Company lists · Data refreshed September 2026

Top 25 IT services accounting companies based in the United States

Name: IT services accounting companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 4,438 companies tracked

RevenueBase identified 4,438 IT services accounting companies headquartered in the United States as of September 2026 and tracks 54,993 professional contacts across them, including 17,679 with verified work emails. New York is the largest hub.

This list covers IT services accounting companies 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 28, 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 28, 2026 86% judged on-target in blind review

4,438Companies

54,993Contacts tracked

17,679Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest IT services accounting companies based in the United States

Ranked by team size

Top 25 of 4,438 IT services accounting companies based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to IT services accounting companies: 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	Withum	Partial evidence	Princeton, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,326 contacts →
	Partial evidence “Withum is a forward-thinking, technology-driven advisory and accounting firm, helping clients to Be in a Position of Strength in today’s modern business landscape.” Source: RevenueBase Database · checked Sep 28, 2026
2	Carr, Riggs & Ingram	Partial evidence	Enterprise, AL, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,102 contacts →
	Partial evidence “Carr, Riggs & Ingram (CRI) is a Top 25 nationally-ranked accounting and advisory firm driven by relationships to cultivate growth.” Source: RevenueBase Database · checked Sep 28, 2026
3	The MIL Corporation	Indirect evidence	Bowie, MD, United StatesHQ checked Sep 28, 2026	501-1,000	941 contacts →
	Indirect evidence “Established in 1980, MIL provides innovative cyber, engineering, financial, and information technology services to the federal government.” Source: RevenueBase Database · checked Sep 28, 2026
4	Systems Engineering Services Corporation Sesc	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	201-500	747 contacts →
	Indirect evidence “Systems Engineering Services Corporation (SESC), founded in 1989, is a leading provider of technology solutions to Fortune companies and government organizations.” Source: RevenueBase Database · checked Sep 28, 2026
5	NIC	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	n/a	581 contacts →
	Partial evidence “NIC has been providing IT Solutions, Cybersecurity, and Cloud Services for businesses and organizations for the past two decades.” Source: RevenueBase Database · checked Sep 28, 2026
6	Rightworks	Partial evidence	Nashua, NH, United StatesHQ checked Sep 28, 2026	501-1,000	577 contacts →
	Partial evidence “Obsessed with all things accounting, Rightworks is the preferred cloud service provider for businesses and accounting and tax firms.” Source: RevenueBase Database · checked Sep 28, 2026
7	Smart IMS INC	Partial evidence	Plainsboro, NJ, United StatesHQ checked Sep 28, 2026	1,001-5,000	544 contacts →
	Partial evidence “Headquartered in Plainsboro, NJ, Smart IMS delivers enterprise IT, cloud, cybersecurity, and digital transformation services to clients across life sciences, insurance, financial…” Source: RevenueBase Database · checked Sep 28, 2026
8	Newfire Global Partners	Partial evidence	Cambridge, MA, United StatesHQ checked Sep 28, 2026	501-1,000	434 contacts →
	Partial evidence “Newfire Global Partners is an American IT service company forging software for the most innovative companies in the world.” Source: RevenueBase Database · checked Sep 28, 2026
9	RFA	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	401 contacts →
	Indirect evidence “The first AI-native technology partner for finance.” Source: RevenueBase Database · checked Sep 28, 2026
10	IBN Technologies	Indirect evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	51-200	365 contacts →
	Indirect evidence “Welcome to IBN Technologies, LLC, Your Trusted Partner in Cybersecurity, Cloud, and Finance Solutions With 26+ years of expertise, IBN Technologies leads in delivering integrated…” Source: RevenueBase Database · checked Sep 28, 2026
11	Everest Technologies, INC	Indirect evidence	Columbus, OH, United StatesHQ checked Sep 28, 2026	501-1,000	330 contacts →
	Indirect evidence “Founded in 1997, Everest Technologies is a leading Information Technology solutions provider based in Columbus, Ohio.” Source: RevenueBase Database · checked Sep 28, 2026
12	GDC IT Solutions GDC	Partial evidence	Chambersburg, PA, United StatesHQ checked Sep 28, 2026	201-500	327 contacts →
	Partial evidence “GDC IT Solutions \| Premier IT Services & Technology Partner Global Data Consultants, LLC (dba GDC IT Solutions) is a veteran-owned, full-service IT provider supporting small…” Source: RevenueBase Database · checked Sep 28, 2026
13	Unison Globus	Partial evidence	Coral Springs, FL, United StatesHQ checked Sep 28, 2026	201-500	320 contacts →
	Partial evidence “Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.” Source: RevenueBase Database · checked Sep 28, 2026
14	Security Risk Advisors	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 28, 2026	201-500	315 contacts →
	Indirect evidence “We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Source: RevenueBase Database · checked Sep 28, 2026
15	Cook Solutions Group	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	201-500	308 contacts →
