We examine the effects of adverse selection and agency costs on the structu
re of the consideration offered in an acquisition. Specifically we investig
ate factors affecting the benefits arising from use of earnouts. We find th
at when targets have greater private information, consideration is more lik
ely to be based on the future performance of the target. We also find an ea
rnout is more likely to be used in an acquisition if the target is a smalle
r, private company in a different industry than the acquirer. In addition,
earnouts are more likely to be used when fewer acquisitions take place with
in an industry and when targets are service companies or companies with mor
e unrecorded assets. Finally, we compare the use of earnouts with the use o
f stock and find that financing considerations are a more important factor
in the use of stock.