PEO Companies: The Full List
Every PEO (professional employer organization) in the PEOIQ directory, A to Z. Each entry shows the year the company was founded and whether it is IRS-certified, ESAC-accredited and a NAPEO member. We list PEOs; we don't rank them.
- PEO companies listed
- 211
- IRS-certified (CPEO)
- 38
- ESAC-accredited
- 38
- NAPEO members
- 185
How we checked: “IRS-certified” means at least one of the company’s legal entities is on the IRS list of certified PEOs (report dated August 7, 2026). “ESAC-accredited” means the company is listed in ESAC’s Find an Accredited PEO directory. Both were checked on October 14, 2026. NAPEO membership comes from each provider’s record. Check the IRS list yourself before you sign.
A
- Abel HR, Inc.
Family-owned New Jersey PEO with personalized service
Founded 1992 · IRS-certified · NAPEO member
- Acadia HR
Professional employer providing comprehensive HR and payroll solutions
Founded 1989 · NAPEO member
- AccessPoint
Experienced PEO with comprehensive nationwide coverage
Founded 2000 · NAPEO member
- Accurate Employer Solutions
Florida HR outsourcing with integrated technology solutions
Founded 2009 · NAPEO member
- Adams Keegan
Memphis-based PEO and payroll provider with offices in Atlanta, Dallas and Nashville
ESAC-accredited
- ADP TotalSource
Nation's largest PEO with comprehensive HR solutions.
Founded 1949 · IRS-certified · ESAC-accredited · NAPEO member
- Advanced PEO Solutions
Advanced PEO expertise for small business solutions
Founded 2011 · NAPEO member
- Affinity HR
Customized PEO solutions for HR optimization
Founded 2010 · NAPEO member
- Ahead Human Resources
HR outsourcing and staffing solutions provider
Founded 1995 · NAPEO member
- Alcott HR
Long Island-based PEO with nationwide service
Founded 1987 · IRS-certified · ESAC-accredited · NAPEO member
- Allevity HR & Payroll
Northern California HR and payroll solutions provider
Founded 1974 · NAPEO member
- Alliance Alpine
Utah PEO offering tailored HR and administrative solutions
Founded 1997 · NAPEO member
- Allied Workforce
Family-owned PEO serving businesses for 36 years
Founded 1989 · NAPEO member
- Allstaff Payroll
Family-owned Pensacola payroll service with personal approach
Founded 1993 · NAPEO member
- Aloha International Employment
Hawaii's leading employment agency and PEO
Founded 1981 · NAPEO member
- AlphaStaffHCM
Sunrise, Florida HR outsourcing and PEO provider, trading as AlphaStaff since 1997
Founded 1997 · ESAC-accredited
- American Admin
Boutique PEO for Pacific Northwest small business success
Founded 1995 · NAPEO member
- American One Source
Family-owned Texas PEO with nationwide service
Founded 2004 · IRS-certified · ESAC-accredited · NAPEO member
- American Payroll Service
Payroll and PEO services with personal touch
Founded 1999 · NAPEO member
- Ampian HR
Total administrative solution empowering human behind HR
Founded 2005 · NAPEO member
- Amplify HR Management
Northbrook, Illinois PEO offering payroll, HR and employee benefits
IRS-certified · ESAC-accredited
- Arkenstone Systems
Menlo Park PEO behind Arkenstone Defense, a back office for defense-tech and federal contractors
ESAC-accredited
- Armhr
PEO platform simplifying HR for fast-moving businesses.
