Best PEO Companies in South Dakota
Compare Professional Employer Organizations serving South Dakota businesses. Editorial ratings are independent — featured placements are paid visibility, not endorsements.
PEO Companies Serving South Dakota
Justworks
New York, NY · Est. 2012
Insperity
Kingwood, TX · Est. 1986
TriNet
Dublin, CA · Est. 1988
ADP TotalSource
IRS CPEO ✓ESAC ✓NationwideHQ: Roseland, NJ · Est. 1996
ADP TotalSource is the Professional Employer Organization division of ADP (NASDAQ: ADP), one of the world's largest payroll and HR companies with over 75 years of history and more than 1.1 million clients across 140+ cou…
Rippling
NationwideHQ: San Francisco, CA · Est. 2016
Rippling is a San Francisco-based workforce management platform and PEO founded in 2016 by Parker Conrad and Prasanna Sankar.
Oasis, a Paychex Company
IRS CPEO ✓NationwideHQ: Sarasota, FL · Est. 1996
Oasis, a Paychex Company, is a full-service Professional Employer Organization formed through Paychex's 2018 acquisition of Oasis Outsourcing — one of the largest privately held PEOs in the country at the time, serving o…
Engage PEO
IRS CPEO ✓ESAC ✓NationwideHQ: Hollywood, FL · Est. 2011
Engage PEO is a Hollywood, Florida-based IRS CPEO certified Professional Employer Organization founded in 2011.
CoAdvantage
IRS CPEO ✓NationwideHQ: Bradenton, FL · Est. 1997
CoAdvantage is a Bradenton, Florida-based Professional Employer Organization founded in 1997.
Infiniti HR
NationwideHQ: Rockville, MD · Est. 2008
Infiniti HR is a Burtonsville, Maryland-based IRS CPEO certified Professional Employer Organization founded in 2004.
FrankCrum
NationwideHQ: Clearwater, FL · Est. 1981
A family-owned PEO based in Florida serving businesses nationwide with 2-500 employees. FrankCrum is one of the few PEOs with its own insurance company, enabling highly competitive workers comp rates.
PrestigePEO
IRS CPEO ✓ESAC ✓NationwideHQ: Melville, NY · Est. 1998
PrestigePEO is a national Professional Employer Organization headquartered in Melville, New York, serving small and mid-sized businesses across all 50 states since 1998.
IntelliPro
IRS CPEO ✓NationwideHQ: San Jose, CA · Est. 2009
IntelliPro is an IRS-certified PEO headquartered in San Jose, California, specializing in HR outsourcing, payroll administration, and employee benefits management for technology companies and professional services firms…
Paychex PEO
IRS CPEO ✓ESAC ✓NationwideHQ: Rochester, NY · Est. 1971
Paychex PEO is the co-employment division of Paychex (NASDAQ: PAYX), one of the largest HR and payroll companies in the United States with over 50 years of experience serving American businesses.
BBSI
ESAC ✓NationwideHQ: Vancouver, WA · Est. 1965
Barrett Business Services, Inc. (BBSI) is a publicly traded (NASDAQ: BBSI) Professional Employer Organization headquartered in Vancouver, Washington.
Adams Keegan
IRS CPEO ✓ESAC ✓NationwideHQ: Memphis, TN · Est. 1987
Adams Keegan is a Memphis, Tennessee-based PEO offering both co-employment (PEO) and administrative services organization (ASO) models.
Deel PEO
NationwideHQ: San Francisco, CA · Est. 2019
Deel PEO is the domestic U.S. co-employment offering from Deel, a San Francisco-based global HR and payroll platform founded in 2019 and valued at $16.8 billion following a $450 million Series G in May 2025.
AlphaStaff
ESAC ✓NationwideHQ: Sunrise, FL · Est. 1997
AlphaStaff is a Sunrise, Florida-based Professional Employer Organization founded in 1997 and ESAC accredited.
