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Best PEO Companies in Illinois

We list Illinois and Chicago-area PEOs alongside the national providers, so you can weigh local expertise against national benefits buying power.

Showing 11 of 11 providers in Illinois

Justworks logo

Justworks

New York, NY · est. 2012
Software-led PEOCPEOESAC

Transparent flat-fee PEO for SMBs, startups and remote teams.

4.5
Very Good
National
4.3
Very Good
Local
  • Illinois coverage: Full
  • Transparency: Very Good · PEPM
  • Best for: Small teams that want published, predictable pricing.
$59-$99 /ee/mo
Published PEPM, steps down after 50 employees
No state expansion fee
60+ requests this month
Justworks is a commercial PEOServices.org partner. Rankings are never guaranteed to partners; this card reflects our independent scoring.
Pricing & Transparency▾
Pricing Model
PEPM
Headline
$59-$99 /ee/mo — Published PEPM, steps down after 50 employees
Admin Fee (Basic)
$59 /ee/mo (Payroll)
Admin Fee (with benefits)
$99 /ee/mo (PEO with benefits)
Setup Fee
$0
Min. Employees
1-2
Early Termination
$0 (month to month)
Benefits Markup
Disclosed; none on master medical
Transparency
Very Good
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
New York, NY
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Yes
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Enterprise
Dedicated Support
Yes
Min. Commitment
None
Rippling PEO logo

Rippling PEO

San Francisco, CA · est. 2016
Software-led PEONo CPEO

Best-in-class software unifying HR, IT and payroll, with a PEO on/off toggle.

4.1
Good
National
4.3
Very Good
Local
  • Illinois coverage: Full
  • Transparency: Good · PEPM
  • Best for: Tech-forward teams that want to switch the PEO off later and keep the platform.
From $8 /user/mo + modules
Modular; ~$25-$50 all-in before IT modules
No state expansion fee
50+ requests this month
Pricing & Transparency▾
Pricing Model
PEPM
Headline
From $8 /user/mo + modules — Modular; ~$25-$50 all-in before IT modules
Setup Fee
Quote
Min. Employees
5
Early Termination
None (monthly available)
Transparency
Good
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
San Francisco, CA
Certifications▾
IRS-Certified PEO (CPEO)
Not certified
ESAC Accredited
Not accredited
NAPEO Member
No
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Enterprise
Dedicated Support
Yes
Min. Commitment
None
TriNet logo

TriNet

Dublin, CA · est. 1988
National PEOCPEOESAC

Industry-vertical PEO packages for tech, life sciences, finance and nonprofit.

4.0
Good
National
4.0
Good
Local
  • Illinois coverage: Full
  • Transparency: Average · % of Payroll
  • Best for: Companies wanting deep industry-specific benefits and HR.
~$150 /ee/mo
Quote-based; vertical packages
No state expansion fee
45+ requests this month
Pricing & Transparency▾
Pricing Model
% of Payroll
Headline
~$150 /ee/mo — Quote-based; vertical packages
Setup Fee
Quote
Min. Employees
5
Early Termination
Per contract
Transparency
Average
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Dublin, CA
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Yes
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Advanced
Dedicated Support
Yes
Min. Commitment
12 Months
ADP TotalSource logo

ADP TotalSource

Roseland, NJ · est. 1998
National PEOCPEOESAC

The nation's largest PEO, with enterprise-grade technology and benefits scale.

3.9
Average
National
4.0
Good
Local
  • Illinois coverage: Full
  • Transparency: Poor · % of Payroll
  • Best for: Companies of 50-500 wanting enterprise tech and a 30-day exit.
~$130-$200 /ee/mo
Quote; supports 700k+ worksite employees
No state expansion fee
35+ requests this month
Pricing & Transparency▾
Pricing Model
% of Payroll
Headline
~$130-$200 /ee/mo — Quote; supports 700k+ worksite employees
Setup Fee
Quote
Min. Employees
5
Early Termination
30-day notice
Transparency
Poor
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Roseland, NJ
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Yes
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Enterprise
Dedicated Support
Yes
Min. Commitment
12 Months
Insperity logo

Insperity

Kingwood, TX · est. 1986
National PEOCPEOESAC

High-touch HR consulting with 90+ US offices and dedicated service teams.

3.9
Average
National
4.2
Good
Local
  • Illinois coverage: Full
  • Transparency: Poor · % of Payroll
  • Best for: Businesses that value a hands-on, dedicated HR partner.
~$150-$300 /ee/mo
Percentage of payroll; quote only
No state expansion fee
30+ requests this month
Pricing & Transparency▾
Pricing Model
% of Payroll
Headline
~$150-$300 /ee/mo — Percentage of payroll; quote only
Setup Fee
Quote
Min. Employees
5
Early Termination
Per contract
Transparency
Poor
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Kingwood, TX
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Yes
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Advanced
Dedicated Support
Yes
Min. Commitment
12 Months
Paychex PEO logo

Paychex PEO

Rochester, NY · est. 1971
National PEOCPEOESAC

SMB-focused PEO integrated with the Paychex Flex platform.