Founded 1985 · IRS-certified · NAPEO member
- AscendHR
West Virginia PEO offering local HR solutions
Founded 2021 · NAPEO member
- Aspen HR
White-glove PEO for investment funds
Founded 2017 · IRS-certified
- Atlas Professional Services
Pioneer HR services with custom software solutions
Founded 2006 · NAPEO member
- Avalon HR
PEO serving businesses with 5-5000 employees nationwide
Founded 1997 · IRS-certified · ESAC-accredited · NAPEO member
- Axcet HR Solutions
Kansas City-based PEO with certified HR expertise
Founded 1988 · IRS-certified · NAPEO member
B
- Back Office Risk
Simplifying back office through PEO services
NAPEO member
- BBSI
Locally-supported PEO with dedicated business partner teams
Founded 1965 · ESAC-accredited · NAPEO member
- Bearing Tree
Administrative services for mission-driven organizations
Founded 2018 · NAPEO member
- Buoy PEO
PEO serving businesses and contractors with group benefits
Founded 2024 · NAPEO member
C
- CalmHR
PEO focused on law firms, physician practices and other professional offices
ESAC-accredited · NAPEO member
- Cardinal Services
Oregon's best kept secret in employment services
Founded 1984 · NAPEO member
- Central Staff Services
New York PEO with high retention rate
Founded 1993 · NAPEO member
- Certipay PEO Solutions
Web-based payroll and HR solution for multiple industries
Founded 1990 · NAPEO member
- Clear Employer Services
Personalized PEO partnerships
Founded 2015 · IRS-certified · ESAC-accredited · NAPEO member
- CoAdvantage
Comprehensive PEO with proprietary technology and HCM solutions
Founded 1997 · IRS-certified · NAPEO member
- Congruity HR
Tailored PEO solutions for small businesses
Founded 2011 · NAPEO member
- Consolidated Personnel Services
Experienced Phoenix PEO with superior service
Founded 1993 · NAPEO member
- CoStaff Services
Michigan PEO simplifying employment for modern workplaces
Founded 2000 · NAPEO member
- CSL Solutions
California PEO with personalized solutions
Founded 1993 · NAPEO member
- Current HR
PEO specializing in comprehensive HR outsourcing solutions
Founded 2021 · ESAC-accredited · NAPEO member
D
- DecisionHR
Customizable Florida PEO serving nationwide businesses
Founded 1996 · IRS-certified · NAPEO member
- Deel
Global workforce platform for international team management
Founded 2019 · NAPEO member
- Delta Administrative Services
Louisiana PEO specializing in Gulf Coast business solutions
Founded 2000 · NAPEO member
- Diamond PEO
Full-service PEO specializing in staffing company solutions
Founded 2017 · NAPEO member
E
- E3 HR
Multi-state PEO with high retention rate
Founded 2017 · NAPEO member
- Emplova
Melville, New York PEO founded by a team of PEO industry executives
ESAC-accredited
- Employ Source
Boutique PEO with custom back-office solutions
Founded 2009 · NAPEO member
- Employ-Ease
Relationship-based PEO for small business employee administration
Founded 2001 · NAPEO member
- Employee Management Services
PEO subsidiary of Recruit Holdings providing employment services
Founded 1994 · NAPEO member
- Employee Resource Administration
Dallas PEO with insurance and administrative expertise
Founded 1999 · NAPEO member
- Employer Flexible
Houston-based PEO providing flexible HR support solutions
Founded 2003 · NAPEO member
- Employers One Source Group
One source for comprehensive HR and payroll solutions
Founded 1998 · NAPEO member
- Employers Resource
HR, payroll, benefits, and safety services empowering entrepreneurs
Founded 1985 · NAPEO member
- Employers' Innovative Network
West Virginia PEO with client retention focus
Founded 2005 · NAPEO member
- Empower Services
Healthcare-specialized PEO with unified team solutions
- EmPowerHR
Milwaukee PEO serving businesses with human-focused approach
Founded 1995 · NAPEO member
- EMS Payroll
Entertainment industry payroll processing and accounting specialist
Founded 2006
- Engage PEO
Attorney‑driven PEO serving national white‑ and gray‑collar businesses
