TriNet vs Paychex PEO

TriNet6.9/10

Paychex PEO6.1/10

Scored in PEO Services

The short answer

TriNet charges a flat per-employee monthly fee, by quote, that includes EPLI coverage and workers' comp administration, and offers HR Plus, an ASO without co-employment. Paychex quotes HR PEO and also sells HR Partner Plus and HR Pro for HR help without the full PEO.

By LeadChange Research TeamUpdated Nov 1, 2026Based on 13 sources, most recently checked Nov 10, 2026

TriNet

Best for: Small and mid-size businesses that want a full-service PEO

Choose TriNet if

You want EPLI coverage in the PEO fee.
You want compliance support tailored to your industry; TriNet names healthcare, technology and finance among others.
You want integrations such as QuickBooks Online, NetSuite and Greenhouse.
You want single sign-on through Okta or OneLogin.

TriNet plans and prices TriNet competitors

Paychex PEO

Best for: Small employers outsourcing HR, benefits and payroll

Choose Paychex PEO if

You want ISO 27001 as well as SOC 2 Type II.
You want a client advocate and, at 200+ employees, a relationship manager.
You want safety assessments with a master workers' comp policy.
You work in retail.

Paychex PEO plans and prices Paychex PEO competitors

LeadChange Score: editorial assessment based on public information.

Scorecard

TriNet wins 1Paychex PEO wins 04 ties

TriNet vs Paychex PEO by dimension
Dimension	TriNet	Paychex PEO
PricingBoth quote. TriNet bills benefit premiums and payroll taxes on top of its fee; Paychex lists a W-2 fee, a per-delivery payroll fee and a late-injury-report fee. Quote only1	Quote only	Quote only
IntegrationsTriNet lists 12 integrations, including QuickBooks Online, NetSuite and Greenhouse. Paychex PEO names no integration count on the pages we reviewed. 122	10 documented (vendor says 12)	None documented
SecurityPaychex states SOC 2 Type II and ISO 27001; TriNet holds SOC 2 Type II and states HIPAA compliance. Yes (per its 2023 white paper)3	SOC 2	SOC 2, ISO 27001
Fit and supportBoth serve small and midsize businesses. TriNet offers advisory or dedicated support on HR Plus; Paychex adds a client advocate at 10+ employees. Small businesses, mid-market companies4	Small businesses, mid-market companies	Small businesses, mid-market companies
CapabilitiesBoth cover payroll, benefits, workers' comp and HR compliance. TriNet adds performance management and recruiting; Paychex sells those as additional solutions. PEO, HR Plus (ASO), Payroll, Payroll tax, Benefits administration, HR compliance, Time and attendance, Performance management, Recruiting5	9 of 10 core capabilities	10 of 10 core capabilities

Key differences

Where TriNet and Paychex PEO differ (6)
Attribute	TriNet	Paychex PEO
Pricing model	Per employee1	Quote only6
Mobile apps	TriNet mobile app (pay stubs, time off)7	Paychex Oasis Employee Connect8
SOC 2 Type II	3	9
Support channels	Phone, Online, Advisory support (HR Plus), Dedicated support (HR Plus)1	Client advocate (10+ employees), HR business partner, Safety specialist (master workers' comp policy clients), Payroll specialist, Relationship manager (200+ employees)10
Founded	19884	197111
Headquarters	Dublin, California12	Rochester, NY and Cincinnati, OH (dual headquarters)11

Show 4 attributes where they are the same

Where they are the same (4)
Attribute	TriNet	Paychex PEO
Price transparency	Quote only1	Quote only6
Best for	Small businesses, mid-market companies4	Small businesses, mid-market companies10
Automatic tax filing	1	10
Ownership	Publicly traded4	Publicly traded11

Analysis by dimension

Pricing. Both quote. TriNet bills benefit premiums and payroll taxes on top of its fee; Paychex lists a W-2 fee, a per-delivery payroll fee and a late-injury-report fee.

Integrations. TriNet lists 12 integrations, including QuickBooks Online, NetSuite and Greenhouse. Paychex PEO names no integration count on the pages we reviewed.

Security. Paychex states SOC 2 Type II and ISO 27001; TriNet holds SOC 2 Type II and states HIPAA compliance.

Fit and support. Both serve small and midsize businesses. TriNet offers advisory or dedicated support on HR Plus; Paychex adds a client advocate at 10+ employees.

Capabilities. Both cover payroll, benefits, workers' comp and HR compliance. TriNet adds performance management and recruiting; Paychex sells those as additional solutions.

Neither one?

Justworks

Justworks has the highest LeadChange Score in PEO Services after excluding these two (9.7/10).

From $79/employee/mo (PEO Basic plan)13

Justworks review

More TriNet comparisons

More Paychex PEO comparisons

Frequently asked questions

Is TriNet cheaper than Paychex PEO?

