About RSM
RSM: Empowering your future
RSM empowers middle market companies worldwide to take charge of change.
Our unique middle market perspective makes RSM the natural choice for growth-oriented, internationally active organizations seeking relevant insights and tailored, innovative solutions for a complex and changing world.
With a global reach spanning more than 120 countries, we instill confidence in a world of change by bringing the full power of RSM to make a lasting impact on our clients, colleagues and communities.
This unique RSM experience differentiates us among our clients and our people.
Client experience: Empowering our clients
As an RSM client, you will experience the confidence that comes from working with business advisors focused on you and your future. We understand your business and industry, and tailor our approaches to the ever-changing global business environment you face. Our professionals are committed to empowering you to thrive as you grow your business, mitigate risk and make critical business decisions.
Talent experience: Empowering our people
As an RSM employee, you will experience an inclusive culture that creates a sense of belonging and purpose, motivating you to grow forward in your career. Through a commitment to development and a deep understanding of individual skills and passions, you are empowered to make a positive impact on clients, colleagues and communities around the world.
Global perspective focused on your aspirations
The reality of operating as a middle market company in a multifaceted, global economy adds layers of complexity. Regulatory, operational, geopolitical and cultural challenges can create uncertainty and derail momentum for your business and industry.
RSM’s global perspective and industry knowledge, combined with our integrated capabilities, support your needs wherever you do business—ensuring seamless delivery, consistent quality and lasting impact, all to empower you to face your future with confidence.
A culture of inclusion
Our culture celebrates the differences among our talented people, while enabling them to embrace full ownership of their work and personal lives.
Alumni
Considering a return to the firm or interested in what’s next? Learn how we support and engage our alumni.
Our history
RSM US LLP traces its history back to 1926, when Ira B. McGladrey founded his own accounting firm in Cedar Rapids, Iowa, acquiring a seven-person office from Billings, Prouty and Tompkins to form the I.B. McGladrey Company. From those early beginnings to the global organization we are today, our story has always been about people: the clients who place their trust in us, the professionals who bring our values to life and the communities we serve.
In 2026, RSM celebrates a remarkable milestone: For 100 years we have been serving the middle market with insight, integrity and a deep commitment to understanding. Our centennial theme—RSM to the Power of 100: Exponential possibilities. Powered by a century of understanding—captures the strength of our history and foundation as well as the opportunities that lie ahead.
1926-1970
1970s-1980s
1990s
2000-2015
In 2005
The firm acquired American Express Tax and Business Services, which doubled the size of the firm.
In 2010
The firm became the title sponsor for the McGladrey Classic, a PGA Tour event.
In 2011
McGladrey & Pullen purchased RSM McGladrey from H&R Block, reuniting the two firms as a leading partner-owned provider of assurance, tax and consulting services focused on the middle market.
In 2013
The firm announced the relocation of its headquarters to Chicago. McGladrey LLP firm also launched its culture, diversity and inclusion efforts led by Rich Caturano.
In 2014
The firm established the RSM US Foundation, a tax-exempt public charity dedicated to building tomorrow's middle market leaders. The foundation supports educational outcomes through programs that help individuals develop career paths to become entrepreneurs or middle market business leaders.
In 2015
McGladrey changed its name to RSM US LLP and united with fellow firms in the RSM International network under the brand RSM. Proud of its heritage, the firm remained committed to Ira McGladrey's original concept of service--predicated on partners' personal attention to client needs--as it continued its quest to take the middle market to the global market.
2016-2020
In 2016
The firm celebrated its 90th anniversary of serving the middle market. As part of the celebration, the firm inducted its first class of Hall of Fame members and launched 90-90-9: Pursue Your Passion, an employee contest that awarded nine employees with $90,000 ($10,000 each) to fulfill their passions. Not surprisingly, given our focus on stewardship, each of the nine winners chose to use this opportunity to give back to the community.
In 2017
The firm joined the U.S. Chamber of Commerce to announce a new partnership dedicated to increasing awareness of the business and economic issues affecting the middle market. We also launched RSM Canada with an office 300-strong in the heart of Toronto’s financial district. We received numerous awards/recognitions for our firm’s workplace culture, including being named by Working Mother magazine as one of its 2017 Working Mother 100 Best Companies.
