Company lists · Data refreshed September 2026

Top 25 Government compliance consulting firms based in the United States

Name: Government compliance consulting 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 28, 2026 1,638 companies tracked

RevenueBase identified 1,638 government compliance consulting firms headquartered in the United States as of September 2026 and tracks 15,855 professional contacts across them, including 6,414 with verified work emails. New York is the largest hub.

This list covers government compliance consulting 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 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

1,638Companies

15,855Contacts tracked

6,414Verified emails

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The 25 largest government compliance consulting firms based in the United States

Ranked by team size

Top 25 of 1,638 government compliance consulting firms 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 government compliance consulting 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	Sikich	Strong evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,688 contacts →
	Strong evidence “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Source: RevenueBase Database · checked Sep 28, 2026
2	CT Corporation	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	788 contacts →
	Partial evidence “CT Corporation helps small businesses, corporations, and law firms around the world manage their most critical business and legal compliance responsibilities.” Source: RevenueBase Database · checked Sep 28, 2026
3	GSA National	Strong evidence	Fairfax, VA, United StatesHQ checked Sep 28, 2026	201-500	558 contacts →
	Strong evidence “GSA National has been helping government contractors ensure compliance and streamline costs since 1991.” Source: RevenueBase Database · checked Sep 28, 2026
4	Controlcase	Partial evidence	Fairfax, VA, United StatesHQ checked Sep 28, 2026	201-500	411 contacts →
	Partial evidence “ControlCase is committed to bringing peace of mind to the world’s IT compliance programs through our signature partnership approach, commitment to automation, and cost-effective…” Source: RevenueBase Database · checked Sep 28, 2026
5	IBM Promontory	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	403 contacts →
	Strong evidence “IBM Promontory is a global leader in strategy, risk management, and compliance consulting.#IBMConsulting” Source: RevenueBase Database · checked Sep 28, 2026
6	APA Engineering INC	Partial evidence	Mount Laurel, NJ, United StatesHQ checked Sep 28, 2026	201-500	364 contacts →
	Partial evidence “APA Engineering Inc has been a leader in providing Compliance, Engineering, IT, and Sourcing services since With over twenty years in business, we are dedicated to providing the…” Source: RevenueBase Database · checked Sep 28, 2026
7	Registrar Corp	Partial evidence	Hampton, VA, United StatesHQ checked Sep 28, 2026	51-200	317 contacts →
	Partial evidence “Registrar Corp is your trusted partner helping you navigate global regulatory requirements with expert services, innovative software solutions and comprehensive online compliance…” Source: RevenueBase Database · checked Sep 28, 2026
8	Comply	Partial evidence	New York City, NY, United StatesHQ checked Sep 28, 2026	201-500	308 contacts →
	Partial evidence “At Comply, we pride ourselves on being the champion for compliance professionals.” Source: RevenueBase Database · checked Sep 28, 2026
9	Complyright, INC	Indirect evidence	Pompano Beach, FL, United StatesHQ checked Sep 28, 2026	201-500	190 contacts →
	Indirect evidence “At ComplyRight®, our mission is to empower employers by simplifying the complex world of employment law.” Source: RevenueBase Database · checked Sep 28, 2026
10	Tradewin	Indirect evidence	Peabody, MA, United StatesHQ checked Sep 28, 2026	201-500	189 contacts →
	Indirect evidence “Tradewin, established in 1997, is a leading provider of import and export advice worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
11	Lachman Consultant Services	Partial evidence	Westbury, NY, United StatesHQ checked Sep 28, 2026	51-200	179 contacts →
	Partial evidence “Quality & Compliance \| Regulatory Strategy \| Inspection Readiness & Remediation \| Data Integrity.” Source: RevenueBase Database · checked Sep 28, 2026
12	Harbor Compliance	Partial evidence	Lancaster, PA, United StatesHQ checked Sep 28, 2026	201-500	150 contacts →
	Partial evidence “We provide innovative compliance solutions by embracing complexity and making it simple.” Source: RevenueBase Database · checked Sep 28, 2026
13	Optima Partners	Strong evidence	NY, United StatesHQ checked Sep 28, 2026	51-200	145 contacts →
	Strong evidence “Established in 2014, Optima is a leading global regulatory compliance and cybersecurity consulting firm advising financial institutions, including investment managers, hedge…” Source: RevenueBase Database · checked Sep 28, 2026
14	Mostardi Platt	Indirect evidence	Elmhurst, IL, United StatesHQ checked Sep 28, 2026	51-200	140 contacts →
	Indirect evidence “Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Source: RevenueBase Database · checked Sep 28, 2026
15	Sandler, Travis & Rosenberg, P.A	Partial evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	51-200	118 contacts →
