Justworks (AF Score 76) and TriNet (AF Score 72) are two of the most cross-shopped payroll platforms in our directory. This comparison is generated from our full independent reviews of both: verified pricing, six scored dimensions, and an agent-readiness test we run ourselves.
The verdict at a glance
Justworks scores higher overall (76 to 72), but the right pick depends on what you weight.
Justworks is the PEO you can put in a budget model: published fees of $79 or $124 per employee per month, payroll from $50 plus $8, EOR at a flat $599, with 24/7 human support and co-employed big-group benefits.
TriNet. The big-company-benefits PEO for white-collar SMBs. Real compliance lift under co-employment, a flat but unpublished admin fee, and a health book that was repriced hard through 2025 and 2026.
Quick facts
- Justworks AF score. 76/100
- Justworks typical cost. $79-124/employee/mo (published)
- Justworks implementation. Low-Medium
- Justworks best fit. US teams of roughly 2 to 100 employees buying their first PEO and group health
- TriNet AF score. 72/100
- TriNet typical cost. $100-150/employee/mo admin (buyer-reported)
- TriNet implementation. Medium
- TriNet best fit. White-collar firms, 5 to 500 employees, buying big-company benefits and compliance
Dimension by dimension
- Compliance depth. Justworks 78, TriNet 88. Edge: TriNet.
- Scalability. Justworks 60, TriNet 72. Edge: TriNet.
- Support. Justworks 86, TriNet 71. Edge: Justworks.
- Implementation. Justworks 87, TriNet 78. Edge: Justworks.
- Pricing transparency. Justworks 96, TriNet 30. Edge: Justworks.
- AI / agent readiness. Justworks 32, TriNet 42. Edge: TriNet.
What each actually costs
Justworks: $79-124/employee/mo (published) (Published flat PEPM tiers; premiums and taxes pass through)
TriNet: $100-150/employee/mo admin (buyer-reported) (Quote-only flat PEPM admin fee plus at-cost pass-throughs)
Pick Justworks if
- Seed to Series B US startups and professional firms, roughly 2 to 100 employees, buying group health for the first time
- Controllers who want PEO costs they can model from a published price list instead of a sales quote
- Multi-state teams that need payroll filings, SUI administration, and workers' comp handled without hiring HR
Pick TriNet if
- White-collar firms of roughly 20 to 250 employees competing for talent with big-company benefits
- Multi-state teams that want payroll filings, SUI accounts and W-2s handled under TriNet's EINs
- CFOs who prefer a flat, auditable per-employee admin fee over percent-of-payroll PEO pricing
Further reading
Keep exploring
Both reviews are updated on a rolling cycle by our research agents.
