The evidence on efficiency gains: The role of mergers and the benefits to the public

Operating efficiencies, employee productivity, profit performance and average relative efficiency (using Data Envelopment Analysis) were measured for Australian trading banks from 1986 to 1995. Changes in a bank's market share of deposits is explored as a means of determining the extent to which efficiency gains are passed on to the public. In general, efficiencies rose in the post-deregulation period. Evidence from the merger cases studied supports the reports of others that acquiring banks are more efficient than target banks. However, the acquiring bank does not always maintain its pre-merger efficiency. Decision-makers ought to be more cautious in promoting mergers as a means to enjoying efficiency gains. There is mixed evidence on the extent to which the benefits of efficiency gains are passed on to the public. (C) 1999 Elsevier Science B.V. All rights reserved.