyses the intermediate, operating and profitability approach for measuring bank efficiency in order to give an answer to the question which is the most efficient and where can be improvements made. The paper applies a non-parametric data envelopment analysis (DEA) on a sample of 23 banks operating in Serbia in the period during and after the covid-19 pandemic, i.e. for 2019, 2020 and 2021. The results of the analysis showed that efficiency is the highest according to the intermediate approach, while the efficiency of banks is the lowest in the approach of measuring profit efficiency. The fact that the lowest levels of efficiencies in each approach were achieved by small banks with a small market share should be added to the results of the analysis. The results of the research are certainly influenced by low interest rates and the activities of mergers and acquisitions, which are intensive on the Serbian banking market.