Company lists · Data refreshed September 2026
Top 25 HR and payroll outsourcing companies based in the United States
RevenueBase identified 3,767 company matches for HR and payroll outsourcing companies associated with the United States as of September 2026 and tracks 175,397 professional contacts across them, including 63,613 with verified work emails. New York is the largest hub.
This list covers company matches for HR and payroll outsourcing companies 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 September 21, 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.
The 25 largest HR and payroll outsourcing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 84,166 contacts → | ||||
Exact match “Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 17,911 contacts → | ||||
Exact match “As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 4,761 contacts → | ||||
Exact match “Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 4,056 contacts → | ||||
Exact match “TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 3,543 contacts → | ||||
Exact match “Gusto has been growing the small business economy for 15+ years.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 2,437 contacts → | ||||
Exact match “VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 1,591 contacts → | ||||
Exact match “We started as a staffing company in 1972, and over the past 50 years, evolved into a Professional Employer Organization or PEO.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 1,554 contacts → | ||||
Exact match “Justworks takes the busyness out of growing a business and alleviates the unknown.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 1,376 contacts → | ||||
Exact match “Employee Based Systems (EBS) is a innovative HRMS software development, implementation training, support, and services company specializing in helping companies improve…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 1,182 contacts → | ||||
Exact match “Keka is a leading unified HR and payroll platform that helps organizations run people operations with consistency, compliance, and operational clarity.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 840 contacts → | ||||
Exact match “Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 828 contacts → | ||||
Exact match “Oasis, A Paychex Company, is a leading Professional Employer Organization (PEO).” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 816 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 701 contacts → | ||||
Exact match “Trusted by more than 1 million companies, Mineral is the HR and compliance leader for growing businesses.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 665 contacts → | ||||
Exact match “Asure (NASDAQ: ASUR) sees Human Capital Management (HCM) through the lens of entrepreneurs and executives with an owner’s mentality.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 16 | 655 contacts → | ||||
Exact match “Since AccountantsWorld By IRIS is a leader in providing HR and payroll software for accountants and CPA firms.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 17 | 586 contacts → | ||||
Exact match “CoAdvantage is now CoAd.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 18 | 580 contacts → | ||||
Exact match “Atlas HXM understands how people work.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 19 | 535 contacts → | ||||
Exact match “We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 20 | 525 contacts → | ||||
Exact match “In today's fast-paced business landscape, multi-unit companies demand more than just basic operations-they need expert guidance and cutting-edge technology to thrive.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 21 | 496 contacts → | ||||
Exact match “For over 35 years, MMC has been a trusted leader in Staffing and Payroll solutions, serving the private, public, and federal sectors with unparalleled excellence.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 22 | 436 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 · Sep 21, 2026 · View company records in RevenueBase | |||||
| 23 | 421 contacts → | ||||
Exact match “ProService Hawaii provides bundled HR solutions that make it easier for employers to succeed.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 24 | 383 contacts → | ||||
Exact match “FrankCrum offers outsourced HR, payroll and payroll administration, employee benefits and benefits administration, 401(k), workers compensation and HR Solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 25 | 381 contacts → | ||||
Exact match “Headway Workforce Solutions is a leading B2B (Business to Business) provider of HR Administration Outsourcing and Talent Solutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “HR and payroll outsourcing companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 3,767 HR and payroll outsourcing companies based in the United States
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HR and payroll outsourcing companies based in the United States at a glance
As of Sep 21, 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 3,767 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 “HR and payroll outsourcing companies” 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 63,613 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 September 21, 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.
HR and payroll outsourcing companies by metro
- HR and payroll outsourcing companies in New York82
- HR and payroll outsourcing companies in Houston65
- HR and payroll outsourcing companies in Atlanta62
- HR and payroll outsourcing companies in Los Angeles49
- HR and payroll outsourcing companies in Miami48
- HR and payroll outsourcing companies in Tampa43
- HR and payroll outsourcing companies in Denver41
- HR and payroll outsourcing companies in Chicago38
- HR and payroll outsourcing companies in Dallas36
- HR and payroll outsourcing companies in San Francisco36
- HR and payroll outsourcing companies in Austin35
- HR and payroll outsourcing companies in Phoenix34
- HR and payroll outsourcing companies in San Diego32
- HR and payroll outsourcing companies in Charlotte25
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 “HR and payroll outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many HR and payroll outsourcing companies are there based in the United States?
