Does a lower (higher) labour force participation rate imply greater (lower) income tax evasion? An exploratory empirical inquiry for the U.S.

This exploratory study seeks to add to the income tax evasion literature by investigating a heretofore ignored potential determinant of aggregate federal personal income tax evasion in the U.S., namely, the labour force participation rate. It is hypothesized that the higher (lower) the labour force participation rate, the lower (greater) the degree of tax evasion. The empirical estimation supports this hypothesis, finding that a one unit (one percentage point) increase (decrease) in the labour force participation rate leads to a 9.1% decrease (increase) in income tax evasion. Thus, the declining labour force participation in recent years implies increased tax evasion problems for the U.S.     

CEO overconfidence and IRS attention

We examine the likelihood that the US Internal Revenue Service (IRS), in its enforcement role, will accord particular attention to firms that are managed by CEOs who exhibit over-confidence, given that such CEOs may be more aggressive in their tax policies and strategies. Using data from 7757 firms, we find that this is indeed the case. Such attention is even more pronounced in the instance of overconfident CEOs whose firms are financially constrained and/or financially distressed. We also find that the IRS has augmented its audit processes to give more attention to overconfident CEOs during and post financial crisis. This may be due to the increased vulnerability of their firms to external shocks, which consequently increases the incentives to embark on tax avoidance strategies, value-destroying investments, and/or highly biased financial reporting (and forecasting responses) to tax authorities. Our results are robust after accounting for the possibility of endogeneity and using a wide range of specifications, measures, and econometric models.     

Information processing costs and corporate tax avoidance: Evidence from the SEC’s XBRL mandate

The IRS uses information contained in financial statements as well as tax returns to detect tax avoidance behavior. We examine the impact on corporate tax avoidance behavior of reductions in the IRS’s information processing costs resulting from the mandatory adoption of XBRL for financial reporting. Motivated by the recent debate in the U.S. Congress over the cost-benefit of mandatory XBRL reporting for small firms, we pay particular attention to small firms, which inherently have relatively high information frictions. We find that the adoption of XBRL for financial reporting results in a significant decrease in tax avoidance. We further find that the negative relation between XBRL reporting and tax avoidance is less prominent for firms subject to more intense IRS monitoring in the pre-XBRL-reporting period. Overall, our results suggest that XBRL reporting reduces the cost of IRS monitoring in terms of information processing, which dampens managerial incentives to engage in tax avoidance behavior.     

IRS Attention

We study how public and private disclosure requirements interact to influence both tax regulator enforcement and firm disclosure. To capture IRS enforcement activities, we introduce a novel data set of IRS acquisition of firms’ public financial disclosures, which we label IRS attention. We examine the implementation of two new disclosure requirements that potentially alter IRS attention: FIN 48, which increased public tax disclosure requirements, and Schedule UTP, which increased private tax disclosure. We find that IRS attention increased following FIN 48 but subsequently decreased following Schedule UTP, consistent with public and private disclosure interacting to influence tax enforcement. We next examine how private tax disclosure requirements under Schedule UTP affected firms’ public disclosure responses. We find that, following Schedule UTP, firms significantly increased the quantity and altered the content of their tax‐related disclosures, consistent with lower tax‐related proprietary costs of disclosure. Our results suggest that changes in SEC disclosure requirements altered the IRS's behavior with regard to public information acquisition, and, relatedly, changes in IRS private disclosure requirements appear to change firms’ public disclosure behavior.     

Gaming the IRS’ Third-Party Reporting System: Evidence from Pari-Mutuel Wagering

This study examines whether taxpayers intentionally avoid Internal Revenue Service (IRS) third-party reports. In 2017 an IRS amendment created a quasi-exogenous shock that reduced third-party tax reporting of pari-mutuel gambling winnings from certain types of wagers. I consider the effect that this rule change had on taxpayer behavior. Using a difference-in-differences research design comparing thoroughbred racing in the United States to Canada, I find a 27% increase in gambler's investment into wager-types that became less likely to trigger third-party reports. Further, I provide evidence that this effect was because of third-party reporting, not withholding, and was stronger in more informed gambling populations. These findings suggest that taxpayers knowingly avoid third-party reports, enabling underreporting of income to the IRS. This has important policy implications because underreported individual income is the largest driver of the $496 billion annual gap between legal tax liability and actual tax collections in the United States.