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This paper examines internal controls, from both an information technology (IT) and non-IT perspective, in relation to the five components of the Committee of Sponsoring Organization's Internal Control-Integrated Framework (COSO 1992), as well as the achievement of one of COSO's three objectives-reporting reliability. Our sample consists of 490 firms with material weaknesses reported under Sarbanes-Oxley Section 404 during the first year of compliance. We classify the weaknesses by COSO component and as IT-related or non-IT-related. Our results support the interrelationships of the COSO Framework. The results also show that the number of misstated accounts is positively related to the number of weak COSO components (i.e., scope) and certain weak COSO components (i.e., existence). Firms with IT-related weak components report more material weaknesses and misstatements than firms without IT-related weak components, providing evidence on the pervasive negative impact of weak IT controls, especially in control environment, risk assessment, and monitoring.

SYNOPSIS This paper analyzes the degree to which material weaknesses (MWs) in internal control reported under the Sarbanes-Oxley Act of 2002 (SOX) affect the future reporting of MWs. Particularly, we examine information technology (IT) and non-IT MWs and their breakdown into specific IT-related entity-level, non-IT-related entity-level, and account-level deficiencies. Analysis reveals that most account-level and entity-level deficiencies occur at a significantly higher rate in SOX 404 reports with at least one IT MW than in MW reports with only non-IT MWs. Further, the presence and count of both types of MWs and all three types of deficiencies are associated with increased future MWs, as are lower profitability, non-Big 6 auditor, and firm complexity. Specific control deficiencies related to senior management, training, and IT control environment have the strongest impact on future MWs. These results indicate that effective corporate governance of both the IT and non-IT domains is pivotal in establishing and maintaining strong internal controls over financial reporting. Data Availability:  Data are available from the public sources identified in the paper.