RevenueBase identified 3,767 company matches for HR and payroll outsourcing companies associated with the United States as of September 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?
ADP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most HR and payroll outsourcing companies?
New York leads with 82 company records, followed by Houston (65) and Atlanta (62).
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 63,613 professional contacts with verified work emails tracked across these 3,767 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 September 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,767 HR and payroll outsourcing companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
HR and payroll outsourcing companies by geography
- HR and payroll outsourcing companies based in Brisbane, Australia
- HR and payroll outsourcing companies based in Melbourne, Australia
- HR and payroll outsourcing companies based in Sydney, Australia
- HR and payroll outsourcing companies based in Rio De Janeiro, Brazil
- HR and payroll outsourcing companies based in Sao Paulo, Brazil
- HR and payroll outsourcing companies based in Calgary, Canada
- HR and payroll outsourcing companies based in Toronto, Canada
- HR and payroll outsourcing companies based in Ahmedabad, India
- HR and payroll outsourcing companies based in Bangalore, India
- HR and payroll outsourcing companies based in Chennai, India
- HR and payroll outsourcing companies based in Delhi, India
- HR and payroll outsourcing companies based in Gurgaon, India
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- HR and payroll outsourcing companies based in Brisbane, Australia
- HR and payroll outsourcing companies based in Melbourne, Australia
- HR and payroll outsourcing companies based in Sydney, Australia
- HR and payroll outsourcing companies based in Rio De Janeiro, Brazil
- HR and payroll outsourcing companies based in Sao Paulo, Brazil
- HR and payroll outsourcing companies based in Calgary, Canada
Company intelligence · public preview
Top 25 HR and payroll outsourcing companies based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,767 matching company records for HR and payroll outsourcing companies based in the United States, with 175,397 tracked contacts and 63,613 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 HR and payroll outsourcing companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  ADPadp.comHQ: Roseland, NJ, United StatesReported employees: 10001+ | Roseland, NJ, United States | 10001+ | Exact match | 84,166 contacts → |
“Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Paychexpaychex.comHQ: Rochester, NY, United StatesReported employees: 10001+ | Rochester, NY, United States | 10001+ | Exact match | 17,911 contacts → |
“As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Insperityinsperity.comHQ: Kingwood, TX, United StatesReported employees: 1,001-5,000 | Kingwood, TX, United States | 1,001-5,000 | Exact match | 4,761 contacts → |
“Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Trinettrinet.comHQ: Dublin, CA, United StatesReported employees: 1,001-5,000 | Dublin, CA, United States | 1,001-5,000 | Exact match | 4,056 contacts → |
“TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  GUSTOgusto.comHQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 3,543 contacts → |
“Gusto has been growing the small business economy for 15+ years.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Vensure Employer Solutionsvensure.comHQ: Chandler, AZ, United StatesReported employees: 1,001-5,000 | Chandler, AZ, United States | 1,001-5,000 | Exact match | 2,437 contacts → |
“VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  BBSIbbsi.comHQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 1,591 contacts → |
“We started as a staffing company in 1972, and over the past 50 years, evolved into a Professional Employer Organization or PEO.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Justworksjustworks.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 1,554 contacts → |
“Justworks takes the busyness out of growing a business and alleviates the unknown.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  SSSeecentral.comHQ: Littleton, CO, United StatesReported employees: Not recorded | Littleton, CO, United States | Not recorded | Exact match | 1,376 contacts → |
“Employee Based Systems (EBS) is a innovative HRMS software development, implementation training, support, and services company specializing in helping companies improve…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Keka HRkeka.comHQ: Seattle, WA, United StatesReported employees: 501-1,000 | Seattle, WA, United States | 501-1,000 | Exact match | 1,182 contacts → |
“Keka is a leading unified HR and payroll platform that helps organizations run people operations with consistency, compliance, and operational clarity.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  G&a Partnersgnapartners.comHQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 840 contacts → |
“Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  OASISoasisadvantage.comHQ: West Palm Beach, FL, United StatesReported employees: 501-1,000 | West Palm Beach, FL, United States | 501-1,000 | Exact match | 828 contacts → |
“Oasis, A Paychex Company, is a leading Professional Employer Organization (PEO).” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Onesource Virtualonesourcevirtual.comHQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 816 contacts → |
