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The Cost of Inattention: Deadline and Media Effects on Implicit Taxes

Author

Listed:
  • Sebastian Eichfelder

    (Faculty of Economics and Management, Otto-von-Guericke University Magdeburg)

  • Jochen Hundsdoerfer

    (Freie Universität Berlin)

  • Martin Kaltenhaeuser

    (Otto-von-Guericke-Universität Magdeburg)

  • Mona Noack

    (Freie Universität Berlin)

Abstract

We provide evidence that the capitalization of taxes in share prices depends on investor attention and can create additional implicit taxes for inattentive investors. Interpreting a German capital gains tax reform as a natural experiment, we identify investor attention by the temporal distance to the deadline (deadline effect) and media coverage (media effect). Although the reform was announced 18 months in advance, we find evidence for large abnormal returns around the deadline. In the two days preceding it, daily returns (share prices, trading volumes) of treated stocks increased abnormally by 2.5 pp (7.0%, 296.7%). The cumulative abnormal return CAR one day before the deadline was 10.7%. The media coverage also abnormally increased returns and trading activity. In the last months of 2008, 20 additional articles per week on the reform resulted in a CAR of about 2% in one week. Inattentive investors paid abnormally high prices in periods of high attention, implying an implicit tax burden of up to 67.9% of realized and 130.5% of expected returns one day before the deadline.

Suggested Citation

  • Sebastian Eichfelder & Jochen Hundsdoerfer & Martin Kaltenhaeuser & Mona Noack, 2025. "The Cost of Inattention: Deadline and Media Effects on Implicit Taxes," FEMM Working Papers 26005, Otto-von-Guericke University Magdeburg, Faculty of Economics and Management.
    • Handle: RePEc:mag:wpaper:26005
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    References listed on IDEAS

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    Keywords

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    JEL classification:

    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • H24 - Public Economics - - Taxation, Subsidies, and Revenue - - - Personal Income and Other Nonbusiness Taxes and Subsidies
    • M40 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Accounting - - - General
    • M48 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Accounting - - - Government Policy and Regulation

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