Many authors relate a firm's performance to legal and political features and the regulatory environment in which it operates. This article compares firms' capital structure adjustments across countries and investigates whether institutional differences help explain the variance in estimated adjustment speeds. We find that legal and financial traditions significantly correlate with firm adjustment speeds. More narrowly, institutional features also relate to adjustment speeds, consistent with the hypothesis that better institutions lower the transaction costs associated with adjusting a firm's leverage. Such associations between institutional arrangements and leverage adjustment speeds are consistent with the dynamic trade-off theory of capital structure choice.

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.

In an efficient market, spreads will reflect both the issuer’s current risk and investors’ expectations about how that risk might change over time. Collin-Dufresne and Goldstein (2001) show analytically that a firm’s expected future leverage importantly influences the spread on its bonds. We use capital structure theory to construct proxies for investors’ expectations about future leverage changes and find that these significantly affect bond yields, above and beyond the effect of contemporaneous leverage. Expectations under the trade-off, pecking order, and credit-rating theories of capital structure all receive empirical support, suggesting that investors view them as complementary when pricing corporate bonds.