Robert Half International remains the largest supplier of finance/accounting temporary staffing in the US in terms of revenue with one-quarter of the market, according to a new report released by Staffing Industry Analysts. The annual list of largest US finance/accounting firms includes companies with revenue of at least $50 million in the US finance/accounting staffing segment in 2015. This year’s list included 11 firms, which combined to generate $3.9 billion of such revenue.

The market share held by the five largest finance/accounting temporary staffing firms has remained roughly the same since 2009, remaining in a range of 41% to 44% of the market during this period.

The five largest finance/accounting staffing firms in the US and their estimated 2015 staffing revenue are:

• Robert Half International: $1.85 billion, 25% market share
• Accounting Principals (Adecco): $358 million, 5% market share
• Kforce: $316 million, 4% market share
• Randstad Professionals: $304 million, 4% market share
• Aerotek (Allegis Group): $291 million, 4% market share

Corporate members of Staffing Industry Analysts can download the full report online.