We derive and present the formula for optimal debt under the assumption that tax shields are discounted at the cost of levered equity, Ke and cash flows are on perpetuity. The formulation is consistent and is derived from basic financial principles. This formulation is valid for non-growing...

I identify three sources of risk for the tax shields: two of them associated to the risk of debt and one associated to the operating risk. I present a set of conditions for defining risky debt associated to cash flow and not to accounting earnings. I explain why realization of tax shields for...

The English version of this article is available at: "http://ssrn.com/abstract=2214674" http://ssrn.com/abstract=2214674.En estas diapositivas se discute la dificultad práctica y conceptual de la búsqueda de una estructura óptima de capital EOC. Se propone un enfoque normativo que llamamos...

La versión española de este artículo se puede encontrar en: "http://ssrn.com/abstract=2214703" http://ssrn.com/abstract=2214703.In these slides we discuss the practical and conceptual difficulty of finding an Optimal Capital Structure. We propose a normative approach we call Implicit...

The English version of this paper can be found at 'http://ssrn.com/abstract=1655244' http://ssrn.com/abstract=1655244.Se presenta la derivación de costo de capital bajo la premisa del ahorro de impuestos de riesgo descuento con el costo de capital apalancado. Se demuestra que la formulación es...

La versión española de este artículo se puede encontrar en: "http://ssrn.com/abstract=1826264" http://ssrn.com/abstract=1826264This paper shows how to proceed to find the optimal capital structure and value with period-to-period constant and variable leverage, when the discount rate for tax...

This article (1) identifies three sources of risk for tax shields (TS): Two of them are associated with debt risk and one is associated with operating risk. (2) A set of conditions for defining risky debt associated with cash flow, not with earnings, is presented. (3) It further shows that...

This paper has an English version and can be downloaded from: "http://ssrn.com/abstract=1799605" http://ssrn.com/abstract=1799605En este trabajo se muestra cómo encontrar la estructura óptima de capital y el valor con un endeudamiento constante y variable período a período, cuando la tasa de...

La versión española de este artículo se puede encontrar en: 'http://ssrn.com/abstract=2685207' http://ssrn.com/abstract=2685207.We discuss the relevance of personal taxes on Tax Shields. Interest and taxes are the basis for defining an optimal capital structure. When personal taxes are...

The Spanish version of this paper can be found http://ssrn.com/abstract=1899685This paper estimates the value of tax shields, using the discounted cash flow method for 23 major non financial firms listed in the Bolsa de Valores de Colombia (Colombian Stock Exchange) between 2001 and 2010. Our...