ADP TotalSource and TriNet both bundle payroll tax administration, benefits, workers' compensation, and HR compliance for small and midsized businesses, and both price by quote only. ADP adds a dedicated HR business partner, 24/7 employee support and applicant tracking with background checks.
| Attribute | ADP TotalSource | TriNet |
|---|---|---|
| Pricing model | Quote only | Per employee |
| Mobile apps | ADP mobile app | IOS, Android |
| Support channels | Dedicated HR business partner, ADP MyLife Advisors (employee support) | Phone, Online, Advisory support (HR Plus), Dedicated support (HR Plus) |
| Founded | 1949 | 1988 |
| Headquarters | Roseland, New Jersey, US | Dublin, California |
| Attribute | ADP TotalSource | TriNet |
|---|---|---|
| Price transparency | Quote only | Quote only |
| Best for | Small businesses, mid-market companies | Small businesses, mid-market companies |
| Ownership | Published | Published |
Pricing. Both are quote-only. TriNet discloses a per-employee-per-month fee, an annual contract, and that benefit premiums are billed separately. ADP discloses only the quote drivers: headcount, workers' compensation risk, and location complexity. Neither publishes a rate, so no winner can be named.
Capabilities. Both list payroll and payroll tax administration, benefits, workers' compensation, and HR compliance. Each adds extras (ADP: applicant tracking and background checks; TriNet: time and attendance, performance management).
Fit and support. Both target small and midsized businesses and cover all 50 states. ADP names a dedicated HR business partner and 24/7 employee support. TriNet lists phone, online, and HR Plus advisory or dedicated support, with no hours stated.
Justworks has the highest LeadChange Score in PEO Services after excluding these two (5.2/10).
Neither publishes prices, so a direct comparison is not possible. ADP quotes by workforce size, workers' compensation risk, and location complexity. TriNet quotes a per-employee-per-month fee on an annual contract, with benefit premiums billed separately. Request written quotes from both using the same headcount, states, and benefit plans.
Both state that they serve small and midsized businesses and support all 50 states. ADP's listing emphasizes a dedicated HR business partner. TriNet's pairs the PEO with an HR Plus (ASO) option for companies that want HR tools without full co-employment. Fit depends on whether you want a PEO at all.
Neither vendor documents a migration process, fees, or a timeline in either direction. ADP states implementation typically takes a few weeks; TriNet states no timeline. Ask each for a written transition plan covering payroll tax accounts, benefits renewal dates, and workers' compensation coverage before committing.
On published information, the services overlap. ADP's page stresses a dedicated HR business partner, 24/7 employee support, and bundled applicant tracking. TriNet offers both a PEO and HR Plus (ASO), plus time and attendance and performance management. Pricing is quote-only for both, so the difference shows up in the quote.
Share your headcount and needs once; both vendors can quote for your situation.
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First published.
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