Neither lists a price: both quote. TriNet’s flat fee includes EPLI and workers' comp administration, while Paychex lists separate fees such as a W-2 fee and a per-delivery payroll fee, so compare the full quote.

What does TriNet's PEO fee include?

Payroll and payroll tax administration, HR expertise, benefits administration, workers' comp administration, and EPLI coverage with claims management. Benefit premiums and the payroll taxes themselves are billed on top.

Does TriNet offer an option without co-employment like Paychex?

Yes: TriNet HR Plus is an ASO with an HR platform, priced per employee by service level. Paychex offers HR Partner Plus and HR Pro for HR guidance without the full PEO.

Which industries do TriNet and Paychex PEO focus on?

TriNet focuses on healthcare, technology and finance. Paychex PEO names retail among its industry pages.

What support does Paychex PEO give compared with TriNet?

Paychex assigns an HR business partner and a payroll specialist, adds a client advocate at 10+ employees and a relationship manager at 200+. TriNet supports clients by phone and online, with advisory or dedicated support on HR Plus.

Do TriNet and Paychex PEO use AI?

TriNet offers AI-powered tools for routine HR questions and tasks. Paychex PEO lists no AI features on the pages we reviewed.

Is TriNet or Paychex PEO more secure?

Both TriNet and Paychex PEO state SOC 2 Type II. TriNet states HIPAA (unverified for Paychex PEO). Paychex PEO states ISO 27001 (unverified for TriNet).

How this page was made

What it is built from
28 verified facts, each checked against the vendor's own pages or another primary source, most recently on Nov 10, 2026.
Method
Scored and compared with the LeadChange methodology, version 1.5. Read the methodology
Independent review
Not reviewed yet by our independent reviewer. How we review
Hands-on testing
We have not tested either product hands-on: this page uses public information only.
Who made it
The LeadChange Research Team, following a written research process. No named expert has reviewed this page. About us
Independence and errors
Who pays us never changes a score or a rank. If something here is wrong, tell us and we correct it publicly. Request a correction

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Sources

The 13 pages this page's facts come from. The date beside each is our last check of the facts taken from it (the oldest, when they differ). The numbers beside the figures above link here.

Quotes from the sources

TriNet trinet.com/peo/pricing“Pricing is customized based on your company size, industry, geographic footprint, and services needed, so TriNet does not publish standard list pricing.” “PEPM stands for "Per Employee Per Month" and is the pricing method TriNet uses to determine your administrative cost.”
TriNet trinet.com/customer-resource-center/technology/integration-center“TriNet integrates with many systems:”
TriNet assets.contentstack.io/v3/assets/blt9ccc5b591c9e2640/blt2147f424591a508f/657239817631d147b77ffb80/TriNet_Security_and_Privacy_White_Paper_2023.pdf“a SOC 2 Type 2 report for the TriNet platform. Current copies and corresponding bridge letters (issued each calendar quarter) are available upon request and are reserved for existing customers.” “TriNet maintains a HIPAA compliance framework that monitors and tracks our compliance to the requirements of HIPAA.”
TriNet trinet.com/about-us“Power the success of small and medium-size businesses by supporting their growth and enabling their people.” “30+ in business, founded in 1988”
TriNet TriNet HR Plus - TriNet“HR Plus covers areas such as recruiting, HR, payroll, payroll tax, benefits administration, and more!”
Paychex paychex.com/human-resources/hr-packages“Get Custom Pricing”
TriNet trinet.com/peo“Our platform also lets your employees view pay stubs and request time off conveniently from our mobile app.”
Paychex paychex.com/apps/mobile-app“Paychex Oasis Employee Connect”
Paychex paychex.com/corporate/security“Paychex maintains SOC 1 Type 2 and SOC 2 Type 2 reports over various products and services.” “ISO 27001 Certification”
Paychex Paychex: PEO services“You'll work with dedicated professionals who understand your business, including a Client Advocate, HR Business Partner, Safety Specialist, and Payroll Specialist. … Client advocate available for client with 10 or more employees. Clients with 200 or more employees will be assigned a Relationship Manager. Clients with fewer than 10 employees will be supported by their assigned HR Business Partner.” “Small to mid-sized businesses have a lot to gain, as PEOs provide access to Fortune 500-level benefits, dedicated HR expertise, and risk management solutions at costs comparable to handling HR internally.”
Paychex paychex.com/corporate“Founded in 1971 by B” “Dual-Headquarters — Rochester, NY and Cincinnati, OH”
TriNet trinet.com/locations“Headquarters One Park Place Suite 600 Dublin, CA 94568”
Justworks justworks.com/pricing“Justworks PEO pricing starts at $79 per month per employee for our Basic plan and $124 per month per employee for our Plus plan. Justworks Payroll customers pay $8 per month per employee plus a $50 base fee.”