Founded 2011 · IRS-certified · ESAC-accredited · NAPEO member
- Enterprise HR
National PEO with technology-enhanced HR services
Founded 1996 · NAPEO member
- Equity Talent Solutions
All-in-one HR solutions for small business success
Founded 2024
- Erigo Employer Solutions
IRS certified PEO with cloud-based HR solutions
Founded 2011 · IRS-certified · NAPEO member
- ESC Business Solutions
Premier locally owned PEO with exceptional retention
Founded 1995 · NAPEO member
- ESG Personnel Leasing
California PEO offering complete one-stop HR solutions
Founded 2012 · NAPEO member
- ESI (eEmployers Solutions)
Multi-state PEO with advanced HCM technology solutions
Founded 1998 · ESAC-accredited · NAPEO member
- Ethan Allen HR Services
PEO serving Hudson Valley businesses locally
Founded 1992 · NAPEO member
- EverythingHR
Comprehensive HR with talent development and financial services
Founded 2012 · NAPEO member
- ExtensisHR
Boutique HR outsourcing with high client retention rates
Founded 1997 · IRS-certified · ESAC-accredited · NAPEO member
F
- FrankCrum
PEO services letting businesses focus on core operations
Founded 1981 · NAPEO member
- Full Life
PEO specializing in disability employment services
Founded 1999 · NAPEO member
- FullStack PEO
Fractional HR partner for emerging companies
Founded 2018 · NAPEO member
G
- G&A Partners
National PEO with attorney‑led HR services
Founded 1995 · IRS-certified · ESAC-accredited · NAPEO member
- Galactic
HR and payroll solutions with web platform
Founded 1988 · NAPEO member
H
- Harbor America Holdings
Award-winning PEO serving small-mid businesses coast-to-coast
Founded 1997 · NAPEO member
- Helpside
Intermountain West PEO for growing mid-sized companies
Founded 1990 · NAPEO member
- HexagonHR
Innovative PEO for growing companies nationwide
Founded 2022 · NAPEO member
- High Road PEO
All-in-one HR solution for growing businesses
Founded 2021 · NAPEO member
- Highpoint Resources
Texas PEO specializing in contractor services nationwide
NAPEO member
- HR & P Solutions
Tailored HR administration for business needs
Founded 2000 · NAPEO member
- HR Hawaii
Kailua-Kona PEO serving Hawaii businesses since 1998
Founded 1998 · IRS-certified · ESAC-accredited
- HR Partners
Full-service HR solutions across multiple industries
Founded 1998 · NAPEO member
- HR Plus
Technology-driven PEO
Founded 2008 · NAPEO member
- HR Solutions
Adaptable HR solutions for business efficiency
Founded 2010
- HR Strategies
Georgia PEO providing customized HR outsourcing solutions
Founded 1980
- HRDelivered
Unified PEO from merger of two companies
NAPEO member
- Human Capital
PEO offering comprehensive solutions for all business sizes
Founded 1997 · NAPEO member
- Human Capital Concepts
CPEO providing personalized HR services with heart-centered approach
Founded 2007 · NAPEO member
I
- Infiniti HR
Customizable national PEO serving small businesses and franchises
Founded 2008 · IRS-certified
- Infiniti Resource Management of South Florida
Tampa PEO providing multi-state HR and payroll services
Founded 2003 · NAPEO member
- Ingram & Co.
Arizona accounting firm providing PEO and HR services
Founded 1988 · NAPEO member
- Innerstaff
Texas PEO removing employee liabilities through co-employment
Founded 2010
- Innoworks Employment Services
Comprehensive PEO solutions simplifying HR nationwide
Founded 2019 · NAPEO member
- Insperity
Established HR outsourcing provider with nationwide presence
Founded 1986 · IRS-certified · ESAC-accredited · NAPEO member
- Insured Solutions
Alternative risk workers compensation and PEO services
Founded 2010 · NAPEO member
- InTANDEM Human Resources
Local Colorado CPEO offering Fortune 500-level benefits
Founded 2010 · IRS-certified · NAPEO member
- IronRoad
Cincinnati PEO with servant leadership and caring approach
Founded 1997 · NAPEO member
J
- J. Gregory PEO
National PEO with boutique service approach
Founded 2020
- Justworks, Inc.
