The Effect of Scale on Productivity of Turkish Banks in the Post-Crises Period: An Application of Data Envelopment Analysis
AbstractThe purpose of this paper is to investigate the productivity of Turkish Banks according to the effect of scale in the Post-Crises Period. The data used in this study covers the period from 2002:1 to 2004:3. We applied Data Envelopment Analysis (DEA), which is a non-parametric linear programming-based technique for measuring relative performance of decision-making units (DMUs). We calculated DEA as constant & variable return-to-scale based on output oriented Malmquist Index. Although the scale effect can be measured with DEA scale efficiency measurement, we used scale indicators as input variables in order to find out not only scale efficiency but also scale affect directly. We applied DEA by using financial ratios (Athanassopoulos and Ballantine, 1995; Yeh, 1996) and branch & personel number indicators. This study uses five input variables as i) branch numbers, ii) personnel number per branch, iii) share in total assets, iv) share in total loans, v) share in total deposits; and five output variables as i) net profit-losses/total assets (ROA), ii) net profit-losses/total shareholders equity (ROE), iii) net interest income/total assets, iv) net interest income/ total operating income, and v) noninterest income/total assets. We find that difference in efficiency is mainly from technical efficiency rather than scale efficiency in the post-crises period. The other finding reveals that efficiency approximate between selected banks and supporting that advantage of scale economies can be lost in Turkish banking. Overall, the results confirm that Turkish banking has U shaped Scale Efficiency on selected profitability ratios. The application of this paper based on other financial ratios with decreasing and increasing return-to-scale DEA is left to future research.
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Bibliographic InfoPaper provided by University Library of Munich, Germany in its series MPRA Paper with number 2487.
Date of creation: 01 May 2006
Date of revision:
Turkish Banks; Return to Scale; Scale Efficiency; Profit Efficiency; Data Envelopment Analysis;
Find related papers by JEL classification:
- G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
- C23 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Models with Panel Data; Spatio-temporal Models
- G2 - Financial Economics - - Financial Institutions and Services
This paper has been announced in the following NEP Reports:
- NEP-ALL-2007-04-09 (All new papers)
- NEP-BAN-2007-04-09 (Banking)
- NEP-EFF-2007-04-09 (Efficiency & Productivity)
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- Wahidudin, Ahmad Nazri, 2010. "Technical Efficiency of Commercial Banks in Malaysia: An Application of Window Data Envelopment Analysis," MPRA Paper 45136, University Library of Munich, Germany.
- Mohammad Hanif Akhtar, 2010. "Are Saudi banks productive and efficient?," International Journal of Islamic and Middle Eastern Finance and Management, Emerald Group Publishing, vol. 3(2), pages 95-112, June.
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