On December 15, 2026, a new ethics standard issued by the Public Company Accounting Oversight Board (PCAOB) is scheduled to take effect. EI 1000, Integrity and Objectivity, replaces a broadly worded, 37-year-old rule with enumerated obligations governing auditor honesty, impartiality, and the documentation and escalation of unresolved disagreements with management.

In the second article in a series for Reuters’ Practitioner Insights Commentaries, following their earlier piece on the PCAOB’s new quality control rule, Glenn Agre partner Trevor J. Welch and associate Nathan J. Ades examine how EI 1000’s new documentation requirements could reshape malpractice litigation against auditors, potentially giving plaintiffs access to contemporaneous compliance records, internal consultation memoranda, and escalation reports that serve as powerful evidence of departures from the standard of care.

Read together with the firm’s first article on QC 1000, this piece shows how the two rules build on each other: QC 1000 generates evidence at the firm level, through annual quality control evaluations and External Quality Control Function reports, while EI 1000 generates evidence at the individual engagement level, through real-time documentation of an auditor’s judgment, consultations, and escalation of unresolved disagreements.

The rule has faced significant political headwinds, including a 2025 push in Congress to abolish the PCAOB entirely and a 9.4 percent cut to the agency’s 2026 budget. But as Senator Elizabeth Warren has warned, scaled-back audit oversight may only expand the universe of viable malpractice claims going forward.

Read more here.