An Application of the Two-Stage Bivariate Probit-Tobit Model to Corporate Financing Decisions

Abstract

Most of the previous studies on the firms’ debt-equity choice utilize the standard single equation Probit (or logit) model as if firms face a single dichotomous decision to issue debt or equity, but not both. In this study, we examine the factors affecting the choice between internal and external funding and between debt and equity as well as the size of issues using a two stage Bivariate Probit-Tobit model. Our results indicate that the Bivariate-Probit estimation is more efficient than that of two independent Probit equations. An examination of factors that affect the choice of financing form and the size of issue support the predictions of trade-off theory. The pecking order’s prediction that, if external funding is needed, firms issue debt first and then equity finds no support in this study as firms with higher information asymmetry have propensity to issue equity rather than debt. While information asymmetry affects the choice between debt and equity, we find no evidence that it influences the size of issue.