Modern payroll and PEO platform with global reach
Founded 2012 · IRS-certified · ESAC-accredited · NAPEO member
K
L
- LandrumHR
50+ year PEO leader in HR solutions
Founded 1970 · IRS-certified · ESAC-accredited · NAPEO member
- LaunchPoint
Virginia PEO providing small businesses large company benefits
Founded 2017 · NAPEO member
- LBMC Employment Partners
IRS-certified Tennessee PEO with comprehensive solutions
Founded 1998 · IRS-certified · NAPEO member
- Legacy Employer Solutions
Texas PEO serving 14 states affordably
Founded 1998 · NAPEO member
- Lever1
Award-winning Kansas City PEO for small business growth
Founded 2011 · IRS-certified · NAPEO member
- Lightsource HR
Global EOR and PEO for U.S. hiring
Founded 1979 · NAPEO member
- LL Roberts Group
35+ year PEO broker specializing in club industry
Founded 1989 · NAPEO member
- Lone Star PEO
Texas PEO focused on personalized small business relationships
Founded 2016 · ESAC-accredited · NAPEO member
- Lyons HR
25+ year PEO with comprehensive solutions
Founded 1995
M
- ManagedPAY
Comprehensive HR and payroll solutions with compliance focus
Founded 1995 · NAPEO member
- Managepoint
Indianapolis PEO serving Midwest businesses
Founded 1994 · NAPEO member
- Marvel HR
East Tennessee PEO building winning workforces
Founded 2021 · NAPEO member
- Matrix OneSource
Jacksonville PEO focusing on customer service excellence
Founded 1999 · NAPEO member
- MedHQ
Healthcare administrative and advisory solutions
Founded 2003 · NAPEO member
- Mid Oregon Personnel
Central Oregon staffing and PEO services provider
Founded 1984 · NAPEO member
- My Construction Payroll
Construction-focused PEO for certified payroll and compliance
Founded 2000 · NAPEO member
- My HR Professionals
Arkansas-based HR provider with nationwide service
Founded 1995
N
- National PEO
Arizona-based PEO providing HR and payroll solutions nationwide
Founded 1999 · NAPEO member
- NEMR Total HR
Simply Human HR with 20+ years small business focus
Founded 1998 · NAPEO member
- Nextep
Simplified HR through cutting-edge technology and people-first approach
Founded 1997 · IRS-certified · ESAC-accredited · NAPEO member
- Niural
Modern HR & payroll solutions with AI-driven automation
Founded 2021 · NAPEO member
O
- OEM America
Connecticut PEO specializing in under-500 employee businesses
Founded 1995 · NAPEO member
- OMS PEO
Scalable payroll HR workers compensation solutions
Founded 1997 · NAPEO member
- OneSource Employee Management
Cincinnati PEO founded in 2004, part of Vensure, with a self-insured Ohio workers' comp program
Founded 2004 · NAPEO member
- OneSource PEO
Consolidated HR solution for small mid-sized businesses
Founded 1997 · NAPEO member
- Optimum Employer Solutions
Award-winning CPEO providing personalized HR and payroll solutions
Founded 2007 · IRS-certified · NAPEO member
P
- Pacific HR
California Central Coast PEO
Founded 1989 · NAPEO member
- PassioHR
Employee-focused PEO with integrated solutions
Founded 2008 · NAPEO member
- Paychex
Comprehensive HR and payroll platform for all businesses
Founded 1971 · IRS-certified · ESAC-accredited · NAPEO member
- Paycorp HR
PEO simplifying payroll, HR, and risk management
Founded 1990 · NAPEO member
- PayDay Benefits II
Utah-based national PEO with 90% client retention
Founded 2009 · NAPEO member
- PayMetrix HR
Personal payroll and HR management services
Founded 2011
- Payrolling Partners
PEO serving 22 states with comprehensive HR support
Founded 1988 · NAPEO member
- PEOPLE
National PEO with customizable HR solutions
NAPEO member
- People Lease
Mississippi PEO with satisfaction guarantee
Founded 1984 · NAPEO member
- People Management
The Employer's Champ PEO
Founded 1997 · NAPEO member
- PEOple Premier, Inc.
