Company lists · Data refreshed September 2026

Top 25 Business services companies based in the United States

RevenueBase identified 2,270 company matches for business services companies associated with the United States as of September 2026 and tracks 17,217 professional contacts across them, including 3,488 with verified work emails. New York is the largest hub.

This list covers company matches for business services companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built
2,270Companies
17,217Contacts tracked
3,488Verified emails
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The 25 largest business services companies based in the United States

Ranked by team size
Top 25 of 2,270 company matches for business services companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchRoanoke, VA, United StatesHQ recorded Sep 19, 2026201-500496 contacts →

Exact match

“Providing Professional Business Advisory and Consulting Services including tax, accounting and IT services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2Exact matchSan Jose, CA, United StatesHQ recorded Sep 19, 2026501-1,000493 contacts →

Exact match

“Sensiba’s comprehensive accounting, tax, and consulting services help businesses and people solve problems, navigate complexity, and build a foundation for sustainable growth.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchRaleigh, NC, United StatesHQ recorded Sep 19, 2026201-500244 contacts →

Exact match

“ScottMadden is a management consulting firm that does what it takes to get the job done right.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4Exact matchRye, NY, United StatesHQ recorded Sep 19, 2026501-1,000231 contacts →

Exact match

“GreenPoint specializes in providing value-added professional services to a broad base of and other companies worldwide.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchHouston, PA, United StatesHQ recorded Sep 19, 2026n/a149 contacts →

Exact match

“Accounting Solutions provides a wide range of services to individuals and businesses in a variety of industries.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchSunnyvale, CA, United StatesHQ recorded Sep 19, 202651-20091 contacts →

Exact match

“50+M&A TRANSACTIONS | 90+% RECEIVE FUNDING 100+TEAM MEMBERS | 10K+EXECUTIVES IN TRIVIUM NETWORK Trivium is a Finance, Accounting, Human Resources, and Tax consulting firm offering…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Sep 19, 2026n/a90 contacts →

Exact match

“A company that provides business services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchWoodland Hills, CA, United StatesHQ recorded Sep 19, 202651-20078 contacts →

Exact match

“K&A was founded in 1939 by entrepreneurial Certified Public Accountants who specialized in providing tax, bookkeeping, business management and audit services to owner-operated…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9Exact matchMiramar, FL, United StatesHQ recorded Sep 19, 202611-5076 contacts →

Exact match

“GBS Group is a business consultancy team offering comprehensive advice across multiple business areas.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchButler, PA, United StatesHQ recorded Sep 19, 202651-20073 contacts →

Exact match

“Alliance for Nonprofit Resources (ANR) was founded to provide affordable administrative services to businesses and nonprofits of all sizes.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchChicago, IL, United StatesHQ recorded Sep 19, 202651-20072 contacts →

Exact match

“Bostrom is a professional services firm offering comprehensive management, consulting and outsourcing to the not-for-profit community.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12Exact matchAntioch, IL, United StatesHQ recorded Sep 19, 202651-20072 contacts →

Exact match

“We help business owners get out of the frustration that comes with messy or unclear financials and replace it with systems, consistency, and advice they can actually rely on.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchBethesda, MD, United StatesHQ recorded Sep 19, 202651-20064 contacts →

Exact match

“With a tradition of excellence since 1924, Grossberg Company, LLP is one of the Washington DC area premier providers of accounting, tax and business consulting services.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchGaithersburg, MD, United StatesHQ recorded Sep 19, 202651-20061 contacts →

Exact match

“Lanigan Ryan is a team of CPAs, Senior Business Consultants and Associates who specialize in the growth and development of privately-owned companies.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchArlington, TX, United StatesHQ recorded Sep 19, 202611-5061 contacts →

Exact match

“We provide accounting, tax, audit and business consulting services to clients both nationally and locally from our home in Arlington, Texas, in the Dallas-Fort Worth Metroplex.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 202651-20055 contacts →

Exact match

“At PBO Advisory Group, we assess, outsource, and advise in the areas of accounting & finance, human resources, human capital consulting, and business operations to increase…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchMilford, MA, United StatesHQ recorded Sep 19, 2026501-1,00054 contacts →

Exact match

“Growing and right-sized human services agencies choose the shared business and management consulting services of Human Services Management Corporation so they can effectively…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchBethlehem, PA, United StatesHQ recorded Sep 19, 202651-20053 contacts →

Exact match

“On November 1, 2022, Concannon Miller team members joined CLA (CliftonLarsonAllen LLP).”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 202611-5052 contacts →

Exact match

“About PKF San Diego, LLP For almost 30 years, PKF San Diego, LLP has been a trusted partner for businesses and individuals, delivering expert financial guidance with a commitment…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchBakersfield, CA, United StatesHQ recorded Sep 19, 202651-20051 contacts →

Exact match

“As businesses evolve in response to new economic and technological opportunities, so does the accounting and consulting firm of Barbich Hooper King Dill Hoffman.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchGreenville, SC, United StatesHQ recorded Sep 19, 2026201-50047 contacts →

Exact match

“Decosimo is now Elliott Davis Decosimo.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22Exact matchOntario, CA, United StatesHQ recorded Sep 19, 202611-5046 contacts →

Exact match

“We’re the Certified Public Accountants and Business Consultants that companies rely on.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchIrvine, CA, United StatesHQ recorded Sep 19, 202651-20046 contacts →

Exact match

“PROFESSIONAL SUPPORT SERVICES We work for you as a preferred provider.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchBirmingham, MI, United StatesHQ recorded Sep 19, 202611-5045 contacts →

Exact match

“Fenner, Melstrom & Dooling has built a solid reputation for delivering professional services timely and accurately.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Sep 19, 20261,001-5,00045 contacts →

Exact match

“Effective September 16, 2022, Lurie, LLP is now EisnerAmper, and part of one of the largest business consulting firms in the world.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 2,270 business services companies based in the United States

See the full list, filter by size, metro and specialty, and access 3,488 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Business services companies based in the United States at a glance

As of Sep 19, 2026
20.3%Verified-email coverage
7.6Average contacts per company
1-10Median size (employees)
3.2%Largest-city concentration · New York
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
1,794
11-50
372
51-200
71
201-500
14
501-1,000
6
1,001-5,000
7
5,001-10,000
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,270 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “business services companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 3,488 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “business services companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many business services companies are there based in the United States?

RevenueBase identified 2,270 company matches for business services companies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Brown Edwards tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most business services companies?

New York leads with 73 company records, followed by Houston (47) and Atlanta (44).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,488 professional contacts with verified work emails tracked across these 2,270 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.