Have Critical Audit Matter Disclosures Indirectly Benefitted Investors by Constraining Earnings Management? Evidence from Tax Accounts

Prior research indicates that expanded audit reports, which disclose financial statement matters that involved especially challenging, subjective, or complex auditor judgment (known as critical audit matters [CAMs] in the U.S.), have fallen short of their objective to provide investors with useful information. In this study, we investigate whether the disclosure of tax-related CAMs indirectly benefits investors by constraining tax-related earnings management. Such a finding would indicate that CAM disclosure has increased auditor and/or management scrutiny of the underlying financial statement areas. We find that tax-related CAM disclosures are associated with (1) a lower likelihood that the audited company uses tax expense to meet analysts' consensus forecasts, and (2) increases in the reported reserve for prior-period unrecognized tax benefits (UTBs). Our findings should assist the Public Company Accounting Oversight Board (PCAOB) with their post-implementation review of the new U.S. auditor reporting requirement