Healthcare-specialized PEO with extensive industry experience
Founded 2001 · NAPEO member
- PERMCO HR
Kentucky PEO with expert HR solutions
Founded 1998
- Pinnacle Employee Services
PEO created by entrepreneurs for entrepreneurs
Founded 2014 · NAPEO member
- PMG
Flexible PEO solutions
Founded 1989 · NAPEO member
- Preference Employment Solutions
Employee-owned staffing solutions in Fargo area
Founded 1987 · NAPEO member
- PRemployer
Faith-based PEO with personalized service approach
Founded 1999 · NAPEO member
- PrestigePEO
Leading national PEO with Fortune 500-level benefits
Founded 1998 · IRS-certified · ESAC-accredited · NAPEO member
- PRO Resources
Minnesota PEO providing creative HR solutions since 1991
Founded 1991 · NAPEO member
- Professional Employer Resources
Woman-owned Florida CPEO with 25 years experience
Founded 1997 · IRS-certified · NAPEO member
- Propel PEO
IRS-certified PEO with dedicated service teams
Founded 1996 · IRS-certified · NAPEO member
- ProService Hawaii
Honolulu-based PEO serving Hawaii employers since 1994
Founded 1994 · ESAC-accredited
- ProSourceSolutions
Texas PEO with 25 years diverse industry experience
Founded 2004 · NAPEO member
- Prosperity PEO
Personal service PEO for Florida businesses
Founded 2013 · NAPEO member
Q
- Quadrant PHR
Outsourced HR department for business efficiency
Founded 2012 · NAPEO member
- Quality Business Solutions
Comprehensive PEO services with customized solutions
Founded 2000 · NAPEO member
- Questco
Award-winning certified PEO with customized HR solutions
Founded 1989 · IRS-certified · NAPEO member
R
- RealTime PEO
PEO with payroll funding and comprehensive HR
Founded 1994 · NAPEO member
- Regis HR Group
PEO providing Fortune 500-level benefits access
Founded 2008 · ESAC-accredited · NAPEO member
- Resource Management
Family-run Hispanic-owned PEO with 27 years experience
Founded 1995 · NAPEO member
- Resourcing Edge
Top 25 PEO with advanced technology solutions
Founded 2003 · IRS-certified · ESAC-accredited · NAPEO member
- Rippling PEO
Unified workforce management platform with PEO services
Founded 2016 · NAPEO member
- RMPersonnel
Woman-owned staffing agency and PEO in Texas
Founded 1990 · NAPEO member
S
- SBS PayrollHR
California payroll provider with 22 years nationwide expertise
Founded 1997
- ScalePEO
Comprehensive PEO services for business growth
Founded 2017 · ESAC-accredited · NAPEO member
- Sequoia One PEO
Global people solutions platform for comprehensive workforce management
Founded 2014 · IRS-certified · ESAC-accredited · NAPEO member
- Servant HR
Faith-based HR services for growing companies
Founded 2003 · NAPEO member
- Sheakley HR
Family-owned risk management and HR solutions leader
Founded 1963 · NAPEO member
- ShiftableHR
Flexible workforce management technology with automation solutions
Founded 2020 · NAPEO member
- Simple HR
Florida-based PEO with high-touch service
Founded 2002 · NAPEO member
- simplicityHR by ALTRES
Honolulu PEO and HR services brand of ALTRES, in business in Hawaii since 1969
Founded 1969 · ESAC-accredited · NAPEO member
- Simploy
National PEO simplifying employment for growing businesses
Founded 1990 · NAPEO member
- SimplyPEO
The Employer's Champ PEO
Founded 1995
- Solid Business Solutions
Texas PEO delivering modern HR with traditional service
Founded 2011 · NAPEO member
- Spirit HR
High-touch PEO with veteran industry leadership
Founded 2015 · ESAC-accredited · NAPEO member
- Staff Leasing of Central New York
PEO helping small businesses run better
Founded 1989 · NAPEO member
- Staff Management
Certified PEO providing customized HR solutions
Founded 1983 · IRS-certified · NAPEO member
- Staffpro
Fortune 500 benefits for small business through PEO
Founded 2005 · NAPEO member
- StaffScapes
Colorado's oldest privately-owned PEO provider
Founded 1996 · NAPEO member
- Stitch PEO
First healthcare-focused PEO for medical practices
Founded 2021 · NAPEO member
- Stratus HR
Custom HR software PEO with 99% retention
Founded 1999 · NAPEO member
- Surge Resources
Comprehensive workforce management for growing companies
Founded 1987 · NAPEO member
- SWBC PEO
PEO backed by established financial services
Founded 2010 · IRS-certified · ESAC-accredited · NAPEO member
- SynchronyHR
St. Louis HR outsourcing firm with integrated technology
Founded 2019 · NAPEO member
- Syndeo Outsourcing
Premier HR partner supporting people-focused business growth
Founded 2002 · IRS-certified · ESAC-accredited · NAPEO member
