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Cost of capital equations under the Australian imputation tax system

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  • Mike Dempsey
  • Graham Partington

Abstract

Since the introduction of the Australian imputation tax system, there have been problems both in the measurement of the market value of franking (imputation tax) credits and in their application to estimating cash flows and the cost of capital. In the present paper, we provide a convenient and robust resolution to the above problems in the context of an internally consistent set of equations for the cost of capital, asset valuation and the capital asset pricing model (CAPM). The equations apply under both classical and imputation tax systems and under differential taxation of dividends, capital gains and interest. The simple form of the CAPM presented here is shown to encompass more complex versions of the CAPM, which attempt to accommodate the effect of personal taxes. The valuation equations require an estimate of the market value of $1 of the firm's dividends, within which is embedded the market value of the imputation tax credits. Separate estimates of the value of imputation tax credits, or Officer's gamma factor, are not required.

Suggested Citation

  • Mike Dempsey & Graham Partington, 2008. "Cost of capital equations under the Australian imputation tax system," Accounting and Finance, Accounting and Finance Association of Australia and New Zealand, vol. 48(3), pages 439-460, September.
    • Handle: RePEc:bla:acctfi:v:48:y:2008:i:3:p:439-460
    DOI: 10.1111/j.1467-629X.2007.00252.x
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    1. Aelee Jun & David R. Gallagher & Graham H. Partington, 2011. "Institutional Dividend Clienteles Under an Imputation Tax System," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 38(1-2), pages 198-224, January.
    2. Michael Dempsey, 2015. "Stock Markets, Investments and Corporate Behavior:A Conceptual Framework of Understanding," World Scientific Books, World Scientific Publishing Co. Pte. Ltd., number p1007, January.
    3. Kai-Wei (Shaun) Siau & Stephen J. Sault & Geoffrey J. Warren & Henk Berkman, 2015. "Are imputation credits capitalised into stock prices?," Accounting and Finance, Accounting and Finance Association of Australia and New Zealand, vol. 55(1), pages 241-277, March.
    4. Michael Dempsey, 2019. "Discounting methods and personal taxes," European Financial Management, European Financial Management Association, vol. 25(2), pages 310-324, March.
    5. Chung-Fu Lai & Yin-Rong Chang, 2016. "Effects of Imputation Ratio Change on Open Economy in the Integrated Income Tax System," Asian Economic and Financial Review, Asian Economic and Social Society, vol. 6(1), pages 1-14, January.

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