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Debt and Taxes: The Role of Tax Avoidance

Published online by Cambridge University Press:  13 January 2026

Peter Brok*
Affiliation:
Copenhagen Business School and Danish Finance Institute
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Abstract

Empirically, the effect of corporate tax rates on leverage has been smaller than expected based on trade-off theory. In this article, I show that tax avoidance functions as a non-debt tax shield, reducing the benefits of the debt tax shield. I find that higher tax rates cause higher non-debt tax avoidance, which crowds out the debt tax shield. Moreover, I show that the strength of the relationship between debt and tax rates depends on the level of tax avoidance. A 1-standard-deviation higher tax rate implies 2.8% higher leverage for low tax avoidance firms, but has a negative effect for high tax avoidance firms.

Information

Type
Research Article
Copyright
© The Author(s), 2026. Published by Cambridge University Press on behalf of the Michael G. Foster School of Business, University of Washington
Figure 0

TABLE 1 Variable DefinitionsTABLE 1 Long description.

Figure 1

TABLE 2 Summary StatisticsTABLE 2 Long description.

Figure 2

TABLE 3 Profit ShiftingTABLE 3 Long description.

Figure 3

TABLE 4 LeverageTABLE 4 Long description.

Figure 4

FIGURE 1 Common Trend Analysis of Profit ShiftingFigure 1 shows the effect of being in the treated group over time. The y-axis shows the estimated coefficient of being in the treated group in a year on ln(EBIT). 2006 is the year of the shock; 2005 is used as the baseline. The dashed line indicates the 5% confidence interval.FIGURE 1 Long description.

Figure 5

TABLE 5 Exogenous ShockTABLE 5 Long description.

Figure 6

FIGURE 2 Common Trend Analysis LeverageFigure 2 shows the effect of being in the treated group over time. The y-axis shows the estimated coefficient of being in the treated group in a year on Leverage. 2006 is the year of the shock; 2005 is used as the baseline. The dashed line indicates the 5% confidence interval.FIGURE 2 Long description.

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TABLE 6 Tax Rate by QuartileTABLE 6 Long description.

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TABLE 7 Tax Rate by QuartileTABLE 7 Long description.

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TABLE 8 Quartile Distribution by CountryTABLE 8 Long description.

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TABLE 9 Tax Rate DecreaseTABLE 9 Long description.

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FIGURE 3 Dynamic Effect of the 2008 Tax ChangeFigure 3 shows the effect of treated relative to control firms for the 2008 tax rate changes. The y-axis shows the estimated coefficient of being in the treated group in a year on Leverage. 2007 is used as the baseline. The dashed line indicates the 5% confidence interval.FIGURE 3 Long description.

Figure 12

FIGURE 4 Dynamic Effect of the 2008 Tax Change on Inbound ShiftersFigure 4 shows the effect of inbound profit shifting treated relative to control firms for the 2008 tax rate changes. The y-axis shows the estimated coefficient of being in the treated group in a year on Leverage. 2007 is used as the baseline. The dashed line indicates the 5% confidence interval.FIGURE 4 Long description.

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TABLE 10 Endogenous EntryTABLE 10 Long description.

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TABLE 11 RobustnessTABLE 11 Long description.

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TABLE 12 Additional ControlsTABLE 12 Long description.

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TABLE 13 Firm Clustered Standard ErrorsTABLE 13 Long description.

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TABLE 14 Firm Clustered Standard ErrorsTABLE 14 Long description.