- Synuity
Tailored PEO solutions with century of expertise
Founded 2016 · NAPEO member
T
- T&T Staff Management
Southwest's largest PEO with OSHA alliance partnership
Founded 1992 · NAPEO member
- Tandem HR
High-touch PEO with customized HR solutions
Founded 1998 · NAPEO member
- Teamwork Human Resources
Comprehensive HR services with co-employment relationship support
Founded 2001
- The Alliance Group
Relationship-focused PEO with comprehensive services
Founded 1997 · NAPEO member
- The Applied Companies
Veteran-founded PEO and executive recruiting services
Founded 1958 · NAPEO member
- The Employer Group
Wisconsin PEO offering personalized HR solutions since 1995
Founded 1995 · NAPEO member
- The Peoplease Group
Leading PEO for blue and grey-collar businesses
Founded 1994 · NAPEO member
- Thrive PEO
People-first Oklahoma PEO strengthening business culture
Founded 2020 · NAPEO member
- Tilson HR
Leading PEO with 25+ years experience
Founded 1995 · NAPEO member
- TNT Management Resources
Oregon PEO specializing in payroll and administration
Founded 1992 · NAPEO member
- Total Solutions
Outsourced business services including PEO solutions
Founded 2015 · NAPEO member
- TriNet
Large PEO with specialized support and consulting
Founded 1988 · IRS-certified · ESAC-accredited · NAPEO member
- Trion Solutions
One of nation's largest PEO providers
Founded 2004 · NAPEO member
U
- UniqueHR
Family-owned PEO with personalized administrative solutions
Founded 1977 · ESAC-accredited · NAPEO member
- Universal Select
Florida PEO with same-day service expertise
Founded 1983
- Upright Employer Services
Healthcare optimization through functional medicine and HR services
V
- VensureHR
Fast-growing PEO with industry-leading technology and services
Founded 2004 · NAPEO member
- VertiSource HR
Turnkey HR and payroll solutions with human touch
Founded 2007 · NAPEO member
- Vested HR Solutions
Human-focused PEO with transparent compassionate approach
Founded 2019 · ESAC-accredited · NAPEO member
- Vision HR, Inc.
Comprehensive Florida-based HR solutions since 1998
Founded 1998 · NAPEO member
- Visionary Payroll Solutions
Michigan payroll specialist with compliance focus
Founded 2021 · NAPEO member
W
- WHR Associates
Tech-driven PEO with human-centric approach
NAPEO member
- Worklogic HR
California HR management with national recognition
Founded 2000 · NAPEO member
- WorkSmart Systems
Indiana PEO serving SMBs with comprehensive HR solutions
Founded 1998 · IRS-certified · NAPEO member
X
#
- 3J & Associates
Family-owned PEO serving four states
Founded 1999 · NAPEO member
Questions about PEO companies
How many PEO companies are there in the US?
NAPEO, the PEO industry’s trade association, counted 502 PEOs in the United States at the end of 2025, serving about 233,000 client businesses (PEO Industry Footprint 2026). This list covers the PEOs in the PEOIQ directory and grows as providers are added.
Which PEO companies are IRS-certified?
The ones marked “IRS-certified” above. The IRS publishes its list of certified professional employer organizations (CPEOs) and updates it every quarter. Certification belongs to a legal entity, not a brand, and one PEO can hold several, so ask which entity will sign your contract and look that name up on the IRS list.
What does ESAC accreditation mean?
ESAC (the Employer Services Assurance Corporation) is an independent nonprofit that sets financial, operational and compliance standards for PEOs and checks that accredited PEOs keep meeting them. It is different from NAPEO membership, which means a PEO joined the industry’s trade association.
Does PEOIQ rank these companies?
No. The list is alphabetical and we don’t call any PEO the best: the right one depends on your headcount, the states you hire in, your industry and the benefits you need. If you want help narrowing it down, the consultation is free. If you sign with a PEO through our broker, the PEO pays the broker, and he shares part of his fee with us.
How do I choose between PEO companies?
Start with fit: the states you hire in, your headcount, your industry and the benefits you need. Then check certification and accreditation, and compare all-in pricing quoted on the same headcount. Our guides on how to choose a PEO and the questions to ask one walk through each step.
Not sure which PEO is right for you?
Tell us about your business and we’ll match you with vetted options. Free, no obligation.
Get matched →