Does debt structure heterogeneity reduce the cost of capital?

Abstract

This paper seeks to investigate the relationship between the level of debt structure heterogeneity and the cost of debt of publicly and privately held Brazilian companies in the period from 2020 to 2019. Debt structure heterogeneity is a relatively recent topic in the financial literature related to capital structure. As far as is known, the direct relationship between debt heterogeneity and the cost of debt has not yet been addressed in previous studies in the national and international literature. Research that broadens the knowledge regarding factors that attenuate the cost of debt is pertinent, especially in a context such as that of Brazil, in which high funding cost spreads end up compromising the economic viability of many projects and, consequently, the capacity for companies to generate value. The research results have impacts over the financial decision-making process, given the association identified between heterogeneity and debt cost, leading to reflections on the definition of a company’s capital structure. Thus, it is closely related with firm value, whose maximization is the object of interest of managers and shareholders. Panel data regression models were estimated in which the dependent variable is represented by the cost of debt and the explanatory variables are represented by the heterogeneity level of companies’ debt structure, which in turn is represented by two different proxies, aiming to give greater robustness to the results. The results are original and highlight the role of the debt structure in reducing the cost of debt. It is verified that the greater the debt heterogeneity, the lower companies’ cost of debt. This relationship is even more intense for companies that are more susceptible to high agency costs.