“OneSource Virtual (OSV) delivers patented in-tenant technology and expert services that efficiently automate the administrative, transactional tasks of Workday payroll, taxes…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Mineral, Part Of Mitratechtrustmineral.comHQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 701 contacts → |
“Trusted by more than 1 million companies, Mineral is the HR and compliance leader for growing businesses.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Asure Softwareasuresoftware.comHQ: Austin, TX, United StatesReported employees: 501-1,000 | Austin, TX, United States | 501-1,000 | Exact match | 665 contacts → |
“Asure (NASDAQ: ASUR) sees Human Capital Management (HCM) through the lens of entrepreneurs and executives with an owner’s mentality.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Accountantsworld By Irisaccountantsworld.comHQ: Hauppauge, NY, United StatesReported employees: Not recorded | Hauppauge, NY, United States | Not recorded | Exact match | 655 contacts → |
“Since AccountantsWorld By IRIS is a leader in providing HR and payroll software for accountants and CPA firms.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Coadvantagecoad.comHQ: Bradenton, FL, United StatesReported employees: 201-500 | Bradenton, FL, United States | 201-500 | Exact match | 586 contacts → |
“CoAdvantage is now CoAd.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Atlas HXMhubs.laHQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 580 contacts → |
“Atlas HXM understands how people work.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Group Management Services, INCgroupmgmt.comHQ: Richfield, OH, United StatesReported employees: 501-1,000 | Richfield, OH, United States | 501-1,000 | Exact match | 535 contacts → |
“We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Infosyncissvc.comHQ: Wichita, KS, United StatesReported employees: 501-1,000 | Wichita, KS, United States | 501-1,000 | Exact match | 525 contacts → |
“In today's fast-paced business landscape, multi-unit companies demand more than just basic operations-they need expert guidance and cutting-edge technology to thrive.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  MMC Group LPmmcgrp.comHQ: Irving, TX, United StatesReported employees: 51-200 | Irving, TX, United States | 51-200 | Exact match | 496 contacts → |
“For over 35 years, MMC has been a trusted leader in Staffing and Payroll solutions, serving the private, public, and federal sectors with unparalleled excellence.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Prismhrprismhr.comHQ: Chandler, AZ, United StatesReported employees: 201-500 | Chandler, AZ, United States | 201-500 | Exact match | 436 contacts → |
“PrismHR creates exceptional software and services, empowering human resource outsourcing service providers such as Professional Employer Organizations (PEOs) and HR outsourcers to…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Proservice Hawaiiproservice.comHQ: Honolulu, HI, United StatesReported employees: 201-500 | Honolulu, HI, United States | 201-500 | Exact match | 421 contacts → |
“ProService Hawaii provides bundled HR solutions that make it easier for employers to succeed.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Frankcrumfrankcrum.comHQ: Clearwater, FL, United StatesReported employees: 201-500 | Clearwater, FL, United States | 201-500 | Exact match | 383 contacts → |
“FrankCrum offers outsourced HR, payroll and payroll administration, employee benefits and benefits administration, 401(k), workers compensation and HR Solutions.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Headway Workforce Solutionsheadwaywfs.comHQ: Raleigh, NC, United StatesReported employees: Not recorded | Raleigh, NC, United States | Not recorded | Exact match | 381 contacts → |
“Headway Workforce Solutions is a leading B2B (Business to Business) provider of HR Administration Outsourcing and Talent Solutions.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,767 company matches
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HR and payroll outsourcing companies: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,760 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 3,767 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
HR and payroll outsourcing companies by metro
- HR and payroll outsourcing companies in New York82
- HR and payroll outsourcing companies in Houston65
- HR and payroll outsourcing companies in Atlanta62
- HR and payroll outsourcing companies in Los Angeles49
- HR and payroll outsourcing companies in Miami48
- HR and payroll outsourcing companies in Tampa43
- HR and payroll outsourcing companies in Denver41
- HR and payroll outsourcing companies in Chicago38
- HR and payroll outsourcing companies in Dallas36
- HR and payroll outsourcing companies in San Francisco36
- HR and payroll outsourcing companies in Austin35
- HR and payroll outsourcing companies in Phoenix34
- HR and payroll outsourcing companies in San Diego32
- HR and payroll outsourcing companies in Charlotte25
Questions about this company list
What does Exact match mean for HR and payroll outsourcing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many HR and payroll outsourcing companies did RevenueBase find based in the United States?
