View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Research Papers in Economics Faculty of Business and Law SCHOOL OF ACCOUNTING, ECONOMICS AND FINANCE School Working Paper - Economic Series 2006 SWP 2006/12 The Wallis Report and Implications of Bank Mergers for Efficiencies Author: Su Wu The working papers are a series of manuscripts in their draft form. Please do not quote without obtaining the author’s consent as these works are in their draft form. The views expressed in this paper are those of the author and not necessarily endorsed by the School. The Wallis Report and Implications of Bank Mergers for Efficiencies Author: Su Wu Affiliation: School of Accounting, Economics and Finance, Deakin University, Australia Address: 221 Burwood Hwy, Burwood, Vic 3125, Australia Email:
[email protected] Phone: 61-3-92517808 Abstract: This paper examines the competitive consequences of bank mergers and acquisitions with particular reference to the Wallis Inquiry into the Australian Financial System in 1996. The Government responded by adopting a four pillars policy preventing mergers among the four major banks. Using the super-efficiency data envelopment analysis model, the technical efficiencies of banks operating in Australia over the period from 1983 to 2001 are estimated. Two separate methods are employed to evaluate the characteristics and determinants of merger and acquisition activities in the sector. The first method examines economic performance of banks involved in merger activities. A second method is also used to determine program efficiency differences between banks of different entry types after adjusting for differences in intra-group managerial inefficiency.