Vensure Employer Services
NationwideHQ: Chandler, AZ · Est. 2004
Vensure Employer Services is one of the largest privately held PEOs in the United States, headquartered in Chandler, Arizona, and founded in 2004.
America's Back Office
IRS CPEO ✓NationwideHQ: Chandler, AZ · Est. 2000
America's Back Office is an IRS CPEO certified and ESAC accredited PEO headquartered in Chandler, Arizona, providing comprehensive HR outsourcing services to small and mid-sized businesses across the United States.
Avitus Group
NationwideHQ: Billings, MT · Est. 1994
Avitus Group is a Billings, Montana-based PEO and HR outsourcing company founded in 1994, providing payroll processing, employee benefits, workers' compensation, and HR services to businesses nationwide.
Modern Business Associates
NationwideHQ: Tampa, FL · Est. 1990
Modern Business Associates (MBA) is a Tampa, Florida-based PEO founded in 1990, providing co-employment services including payroll processing, employee benefits, HR administration, workers' compensation, and compliance s…
Connectify HR
RegionalHQ: West Des Moines, IA · Est. 2010
Connectify HR is a West Des Moines, Iowa-based PEO providing co-employment services including payroll, employee benefits, HR administration, and compliance support to small and mid-sized businesses across the Midwest.
Proservice National
NationwideHQ: Honolulu, HI · Est. 2010
Proservice National is the mainland U.S. PEO extension of ProService Hawaii, providing co-employment services including payroll, benefits, HR administration, and compliance support to businesses across the continental Un…
Regis HR Group
ESAC ✓NationwideHQ: Tampa, FL · Est. 2002
Regis HR Group is a Tampa, Florida-based national PEO providing co-employment services including payroll processing, employee benefits, HR administration, workers' compensation, and compliance support to businesses acros…
Stratus HR
NationwideHQ: South Jordan, UT · Est. 2003
Stratus HR is a South Jordan, Utah-based PEO (operating as ISI HR) providing comprehensive co-employment services to small and mid-sized businesses nationwide.
INVO PEO
NationwideHQ: Tampa, FL · Est. 2010
INVO PEO is a Tampa, Florida-based Professional Employer Organization providing co-employment services including payroll processing, employee benefits, HR administration, workers' compensation, and compliance support to…
SinglePoint Outsourcing
NationwideHQ: Scottsdale, AZ · Est. 2007
SinglePoint Outsourcing is a Scottsdale, Arizona-based PEO providing national co-employment services including payroll, employee benefits, HR administration, and compliance support to small and mid-sized businesses acros…
NetPEO
NationwideHQ: Atlanta, GA · Est. 2009
NetPEO is an Atlanta, Georgia-based PEO broker and provider offering co-employment services and PEO matching to businesses nationwide.
Associated Employers
RegionalHQ: Billings, MT · Est. 1945
Associated Employers is one of Montana's oldest HR service organizations, headquartered in Billings and founded in 1945.
IronRoad
RegionalHQ: Des Moines, IA · Est. 2011
IronRoad is a Des Moines, Iowa-based PEO providing payroll, employee benefits, HR administration, and compliance services to small and mid-sized businesses across the Midwest.
PrimePay
NationwideHQ: West Chester, PA · Est. 1986
PrimePay is a West Chester, Pennsylvania-based payroll and PEO services company founded in 1986, providing co-employment services and payroll administration to small and mid-sized businesses nationwide.
Prism HR
NationwideHQ: Hopkinton, MA · Est. 1996
PrismHR is a Hopkinton, Massachusetts-based HR technology platform and PEO services provider founded in 1996.
