TriNet

Overview

TriNet is a professional employer organisation (PEO) offering HR, benefits, payroll and compliance support, plus a lighter HR Plus service for growing teams^[16]. It reports more than 22,000 businesses as customers and about US$70 billion of payroll processed in 2025 across its PEO and HR Plus services^[16]. TriNet has held ESAC accreditation since 1995, and a subsidiary is an IRS-certified PEO^[16].

A PEO differs from benefits administration software: as a co-employer it sponsors benefit plans for its client companies’ employees, so small businesses can access plan options and administration that would otherwise require a broker and in-house staff. TriNet cites a Forrester Total Economic Impact study it commissioned that reports 95% time savings on HR tasks^[16].

TriNet does not publish prices^[16]. The PEO model trades control over plan design and vendor choice for simplicity, and leaving a PEO means re-establishing benefit plans, so it suits small companies that prefer an outsourced arrangement.

TriNet features

• IRS-certified PEO subsidiary
• Benefits, payroll and payroll-tax administration
• Risk mitigation and compliance consulting
• Services for small and medium-sized businesses
• PEO co-employment
• Sponsored benefit plans
• Payroll and compliance
• HR Plus non-PEO option

TriNet pricing

Quote-based; TriNet does not publish per-employee fees.

TriNet strengths and limitations

Appears in

• Best Benefits Administration Software in 2026 #12
• Best PEO Companies in 2026 #3

TriNet alternatives and competitors

Alternatives to TriNet: companies ranked in the same lists.

• Rippling
• AADP
• PrestigePEO
• CoAd (CoAdvantage)
• G&A Partners
• Deel
• Engage PEO
• VensureHR
• Paychex Flex
• Insperity
• PlanSource
• SSelerix