Disclosure and the cost of capital: what do we know?

Whether firms receive cost of capital benefits from greater disclosure is an important and controversial question. This paper reviews the relevant academic research that can provide insights into this question. In conducting this review, my primary objectives are to highlight the implications of existing research for accounting practitioners, standard setters, and academicians, and to address not only the question what do we know, but also the question what do we not know, yet? The overriding conclusion of existing theoretical and empirical research is that greater disclosure reduces cost of capital. Even so, several avenues for future research exist.