Top 10 Biggest Consulting Firms in the USA

Anagha S Anagha S
Jan 4, 2023 9 min read
Top 10 Biggest Consulting Firms in the USA

Since the establishment of various industries amongst humankind, we have evolved from primary and secondary industries to focus more on tertiary industries today. Services are the most integral part of tertiary industries.

Inadvertently, we have a plethora of professional services that help corporations, governments, and other organizations with various kinds of assistance on a variety of matters.

Consulting firms have grown to help their clients in order to address and solve bigger problems, avoid mistakes and capitalize on relevant opportunities. Today they have become an indispensable part as far as any organization that aims to prosper is concerned.

This article will look at some of the best consulting firms in the United States of America that are relied on by companies. However, they are not structured as per any rankings.

Boston Consulting Group
Kearney
Deloitte
Mercer
Oliver Wyman
McKinsey & Company
LEK Consulting
Booze Allen Hamilton
EY Parthenon
FTI Consulting

Boston Consulting Group

Company Name Boston Consulting Group (BCG)
Founded 1963
Founders Bruce Henderson
Headquarters Boston, Massachusetts, United States
Revenue $11.0 billion (2021)
Area Served Worldwide
Specialized In Management Consultancy Services
Website www.bcg.com
Boston Consulting Group
Boston Consulting Group

This Boston-based management consulting firm is one of the β€œBig Three” management consultancies. With an aim to tackle various challenges and identify better opportunities in business and society, it was founded in 1963 by Bruce Henderson along with other BCG partners.

With in-depth knowledge in consulting, technology design management, and corporate ventures, BCG today is one of the best consulting firms in the United States of America as well as the world employing more than 25,000 people across 50 countries.

Over the years they have expanded their expertise further by including industries like oil and gas, automotive, consumer products, aerospace, defense, and much more.

Further, they have gained a very respectable position in the business world for their healthy work environment, workplace equality environmental records, Global culture, etc. They have also received the human rights campaign award for workplace equality innovation in 2022.

Kearney

Company Name Kearney
Founded 1926
Founders Andrew Thomas Kearney
Headquarters Franklin Center, Chicago, United States
Revenue $1.4 billion (2019)
Area Served Worldwide
Specialized In Management Consultancy Services
Website www.kearney.com
Kearney
Kearney

Headquartered in Chicago. Kearney is a global management consulting firm that has more than 4000 people working for them. It was founded in 1926 by Andrew Thomas Kearney.

They work with almost 3/4 of the companies that are listed in the Fortune Global 500 Β apart from other governmental and non-governmental organizations. They have branches across 40 countries which shows their impeccable ability to be distinct regardless of their geographical location.

They are known for their humbleness and approachability. The collective passion for innovative client work and zeal to provide excellent customer service has helped them consistently rank as one of the best consulting companies globally. Kearney has also received the tag of the best place to work by Dayton Business Journal for the fourth consecutive year.

Deloitte

Company Name Deloitte Touche Tohmatsu Limited
Founded 1845
Founders William Welch Deloitte
Headquarters London, England
Revenue $59.30 billion (2022)
Area Served Worldwide
Specialized In Management Consultancy Services, Financial Advisory, Risk Management
Website www2.deloitte.com
Deloitte
Deloitte

Deloitte is a professional services network that extends services of high quality in areas including analytics and cloud computing. Founded in 1845, Deloitte continues to set its bar high for professional advising firms in every arena from that analytics and business strategy to risk assessment and enterprise technology.

They are one of the largest professional services networks in the world with annual revenue close to $50 billion. They look forward to understanding and improving the way we look at marketplace challenges to continue delivering measurable and sustainable results to the community.

With over 175 years of service, Deloitte spans over 150 countries impacting the lives of 330,000 people. They continue to aim to do better things to help their clients realize their ambitions and make a positive impact on society. Deloitte was also given the Reader's choice award for being one of the top employers in the country by Careers & the disABLED magazine in 2020.

