Company lists · Data refreshed September 2026

Top 25 Professional services firms based in the United States

Name: Professional services firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 22,273 companies tracked

RevenueBase identified 22,273 professional services firms headquartered in the United States as of September 2026 and tracks 353,999 professional contacts across them, including 165,819 with verified work emails and 149,603 with mobile numbers. New York is the largest hub.

This list covers professional services firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

22,273Companies

353,999Contacts tracked

165,819Verified emails

149,603Mobile numbers

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The 25 largest professional services firms based in the United States

Ranked by team size

Top 25 of 22,273 professional services firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to professional services firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Bennett Thrasher	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	201-500	558 contacts →
	Indirect evidence “Bennett Thrasher provides proven guidance for financial confidence through premier tax, audit, advisory, and outsourcing solutions.” Source: RevenueBase Database · checked Sep 5, 2026
2	Scrubbed	Indirect evidence	Burlingame, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	490 contacts →
	Indirect evidence “Scrubbed delivers partner-led accounting, tax, advisory, and audit services to middle-market companies that want a financial partner they can trust.” Source: RevenueBase Database · checked Sep 5, 2026
3	LUTZ	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 5, 2026	201-500	435 contacts →
	Indirect evidence “Founded in 1980 as a tech-forward accounting practice, Lutz has grown into Nebraska’s largest locally owned business solutions firm.” Source: RevenueBase Database · checked Sep 5, 2026
4	BRC	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 5, 2026	201-500	296 contacts →
	Indirect evidence “BRC has been serving clients and their businesses throughout the Southeast for more than 75 years.” Source: RevenueBase Database · checked Sep 5, 2026
5	ATA	Indirect evidence	Jackson, TN, United StatesHQ checked Sep 5, 2026	201-500	224 contacts →
	Indirect evidence “ATA is one of the largest accounting and consulting firms in the Mid-South and was named the ninth (9th) largest accounting firm in the State of Tennessee by American Business…” Source: RevenueBase Database · checked Sep 5, 2026
6	Lga, LLP	Indirect evidence	Woburn, MA, United StatesHQ checked Sep 5, 2026	51-200	207 contacts →
	Indirect evidence “LGA, LLP is an independent, full-service CPA and Business Advisory firm with over 45 years of experience in delivering financial focus to businesses.” Source: RevenueBase Database · checked Sep 5, 2026
7	Tickmarks, INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 5, 2026	201-500	207 contacts →
	Indirect evidence “Tickmarks Inc.” Source: RevenueBase Database · checked Sep 5, 2026
8	MBE Cpas	Indirect evidence	Baraboo, WI, United StatesHQ checked Sep 5, 2026	51-200	201 contacts →
	Indirect evidence “We are driven by more than a quality tax return, we provide effective solutions to help you, your family, and your business succeed.” Source: RevenueBase Database · checked Sep 5, 2026
9	Hawkins ASH Cpas	Indirect evidence	La Crosse, WI, United StatesHQ checked Sep 5, 2026	51-200	193 contacts →
	Indirect evidence “Hawkins Ash CPAs, an Inside Public Accounting Top 200 firm, provides certified public accounting services to privately held businesses, governmental organizations, nonprofit…” Source: RevenueBase Database · checked Sep 5, 2026
10	Hutchinson And Bloodgood LLP	Indirect evidence	Glendale, CA, United StatesHQ checked Sep 5, 2026	51-200	187 contacts →
	Indirect evidence “Hutchinson and Bloodgood LLP is a leading firm of Certified Public Accountants and Consultants providing Tax Planning, Auditing, Technology Consulting, Human Resources and…” Source: RevenueBase Database · checked Sep 5, 2026
11	Symphona	Indirect evidence	Savannah, GA, United StatesHQ checked Sep 5, 2026	51-200	173 contacts →
	Indirect evidence “When every component of your business is working together in concert, those connections can create powerful and positive change.” Source: RevenueBase Database · checked Sep 5, 2026
12	THF Thomas Howell Ferguson	Indirect evidence	Tallahassee, FL, United StatesHQ checked Sep 5, 2026	51-200	163 contacts →
	Indirect evidence “Thomas Howell Ferguson P.A.” Source: RevenueBase Database · checked Sep 5, 2026
13	Duffy Kruspodin, LLP	Indirect evidence	Woodland Hills, CA, United StatesHQ checked Sep 5, 2026	201-500	156 contacts →
	Indirect evidence “Duffy Kruspodin, LLP is a Southern California CPA and advisory firm built on long-standing relationships, dependable guidance, and deep financial and business expertise.” Source: RevenueBase Database · checked Sep 5, 2026
14	Andrews Hooper Pavlik PLC	Indirect evidence	Saginaw, MI, United StatesHQ checked Sep 5, 2026	51-200	153 contacts →
	Indirect evidence “Andrews Hooper Pavlik PLC (AHP) was founded in 1993 by three partners of Ernst & Young.” Source: RevenueBase Database · checked Sep 5, 2026
15	Ketel Thorstenson, LLP	Indirect evidence	Rapid City, SD, United StatesHQ checked Sep 5, 2026	51-200	141 contacts →
	Indirect evidence “Ketel Thorstenson, LLP, is a full-service accounting firm rich in history, serving clients since 1936.” Source: RevenueBase Database · checked Sep 5, 2026
