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Title: 

A Model of Optimal Capital Sucture with Stochastic Interest Rates

Authors: Huang, Jing-zhi
Ju, Nengjiu
Ou-Yang, Hui
Issue Date: 17-Feb-2003
Series/Report no.: FIN-03-014
Abstract: This paper develops a model of optimal capital structure with stochastic interest rate which is assumed to follow a mean-reverting process. Closed-form solutions are obtained for both the value of the firm and the value of its risky debt. The paper finds that the current level and the long-run mean of the interest rate process play distinctive roles in our integrated model. The current level of the interest rate is critical in the pricing of risky bonds, while the long-run mean plays a key role in the determination of a firm’s optimal capital sucture such as the optimal coupon rate and leverage ratio. Our findings demonsate that a model of optimal capital sucture with a constant interest rate cannot price risky bonds and determine the optimal capital sucture simultaneously in a satisfactory manner. Furthermore, our numerical results indicate that the correlation between the stochastic interest rate and the asset return of a firm has little impact on the firm’s optimal capital structure.
URI: http://hdl.handle.net/2451/27181
Appears in Collections:Finance Working Papers

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