3.8
Average
National
3.8
Average
Local
  • Illinois coverage: Full
  • Transparency: Average · Hybrid
  • Best for: Smaller teams wanting a recognised national brand.
~$40-$160 /ee/mo
Hybrid: PEPM or percentage by size
No state expansion fee
25+ requests this month
Pricing & Transparency▾
Pricing Model
Hybrid
Headline
~$40-$160 /ee/mo — Hybrid: PEPM or percentage by size
Setup Fee
Quote
Min. Employees
5
Early Termination
Per contract
Transparency
Average
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Rochester, NY
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Yes
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Advanced
Dedicated Support
Yes
Min. Commitment
12 Months
Amplify PEO logo

Amplify PEO

Lincolnshire, IL · est. 2017
Local · ILCPEOESAC

Flexible bundled or à la carte services with 24/7 support.

4.2
Good
State
  • Illinois coverage: Full
  • Transparency: Good · Hybrid
Custom quote
Quote-based, estimated
Estimated
No state expansion fee
10+ requests this month
Pricing & Transparency▾
Pricing Model
Hybrid
Headline
Custom quote — Quote-based, estimated
Setup Fee
Quote
Min. Employees
Not disclosed
Early Termination
Not disclosed
Transparency
Good
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Lincolnshire, IL
Home State
IL
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Yes
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Basic
Dedicated Support
Yes
Min. Commitment
12 Months
GMS (Illinois) logo

GMS (Illinois)

Richfield, OH (IL ops) · est. 1996
Local · ILCPEO

Midwest CPEO with strong workers' comp programmes.

4.1
Good
State
  • Illinois coverage: Full
  • Transparency: Average · Hybrid
Custom quote
Quote-based, estimated
Estimated
No state expansion fee
10+ requests this month
Pricing & Transparency▾
Pricing Model
Hybrid
Headline
Custom quote — Quote-based, estimated
Setup Fee
Quote
Min. Employees
Not disclosed
Early Termination
Not disclosed
Transparency
Average
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Richfield, OH (IL ops)
Home State
IL
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Not accredited
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Basic
Dedicated Support
Yes
Min. Commitment
12 Months
Aspen HR (Chicago) logo

Aspen HR (Chicago)

Chicago, IL office · est. 2017
Local · ILCPEOESAC

Premium PEO for finance and professional services.

4.4
Very Good
State
  • Illinois coverage: Full
  • Transparency: Average · Hybrid
Custom quote
Quote-based, estimated
Estimated
No state expansion fee
10+ requests this month
Pricing & Transparency▾
Pricing Model
Hybrid
Headline
Custom quote — Quote-based, estimated
Setup Fee
Quote
Min. Employees
Not disclosed
Early Termination
Not disclosed
Transparency
Average
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Chicago, IL office
Home State
IL
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Yes
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Advanced
Dedicated Support
Yes
Min. Commitment
12 Months
Questco logo

Questco

Spring, TX (IL ops) · est. 1989
Local · ILCPEO

CPEO active across Illinois.

4.0
Good
State
  • Illinois coverage: Full
  • Transparency: Average · Hybrid
Custom quote
Quote-based, estimated
Estimated
No state expansion fee
10+ requests this month
Pricing & Transparency▾
Pricing Model
Hybrid
Headline
Custom quote — Quote-based, estimated
Setup Fee
Quote
Min. Employees
Not disclosed
Early Termination
Not disclosed
Transparency
Average
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Spring, TX (IL ops)
Home State
IL
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Not accredited
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Basic
Dedicated Support
Yes
Min. Commitment
12 Months
ExtensisHR (IL) logo

ExtensisHR (IL)

Woodbridge, NJ (IL ops) · est. 1997
Local · ILCPEOESAC

National CPEO serving Illinois SMBs.

4.1
Good
State
  • Illinois coverage: Full
  • Transparency: Average · Hybrid
Custom quote
Quote-based, estimated
Estimated
No state expansion fee
10+ requests this month
Pricing & Transparency▾
Pricing Model
Hybrid
Headline
Custom quote — Quote-based, estimated
Setup Fee
Quote
Min. Employees
Not disclosed
Early Termination
Not disclosed
Transparency
Average
State Coverage▾
Illinois coverage
Full
State Expansion Fee
None
Home Base
Woodbridge, NJ (IL ops)
Home State
IL
Certifications▾
IRS-Certified PEO (CPEO)
Yes
ESAC Accredited
Yes
NAPEO Member
Yes
Benefits & Services▾
  • Payroll & Tax Filing
  • Health Benefits (Master Plan)
  • Workers' Comp
  • 401(k) Administration
  • ACA Reporting
  • HRIS Platform
  • EPLI
  • Dedicated Support
Platform & Support▾
Software Tier
Advanced
Dedicated Support
Yes
Min. Commitment
12 Months

Illinois PEO services: frequently asked questions

How much does a PEO cost in Illinois?

Most PEOs in Illinois charge between $50 and $160 per employee per month, or roughly 2 to 12 percent of payroll on the percentage model. Local providers often quote at the lower end for admin, while bundled benefits and workers' comp pass-throughs sit on top. Get at least two written quotes before signing.

Do I need a CPEO in Illinois?

IRS certification is not a legal requirement in Illinois, but it shifts federal payroll tax liability to the PEO and avoids a wage-base restart mid-year. For most growing employers it is worth insisting on. Several Illinois regional providers are CPEO; some are not. Fewer than 7 percent of US PEOs are certified, so check before you sign.

Which PEOs are based in Illinois?

Our Illinois comparison shows the most relevant regional providers alongside the six national PEOs. Look for a "Local" tag next to a provider name. Regional firms often win on local compliance depth; national firms win on benefits buying power.

Compare PEO services in other states