US accounting firms are facing a potential loss of over $400 million in fees if the Securities and Exchange Commission's proposal to roll back post-Enron audit rules is approved. This proposal aims to decrease the number of US-listed companies required to obtain an audit opinion on internal financial controls, a regulation initially implemented in 2002 after corporate scandals like Enron and WorldCom. The SEC suggests exempting companies with a public float below $2 billion, significantly raising the current threshold of $700 million. Additionally, future IPOs, regardless of their size, would be spared from this requirement for their initial five years.

This rollback is part of SEC Chair Paul Atkins' broader initiative to "make IPOs great again," which also includes plans to eliminate quarterly reporting. The SEC estimates that approximately 1,700 companies, representing 27% of all public companies, would be exempted by this proposal. Bob Conway, a former audit partner and regulator, noted that this change would significantly impact auditors' revenue. The Big Four accounting firms—EY, Deloitte, PwC, and KPMG—have all voiced opposition to the rollback, as have smaller firms and various investor groups.

Critiques of the proposal center on concerns about investor protection and financial stability. The Center for Audit Quality (CAQ) is advocating for a comprehensive cost-benefit analysis of the proposed reforms, emphasizing that independent auditor attestation strengthens controls, improves financial reporting, and enhances investor confidence. Some money managers and public interest groups, such as Americans for Financial Reform, worry that these changes could increase the risk of future financial scandals. While companies would still require audits of their financial statements, the exemption would remove the need for auditors to independently certify a firm’s internal financial processes, a key safeguard introduced by the Sarbanes-Oxley Act of 2002.