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The Value of Tax Shields IS Equal to the Present Value of Tax Shields

  • Cooper, Ian
  • Nyborg, Kjell G

In a recent paper, Fernandez (2004a) argues that the present value effect of the tax saving on debt cannot be calculated as simply the present value of the tax shields associated with interest. This contradicts standard results in the literature. It implies that, even though the capital market is complete, value-additivity is violated. As a consequence, adjusted present value formulae of a standard sort cannot be used. Also, it implies that the value of the tax saving differs from conventional estimates by a considerable amount. We reconcile Fernandez's results with standard valuation formulae for the tax saving from debt. We show that, as one would expect, the value of the debt tax saving IS the present value of the tax savings from interest. The apparent violation of value-additivity in the Fernandez paper comes from mixing the Miles-Ezzell and Miller-Modigliani leverage policies.

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Paper provided by C.E.P.R. Discussion Papers in its series CEPR Discussion Papers with number 5182.

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Date of creation: Aug 2005
Date of revision:
Handle: RePEc:cpr:ceprdp:5182
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  1. Mark Grinblatt & Jun Liu, 2002. "Debt Policy, Corporate Taxes, and Discount Rates," NBER Working Papers 9353, National Bureau of Economic Research, Inc.
  2. Ian A. Cooper & Kjell G. Nyborg, 2008. "Tax-Adjusted Discount Rates with Investor Taxes and Risky Debt," Financial Management, Financial Management Association International, vol. 37(2), pages 365-379, 06.
  3. Robert A. Taggart & Jr., 1991. "Consistent valuation and Cost of Capital Expressions With Corporate and Personal Taxes," Financial Management, Financial Management Association, vol. 20(3), Fall.
  4. Fernandez, Pablo, 2004. "The value of tax shields is NOT equal to the present value of tax shields," Journal of Financial Economics, Elsevier, vol. 73(1), pages 145-165, July.
  5. Myers, Stewart C, 1974. "Interactions of Corporate Financing and Investment Decisions-Implications for Capital Budgeting," Journal of Finance, American Finance Association, vol. 29(1), pages 1-25, March.
  6. Fernandez, Pablo, 2004. "Reply to "The value of tax shields is equal to the present value of tax shields"," IESE Research Papers D/576, IESE Business School.
  7. Enrique R. Arzac & Lawrence R. Glosten, 2005. "A Reconsideration of Tax Shield Valuation," European Financial Management, European Financial Management Association, vol. 11(4), pages 453-461.
  8. Miles, James A & Ezzell, John R, 1985. " Reformulating Tax Shield Valuation: A Note," Journal of Finance, American Finance Association, vol. 40(5), pages 1485-92, December.
  9. Miles, James A. & Ezzell, John R., 1980. "The Weighted Average Cost of Capital, Perfect Capital Markets, and Project Life: A Clarification," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 15(03), pages 719-730, September.
  10. Richard S Ruback, 2002. "Capital Cash Flows: A Simple Approach to Valuing Risky Cash Flows," Financial Management, Financial Management Association, vol. 31(2), Summer.
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