This study investigates the influence of M&A on the performance of banks operating in Poland. We use a sample of 14 transactions that occurred in the Polish banking sector from 2001 to 2015. Our data set includes pre and post-merger accounting information covering a period of two years before and after the merger. We follow Pilloff’s  approach to determine the average performance changes measured with ROAA and ROAE. According to the research results, M&As transactions seem to affect profitability as both ROAA and ROAE means change. However, these changes do not follow the same trend. The correlations between the acquirer’s pre-merger weighted performance measured with ROAA and ROAE and merger-related changes in performance are significant and negative. The same situation is observed as regards the target pre-merger weighted performance measured with ROAE and merger-related changes in performance. The results also suggest that large acquirers are associated with less successful M&A.
Altunbas Y., Ibáñez M.D., 2004, Mergers and acquisitions and bank performance in Europe. The role of strategic similarities, ECB Working Paper, vol. 398, pp. 1-35.
Badreldin A., Kalhoefer C., 2009, The Effect of Mergers and Acquisitions on Bank Performance in Egypt, Working Paper, vol. 18, pp. 1-15.
Balcerowicz E., Bratkowski A., 2001, Restructuring and Development of the Banking Sector in Poland. Lessons to be Learnt by Less Advanced Transition Countries, Case Reports, Centrum Analiz Społeczno-Ekonomicznych, vol. 44, pp. 1-38.
Baltas K.N., Kapetanios G., Izzeldin M., 2017, Liquidity creation through efficient M&A: A viable solution for vulnerable banking systems? Evidence from a stress test under a panel VAR methodology, Journal of Banking & Finance, vol. 83, pp. 36-56.
Berger A.N., Demsetz R.S., Strahan P.E., 1999, The consolidation of the financial services industry: causes, consequences and implications for the future, Journal of Banking & Finance, vol. 23, pp. 135-194.
Berger A.R., DeYoung R., Genay H., Udell G.F., 2000, Globalization of Financial Institutions: Evidence from Cross-Border Banking Performance, The Brookings-Wharton Papers on Financial Services, vol. 3, pp. 23-158.
Bruner R.F., 2002, Does M&A pay?, Journal of Applied Finance, vol. 12, no. 1, pp. 48-68.
Caiazza S., Pozzolo A.F., Trovato G., 2016, Bank efficiency measures, M&A decision and heterogeneity, Journal of Productivity Analysis, vol. 46, no. 1, pp. 25-41.
Calomiris C.W, 1999, Gauging the efficiency of bank consolidation during a merger wave, Journal of Banking & Finance, vol. 23, pp. 615-621.
Campa J.M., Hernando I., 2005, M&A performance in the European financial industry, Documentos de Trabajo no. 0516, Banco Espana, pp. 1-27.
Carbo V.S., Humphrey D.B., Fernandez F.R., 2003, Bank deregulation is better than mergers, Journal of International Financial Markets, Institutions and Money, vol. 13, no. 5, pp. 429-449.
Cornett M.M., McNutt J.J., Tehranian H., 2006, Performance changes around bank mergers: rev- enue enhancements versus cost reductions, Journal of Money, Credit and Banking, vol. 38, no. 4, pp. 1013-1050.
Diaz B.D., Olalla M.G, Azofra S.S., 2004, Bank acquisitions and performance: evidence from a panel of European credit entities, Journal of Economics and Business, vol. 56, pp. 377-404.
Gaughan P.A. (ed.), 1996, Mergers, Acquisitions and Corporate Restructurings, John Wiley & Sons, New York.
Harvey S.K., 2015, The role of mergers and acquisitions in firm performance: A Ghanaian case study, Journal of Applied Business and Economics, vol. 17, no. 1, pp. 66-77.
Havrylchyk O., 2004, Consolidation of the Polish banking sector: consequences for the banking institutions and the public, Economic Systems, vol. 28, pp. 125-140.
