24 OCT 2025 / M&A UPDATES

RSM US and UK Form $5B Transatlantic Partnership

- MYCPE ONE Insights Team

Summary

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Chicago-based RSM US LLP and London-based RSM UK Holdings Limited have agreed to form a transatlantic partnership from January 1, 2026, creating a unified, partner-owned platform to enhance client services and talent development. The alliance, that brings together more than 23,000 professionals from six countries and is expected to generate about $5 billion in annual revenue, supports the future goal of creating a $10 billion multinational partner-owned platform.

Chicago-based RSM US LLP and London-based RSM UK Holdings Limited have voted overwhelmingly to form a new transatlantic partnership, effective January 1, 2026. The near-unanimous approval by partners of both firms sets the stage for a unified, partner-owned platform designed to enhance global client service, accelerate growth, and strengthen talent development across markets.

The combined organization will include more than 23,000 professionals across the United States, United Kingdom, Canada, Ireland, India, and El Salvador, generating approximately $5 billion in annual revenue. The partnership will align governance, financial incentives, client service models, and growth investments under a shared strategic framework.

“We are excited to create a new transatlantic partnership with shared values, enhanced reach, and connected resources,” said Brian Becker, RSM US managing partner and CEO of the new partnership. “This bold step positions us for accelerated growth and a scalable structure designed to support a $10 billion multinational partner-owned platform in the future.”

Rob Donaldson, CEO of RSM UK, added, “This announcement marks a defining moment for our firms on both sides of the Atlantic. Our new partnership allows us to make quicker, bolder decisions and deliver greater value to clients worldwide. It also creates new pathways for our people to collaborate, learn, and grow across borders.”

Both firms will continue as independent members of RSM International, which serves clients in more than 120 countries.

Until next time…

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