16	Premier Consulting & Integration	Indirect evidence	Red Bank, NJ, United StatesHQ checked Sep 5, 2026	51-200	109 contacts →
	Indirect evidence “We Make Your Business Operations Comfortable.” Source: RevenueBase Database · checked Sep 5, 2026
17	D'arcangelo & Co., LLP	Indirect evidence	Utica, NY, United StatesHQ checked Sep 5, 2026	51-200	103 contacts →
	Indirect evidence “Bringing our clients over 70 years of dedicated experience and service, D'Arcangelo & Co, LLP offers our clients a distinct difference through unsurpassed accounting, auditing…” Source: RevenueBase Database · checked Sep 5, 2026
18	Kranz Consulting	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	201-500	99 contacts →
	Indirect evidence “For 30 years, Kranz Consulting has advised and supported entrepreneurs and founders through the complexities of building high-growth businesses, and over 2,500 companies stand as…” Source: RevenueBase Database · checked Sep 5, 2026
19	Engaging Solutions, LLC	Indirect evidence	Indianapolis, United StatesHQ checked Sep 5, 2026	51-200	99 contacts →
	Indirect evidence “Engaging Solutions is a multi-faceted management consulting firm with the personnel and resources to accomplish everything from high level management and auditing to ground-level…” Source: RevenueBase Database · checked Sep 5, 2026
20	Wegmann Dazet	Indirect evidence	Metairie, LA, United StatesHQ checked Sep 5, 2026	51-200	96 contacts →
	Indirect evidence “Known as the Entrepreneur’s CPA, Wegmann Dazet is one of the largest locally owned CPA/Business Advisory firms based in the Gulf South.” Source: RevenueBase Database · checked Sep 5, 2026
21	Matthews, Carter & Boyce, P.C	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 5, 2026	51-200	95 contacts →
	Indirect evidence “MCB is a full-service accounting firm celebrating nearly 80 very independent years of business in the Washington, DC metro area.” Source: RevenueBase Database · checked Sep 5, 2026
22	TFC Consulting, INC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	51-200	93 contacts →
	Indirect evidence “TFC Consulting, Inc is a licensed CPA and consulting firm in the Washington DC metro area.” Source: RevenueBase Database · checked Sep 5, 2026
23	Frankel	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 5, 2026	51-200	91 contacts →
	Indirect evidence “Since 1959, our business and individual clients have thrived on our expertise and vision.” Source: RevenueBase Database · checked Sep 5, 2026
24	Moore Beauston & Woodham LLC Cpas	Indirect evidence	North Charleston, SC, United StatesHQ checked Sep 5, 2026	51-200	90 contacts →
	Indirect evidence “At Moore Beauston Woodham, we provide a comprehensive set of services for companies and individuals seeking financial planning, problem-solving, audit services and tax preparation.” Source: RevenueBase Database · checked Sep 5, 2026
25	Acuity Accounting	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	51-200	89 contacts →
	Indirect evidence “Acuity is the modern-day accounting organization built specifically for startups and small businesses.” Source: RevenueBase Database · checked Sep 5, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: professional services firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names professional services firms.
Partial evidence: Its own public description names part of professional services firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name professional services firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 22,273 professional services firms based in the United States

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Professional services firms based in the United States at a glance

As of Sep 5, 2026

46.8%Verified-email coverage

42.3%Mobile-number coverage

15.9Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · New York

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

15,342

11-50

5,416

51-200

1,069

201-500

169

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

154,0570–30

10,19431–60

8161–90

4390–180

1,444180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among professional services firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “professional services firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names professional services firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among professional services firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 165,819 across the full list. 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 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Professional services firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names professional services firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many professional services firms are there based in the United States?

RevenueBase identified 22,273 professional services firms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Bennett Thrasher, headquartered in Atlanta, tops this list with the largest team on record.

Which city has the most professional services firms?

New York leads with 593 headquartered companies, followed by Houston (420) and Atlanta (304).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 165,819 verified decision-maker contacts tracked across these 22,273 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 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 Smart Search, 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.