	Partial evidence “At Cook Solutions Group (CSG) we are all about service and fulfillment following one motto, “We Make it Happen!” Simple \| Secure \| Service \| Solutions.” Source: RevenueBase Database · checked Sep 28, 2026
16	Amsys Innovative Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	201-500	302 contacts →
	Partial evidence “AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: RevenueBase Database · checked Sep 28, 2026
17	Feditc	Partial evidence	Rockville, MD, United StatesHQ checked Sep 28, 2026	201-500	296 contacts →
	Partial evidence “Founded in 2003, FEDITC, LLC is an ISO and CMMI level 3 certified cyber security, IT, and engineering services firm.” Source: RevenueBase Database · checked Sep 28, 2026
18	Larsonallen	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 28, 2026	1,001-5,000	287 contacts →
	Indirect evidence “Effective January 2, 2012, LarsonAllen and Clifton Gunderson are now CliftonLarsonAllen.” Source: RevenueBase Database · checked Sep 28, 2026
19	Networking Technologies And Support, INC	Partial evidence	Midlothian, VA, United StatesHQ checked Sep 28, 2026	51-200	272 contacts →
	Partial evidence “Networking Technologies + Support (NTS) is a trusted IT solutions provider headquartered in Midlothian, Virginia.” Source: RevenueBase Database · checked Sep 28, 2026
20	Ecco Select	Partial evidence	North Kansas City, MO, United StatesHQ checked Sep 28, 2026	201-500	262 contacts →
	Partial evidence “ECCO Select is recognized as an innovative technology leader providing proven IT services, solutions and staffing to meet your long-term strategic goals and your most urgent…” Source: RevenueBase Database · checked Sep 28, 2026
21	Software Productivity Strategists, Inc. SPS	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 28, 2026	51-200	261 contacts →
	Indirect evidence “Software Productivity Strategists, Inc.(SPS) is an enterprise-class innovator and solutions creator with expertise across all phases of product design, development, deployment…” Source: RevenueBase Database · checked Sep 28, 2026
22	Kindercare Learing Center	Partial evidence	Portland, OR, United StatesHQ checked Sep 28, 2026	n/a	257 contacts →
	Partial evidence “Kindercare Learing Center is an Accounting company located in 650 NE Holladay St # 1400, Portland, Oregon, United States.” Source: RevenueBase Database · checked Sep 28, 2026
23	SK Enterprises	Partial evidence	Artesia, CA, United StatesHQ checked Sep 28, 2026	n/a	240 contacts →
	Partial evidence “We are a full-service Accounting firm.” Source: RevenueBase Database · checked Sep 28, 2026
24	Sawdey Solution Services	Indirect evidence	Beavercreek, OH, United StatesHQ checked Sep 28, 2026	201-500	234 contacts →
	Indirect evidence “For over 20 years, Sawdey Solutions Services has provided both Government and commercial clients with innovative cross-disciplined professional services that aim not only to…” Source: RevenueBase Database · checked Sep 28, 2026
25	EWS	Indirect evidence	Mount Arlington, NJ, United StatesHQ checked Sep 28, 2026	201-500	234 contacts →
	Indirect evidence “EWS empowers organizations through secure, scalable, and insight-driven digital solutions, purpose-built to accelerate growth, streamline operations, and solve mission-critical…” Source: RevenueBase Database · checked Sep 28, 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: IT services accounting companies. 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 IT services accounting companies.
Partial evidence: Its own public description names part of IT services accounting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT services accounting companies. 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 4,438 IT services accounting companies based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 17,679 reachable decision-makers.

Free signup · no credit card

View the full list →

IT services accounting companies based in the United States at a glance

As of Sep 28, 2026

32.1%Verified-email coverage

12.4Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,735

11-50

1,219

51-200

375

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 4,438 companies.

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 IT services accounting companies, 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 “IT services accounting companies”. 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 IT services accounting companies), 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 IT services accounting companies, 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, 17,679 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 28, 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.

IT services accounting companies 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 IT services accounting companies, 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 IT services accounting companies are there based in the United States?

RevenueBase identified 4,438 IT services accounting companies 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?

Withum, headquartered in Princeton, tops this list with the largest team on record.

Which city has the most IT services accounting companies?

New York leads with 143 headquartered companies, followed by Houston (69) and Austin (57).

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 17,679 verified decision-maker contacts tracked across these 4,438 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,438 IT services accounting companies based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

IT services accounting companies by geography

Browse the directory

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.