Debt and Taxes: The Role of Tax Avoidance

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.