Finance & Professional Services

Audit Services: Market Size, Growth & Forecast to 2030

The Audit Services market is valued at about $251 billion (2026) and is projected to grow at a 4.8% CAGR through 2030. The largest cost driver is Auditor labor and personnel compensation (65% of spend). North America leads demand at 42%.

Market size
$251.0 bn (2026)
CAGR to 2030
+4.8%
Buyer power
Favours buyers
Tracked suppliers
250

Projected market growth to 2030

Market size index, 2026 = 100, at the 4.8% CAGR.

1261181091001002026104.82027109.82028115.12029120.62030126.42031

Cost structure

Auditor labor and personnel compensation
65%
Litigation risk and professional liability insurance
15%
Technology, data analytics tools, and audit software
10%
Overhead, administrative, and travel costs
10%

Regional demand split

North America demand
42%
Europe demand
31%
Asia Pacific demand
18%
Latin America demand
5%
Middle East & Africa demand
4%

Key suppliers

DeloittePwCEYKPMGBig Four (PwC, EY, KPMG, Deloitte) combinedBDO USARSM USGrant Thornton
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Claight market analysis of proprietary and public data. Full report: /category-intelligence/audit-services