Company lists · Data refreshed September 2026

Top 25 Legal compliance outsourcing companies based in the United States

Name: Legal compliance outsourcing 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 4, 2026 522 companies tracked

RevenueBase identified 522 legal compliance outsourcing companies headquartered in the United States as of September 2026 and tracks 8,037 professional contacts across them, including 2,873 with verified work emails and 3,226 with mobile numbers. New York is the largest hub.

This list covers legal compliance outsourcing 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

522Companies

8,037Contacts tracked

2,873Verified emails

3,226Mobile numbers

Unlock all 522 companies Free signup · no credit card · 500 free credits

The 25 largest legal compliance outsourcing companies based in the United States

Ranked by team size

Top 25 of 522 legal compliance outsourcing companies based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names legal compliance outsourcing companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Donnelley Financial Solutions DfinPartial evidence	Lancaster, PA, United StatesHQ checked Sep 4, 2026	1,001-5,000	1,763
	“DFIN is the leading global provider of compliance and regulatory software and services, fueling end-to-end investment company regulatory compliance needs, complex capital markets…” Source: company website · checked Sep 4, 2026
2	CT CorporationStrong evidence	New York, NY, United StatesHQ checked Sep 4, 2026	1,001-5,000	788
	“CT Corporation helps small businesses, corporations, and law firms around the world manage their most critical business and legal compliance responsibilities.” Source: company website · checked Sep 4, 2026
3	GSA NationalPartial evidence	Fairfax, VA, United StatesHQ checked Sep 4, 2026	201-500	558
	“GSA National has been helping government contractors ensure compliance and streamline costs since 1991.” Source: company website · checked Sep 4, 2026
4	DTI LLCStrong evidence	Atlanta, GA, United StatesHQ checked Sep 4, 2026	1,001-5,000	543
	“Founded in 1998, DTI is an industry leading legal process outsourcing (LPO) company serving law firms and corporations around the world.” Source: company website · checked Sep 4, 2026
5	ComplyPartial evidence	New York City, NY, United StatesHQ checked Sep 4, 2026	201-500	299
	“At Comply, we pride ourselves on being the champion for compliance professionals.” Source: company website · checked Sep 4, 2026
6	Complyright, INCIndirect evidence	Pompano Beach, CA, United StatesHQ checked Sep 4, 2026	201-500	191
	“At ComplyRight®, our mission is to empower employers by simplifying the complex world of employment law.” Source: company website · checked Sep 4, 2026
7	Neosystems LLCIndirect evidence	Reston, VA, United StatesHQ checked Sep 4, 2026	51-200	178
	“On May 1, 2026, NeoSystems Enterprise Solutions Group (ESG) was acquired by BlueStreet Solutions Inc.” Source: company website · checked Sep 4, 2026
8	Harbor CompliancePartial evidence	Lancaster, PA, United StatesHQ checked Sep 4, 2026	201-500	149
	“We provide innovative compliance solutions by embracing complexity and making it simple.” Source: company website · checked Sep 4, 2026
9	Legal Outsourcing 2.0Strong evidence	New York, NY, United StatesHQ checked Sep 4, 2026	51-200	140
	“Legal Outsourcing 2.0, as the name suggests, is the next generation of Legal Process Outsourcing.” Source: company website · checked Sep 4, 2026
10	Trendsource, INCPartial evidence	San Diego, CA, United StatesHQ checked Sep 4, 2026	11-50	140
	“TrendSource helps businesses document and measure compliance across employment, consumer reporting, government, finance, health care, and retail.” Source: company website · checked Sep 4, 2026
11	Allsec Technologies LimitedPartial evidence	Irving, TX, United StatesHQ checked Sep 4, 2026	1,001-5,000	104
	“Allsec Technologies is a global outsourcing solutions provider, serving over 600 companies in 42+ countries.” Source: company website · checked Sep 4, 2026
12	Govdocs, INCPartial evidence	Eagan, MN, United StatesHQ checked Sep 4, 2026	51-200	68
	“GovDocs is a leading provider of employment law compliance solutions, empowering HR professionals to navigate complex, location-specific labor law postings, minimum wage…” Source: company website · checked Sep 4, 2026
13	Glocal LPOIndirect evidence	Wilmington, DE, United StatesHQ checked Sep 4, 2026	201-500	61
	“Welcome to Glocal LPO – Where U.S.” Source: company website · checked Sep 4, 2026
14	Quest CEPartial evidence	Milwaukee, WI, United StatesHQ checked Sep 4, 2026	51-200	60
	“Quest CE helps financial service organizations manage their compliance operations by offering firm training programs, disclosure tracking services and branch audit solutions.” Source: company website · checked Sep 4, 2026