Mercer

Company Name Mercer
Founded 1945
Founders William M. Mercer
Headquarters New York City
Revenue $4.3 billion (2022)
Area Served Worldwide
Specialized In Management Consultancy Services, Finance Management, Asset Management
Website www.mercer.com
Mercer
Mercer

Mercer is the world's largest human resources consulting firm based in New York. They have a commendable global presence employing more than 25,000 people across over 130 countries. It was founded back in 1945 by William M. Mercer.

Being a human resource firm they specialize in helping their clients to improve the efficiency and talents of their people. They have been number one in the industry for several years becoming the most popular consulting firm in the arena of health, retirement, talent, and asset management.

For over 75 years now, Mercer has been redefining and reshaping the ways in which health and well-being are. They are a leading consulting firm and a trusted advisory that builds sustainable futures for its clients, colleagues, and communities. Mercer was also recognized as the World’s Best Management Consulting Firms 2022 by Forbes.

Oliver Wyman

Company Name oliverwyman.com
Founded 1984
Founders Alexander Oliver and William (Bill) Wyman
Headquarters New York City, New York Β· United States
Revenue US$2.5 billion (2021)
Area Served Worldwide
Specialized In Management Consulting Services
Website www.oliverwyman.com
OliverWyman
OliverWyman

Serving over thousand global clients during its 50 years of service, this New York-based management consulting firm continues to be one of the topmost consulting firms in the USA as well as the world. It was founded in 1984 by Alex Oliver and Bill Wyman.

It has more than 60 offices across Europe, North America Asia Pacific, and the Middle East. They Are known for their banking and financial services which are justified by the fact that they serve more than 80% of the world’s largest hundred financial institutions.

They believe that their dynamic and entrepreneurial culture makes their services all the more effective. They combine their specialized expertise with their extensive industry knowledge in the fields of risk management, strategy operations, and organization transformation.

They strive forward to improve their operations, optimize their business and accelerate the performance of the organization. Oliver Wyman was listed under Fortune 100 best place to work in 2019. It is also frequently tagged in the list of top management firms globally.

McKinsey & Company

Company Name McKinsey & Company
Founded 1926
Founders James O. McKinsey
Headquarters New York
Revenue US$15 billion (2022)
Area Served Worldwide
Specialized In Management Consulting Services
Website www.mckinsey.com
McKinsey and company
McKinsey and Company

Headquartered in New York McKinsey and company, is one of the best consulting firms in the USA. They are known for their cutting-edge strategic approaches and consulting services. It was founded by James O McKinsey in 1926. He was a Professor at the University of Chicago.

With a commendable group of zealous employees being the backbone of the company, they have garnered great success in the industry. In fact, a large number of CEOs on the Fortune 500 list come from the McKinsey alumni pool.

At a time when companies need to simultaneously bring in economic growth, sustainability, and inclusion, McKinsey and company help their client to prosper through this tricky part sustainably by driving innovation and reducing environmental impact.

The above graph shows the consulting firms with their average prestige scores in the USA
The above graph shows the consulting firms with their average prestige scores in the USA

LEK Consulting

Company Name Booz Allen Hamilton Holding Corporation
Founded 1983
Founders James Lawrence, Iain Evans, Richard Koch
Headquarters London, England
Revenue US$800 million (2022)
Area Served Worldwide
Specialized In Strategy Consulting Services
Website www.lek.com
LEK Consulting
LEK Consulting

LEK Consulting was founded in 1983 by James Lawrence, Iain Evans, and Richard Koch, who were earlier Bain & Company Partners. Today they have become one of the top management consulting firms operating across 21 offices worldwide employing 1400 people.

They are best regarded for their work in private equity and the healthcare sector. Through their deep industry expertise and rigorous analysis, they enable them to achieve better results.

They have been featured in reputed journals like the Business Review, the Wall Street Journal, the Financial Times, and so on.