Arkenstone Systems
ESAC ✓RegionalHQ: Menlo Park, CA · Est. 2025
Arkenstone Systems, LLC, operating publicly as Arkenstone Defense, is a Menlo Park, California-based company founded in 2025 that built Cohort, a Professional Employer Organization designed specifically for defense and d…
Clear Employer Services
IRS CPEO ✓ESAC ✓RegionalHQ: Langhorne, PA · Est. 2015
Clear Employer Services is a Langhorne, Pennsylvania-based Professional Employer Organization founded in 2015, offering a full suite of HR outsourcing models including PEO co-employment, Administrative Services Organizat…
Spirit Human Resources
ESAC ✓RegionalHQ: Oklahoma City, OK · Est. 2015
Spirit Human Resources, LLC is an Oklahoma City-based Professional Employer Organization founded in 2015 by CEO Dale Hageman and COO Marilyn Conyer, who bring more than 40 years of combined HR outsourcing experience dati…
Lone Star PEO
ESAC ✓RegionalHQ: San Antonio, TX · Est. 2016
Lone Star PEO, Inc. is a San Antonio, Texas-based Professional Employer Organization founded in 2016, licensed to operate across a broad multi-state footprint anchored in Texas.
CalmHR
ESAC ✓RegionalHQ: Rockville, MD · Est. 2020
CalmHR, Inc. is a Rockville, Maryland-based Professional Employer Organization founded in 2020 by Joe Appelbaum, who previously founded and led Potomac Insurance, an employee benefits brokerage he built starting in 1990…
Choosing a PEO in South Dakota
South Dakota's minimum wage is $11.85 per hour as of January 1, 2026, adjusted automatically each year based on inflation under a voter-approved measure (Initiated Measure 18), so South Dakota employers should expect the rate to move most years rather than plan around a fixed number. Overtime follows the standard federal rule of 1.5 times the regular rate for hours worked over 40 in a week. South Dakota has no state income tax, which shapes the state's broader reputation as a low-regulation environment for employers.
South Dakota stands out on workers' compensation in a way most employers do not expect: coverage is not mandatory for South Dakota employers. It is strongly recommended, since carrying it protects an employer from common-law negligence lawsuits over workplace injuries, but the state does not legally require it the way nearly every other state does. Employers who choose to go without coverage take on meaningfully higher liability exposure in the event of a workplace injury.
South Dakota requires PEOs to be approved by the Department of Revenue as a professional employer organization, a process tied to the state's sales tax licensing system rather than the insurance or labor department structure used in most other states. South Dakota has no state-level mini-WARN law, relying on the federal WARN Act's 100-employee threshold, and follows the at-will employment doctrine.
Final wages in South Dakota are due on the next regular payday following separation, regardless of whether the employee quit, was terminated, or was laid off, and an employer may withhold the final check until company property is returned. South Dakota's economy centers on agriculture, financial services (particularly credit card and banking operations headquartered in Sioux Falls), tourism, and healthcare. A PEO with South Dakota expertise can help businesses evaluate the workers' comp decision, verify PEO approval status with the Department of Revenue, and manage final pay compliance. Use the form on this page to connect with PEOs serving South Dakota businesses.
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Frequently Asked Questions
What is the minimum wage in South Dakota in 2026?
South Dakota's minimum wage is $11.85 per hour as of January 1, 2026. Under a voter-approved measure, the rate adjusts automatically each year based on the Consumer Price Index, rounded up to the nearest five cents.
Is workers' compensation insurance required in South Dakota?
No, not by law. South Dakota is one of the few states that does not mandate workers' compensation coverage. It is strongly recommended, since carrying coverage protects employers from common-law negligence lawsuits over workplace injuries, but employers who opt out are legally permitted to do so and take on greater liability exposure.
Does South Dakota require PEOs to be licensed?
South Dakota requires PEOs to be approved by the Department of Revenue as a professional employer organization, administered through the state's sales tax licensing system rather than an insurance or labor department, which is the more common structure in other states.
When must South Dakota employers pay a departing employee's final wages?
South Dakota requires final wages to be paid on the next regular payday after separation, whether the employee quit, was terminated, or was laid off. Employers may withhold the final paycheck until the employee returns company property.