15	Compliance Risk Concepts CRCIndirect evidence	New York, NY, United StatesHQ checked Sep 4, 2026	11-50	60
	“To meet rigorous regulatory expectations and requirements, it is imperative that organizations have access to “best in class” talent that has extensive knowledge of the businesses…” Source: company website · checked Sep 4, 2026
16	MMC HRPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 4, 2026	51-200	52
	“MMC HR is the pioneer and a leading provider of Human Resources Outsourcing and Consulting services, offering support in all key aspects of H.R.” Source: company website · checked Sep 4, 2026
17	Qtat BPO Solutions INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	201-500	47
	“Incorporated in 2006, QTAT BPO Solutions is a Houston Based Information Technology Enabled Services ( ITES ) and Internet Marketing Company with global delivery centers.” Source: company website · checked Sep 4, 2026
18	Vigilant CompliancePartial evidence	Chadds Ford, PA, United StatesHQ checked Sep 4, 2026	11-50	44
	“Vigilant is an Award Winning and Industry Leading Compliance Firm that continues to remain Independent and Privately Owned.” Source: company website · checked Sep 4, 2026
19	HAASTPartial evidence	New York, United StatesHQ checked Sep 4, 2026	11-50	44
	“We help enterprise businesses manage compliance risk, enabling them to find and resolve regulatory compliance issues, across their entire digital and marketing presence.” Source: company website · checked Sep 4, 2026
20	Accel CompliancePartial evidence	West Hartford, CT, United StatesHQ checked Sep 4, 2026	11-50	36
	“Simplifying agency compliance.” Source: company website · checked Sep 4, 2026
21	Orical LLCPartial evidence	New York, NY, United StatesHQ checked Sep 4, 2026	11-50	35
	“Compliance Solutions With Best in Class Operational Support Orical LLC offers the best-in-class, customized, practical and technical solutions for the compliance, operations and…” Source: company website · checked Sep 4, 2026
22	Costaff Services, LLCIndirect evidence	Royal Oak, MI, United StatesHQ checked Sep 4, 2026	11-50	34
	“At CoStaff, we understand that you are in business to grow your business.” Source: company website · checked Sep 4, 2026
23	HR Service, INCIndirect evidence	Draper, UT, United StatesHQ checked Sep 4, 2026	11-50	32
	“HR made simple.” Source: company website · checked Sep 4, 2026
24	CDMSPartial evidence	Pleasanton, CA, United StatesHQ checked Sep 4, 2026	11-50	31
	“Founded in 1988, CDMS provides a full range of EPA and Cal-OSHA regulatory compliance services.” Source: company website · checked Sep 4, 2026
25	Potomac River PartnersIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	27
	“Potomac River Partners is a specialized management consulting firm offering a variety of services to meet our clients’ challenges.” Source: company website · checked Sep 4, 2026

Showing 25 of 522 legal compliance outsourcing companies based in the United States

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Legal compliance outsourcing companies based in the United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

New YorkLargest hub · 33 HQs

3,226Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

330

11-50

138

51-200

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

31–60

233

61–90

1,535

90–180

1,078

180+

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 legal compliance outsourcing companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “legal compliance outsourcing companies”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among legal compliance outsourcing 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 an evidence 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, 2,873 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 4, 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.

Legal compliance outsourcing companies by metro

Legal compliance outsourcing companies in New York33

Frequently asked

How many legal compliance outsourcing companies are there based in the United States?

RevenueBase identified 522 legal compliance outsourcing 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?

Donnelley Financial Solutions Dfin, headquartered in Lancaster, tops this list with the largest team on record.

Which city has the most legal compliance outsourcing companies?

New York leads with 33 headquartered companies, followed by Washington (13) and Houston (11).

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 2,873 verified decision-maker contacts tracked across these 522 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 4, 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.