TriNet

Public facts

National full-service PEO

Public PEO (NYSE: TNET) for small and midsize businesses, with a separate HR Plus (non-PEO) option, ESAC accreditation since 1995, and an IRS-certified PEO subsidiary.

Visit trinet.com

Overview

TriNet Group provides HR outsourcing for small and midsize businesses. The full PEO offering covers payroll, access to large-group benefits, compliance and risk mitigation, workers’ compensation, and an all-in-one HR platform, including AI-assisted employee tasks. TriNet also sells HR Plus, a platform-plus-support option without the same co-employment model. The company says it works with businesses from five to more than 1,000 employees, was founded in 1988, has held ESAC accreditation since 1995, and that a subsidiary is an IRS Certified PEO. Across TriNet PEO and HR Plus, it reports processing $70 billion in payroll in 2025. Global hiring and payroll are offered separately through partner Multiplier.

Why it matters TriNet is a public SMB PEO with a documented PEO vs. ASO-style split (PEO vs. HR Plus), long ESAC history, and an IRS-certified subsidiary—plus an explicit PEPM-plus-benefits pricing structure.

Target buyer: Small and midsize U.S. employers (vendor range: 5 to 1,000+ employees) comparing a full PEO versus TriNet HR Plus, including professional and multi-state firms.
Pricing model: Custom PEPM plus separate benefits, workers’ compensation, payroll taxes, and add-ons; TriNet states that pricing depends on company size and business state, and that a personalized quote is provided after a consultant meeting. The PEO FAQ describes a per-employee-per-month (PEPM) service fee plus separate costs for employee benefits, workers’ compensation, payroll taxes, and add-ons. No list PEPM is published. A Forrester TEI study commissioned by TriNet (2026) is used in marketing (66% ROI over three years); it is not a price list.
Availability: National
Research: Last researched 2026-08-23; Agent-strong category

Key features

TriNet PEO: co-employment HR, payroll, benefits access, workers’ comp, compliance, risk/EPLI guidance
HR Plus: platform plus support without PEO co-employment (separate product)
Online payroll with direct deposit, e-pay stubs, pay cards, electronic W-2s, time-off requests, mobile access
Medical, dental, vision plan access; fully managed 401(k); COBRA and open-enrollment administration
AI-powered employee Q&A and common HR tasks on the platform
Optional global workforce services via Multiplier (150+ countries, 120+ currencies; separate agreements and fees)
ESAC accreditation since 1995; IRS CPEO status for a TriNet subsidiary

Integrations

QuickBooks Online general-ledger sync (named on the PEO overview)
Time and attendance that integrates with payroll
Multiplier for optional international payroll/benefits/compliance
A complete public third-party app catalog was not published on the pages reviewed

Overview

TriNet is a U.S. HR and PEO provider for small and midsize businesses. The homepage states that more than 22,000 businesses choose TriNet. Two commercial offers are marketed:

TriNet PEO — full professional employer organization with co-employment: the client keeps control of day-to-day operations while allocating certain employer responsibilities to TriNet under a service agreement.
HR Plus — platform plus support for employers that want expertise without the full PEO model.

The PEO FAQ contrasts PEO and ASO: a PEO involves co-employment, generally processes payroll under the PEO’s tax ID, and may sponsor certain benefits; an ASO does not involve co-employment, uses the client’s tax ID, and does not sponsor benefits.

TriNet was founded in 1988. It states ESAC accreditation since 1995 (certificate materials on PEOReliability.org show ongoing verification) and that a subsidiary is classified as a Certified Professional Employer Organization by the IRS (announced July 2, 2018). Across PEO and HR Plus, TriNet says it processed $70 billion in payroll in 2025.

Target size on the FAQ is five to more than 1,000 employees. Headquarters-related BBB materials identify Dublin, California.

Key Capabilities

HR consulting and industry-specialized guidance (recruiting/onboarding practices, employee relations, benefits and payroll compliance).
Payroll: processing, direct deposit and debiting, paperless stubs, pay cards, electronic W-2s, time tracking/scheduling, employee mobile access to pay and time-off.
Benefits: access to medical, dental, and vision carriers and plans; fully managed 401(k); administration including COBRA, open enrollment, and payroll deductions.
Compliance and risk: federal, state, and local employment-law support; workers’ compensation from policy start through claims; claims-prevention guidance and EPLI for claims coverage.
All-in-one HR platform for onboarding through offboarding; AI tools for personalized answers and common employee tasks.
Optional TriNet Global via Multiplier: hire/onboard/offboard in 150+ countries and payroll in 120+ currencies; sold only as an add-on to TriNet PEO, not standalone.

A commissioned Forrester Total Economic Impact study (2026) is cited for 66% ROI over three years, $234,000 of HR time-savings value over three years, and payback in less than six months; TriNet notes individual results may vary.

Integrations & Ecosystem

Named integration: QuickBooks Online for general-ledger sync. Time and attendance is described as integrating with payroll. Global services run through Multiplier under separate terms. A full marketplace list was not published on the PEO pages reviewed.

Pricing

Quote-based. Official FAQ: PEPM service fee plus separate employee benefits, workers’ compensation, payroll taxes, and add-ons. Factors include company size and “the state of your business.” A pricing page is linked from the PEO overview; no public dollar PEPM appeared on the pages fetched.

Notes & Limitations

HR Plus is not a PEO; do not conflate it with co-employment benefits sponsorship.
Global services are partner-delivered and extra-cost.
$70 billion payroll is PEO + HR Plus combined.
Forrester figures are from a commissioned study, not a guarantee.
“National” follows multi-state compliance language and 50-state educational content; no exclusion list was found.

Sources

Tags: PEO · ASO · CPEO · ESAC · payroll · benefits · HR Plus · public company