	Partial evidence “Since 1977, Sandler, Travis & Rosenberg, P.A.(ST & R) has set the standard for providing comprehensive and effective international trade-related legal and consulting services to…” Source: RevenueBase Database · checked Sep 28, 2026
16	Rubino	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 28, 2026	51-200	104 contacts →
	Partial evidence “For over 45 years, Rubino & Company, Chartered has provided outstanding public accounting, tax advisory, regulatory consulting, and financial services to clients in the…” Source: RevenueBase Database · checked Sep 28, 2026
17	Chambers Group, INC	Partial evidence	Costa Mesa, CA, United StatesHQ checked Sep 28, 2026	51-200	98 contacts →
	Partial evidence “Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Source: RevenueBase Database · checked Sep 28, 2026
18	TFC Consulting, INC	Partial evidence	Rockville, MD, United StatesHQ checked Sep 28, 2026	51-200	93 contacts →
	Partial evidence “TFC Consulting, Inc is a licensed CPA and consulting firm in the Washington DC metro area.” Source: RevenueBase Database · checked Sep 28, 2026
19	HCJ Cpas & Advisors	Partial evidence	Little Rock, AR, United StatesHQ checked Sep 28, 2026	51-200	92 contacts →
	Partial evidence “HCJ CPAs and Advisors provides knowledgeable auditing, tax and business consulting services that companies need in today’s business climate.” Source: RevenueBase Database · checked Sep 28, 2026
20	CFS Compliance	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	90 contacts →
	Partial evidence “CFS Compliance is your one stop shop for all your compliance needs.” Source: RevenueBase Database · checked Sep 28, 2026
21	Focus Business Solutions, INC	Indirect evidence	Taylor, MI, United StatesHQ checked Sep 28, 2026	51-200	89 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
22	The RWC Group	Strong evidence	Fort Worth, TX, United StatesHQ checked Sep 28, 2026	51-200	82 contacts →
	Strong evidence “The RWC Group is a leading provider of top tier consulting, expert manpower and compliance services to the premier financial institutions, financial technology companies, and…” Source: RevenueBase Database · checked Sep 28, 2026
23	Occupational Services, INC	Strong evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	11-50	74 contacts →
	Strong evidence “Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Source: RevenueBase Database · checked Sep 28, 2026
24	Capital Edge Consulting	Strong evidence	Vienna, VA, United StatesHQ checked Sep 28, 2026	51-200	70 contacts →
	Strong evidence “Capital Edge is the largest consulting firm exclusively dedicated to government contractors and grant recipients.” Source: RevenueBase Database · checked Sep 28, 2026
25	Regulatory Compliance Associates RCA	Partial evidence	Pleasant Prairie, WI, United StatesHQ checked Sep 28, 2026	51-200	67 contacts →
	Partial evidence “Regulatory Compliance Associates Inc.(RCA) is a team of experienced professionals from FDA-regulated industries including pharmaceutical, biologics and medical device.” 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: government compliance consulting 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 government compliance consulting firms.
Partial evidence: Its own public description names part of government compliance consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name government compliance consulting 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 1,638 government compliance consulting firms based in the United States

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Government compliance consulting firms based in the United States at a glance

As of Sep 28, 2026

40.5%Verified-email coverage

9.7Average contacts per company

1-10Median size (employees)

4.1%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,145

11-50

391

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 1,638 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 government compliance consulting 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 “government compliance consulting 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 government compliance consulting 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 government compliance consulting 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, 6,414 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.

Government compliance consulting 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 government compliance consulting 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 government compliance consulting firms are there based in the United States?

RevenueBase identified 1,638 government compliance consulting 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?

Sikich, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most government compliance consulting firms?

New York leads with 67 headquartered companies, followed by Washington (46) and Houston (40).

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 6,414 verified decision-maker contacts tracked across these 1,638 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.

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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.