The Public Company Accounting Oversight Board’s inspection staff found noticeable improvements in the deficiency rates of the six largest global auditing firms, according to a report Monday.
In 2024, the PCAOB observed a tangible decrease in Part I.A deficiency rates, on average, across all inspected firms, as well as a substantial improvement, in the aggregate, among the largest firms it inspects annually. The improvement follows increased efforts by the PCAOB to encourage firms to reverse the trend of rising deficiency rates following the pandemic.
“We challenged the audit profession to do better for America’s investors, and these significant improvements demonstrate real progress in protecting investors,” said PCAOB chair Erica Williams in a statement. “Still, our work is far from over, and I urge the audit profession to build on this momentum.”
For all inspected firms, the aggregate Part I.A deficiency rate decreased to 39% in 2024, down from 46% in 2023. For the Big Four U.S. firms (Deloitte, EY, KPMG and PwC), which as of Dec. 31, 2024, collectively audit about 80% of the market capitalization of public companies, the aggregate Part I.A deficiency rate decreased to 20% in 2024, down from 26% in 2023.
The aggregate Part I.A deficiency rate for the six U.S. global network firms (BDO USA, Deloitte, EY, Grant Thornton, KPMG and PwC) decreased to 26% in 2024, from 34% in 2023.
Results at the eight annually inspected U.S. non-affiliated firms held steady, decreasing to 52% in the aggregate in 2024, compared to 53% in 2023 (when the eight inspected firms were Marcum, RSM US, Crowe, Withum, Moss Adams, Baker Tilly US, B F Borgers and Cohen & Company, Ltd., though BF Borgers was suspended last year and Marcum was acquired by CBIZ). While the same firms are not inspected year-to-year, the PCAOB saw improvements at the non-affiliated firms and global network triennially inspected firms. Aggregate deficiency rates at NAF triennially inspected firms decreased from 67% in 2023 to 61% in 2024, and GNF triennially inspected firms decreased from 35% in 2023 to 26% in 2024.
Williams has called on firms to improve their audit quality since she became chair of the PCAOB in 2022, and the PCAOB has been focusing on encouraging auditing firms to address their high deficiency rates coming out of the pandemic. Some of the initiatives include publishing more information, resources and tools to help firms improve their audit quality; increasing transparency; engaging regularly with audit firms; providing focused support to smaller firms; publishing implementation guidance for new PCAOB standards; prioritizing guidance and communication regarding remediation submissions for quality control deficiencies; engaging directly and regularly with U.S. audit committees; and increasing the PCAOB’s focus on the effect of firm culture on audit quality.
The PCAOB began seeing deficiency rates leveling off at the largest firms last year when it released its 2023 inspection results for them. On Monday, the PCAOB released separate inspection reports for the six largest firms.
At BDO USA, P.C, 18 of the 30 audits reviewed in 2024 were included in Part I.A of the report due to the significance of the deficiencies identified, a 60% deficiency rate. The identified deficiencies mainly related to BDO’s testing of controls over and/or substantive testing of revenue and related accounts, goodwill and intangible assets, and business combinations. However, that represented an improvement over BDO USA’s 2023 results, when 25 of the 29 audits reviewed by the PCAOB in 2023 were included in Part I.A, an 86% Part I.A deficiency rate.
At Deloitte & Touche LLP, nine of the 63 audits reviewed by the PCAOB in 2024 were included in Part I.A of the report due to the significance of the deficiencies identified, for a 14% Part I.A deficiency rate. The identified deficiencies mainly related to Deloitte’s testing of controls over and/or substantive testing of revenue, allowance for credit losses, and leases. That too was an improvement for Deloitte, where in its 2023 report, 12 of the 56 audits reviewed by the PCAOB in 2023 were included in Part I.A of the report, translating into a 21% Part I.A audit deficiency rate.
At Ernst & Young LLP, 18 of the 64 audits reviewed by the PCAOB in 2024 were included in Part I.A of this report due to the significance of the deficiencies identified, a 28% Part I.A deficiency rate. The identified deficiencies primarily related to EY’s testing of controls over and/or substantive testing of revenue and related accounts, inventory and long-lived assets. That again was an improvement over 2023’s inspection report for EY, when 22 of the 59 audits we reviewed in 2023 are included in Part I.A, for a 37% deficiency rate.
At Grant Thornton LLP, 13 of the 27 audits reviewed by the PCAOB in 2024 were included in Part I.A of this report due to the significance of the deficiencies identified, a 48% Part IA deficiency rate. The identified deficiencies primarily related to the firm’s testing of controls over and/or substantive testing of revenue and related accounts and inventory. While a 48% deficiency rate may seem high, it was better than the 54% rate on the 2023 inspection report for GT, when 15 of the 28 audits reviewed in 2023 were included in Part I.A.
For KPMG LLP, 13 of the 64 audits reviewed in 2024 were included in Part I.A of its report due to the significance of the deficiencies identified, a 20% Part I.A deficiency rate. The identified deficiencies mainly related to the firm’s testing of controls over and/or substantive testing of revenue and related accounts and allowance for credit losses. That too was an improvement over the 15 of 58 audits reviewed in 2023 that were included in Part I.A of the 2023 report on KPMG, a 26% Part I.A deficiency rate.
For PricewaterhouseCoopers LLP, 10 of the 64 audits reviewed by the PCAOB in 2024 were included in Part I.A of the report due to the significance of the deficiencies identified, a 16% Part I.A deficiency rate. The identified deficiencies primarily related to the firm’s testing of controls over and/or substantive testing of revenue and related accounts and the allowance for credit losses. That was comparable to the 2023 report for PwC, when 10 of the 57 audits reviewed by the PCAOB in 2023 were included in Part I.A of the report, an 18% Part I.A deficiency rate.