In 2018
We announced a new CEO Innovation Fund that provides people with the financial resources to cultivate their grassroots ideas. We joined more than 150 organizations nationwide in recognizing a “Day of Understanding,” hosted by CEO Action for Diversity & Inclusion™ to address bias and increase understanding in the workplace and beyond. We expanded our consulting services by joining forces with Explore Consulting. In conjunction with the PGA Tour, we expanded the RSM Birdies Fore Love charitable giving platform to enhance charitable donations raised through The RSM Classic. We launched our cutting-edge Industry Eminence Program, which positions analysts to understand, forecast and communicate economic, business and technology trends shaping the industries we serve. And we expanded our presence in Canada with the addition of three Alberta firms.
In 2019
We were named by Great Place to Work and Fortune as one of their 2019 Best Workplaces for Diversity, highlighting our firm’s continued commitment to diversity and inclusion. We joined forces with St. Petersburg-based Gregory, Sharer and Stuart. We celebrated the 10th anniversary of The RSM Classic, an RSM-sponsored PGA Tour event, which raises millions of dollars for those in need each year. We earned top marks in the 2019 Corporate Equality Index, the nation’s premier benchmarking survey and report on corporate policies and practices related to LGBTQ workplace equality, administered by the Human Rights Campaign Foundation. And we joined 177 other companies in signing the Business Statement for Transgender Equality.
In 2020
In response to the global pandemic, we implemented a COVID-19 Resource Center to provide middle market business leaders with timely and relevant information and resources to help them navigate through unprecedented times. We boosted our Salesforce practice by joining forces with MondayCall LLC, and also joined forces with the leaders and staff of Tate & Tryon P.C, and its wholly owned subsidiary, T3 Information Systems LLC. We held our 11th annual RSM Volunteer Week, with nearly 2,000 people participating in more than 60 virtual volunteer activities across the country and in Canada, due to COVID-19 pandemic restrictions. We selected six individuals to represent RSM in CEO Action for Racial Equity, a fellowship program launched by CEO Action for Diversity & Inclusion™. We joined Junior Achievement USA to launch JA Take Stock in Your Future®, a program that helps high school students understand the inner workings of the stock market, and helps demystify investing. We joined a consortium of more than 80 supporting companies, launched by Ascend, the largest nonprofit Pan-Asian membership organization for business professionals and executives in North America, to address the adverse impacts of the COVID-19 outbreak.
2021 - 2025
In 2021
We were honored by Great Place to Work® and People magazine as one of the 2021 People Companies that Care®. Earning a spot on this prestigious list means that RSM is one of the best companies to work for in the country. We enhanced our nonprofit practice by joining forces with the U.S. and Canadian operations of C Systems and Confluence Global. We joined Pledge 1%, a corporate philanthropy movement dedicated to making the community a key stakeholder in every business by empowering companies to donate 1% of produce, equity, profit or employee time to improve communities and the world. We were honored by Great Place to Work® and Fortune as one of the 100 Best Companies to Work For®. We launched the Middle Market Collaborative for Understanding, a group that actively enhances diversity, equity and inclusion within their organizations and across the broader middle market business community.
In 2025
RSM US LLP and RSM UK Holdings Limited formally launched a new transatlantic partnership effective Jan 1, 2026. The firms established a partner-owned platform designed to enhance global client service, align governance and incentives and accelerate growth. Under the new structure 23,000 professionals across the U.S., UK, Canada, Ireland, India and El Salvador, generating aggregate annual revenues of $5 billion.
2026+
In 2026
RSM marks an extraordinary milestone: 100 years of history serving the middle market with insight, integrity and a deep commitment to understanding.
Our centennial theme—RSM to the Power of 100: Exponential possibilities. Powered by a century of understanding—honors the foundation built over the last century and the momentum it creates today. For 100 years, our values have shaped who we are, earning the trust of our clients, our people and our communities. They are the reason RSM has grown, adapted and endured, and they remain at the heart of this firm.