Leverage Borrowing Rates, Tax Rates And Growth Rates

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Authors

Hull, Robert M.

Issue Date

2005-12-1

Type

Working paper

Language

en_US

Keywords

Financial leverage , Capital Structure Model (CSM) , Gain-to-Leverage , Wealth transfer

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Abstract

This paper extensively broadens the perpetuity gain to leverage (GL) equations of Modigliani and Miller (1963) and Miller (1977) by developing a capital structure model (CSM) that contains a series of perpetuity GL equations applicable to a variety of situations. The CSM equations show how changes in tax rates, growth-adjusted equity discount rates and debt discount rates influence firm value. These three "change-rate" factors are missing from the MM-Miller framework explaining why their equations cannot account for leverage-related costs leading to an optimal debt level. Also, the CSM extends MM-Miller by addressing a leveraged situation where wealth transfers can result. Finally, the outcomes of the CSM equations support the predictions of major capital structure theories and clarify points of controversy.

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Washburn University. School of Business

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