This study examines whether the volatility of interim estimates of the annual effective tax rate (ETR) provides ex ante information about the quality of firms' internal control environments. Recent research suggests that some firms selectively disclose internal control weaknesses (ICWs). Given the negative consequences associated with ICWs, it is important for capital market participants to be able to identify firms with ineffective internal controls in a timely manner. We find that firms with more volatile annual ETR estimates are more likely to report both tax‐ and nontax‐related ICWs in the current year. Our results also indicate that the volatility of annual ETR estimates declines following the remediation of tax‐related ICWs, but not following the remediation of nontax‐related ICWs. In addition, we find that ETR volatility in the current year is associated with the likelihood that a firm will report an ICW in the following year. Finally, we provide evidence that the volatility of annual ETR estimates is associated with the likelihood that a firm has an undisclosed ICW. In combination, our results suggest that the volatility of interim estimates of the annual ETR provides an ex ante signal of the likelihood that a firm's internal controls are ineffective.

Regulators and researchers have expressed concerns that social interaction leads auditors to unjustifiably trust managers, constituting a lack of sufficient professional skepticism. Using both an abstract laboratory experiment and a contextually rich experiment with practicing auditors we predict and find that higher Dark Triad auditors (those with higher levels of the shared core between psychopathy, narcissism, and Machiavellianism) are relatively more resistant to lapses in professional skepticism due to the effects of social interaction. This is likely driven by higher Dark Triad auditors' callousness, lack of empathy, and lack of response to social stimuli. In contrast, while higher social interaction initially increases lower Dark Triad auditors' unjustified trust in managers, this effect reverses in subsequent interactions when lower Dark Triad auditors observe evidence suggesting managers have reported aggressively. These findings add to research on the effect of auditor personality traits, audit‐client social interaction, and the interaction of these two variables, and suggest that practitioners and researchers account for the interplay of Dark Triad traits and social interaction and their effect on professional skepticism.

This study investigates the relation between audit regulation and cost of equity capital. There is scant empirical evidence on this relation because changes in audit regulation are frequently accompanied by other major regulatory changes. We exploit variation in the timing of regulatory changes induced by foreign governments' staggered allowance of PCAOB inspections. Using a difference‐in‐differences design, we find that foreign SEC registrants with auditors from countries that allow PCAOB inspections enjoy a lower cost of capital, relative to foreign SEC registrants with auditors from countries that prohibit inspections. Furthermore, we find that this cost of capital effect is attenuated for companies with higher‐quality governance mechanisms. Finally, we document that inspection access is associated with higher‐quality analyst forecasts, which suggests that this change in audit regulation reduces information risk for market participants.

We examine the usefulness of other comprehensive income (OCI) to debt investors in nonfinancial companies. Motivated by Merton's (1974) real options framework, we construct a measure of incremental OCI volatility, designed to capture the effect of OCI on overall firm asset volatility, which is a primary driver of credit risk in Merton's (1974) model. We find that the volatility of incremental OCI influences the likelihood of default, credit ratings, and the cost of debt. Overall, our evidence suggests that creditors use information from OCI in their assessment of firm credit risk and in pricing debt contracts.