Key Takeaways
- • Private equity now controls stakes in 10 of the top 30 U.S. CPA firms, representing approximately one-third of the nation's largest accounting practices, with recent investments announced by Investcorp (PKF O'Connor Davies, ranked 27th) and Centerbridge Partners/Bessemer (Carr, Riggs & Ingram, ranked 25th).
- • PE firms have invested $28.7 billion into CPA firms over the past six years, driven by pressure on accounting firms to adopt cutting-edge technology, including AI systems, and achieve operational efficiency amid industry consolidation.
- • PE-backed consolidation is reshaping the competitive landscape beyond the Big Four, with Alpine Investors, Further Global, Lovell Minnick Partners, and other PE sponsors acquiring or investing in mid-tier firms including Armanino (20th largest), Grant Thornton, Baker Tilly, Eisner Advisory Group, Citrin Cooperman, Cherry Bekaert, Aprio, and Sikich.
- • Newly capitalized CPA firms are prioritizing M&A activity, technology infrastructure, and service line expansion to enhance competitive positioning across accounting, tax, and advisory verticals.
Summary
Private equity has emerged as a dominant consolidation force in the U.S. accounting industry, with one-third of the nation's 30 largest CPA firms now backed by PE capital. This trend accelerated when Carr, Riggs & Ingram (CRI, ranked 25th) and PKF O'Connor Davies (ranked 27th) announced PE investments on the same day, bringing the total PE-backed firms in the top 30 to 10. PKF received capital from Investcorp alongside a Canadian pension fund, while CRI secured backing from Centerbridge Partners and Bessemer Venture Partners. Neither party disclosed investment size or terms.
The scale of PE capital deployment in accounting is substantial. Over the past six years alone, private equity has invested $28.7 billion into CPA firms—a sum exceeding Deloitte's annual revenues. This capital influx reflects the industry's structural need to invest heavily in technology, including AI capabilities, and to achieve operational scale. According to PKF's statement, the strengthened balance sheet will enable "accelerated growth and enhanced competitive position" through increased M&A activity, cutting-edge technology investment, and new service line development.
The consolidation wave extends across the rankings. Beyond the most recent deals, PE sponsors have already invested in or acquired interests in other top-tier practices, including Armanino (20th largest, backed by Further Global), Grant Thornton, Baker Tilly, Eisner Advisory Group, Citrin Cooperman, Cherry Bekaert, Aprio, and Sikich. Additionally, Alpine Investors completed regional acquisitions including Alexander Almand & Bangs in Virginia and Gollob Morgan Peddy, demonstrating PE's appetite for bolt-on acquisitions alongside headline PE platform investments. Cohen & Company (47th largest) accepted capital from Lovell Minnick Partners, indicating PE interest across a broader range of firm sizes.
For institutional investors and alternative asset managers, the PE consolidation of accounting firms signals structural transformation in professional services. The race for scale is now directly tied to PE funding, creating competitive pressure on independent firms and positioning PE-backed platforms to compete more aggressively with the Big Four across mid-market and regional segments. The emphasis on technology investment and M&A flexibility suggests that further consolidation and service-line expansion will continue shaping the accounting industry landscape.
The scale of PE capital deployment in accounting is substantial. Over the past six years alone, private equity has invested $28.7 billion into CPA firms—a sum exceeding Deloitte's annual revenues. This capital influx reflects the industry's structural need to invest heavily in technology, including AI capabilities, and to achieve operational scale. According to PKF's statement, the strengthened balance sheet will enable "accelerated growth and enhanced competitive position" through increased M&A activity, cutting-edge technology investment, and new service line development.
The consolidation wave extends across the rankings. Beyond the most recent deals, PE sponsors have already invested in or acquired interests in other top-tier practices, including Armanino (20th largest, backed by Further Global), Grant Thornton, Baker Tilly, Eisner Advisory Group, Citrin Cooperman, Cherry Bekaert, Aprio, and Sikich. Additionally, Alpine Investors completed regional acquisitions including Alexander Almand & Bangs in Virginia and Gollob Morgan Peddy, demonstrating PE's appetite for bolt-on acquisitions alongside headline PE platform investments. Cohen & Company (47th largest) accepted capital from Lovell Minnick Partners, indicating PE interest across a broader range of firm sizes.
For institutional investors and alternative asset managers, the PE consolidation of accounting firms signals structural transformation in professional services. The race for scale is now directly tied to PE funding, creating competitive pressure on independent firms and positioning PE-backed platforms to compete more aggressively with the Big Four across mid-market and regional segments. The emphasis on technology investment and M&A flexibility suggests that further consolidation and service-line expansion will continue shaping the accounting industry landscape.
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