The saved snapshot records 3,767 matching company records, 175,397 tracked contacts and 63,613 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
HR and payroll outsourcing companies by geography
- HR and payroll outsourcing companies based in Brisbane, Australia
- HR and payroll outsourcing companies based in Melbourne, Australia
- HR and payroll outsourcing companies based in Sydney, Australia
- HR and payroll outsourcing companies based in Rio De Janeiro, Brazil
- HR and payroll outsourcing companies based in Sao Paulo, Brazil
- HR and payroll outsourcing companies based in Calgary, Canada
- HR and payroll outsourcing companies based in Toronto, Canada
- HR and payroll outsourcing companies based in Ahmedabad, India
- HR and payroll outsourcing companies based in Bangalore, India
- HR and payroll outsourcing companies based in Chennai, India
- HR and payroll outsourcing companies based in Delhi, India
- HR and payroll outsourcing companies based in Gurgaon, India
Cite this list
RevenueBase Data Team. Top 25 HR and payroll outsourcing companies based in the United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/hr-and-payroll-outsourcing-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- HR and payroll outsourcing companies based in Brisbane, Australia
- HR and payroll outsourcing companies based in Melbourne, Australia
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- HR and payroll outsourcing companies based in Rio De Janeiro, Brazil
- HR and payroll outsourcing companies based in Sao Paulo, Brazil
- HR and payroll outsourcing companies based in Calgary, Canada
Company intelligence · public preview
Top 25 HR and payroll outsourcing companies based in the United States
RevenueBase records 3,767 matching company records for HR and payroll outsourcing companies based in the United States, with 175,397 tracked contacts and 63,613 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 HR and payroll outsourcing companies based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | ADPadp.com HQ: Roseland, NJ, United StatesReported employees: 10001+ | Roseland, NJ, United States | 10001+ | Exact match | 84,166 contacts → |
“Designing better ways to work through cutting-edge products, premium services and exceptional experiences that enable people to reach their full potential.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Paychexpaychex.com HQ: Rochester, NY, United StatesReported employees: 10001+ | Rochester, NY, United States | 10001+ | Exact match | 17,911 contacts → |
“As the future of work continues to evolve, Paychex leads the way by making complex HR, payroll, and benefits brilliantly simple.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Insperityinsperity.com HQ: Kingwood, TX, United StatesReported employees: 1,001-5,000 | Kingwood, TX, United States | 1,001-5,000 | Exact match | 4,761 contacts → |
“Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Trinettrinet.com HQ: Dublin, CA, United StatesReported employees: 1,001-5,000 | Dublin, CA, United States | 1,001-5,000 | Exact match | 4,056 contacts → |
“TriNet (NYSE: TNET) provides small and medium-size businesses (SMBs) with full-service HR solutions tailored by industry.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | GUSTOgusto.com HQ: San Francisco, CA, United StatesReported employees: 1,001-5,000 | San Francisco, CA, United States | 1,001-5,000 | Exact match | 3,543 contacts → |
“Gusto has been growing the small business economy for 15+ years.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Vensure Employer Solutionsvensure.com HQ: Chandler, AZ, United StatesReported employees: 1,001-5,000 | Chandler, AZ, United States | 1,001-5,000 | Exact match | 2,437 contacts → |
“VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | BBSIbbsi.com HQ: Vancouver, WA, United StatesReported employees: 501-1,000 | Vancouver, WA, United States | 501-1,000 | Exact match | 1,591 contacts → |
“We started as a staffing company in 1972, and over the past 50 years, evolved into a Professional Employer Organization or PEO.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Justworksjustworks.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 1,554 contacts → |
