DP1649 Multiple Versus Single Banking Relationships

Author(s): Enrica Detragiache, Paolo Garella, Luigi Guiso
Publication Date: May 1997
Keyword(s): Corporate Finance, Multiple Banking, Relationship Banking
JEL(s): G21, G30, G33
Programme Areas: Financial Economics
Link to this Page: cepr.org/active/publications/discussion_papers/dp.php?dpno=1649

This paper develops a theoretical model in which firms may choose multiple banking relationships to reduce the risk that financing will be denied by ?relationship banks? should the latter experience liquidity problems and refuse to roll over lines of credit. The inability to refinance from relationship banks signals unfavourable information about the quality of the firm?s project, which may also prevent the firm from obtaining credit from other banks. We show that if this ?lemons? problem is severe, it is optimal to establish a relationship with more than one bank in spite of higher transaction costs; if it is mild, a single banking relationship is optimal. We find that the severity of the lemons problem depends directly on the inefficiency of bankruptcy procedures and inversely on the ?fragility? of the banking system. The paper concludes with a comparison of bank-firm relationships in Italy and the United States, characterized respectively by multiple and single banking. We present evidence that bankruptcy costs are significantly higher and banks less fragile in Italy than in the United States, suggesting that the factors identified by the theoretical model are relevant in practice.