RSM US LLP and RSM UK Holdings have revealed plans to form a transatlantic partnership, which is scheduled to take effect from 1 January 2026.
The partners from these two firms have almost unanimously voted in favour of the transatlantic partnership structure.
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Since the two firms announced their intent to bolster their relationship in October last year, the firms have worked toward the development of a partner-owned platform that optimises their capability to offer “quality” service to global clients, boost talent, and speed up growth.
This transatlantic alliance is expected to meet those goals by harmonising governance, including following a common approach to client service, investment strategies for future expansion, and financial incentives.
The partnership will see a combined workforce of 23,000 professionals across multiple regions, including the US, Canada, El Salvador, India, Ireland and the UK.
The firms anticipate generating a combined annual revenue of $5bn under this new structure.
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By GlobalDataBoth RSM US and RSM UK will continue to be independent members of the RSM International network.
RSM US managing partner Brian Becker has been named as the CEO of the new partnership.
Becker said: ”We are excited to create a new transatlantic partnership with shared values, enhanced reach and connected resources. The nearly unanimous vote in favour shows that partners from the US, the UK, Canada and Ireland are excited to join forces to build a future where we are in an even stronger position to serve the evolving needs of clients and cement our position as the preeminent provider of services designed for the middle market.
“This bold step builds on the momentum of our other recent investments – including in artificial intelligence and our digital core, new service offerings, and integrated solutions – to stay ahead of clients’ evolving needs.
“It also positions us for accelerated growth, with a scalable structure designed to support a $10 billion multinational partner-owned platform in the future. Together, we look forward to driving enhanced value for our clients, partners and talented employees around the world.”
RSM UK CEO Rob Donaldson said: ”This announcement reflects a continuation of the transformation of the RSM business in the UK over the last five years. We have been on a journey to become a more effective competitor to the largest players in the UK market whilst enhancing our ability to support our RSM network partners globally.
“We have, over the last 12 months, already seen new opportunities and tangible client wins that our firms could not have achieved independently.”
In September 2025, the Lerwick team of RSM UK was acquired by Scholes Chartered Accountants.
