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A Note on the Weighted Average Cost of Capital WACC (Nota Sobre El Costo Promedio De Capital)

Monografías No 62, Serie de Finanzas, La medición del valor y del costo de capital en la empresa, Facultad de Administración de la Universidad de los Andes, July 2002, pp. 61-98

30 Pages Posted: 10 Aug 2001 Last revised: 22 Oct 2012

Ignacio Velez-Pareja

Grupo Consultor CAV Capital Advisory & Valuation

Joseph Tham

Duke University - Duke Center for International Development in the Sanford School of Public Policy

Date Written: September 26, 2008

Abstract

Most finance textbooks (See Benninga and Sarig, 1997, Brealey, Myers and Marcus, 1996, Copeland, Koller and Murrin, 1994, Damodaran, 1996, Gallagher and Andrew, 2000, Van Horne, 1998, Weston and Copeland, 1992) present the Weighted Average Cost of Capital WACC calculation as:

WACC = d(1-T)D% eE% (1)

Where d is the cost of debt before taxes, T is the tax rate, D% is the percentage of debt on total value, e 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 d and e, 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 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.

Notes: The downloadable paper is in Spanish. The English version is available at http://ssrn.com/abstract=254587

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

JEL Classification: D61, G31, H43, M40, M46

Suggested Citation

Velez-Pareja, Ignacio and Tham, Joseph, A Note on the Weighted Average Cost of Capital WACC (Nota Sobre El Costo Promedio De Capital) (September 26, 2008). Monografías No 62, Serie de Finanzas, La medición del valor y del costo de capital en la empresa, Facultad de Administración de la Universidad de los Andes, July 2002, pp. 61-98. Available at SSRN: https://ssrn.com/abstract=279460 or http://dx.doi.org/10.2139/ssrn.279460

Ignacio Velez-Pareja (Contact Author)

Grupo Consultor CAV Capital Advisory & Valuation ( email )

Ave Miramar # 18-93 Apt 6A
Cartagena
Colombia
+573112333074 (Phone)

HOME PAGE: http://cashflow88.com/decisiones/decisiones.html

Joseph Tham

Duke University - Duke Center for International Development in the Sanford School of Public Policy ( email )

Box 90312
302, Towerview Dr, Rubenstein Hall, Room 272
Durham, NC 27708
United States
919-613-9234 (Phone)
919-681-0831 (Fax)

HOME PAGE: http://fds.duke.edu/db/Sanford/faculty/thamjx

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