“Justworks takes the busyness out of growing a business and alleviates the unknown.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | SSSeecentral.com HQ: Littleton, CO, United StatesReported employees: Not recorded | Littleton, CO, United States | Not recorded | Exact match | 1,376 contacts → |
“Employee Based Systems (EBS) is a innovative HRMS software development, implementation training, support, and services company specializing in helping companies improve…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Keka HRkeka.com HQ: Seattle, WA, United StatesReported employees: 501-1,000 | Seattle, WA, United States | 501-1,000 | Exact match | 1,182 contacts → |
“Keka is a leading unified HR and payroll platform that helps organizations run people operations with consistency, compliance, and operational clarity.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | G&a Partnersgnapartners.com HQ: Houston, TX, United StatesReported employees: 501-1,000 | Houston, TX, United States | 501-1,000 | Exact match | 840 contacts → |
“Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | OASISoasisadvantage.com HQ: West Palm Beach, FL, United StatesReported employees: 501-1,000 | West Palm Beach, FL, United States | 501-1,000 | Exact match | 828 contacts → |
“Oasis, A Paychex Company, is a leading Professional Employer Organization (PEO).” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Onesource Virtualonesourcevirtual.com HQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 816 contacts → |
“OneSource Virtual (OSV) delivers patented in-tenant technology and expert services that efficiently automate the administrative, transactional tasks of Workday payroll, taxes…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Mineral, Part Of Mitratechtrustmineral.com HQ: Portland, OR, United StatesReported employees: 201-500 | Portland, OR, United States | 201-500 | Exact match | 701 contacts → |
“Trusted by more than 1 million companies, Mineral is the HR and compliance leader for growing businesses.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Asure Softwareasuresoftware.com HQ: Austin, TX, United StatesReported employees: 501-1,000 | Austin, TX, United States | 501-1,000 | Exact match | 665 contacts → |
“Asure (NASDAQ: ASUR) sees Human Capital Management (HCM) through the lens of entrepreneurs and executives with an owner’s mentality.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Accountantsworld By Irisaccountantsworld.com HQ: Hauppauge, NY, United StatesReported employees: Not recorded | Hauppauge, NY, United States | Not recorded | Exact match | 655 contacts → |
“Since AccountantsWorld By IRIS is a leader in providing HR and payroll software for accountants and CPA firms.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Coadvantagecoad.com HQ: Bradenton, FL, United StatesReported employees: 201-500 | Bradenton, FL, United States | 201-500 | Exact match | 586 contacts → |
“CoAdvantage is now CoAd.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Atlas HXMhubs.la HQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 580 contacts → |
“Atlas HXM understands how people work.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Group Management Services, INCgroupmgmt.com HQ: Richfield, OH, United StatesReported employees: 501-1,000 | Richfield, OH, United States | 501-1,000 | Exact match | 535 contacts → |
“We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Infosyncissvc.com HQ: Wichita, KS, United StatesReported employees: 501-1,000 | Wichita, KS, United States | 501-1,000 | Exact match | 525 contacts → |
“In today's fast-paced business landscape, multi-unit companies demand more than just basic operations-they need expert guidance and cutting-edge technology to thrive.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | MMC Group LPmmcgrp.com HQ: Irving, TX, United StatesReported employees: 51-200 | Irving, TX, United States | 51-200 | Exact match | 496 contacts → |
“For over 35 years, MMC has been a trusted leader in Staffing and Payroll solutions, serving the private, public, and federal sectors with unparalleled excellence.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Prismhrprismhr.com HQ: Chandler, AZ, United StatesReported employees: 201-500 | Chandler, AZ, United States | 201-500 | Exact match | 436 contacts → |
