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Auditor RSM explores IPO to ward off private equity-backed rivals

Reported by Ft
Sep 30, 2026· 3 min read
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Key Takeaways
  • • RSM, the fifth-largest accounting firm in the US by revenue and seventh globally, is actively exploring an initial public offering to secure capital for major acquisitions and international expansion without relying solely on partner funding.
  • • The 100-year-old partnership has been sounding out bankers and upgrading internal systems to enable a potential stock market flotation, with conversations focusing on competitive positioning and investor appetite for what could be the largest accounting firm IPO to date.
  • • RSM's strategic pivot reflects industry consolidation pressures, particularly as mid-market-focused competitors including Grant Thornton and Baker Tilly have abandoned the partnership model by selling to private equity, creating a competitive urgency around capital access.
  • • Unlike the Big Four (Deloitte, EY, PwC, KPMG), RSM targets mid-market corporate clients rather than blue-chip enterprises, positioning an IPO as a capital-raising tool to compete against private equity-backed rivals pursuing similar acquisition strategies.
  • • No final decision on an IPO has been made; executives view equity markets as preferable to debt financing only if partner capital and other funding sources prove insufficient for the scale of acquisitions RSM intends to pursue.
Summary
RSM, one of the world's largest accounting firms, is actively exploring a potential initial public offering as a response to accelerating consolidation in the audit sector and the erosion of the traditional partnership model among its competitors. The 100-year-old partnership has resisted private equity acquisition during the substantial deal activity of the past five years, but now faces strategic pressure to reconsider its capital structure. The firm has begun sounding out investment bankers and overhauling internal systems to prepare for a possible public listing, according to people familiar with the matter.

Ranked as the fifth-largest accounting firm in the US by revenue and seventh globally, RSM operates in a distinctly different market segment than the Big Four (Deloitte, EY, PwC, KPMG). Instead of serving blue-chip multinational clients, RSM and its closest rivals target mid-market corporate clients, creating a separate competitive arena with different growth dynamics and capital requirements. Executives have become increasingly open to an IPO as they pursue larger acquisitions and expand into international markets—activities that may require capital beyond what can be raised internally from partners.

The timing of RSM's exploration reflects significant structural shifts in the accounting industry. Several of RSM's primary competitors, including Grant Thornton and Baker Tilly, have abandoned the partnership model entirely, selling to private equity sponsors. This development creates a two-fold strategic concern: these private equity-backed rivals may pursue aggressive acquisition strategies with ready access to sponsor capital, and they themselves may pursue public listings in coming years as their financial sponsors seek exit opportunities. RSM's IPO exploration appears designed to preempt a scenario where competitors gain a capital advantage.

According to sources familiar with discussions, RSM would proceed to public markets only if executives determine that partner capital and alternative funding sources such as debt cannot adequately support the firm's acquisition ambitions. Conversations with bankers have centered on the competitive landscape and the potential investor appetite for an accounting firm IPO—a transaction that could represent the largest such listing in the sector's history. However, no final decision has been made, and the firm remains evaluating whether public equity markets represent the optimal path forward relative to other capital structures available to it.

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Sources

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Ft Auditor RSM explores IPO to ward off private equity-backed rivals