Should banks own equity stakes in their borrowers? A contractual solution to hold-up problems

This paper develops a model to answer the question whether a bank should hold a share of the equity of a borrowing firm. The model shows that a small equity stake held by the bank can have a significant and positive impact on the lending relationship. The benefit of bank equity participation arises from the reduced ability of the bank to extract rents from the firm in multiple rounds of financing. This, in turn, improves the firm's incentive to make investments in profitable projects that require future outside finance. The benefit is likely to be significant for small to medium size firms, growth firms, and firms with ongoing capital needs. The paper addresses, from a corporate finance perspective, the current debate about whether banks should be allowed to own equity stakes in corporations - and how large these equity stakes should be.