Market Value Calculation and the Solution of Circularity between Value and the Weighted Average Cost of Capital WACC

Autores/as

  • Ignacio Vélez-Pareja Universidad Tecnológica de Bolívar
  • Joseph Tham Duke University

Palabras clave:

Weighted Average Cost of Capital, WACC, firm valuation, capital budgeting, equity cost of capital.

Resumen

Most finance textbooks present the Weighted Average Cost of Capital WACC calculation as:

WACC = Kd×(1-T)×D% + Ke×E% (1)

Where Kd is the cost of debt before taxes, T is the tax rate, D% is the percentage of debt on total value, Ke is the cost of equity and E% is the percentage of equity on total value. All of them precise (but not with enough emphasis) that the values to calculate D% y E% are market values. Although they devote special space and thought to calculate Kd and Ke, little effort is made to the correct calculation of market values. This means that there are several points that are not sufficiently dealt with: Market values, location in time, occurrence of tax payments, WACC changes in time and the circularity in calculating WACC. The purpose of this note is to clear up these ideas, solve the circularity problem  and emphasize in some ideas that usually are looked over.

 

Also, some suggestions are presented on how to calculate, or estimate, the equity cost of capital.

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Biografía del autor/a

Ignacio Vélez-Pareja, Universidad Tecnológica de Bolívar

Associate Professor, Department of Finance and International Business

Joseph Tham, Duke University

Visiting Assistant Professor, Duke Center for International Development in the Sanford Institute of Public Policy

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Publicado

2009-10-23