Company lists · Data refreshed September 2026
Top 25 401k plan administrators based in the United States
RevenueBase identified 585 401k plan administrators headquartered in the United States as of September 2026 and tracks 10,374 professional contacts across them, including 4,828 with verified work emails. Houston is the largest hub.
This list covers 401k plan administrators 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 19, 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.
The 25 largest 401k plan administrators based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 812 contacts → | ||||
Partial evidence “Human Interest is founded on a simple idea: Affordable, zero-transaction fee 401(k) plans for small and medium businesses.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 453 contacts → | ||||
Partial evidence “USI Consulting Group (USICG), an industry leading, full-service retirement plan consulting and benefits administration firm, has been helping employers enable their workforce to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 428 contacts → | ||||
Indirect evidence “At Empower, we’ve always been guided by strong values with a focus on helping people achieve the financial freedom they deserve.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 342 contacts → | ||||
Indirect evidence “PCS Retirement is one of the nation's largest independent and conflict-free retirement solution providers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 299 contacts → | ||||
Indirect evidence “PAi provides 401(k) retirement savings solutions to small businesses nationwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 291 contacts → | ||||
Partial evidence “BPAS is a national provider of retirement plans, benefit plans, fund administration, and institutional trust services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 265 contacts → | ||||
Indirect evidence “Guideline is now part of Gusto.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 249 contacts → | ||||
Partial evidence “The Retirement Plan Company (TRPC) delivers comprehensive recordkeeping and administration services to retirement plan sponsors, investment advisors, and third-party…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 231 contacts → | ||||
Partial evidence “From 401(k) plan design and administration, compliance and actuarial consulting, to pension outsourcing, recordkeeping and 3(16) fiduciary services, Definiti helps organizations…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 213 contacts → | ||||
Partial evidence “Nova 401(k) Associates provides third party administration services for 401(k) plans and actuarial services for defined benefit and cash balance plans.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 208 contacts → | ||||
Partial evidence “Economic Group Pension Services (EGPS), a Blue Ridge Company, delivers retirement plan administration and consulting services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 199 contacts → | ||||
Indirect evidence “National Benefit Services, LLC is an outsourced employee benefits provider in the retirement and consumer driven healthcare markets.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 197 contacts → | ||||
Indirect evidence “For over 30 years, JULY has helped financial advisors, TPAs, and employers build stronger retirement futures.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 175 contacts → | ||||
Partial evidence “EPIC Retirement Plan Services provides banks, trust companies, investment advisors, and TPAs with the very best in retirement plan consulting and recordkeeping services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 142 contacts → | ||||
Partial evidence “As a national retirement services company, The Retirement Advantage (TRA) provides third party administration and fiduciary services to plan sponsors, financial advisors, wealth…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 123 contacts → | ||||
Partial evidence “Advisors want a retirement plan provider who gets their client's needs, takes care of the details and offers proactive support.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 116 contacts → | ||||
Indirect evidence “At Strategic Retirement Partners, our mission and philosophy is simple; Help drive positive retirement outcomes for all who participate by providing investment guidance to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 92 contacts → | ||||
Indirect evidence “The Loren D.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 91 contacts → | ||||
Partial evidence “Primark Benefits provides complete administration, compliance, and consulting services for all types of employee benefit plans.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 86 contacts → | ||||
Partial evidence “Headquartered in Denver, Colorado, LT Trust, A Division of American Trust is one of America’s most technologically focused and fastest growing small business retirement plan…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 79 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 76 contacts → | ||||
Partial evidence “Dunbar, Bender & Zapf, Inc.(DBZ) is a full-service retirement plan consulting firm dedicated to helping employers design, implement, and manage plans that support their long-term…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 71 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 68 contacts → | ||||
Partial evidence “DWC – The 401(k) Experts provides third‑party plan administration, compliance, and consulting services for qualified retirement plans nationwide.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 66 contacts → | ||||
Indirect evidence “NFP, a leading insurance broker and consultant, provides retirement consulting services that help companies and their employees reach their highest potential.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: 401k plan administrators. 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 401k plan administrators.
- Partial evidence
- Its own public description names part of 401k plan administrators, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name 401k plan administrators. 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 585 401k plan administrators based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,828 reachable decision-makers.
Free signup · no credit card
401k plan administrators based in the United States at a glance
As of Sep 19, 2026Companies by employee count
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 585 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 401k plan administrators, 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 “401k plan administrators”. 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 401k plan administrators), 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 401k plan administrators, 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, 4,828 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 19, 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.
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 401k plan administrators, 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 401k plan administrators are there based in the United States?
RevenueBase identified 585 401k plan administrators 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?
Human Interest, headquartered in San Francisco, tops this list with the largest team on record.
Which city has the most 401k plan administrators?
Houston leads with 11 headquartered companies, followed by San Diego (10) and Chicago (7).
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 4,828 verified decision-maker contacts tracked across these 585 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 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 585 401k plan administrators based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
Browse: Companies home · All United States lists · All 401k plan administrators lists · New lists
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States