The weighted average cost of capital is not quite right

Richard A. Miller

The Quarterly Review of Economics and Finance, 2009, vol. 49, issue 1, 128-138

Abstract: A firm's cost of capital used in discounted cash flow analysis is commonly calculated as a weighted average of the after tax costs of the firm's various sources of financing (equity, debt, preferred stock). Its use implies that for investment projects earning precisely the WACC the cash (in)flow is exactly sufficient to reward all the suppliers of finance with their respective costs of capital. However, the necessary cash flow (normal profit) implied by the WACC is inadequate to provide the cash flows to the individual sources of financing when they are considered separately. This note discusses the problem (WACC is a linear approximation of a nonlinear relationship) and presents a modification of the WACC which is conceptually superior to the WACC as commonly calculated.

Keywords: WACC; Cost; of; capital; Discount; rate; Financial; structure; Tax; shield (search for similar items in EconPapers)
Date: 2009
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (14)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S1062-9769(06)00121-9
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:quaeco:v:49:y:2009:i:1:p:128-138

Access Statistics for this article

The Quarterly Review of Economics and Finance is currently edited by R. J. Arnould and J. E. Finnerty

More articles in The Quarterly Review of Economics and Finance from Elsevier
Bibliographic data for series maintained by Catherine Liu ().