“PrismHR creates exceptional software and services, empowering human resource outsourcing service providers such as Professional Employer Organizations (PEOs) and HR outsourcers to…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Proservice Hawaiiproservice.com HQ: Honolulu, HI, United StatesReported employees: 201-500 | Honolulu, HI, United States | 201-500 | Exact match | 421 contacts → |
“ProService Hawaii provides bundled HR solutions that make it easier for employers to succeed.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Frankcrumfrankcrum.com HQ: Clearwater, FL, United StatesReported employees: 201-500 | Clearwater, FL, United States | 201-500 | Exact match | 383 contacts → |
“FrankCrum offers outsourced HR, payroll and payroll administration, employee benefits and benefits administration, 401(k), workers compensation and HR Solutions.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Headway Workforce Solutionsheadwaywfs.com HQ: Raleigh, NC, United StatesReported employees: Not recorded | Raleigh, NC, United States | Not recorded | Exact match | 381 contacts → |
“Headway Workforce Solutions is a leading B2B (Business to Business) provider of HR Administration Outsourcing and Talent Solutions.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,767 company matches
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HR and payroll outsourcing companies: dataset insights
September 21, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,760 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 3,767 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 21, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
HR and payroll outsourcing companies by metro
- HR and payroll outsourcing companies in New York82
- HR and payroll outsourcing companies in Houston65
- HR and payroll outsourcing companies in Atlanta62
- HR and payroll outsourcing companies in Los Angeles49
- HR and payroll outsourcing companies in Miami48
- HR and payroll outsourcing companies in Tampa43
- HR and payroll outsourcing companies in Denver41
- HR and payroll outsourcing companies in Chicago38
- HR and payroll outsourcing companies in Dallas36
- HR and payroll outsourcing companies in San Francisco36
- HR and payroll outsourcing companies in Austin35
- HR and payroll outsourcing companies in Phoenix34
- HR and payroll outsourcing companies in San Diego32
- HR and payroll outsourcing companies in Charlotte25
Questions about this company list
What does Exact match mean for HR and payroll outsourcing companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many HR and payroll outsourcing companies did RevenueBase find based in the United States?
The saved snapshot records 3,767 matching company records, 175,397 tracked contacts and 63,613 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 21, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
HR and payroll outsourcing companies by geography
- HR and payroll outsourcing companies based in Brisbane, Australia
- HR and payroll outsourcing companies based in Melbourne, Australia
- HR and payroll outsourcing companies based in Sydney, Australia
- HR and payroll outsourcing companies based in Rio De Janeiro, Brazil
- HR and payroll outsourcing companies based in Sao Paulo, Brazil
- HR and payroll outsourcing companies based in Calgary, Canada
- HR and payroll outsourcing companies based in Toronto, Canada
- HR and payroll outsourcing companies based in Ahmedabad, India
- HR and payroll outsourcing companies based in Bangalore, India
- HR and payroll outsourcing companies based in Chennai, India
- HR and payroll outsourcing companies based in Delhi, India
- HR and payroll outsourcing companies based in Gurgaon, India
Cite this list
RevenueBase Data Team. Top 25 HR and payroll outsourcing companies based in the United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/hr-and-payroll-outsourcing-companies/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- HR and payroll outsourcing companies based in Brisbane, Australia
- HR and payroll outsourcing companies based in Melbourne, Australia
- HR and payroll outsourcing companies based in Sydney, Australia
- HR and payroll outsourcing companies based in Rio De Janeiro, Brazil
- HR and payroll outsourcing companies based in Sao Paulo, Brazil
- HR and payroll outsourcing companies based in Calgary, Canada