PCAOB Adopts Amendments to Its Quality Control Standard

WASHINGTON, Sep. 9, 2026

The Public Company Accounting Oversight Board (PCAOB) today adopted amendments to certain provisions of QC 1000, A Firm’s System of Quality Control, and related amendments to PCAOB forms and the QC reporting rule.

The amendments will improve alignment, where appropriate, with other quality management standards and seek to reduce compliance costs without compromising the PCAOB’s statutory mission to protect investors and further the public interest in the preparation of informative, accurate, and independent audit reports.

“Strong, effective auditing standards underpin the PCAOB’s oversight, and QC 1000 is one of the most consequential standards that the Board has ever adopted,” said Chairman Demetrios (Jim) Logothetis. “The targeted amendments adopted today – which were informed by stakeholder feedback during the implementation process and continued scrutiny of the standard’s costs and benefits – help us not only to fulfill our critical responsibility of getting QC 1000 right, but also to establish a foundation for our proposed strategic goal of modernizing the PCAOB’s inspections with a QC-focused approach.”

The amendments to QC 1000 will:

  • Rescind the “design-only” requirement so that QC 1000 imposes requirements only on firms that are required to comply with applicable professional and legal requirements with respect to any “engagement”;
  • Provide increased flexibility in filling certain specified roles in the QC system by permitting roles to be assigned to non-firm personnel and divided among multiple individuals;
  • Rescind the requirement to have an External QC Function;
  • Narrow and simplify communication requirements relating to metrics that the firm communicates to external parties about its audit practice, firm personnel, or engagements;
  • With respect to identified engagement deficiencies, require evaluation of whether similar engagement deficiencies exist on other engagements only if the identified deficiency resulted or could result in (i) a failure to obtain sufficient appropriate evidence to support the conclusion reached on an engagement or (ii) an inappropriate overall conclusion on the subject matter of an engagement;
  • Revise the definition of QC deficiency to make clear that, when firms have implemented more than one quality response to address the same quality risk, they can take those other quality responses (e.g., compensating responses) into account when determining whether a QC deficiency exists;
  • Allow firms to select the date as of which they annually evaluate the effectiveness of their QC system, rather than requiring firms to evaluate as of September 30;
  • Revise the QC system evaluation conclusions to align more closely with the conclusions in other quality management standards, while retaining a structured process, including specified factors for consideration, to guide the evaluation; and
  • Simplify the requirements for retention of QC system documentation and abbreviate the retention period from seven to five years.

The amendments adopted today do not change the effective date of QC 1000, which is December 15, 2026. The amendments are subject to approval by the U.S. Securities and Exchange Commission (SEC). If approved by the SEC, the amendments to QC 1000 and to the related PCAOB rule and forms will become effective on December 15, 2026.

*****

About the PCAOB

The PCAOB is a nonprofit corporation established by Congress to oversee the audits of public companies in order to protect investors and further the public interest in the preparation of informative, accurate, and independent audit reports. The PCAOB also oversees the audits of brokers and dealers registered with the Securities and Exchange Commission, including compliance reports filed pursuant to federal securities laws.