The 2026 IPA 500 rankings are more than a list of the nation’s largest accounting firms. They offer a snapshot of how growth is changing across the profession, with mergers and acquisitions, private equity and strategic investment driving many of the year’s biggest moves.
In the first episode of INSIDE the IPA 500, Chelsea Summers, executive director of INSIDE Public Accounting, and Rob Brown break down the newly released rankings and the trends behind them. Together, they examine the firms entering, exiting and climbing the list while exploring what those changes reveal about today’s competitive landscape.
Consolidation Reshapes the Rankings
One of the biggest stories is the pace of consolidation. Thirty-five firms that appeared in last year’s IPA 500 were acquired, creating movement throughout the rankings and lowering the revenue threshold for firms entering the list. Consolidation is no longer limited to the profession’s largest firms but is reshaping the middle of the rankings as well.
Private Equity Sets the Pace
Private equity emerged as the defining theme throughout this year’s rankings. Every new entrant to the IPA 100 is backed by private equity, and nine of the 10 fastest-growing firms share the same distinction.
Rather than steadily climbing the rankings through incremental growth, many of today’s fastest-growing firms are rapidly building scale through acquisitions. As the hosts note, private equity appears in nearly every major storyline across the rankings, from new entrants and the fastest-growing firms to changes in the revenue threshold itself.
Organic Growth Still Matters
The discussion also contrasts organic growth with acquisition-driven growth. While average organic growth among IPA 100 firms declined to 7.0% from 7.8% last year, overall growth increased from 10.4% to 12.8% because of continued merger activity.
For independent firms, that doesn’t mean organic growth is no longer possible. Instead, it underscores the importance of pursuing growth intentionally through disciplined pricing, leadership focus and a deliberate long-term strategy. The larger question, Brown suggests, is whether organic growth alone is enough to compete against firms accelerating expansion through acquisitions.
Looking Beyond the Rankings
The episode also highlights firms making significant gains outside the IPA 100, reinforcing that some of the profession’s most interesting stories are unfolding throughout the broader IPA 500. As Brown puts it, the rankings are not simply a measure of firm size but “a map of who’s moving.”
Looking across the data, Summers closes with two overarching takeaways. Private equity-backed firms and acquisitions are setting the pace for growth across the profession. At the same time, independent firms can still compete successfully, but doing so requires an intentional strategy in an environment where competitors increasingly have access to outside capital.
The episode launches INSIDE the IPA 500, a new podcast series exploring the data and trends behind IPA’s annual rankings. Future episodes will dive deeper into findings from the 2026 IPA Practice Management Report, examining topics such as compensation, leverage, offshoring and other factors shaping the future of public accounting.
