Empirical research has struggled to show that variation in corporate capital structure arises from variation in estimated corporate income tax rates. We argue that, in previous studies, both the tax rates applied to multinational corporations and the taxable income earned have been mismeasured. Using the Bureau of Economic Analysis annual survey sample combined with each firm's income and country specific tax rate, we find that firms do have higher leverage ratios and lower interest coverage ratios when they operate in countries with higher tax rates, as theory would suggest. The trade-off theory of capital structure continues to have empirical support.

Recent research has emphasized the impact of transaction costs on firm leverage adjustments. We recognize that cashflow realizations can provide opportunities to adjust leverage at relatively low marginal cost. We find that a firm's cashflow features affect not only the leverage target, but also the speed of adjustment toward that target. Heterogeneity in adjustment speeds is driven by an economically meaningful concept: adjustment costs. Accounting for this fact produces adjustment speeds that are significantly faster than previously estimated in the literature. We also analyze how both financial constraints and market timing variables affect adjustments toward a leverage target.

We investigate a particular aspect of creditor rights, judicial efficiency, and its influence on firms' corporate leverage in 69 countries. Increasing creditor rights makes credit more readily available due to greater loan supply, but firms use less leverage to avoid premature liquidation. We find that efficient judicial systems are associated with lower corporate leverage ratios. Managers perceive higher leverage in the presence of more efficient judicial systems as a serious threat to their jobs or private benefits continuing. Our results indicate that stronger creditor rights alone do not explain corporate leverage without taking into account efficient enforcement of these rights.