Paychex PEO vs TriNet
How the two PEOs compare on pricing, minimum employees and fit.
| Paychex PEO | TriNet | |
|---|---|---|
| Company size | About 19,000 employees (Paychex, 2025) | 3,622 employees (2019) |
| Headquarters | Rochester, NY | Dublin, CA |
| Founded | 1971 | 1988 |
| Pricing | No published PEO pricing. Quote required. | No published PEO pricing. Quote required. |
| Pricing model | Quote only | Quote only |
| Best for | Smaller US businesses that want payroll and HR from one provider | Companies in TriNet's core industries that want industry-specific packages |
| IRS certified (CPEO) | Yes, on the IRS list | Yes, on the IRS list |
| ESAC accreditation | Accredited | Not confirmed |
| Minimum employees | 5 employees | 5 employees |
Carriers, 401(k) and workers' comp: side by side
| Paychex PEO | TriNet | |
|---|---|---|
| Health carriers | Not publicly listed yet. We will get this for you: request a quote and we will include it. | Plans sponsored through a broad range of carriers; none named |
| 401(k) provider | Not publicly listed yet. We will get this for you: request a quote and we will include it. | TriNet-managed 401(k); recordkeeper not named |
| Workers' comp | Not publicly listed yet. We will get this for you: request a quote and we will include it. | Fully insured through policies negotiated with third-party carriers; carriers not named |
| Other named partners | Paychex acquired Oasis Outsourcing in 2018; carrier and 401(k) details not named in sources reviewed | Healthee powers the Personal Health Assistant |
Due diligence checked November 4, 2026. We only list carriers and partners that a filing, the provider or a named review states. Many PEOs do not publish their carriers or recordkeepers, so "not publicly listed" means we could not find it, not that none exists. If something is missing, request a quote and we will get it from the PEO for you. Lineups vary by state and change at renewal.
Questions to ask before you sign
- Which medical carriers and networks are available in my state and zip code?
- Are the health plans fully insured or partially self-funded, and who bears claims risk?
- Who is the 401(k) recordkeeper, and what are the total plan fees and match options?
- Who is the workers' comp carrier, how are rates set, and what happens to my experience rating if I leave?
- Is the entity that will employ my staff on the IRS CPEO list, and is it ESAC accredited?
- What renewal increase did your plans see in each of the last 3 years?
Choose Paychex PEO if
Smaller US businesses that want payroll and HR from one provider.
- ESAC and IRS accredited
- Payroll account manager and HR generalist support
- Multi-state payroll
Choose TriNet if
Companies in TriNet's core industries that want industry-specific packages.
- Broad access to major health carriers
- Industry-specific PEO packages
Ask Paychex PEO about
- Five-employee minimum and a one-year contract reported
- Reported as weaker at larger scale
Ask TriNet about
- Requires a minimum of five employees
- Reviewers report escalating renewal pricing
- Does not support hazardous industries such as heavy construction
Frequently asked questions
Is Paychex PEO or TriNet cheaper?
Paychex PEO: No published PEO pricing. Quote required. TriNet: No published PEO pricing. Quote required. Published rates are not directly comparable to quote-only pricing, and health premiums are separate.
Which is better for a small company, Paychex PEO or TriNet?
Paychex PEO is best for smaller us businesses that want payroll and hr from one provider. TriNet is best for companies in trinet's core industries that want industry-specific packages.
Last verified November 4, 2026. Based on third-party reviews and vendor pricing pages. See each provider page for sources.