Booze Allen Hamilton

Company Name Booz Allen Hamilton Holding Corporation
Founded 1914
Founders Edwin G. Booz, James L. Allen, Carl L. Hamilton
Headquarters McLean, Virginia, US
Revenue US$8.36 billion (2022)
Area Served Worldwide
Specialized In Management and Technoogy Consulting
Website www.boozallen.com
Booze Allen Hamilton
Booze Allen Hamilton

Booze Allen Hamilton has been a leading management consulting firm for a long time serving government, business, and military organizations across the world. This Virginia-based company has more than 80 global offices employing 29,200 employees ranging from engineers, software developers, technologists, scientists, and consultants.

It was started in 1914 by Edwin G. Booz, James L. Allen, and Carl L. Hamilton. Their area of expertise is largely on cyber security, digital technologies, and data analytics. They have won the β€œWorld’s Most Ethical Companies” award thrice from the Ethisphere Institute.

With a strong-headed commitment towards sharing diversity, equity values, environmental conservation, social responsibility, and excellent governance practices, Booze Allen Hamilton continues to be one of the best management consulting firms not only in the United States of America but also across the globe.

EY Parthenon

Company Name EY Parthenon
Founded 2014
Founders William Bill Achtmeyer and John C. Rutherford
Headquarters Boston, Massachusetts, United States
Revenue $2.3 billion (2019)
Area Served Worldwide
Specialized In Strategy Consulting
Website www.ey.com
EY Parthenon
EY Parthenon

The Parthenon Group was founded in 1991 by William Bill Achtmeyer and John C. Rutherford, two former Bain & company directors. It was then called the Parthenon Group which later became EY Parthenon after they merged with Ernst & Young in 2014.

Today they are a leading global strategy consulting company. The merger has helped the company to step up its value chain efforts and to go beyond audit services and expand its business thereby giving novel entry points to its clients.

Through their ambitious corporate strategy and well-honed private equity undertakings, EY Parthenon has been in going to rise above their competitors like Bain, McKinsey, and BCG. In 2021, Ey Parthenon was ranked 8th in the list of Top 25 Strategy Consulting firms by the consultancy.uk.

FTI Consulting

Company Name FTI Consulting
Founded 1982
Founders Joe Reynolds, Dan Luczak
Headquarters Washington, D.C., U.S.
Revenue $2.3 billion (2019)
Area Served Worldwide
Specialized In Corporate Finance, Economic consulting
Website www.fticonsulting.com
FTI Consulting
FTI Consulting

FTI Consulting is one of the largest financial consulting firms in the USA and the world. They have earned their own space in the field of corporate finance, economics consulting, forensic and litigation consulting Technology, and strategic communications.

It was founded in 1982 as Forensic Technologies International Limited by Joe Reynolds and Dan Luczak. They have to their credit in many high-profile, media-centric cases including the Bernard Madoff fraud, the Lehman Brothers and General Motors bankruptcies, the Bush v. Gore case, and the Major League Baseball steroid investigations of January 2020.

Conclusion

The consulting industry is roughly responsible for over 2 million jobs in the United States. The top revenue-generating streams in the consulting industry fall under management, accounting, scientific, and technical consulting services.

There is a number of consulting firms present in the USA, each falling under a different category. The list of the top 10 consulting firms in the USA is shared above.

FAQs

What is the biggest consulting firm in the US?

Some of the biggest consulting firms in the US are McKinsey & Company, Deloitte Consulting LLP, Bain & Company, Boston Consulting Group, etc.

What is Big 4 Consulting?

The Big 4 consulting firms are the group of four largest consulting firms that accounts for nearly 40% of the industry. The big 4 include consulting firms like Deloitte, Ernst & Young (EY), PricewaterhouseCoopers (PwC), and Klynveld Peat Marwick Goerdeler (KPMG).

What is a Tier 3 Consulting firm?

Tier 1 consulting firms are the top most consulting firms with Tier 2 consulting firms accounted as the next big consulting firms. Whereas Tier 3 consulting firms are the modest consulting firms that can move up to their position in the future by fulfilling the criteria of Tier 1 and Tier 2 firms. Β 

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