Irfan S.M., Nawaz M., Zulqarnain A.M., Khan W.A., 2014, Do mergers and acquisitions vacillate the banks performance, Research Journal of Finance and Accounting, vol. 5, no. 6, pp. 123-137.
Kahn C., Pennacchi G., Sopranzetti B., 2000, Financial Institutions Center Bank Consolidation and Consumer Loan Interest Rates, The Wharton School, University of Pennsylvania, pp. 1-36.
Karenfort S., 2011, Synergy in Mergers & Acquisition: The Role of Business Relatedness, Josef EUL Verlag, Koln, pp. 1-121.
Khan A.A., 2011, Merger and acquisitions (M&As) in the Indian banking sector in post liberalization regime, International Journal of Contemporary Business Studies, vol. 2, no. 11, pp. 31-45
Kokoszczyński R., 2001, Structural changes in the Polish banking industry in three dimensions of consolidation processes in an emerging economy. The banking industry in the emerging market economies: competition, consolidation and systemic stability, Bank for International Settlements, vol. 4, pp. 118-122.
Korzeb Z., 2013, Ocena fuzji i przejęć w polskim sektorze bankowym z wykorzystaniem wskaźników rentowności (ROAA,ROAE), Zarządzanie i Finanse, no. 2, pp. 321-331.
Kozak S., 2013, Consolidation of the banking sector in Poland in 1989-2013 in comparison with the structural changes of the banking sector in the USA and the EU, Economic Institute, NBP Working Paper, vol. 166, pp. 1-55.
Kumar R., 2009, Post-merger corporate performance: an Indian perspective, Management Research News, vol. 32, no. 2, pp. 145-157.
Kwan S., Wilcox J., 2002, Hidden cost reduction in bank mergers: accounting for more productive banks, [in:] A.H. Chen (ed.), Research in Finance, Elsevier Press, San Diego, 19, pp. 109-124.
Micek M., 2007, Przegląd metod oceny efektów konsolidacji banków, Bank i Kredyt, no. 4, pp. 54-66.
Pilloff S.J., 1996, Performance changes and shareholder wealth creation associated with mergers of publicly traded banking institutions, Journal of Money, Credit and Banking, vol. 28, no. 3, pp. 294-310.
Schade V., 2014, Successful management of mergers & acquisitions: development of a synergy tracking tool for the post merger integration, Anchor Academic Publishing, pp. 1-72.
Shakoor M.J., Nawaz M., Asab M.Z., Khan W.A., 2014, Do mergers and acquisitions vacillate the banks performance? An evidence from Pakistan banking sector, Research Journal of Finance and Accounting, vol. 5, no. 6, p. 123-137.
Shah B.A., Khan N., 2017, Impacts of mergers and acquisitions on acquirer banks’ performance, Australasian accounting, Business and Finance Journal, vol. 11, pp. 30-54.
Singh P, Singh K., 2016, Exploring synergies in bank mergers, A case study, Finance India, vol. XXX, no. 1, pp. 141-152.
Sufian F., Habibullah M.S., 2013, The impact of forced mergers and acquisitions on banks’ total factor productivity: empirical evidence from Malaysia, Journal of the Asia Pacific Economy, vol. 19, no. 1, pp. 151-185.
Tauseef S., Nishat M., 2013, Wealth effect of mergers & acquisitions in emerging markets: the case of Pakistan’s banking sector, Business Review, vol. 9, no. 2, pp. 1-14.
Urząd Komisji Nadzoru Finansowego, 2017, Raport o sytuacji banków w 2016, Warszawa, pp. 1-120.
Van Horen N., Claessens S., 2001, Being a foreigner among domestic banks: asset or liability, IMF Working Papers, pp. 1-35.
Vennet R.V., 1996, The effect of mergers and acquisitions on the efficiency and profitability of EC credit institutions, Journal of Banking & Finance, vol. 20, no. 9, pp. 1531-1558.
Wadhwa K., Syamala R.S., 2015, An empirical examination of efficiency theory of mergers in the emerging market of India, Theoretical Letters, vol. 5, pp. 757-774.