Largest Accounting Firms (2026)

Deloitte reported aggregate member-firm revenue of US$74.5bn for the fiscal year ended 31 May 2026, up 5.7% in US dollars and 3.8% in local currency from US$70.5bn a year earlier. Headcount passed 500,000 people, compared with roughly 470,000 the previous year. Asia Pacific was the fastest-growing region at 7.5% in local currency, while the Technology & Transformation business grew 2.5%. Deloitte is also the largest advisory provider among networks surveyed by the International Accounting Bulletin, with advisory fee income of US$43.71bn in the 2026 World Survey.

PwC reported global gross revenues of US$60.2bn for the year ended 30 June 2026, an increase of 5.7% in US dollars and 3.5% at constant exchange rates. The figure placed PwC narrowly ahead of EY, whose fiscal year ends on the same date. In the International Accounting Bulletin's 2026 World Survey, PwC had the largest audit and assurance fee income of any network, at US$19.94bn, although its Asia-Pacific fee income fell 5% in that survey.

EY reported combined global revenue of US$56.97bn for the year ended June 2026, up 4.7% in local currency and 7.0% in US dollars from US$53.22bn. Headcount was 415,182 at the end of June 2026, up 2.2%, and the network provides services in more than 150 countries and territories. EY gives a five-year compound annual growth rate of 8.3% for FY21 to FY26. The gap to PwC was about US$3.2bn.

KPMG reported global revenue of US$39.8bn for the year ended 30 September 2025, up 5.1% in local currency and 5.4% in US dollars. Tax & Legal was its fastest-growing service line at 7.5%, followed by Audit at 6.0% and Advisory at 2.9%. KPMG had 276,030 people at the year end across 138 countries and territories. Its figures for the year to September 2026 had not been published when this list was compiled, so its position compares an earlier period with the other three Big Four firms.

BDO reported network revenue of US$11bn (€10bn) for the year ended 30 September 2025, up 4% in US dollars; including its alliance firms, revenue was US$16bn. The network-only figure is used here because RSM, the next comparable network, now reports without alliances. BDO had more than 94,900 people in 870 offices. In the 2026 IAB World Survey its accounting-services fee income of US$1.61bn was second only to ETL Global's.

Grant Thornton International reported record global revenues of US$8.5bn for the year ended 30 September 2025, up 6.1% in constant currency and 5.9% in US dollars. Headcount reached about 80,000, an increase of 5.3%, and 93 member firms reported revenue growth. In the IAB 2026 World Survey, Grant Thornton's advisory fee income of US$2.96bn was listed second among leading advisory providers after Deloitte, and its audit and assurance fee income was US$3.81bn.

RSM International reported worldwide revenue of US$7.7bn for the 12 months to December 2025, 4% above a restated 2024 figure of US$7.4bn. Both years exclude the US and Canada alliances that RSM divested in March 2025, so the figures are not comparable with the roughly US$10bn the network reported for 2024 before the change. The Americas contributed US$4.3bn, EMEA US$2.3bn and Asia Pacific US$1.1bn, and headcount grew 6.7% to 56,000.

Baker Tilly International reported record global revenues of US$6.8bn for the year ended 31 December 2025, an increase of 21.3% year on year. The network said the result moved it up two places to become the eighth-largest accounting network in the International Accounting Bulletin's World Survey, and that revenue had grown by nearly 70% over five years. Its growth rate was the highest of any network in this list apart from Kreston Global.

HLB reported global combined revenue of US$6.67bn for the year ended 31 December 2025, up 12% from US$5.96bn. Advisory accounted for 29% of revenue, audit and assurance 27%, tax 24% and accounting 16%. The network counts 58,538 professionals in 155 countries. Its revenue was about US$130m below Baker Tilly's and about US$170m above Crowe's, making positions eight to ten unusually close.

Crowe Global reported revenue of US$6.5bn for its 2025 financial year, growth of 12% after a 10% increase the year before. The network has 46,000 professionals working from 815 offices in more than 150 countries. Its growth rate matched HLB's and was among the highest of the larger networks.

Forvis Mazars reported combined global revenue of more than US$5.7bn for the year ended 31 August 2025, an increase of 11%. The figure combines Forvis Mazars Group SC, the international integrated partnership, and Forvis Mazars LLP in the United States. The group operates in more than 100 countries and territories. Unlike most networks in this list, the international group is a single integrated partnership rather than an association of independent member firms.

Moore Global's most recent dated revenue announcement, published in February 2025, reported a 13% rise to US$5.1bn. A Moore member-firm page published in April 2026 gives annual revenues of US$5.3bn, 234 member firms, 568 offices, 119 countries and more than 37,000 professionals, but does not state the year to which the revenue relates. The US$5.1bn figure is used for ranking because its period is identifiable; either figure would place Moore twelfth.

Kreston Global announced in March 2026 that network revenues had increased by 39% to US$4.3bn. Growth was led by North America at 72%, followed by the Middle East at 28%, Latin America at 13% and Europe at 7%. The announcement does not state the financial year end. The growth rate was the highest in this list and was concentrated in North America.

ETL Global reported fee income of US$3.34bn in the IAB World Survey 2026, growth of 14%, which ranked it 15th globally, up from 16th. The network says it has more than 31,000 people in over 1,600 offices across more than 60 countries and serves over 660,000 clients. ETL topped the IAB's accounting service-line table with fee income of US$1.90bn, ahead of BDO. It ranks lower here than in the IAB survey because several networks between them are omitted for lack of a published total.

Russell Bedford International reported global fee income of US$1.01bn for 2025, growth of 10%, of which 6% was organic and 4% came from eight new member firms. The network has more than 11,000 professionals in 396 offices across 105 countries. Audit accounted for 24% of its fee income and accounting for 23%.

UHY International reported record revenue of US$869.1m for 2024 in its annual review published in November 2025. The network has more than 180 member firms in nearly 100 countries and traces its origins to two founding firms in 1986. Its 2025 total had not been published when this list was compiled, so its figure covers an earlier year than most entries.