Company lists · Data refreshed November 2026

Top 25 Payroll processing outsourcing services based in the United States

RevenueBase identified 1,064 company matches for payroll processing outsourcing services associated with the United States as of November 2026 and tracks 18,663 professional contacts across them, including 8,356 with verified work emails. New York is the largest hub.

This list covers company matches for payroll processing outsourcing services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 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 RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
1,064Companies
18,663Contacts tracked
8,356Verified emails
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The 25 largest payroll processing outsourcing services based in the United States

Ranked by team size
Top 25 of 1,064 company matches for payroll processing outsourcing services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSan Francisco, CO, United StatesHQ recorded Nov 5, 20261,001-5,0004,083 contacts →

Exact match

“Gusto has been growing the small business economy with technology and heart for more than a decade.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchDallas, TX, United StatesHQ recorded Nov 5, 2026501-1,000860 contacts →

Exact match

“OneSource Virtual (OSV) delivers patented in-tenant technology and expert services that efficiently automate the administrative, transactional tasks of Workday payroll, taxes…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchRichfield, NC, United StatesHQ recorded Nov 5, 2026501-1,000611 contacts →

Exact match

“We provide comprehensive HR solutions to companies of all sizes throughout the United States.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchBradenton, FL, United StatesHQ recorded Nov 5, 2026201-500519 contacts →

Exact match

“CoAdvantage is now CoAd.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchChandler, FL, United StatesHQ recorded Nov 5, 2026201-500481 contacts →

Exact match

“PrismHR creates exceptional software and services, empowering human resource outsourcing service providers such as Professional Employer Organizations (PEOs) and HR outsourcers to…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchMonona, MI, United StatesHQ recorded Nov 5, 202651-200346 contacts →

Exact match

“BASIC's integrated HR solutions come full-circle for employers nationwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchCosta Mesa, CA, United StatesHQ recorded Nov 5, 2026501-1,000308 contacts →

Exact match

“Employers need a partner they can rely on to face today’s new challenges.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchThe Woodlands, TX, United StatesHQ recorded Nov 5, 202651-200289 contacts →

Exact match

“Outsourcing HR through a PEO is a strong option for growing businesses.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchRochester, NY, United StatesHQ recorded Nov 5, 2026201-500284 contacts →

Exact match

“From start-up to scale-up, SurePayroll online payroll, tax management, HR and benefits solutions give small business and household employers the freedom to succeed.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchSan Diego, CA, United StatesHQ recorded Nov 5, 202651-200227 contacts →

Exact match

“TEAM Risk Management Strategies is the nation’s leading provider of comprehensive, outsourced payroll and human resources services for fiduciaries and advisors whose clients have…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchRichmond, TN, United StatesHQ recorded Nov 5, 202651-200214 contacts →

Exact match

“Dominion Payroll is a leader in payroll and human resource solutions for clients nationwide.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchNashville, TN, United StatesHQ recorded Nov 5, 2026201-500198 contacts →

Exact match

“Inova Payroll is a leading employer services company, integrating payroll and human capital management (HCM) technology with personalized support and full-service HR outsourcing.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchMansfield, MA, United StatesHQ recorded Nov 5, 2026201-500175 contacts →

Exact match

“ConnectPay empowers small businesses across America through hassle-free payroll processing.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchLittleton, CO, United StatesHQ recorded Nov 5, 2026n/a159 contacts →

Exact match

“Payroll Vault has Re-Defined Payroll Payroll Vault is a nationally leading vendor that is re-defining the payroll industry with advanced cloud-based technologies, the highest…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchJacksonville, FL, United StatesHQ recorded Nov 5, 2026201-500153 contacts →

Exact match

“Greenshades delivers purpose-built workforce management solutions for organizations where workforce complexity is the norm, not the exception.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchNew York, NY, United StatesHQ recorded Nov 5, 202651-200140 contacts →

Exact match

“Check is a payroll-as-a-service API that lets you embed payroll directly in your vertical SaaS, HR, or time-tracking platform.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchBrooklyn, United StatesHQ recorded Nov 5, 202651-200140 contacts →

Exact match

“We source & screen worldwide talent, hire them on your behalf, consolidate payroll & compliance, and provide stellar onboarding support.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchBillings, MT, United StatesHQ recorded Nov 5, 2026201-500131 contacts →

Exact match

“Avitus Group is a worldwide company that simplifies, strengthens and grows businesses by providing administrative support (Payroll, accounting, taxes, HR and much more.) When a…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchPeachtree Corners, GA, United StatesHQ recorded Nov 5, 2026201-500130 contacts →

Exact match

“Payentry is a comprehensive payroll, human resources, and workforce management solution designed to help businesses simplify administration, strengthen compliance, and better…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchSan Diego, CA, United StatesHQ recorded Nov 5, 202651-200119 contacts →

Exact match

“HR starts with human.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchPeachtree Corners, IL, United StatesHQ recorded Nov 5, 202651-200118 contacts →

Exact match

“At Corporate Payroll Services, we relieve you of the burden of processing payroll.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchMelville, NY, United StatesHQ recorded Nov 5, 202611-5092 contacts →

Exact match

“Payroll and HR”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchLas Vegas, NV, United StatesHQ recorded Nov 5, 202651-20090 contacts →

Exact match

“AdvanStaff HR takes the headache out of HR so busy owners and lean HR teams can focus on running the business, not juggling paperwork.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchClifton Park, NY, United StatesHQ recorded Nov 5, 202651-20088 contacts →

Exact match

“GTM's success and client satisfaction are based on our industry-leading expertise and an extraordinary level of personal attention for each and every client.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchVirginia Beach, TX, United StatesHQ recorded Nov 5, 202651-20083 contacts →

Exact match

“Back in the early 2010s, Dave Fried and Danny Kline struck up a partnership.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 1,064 payroll processing outsourcing services based in the United States

See the full list, filter by size, metro and specialty, and access 8,356 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Payroll processing outsourcing services based in the United States at a glance

As of Nov 5, 2026
44.8%Verified-email coverage
17.5Average contacts per company
1-10Median size (employees)
2.3%Largest-city concentration · New York
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
578
11-50
339
51-200
95
201-500
22
501-1,000
10
1,001-5,000
9
5,001-10,000
2
10001+
3

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 1,064 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United States whose business descriptions match “payroll processing outsourcing services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 8,356 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “payroll processing outsourcing services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many payroll processing outsourcing services are there based in the United States?

RevenueBase identified 1,064 company matches for payroll processing outsourcing services associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

GUSTO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most payroll processing outsourcing services?

New York leads with 24 company records, followed by Houston (21) and Atlanta (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 8,356 professional contacts with verified work emails tracked across these 1,064 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 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 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.