HR Plus is TriNet's Administrative Services Organization (ASO) solution for small and mid-size businesses that want HR tools and expertise without a co-employment relationship. It provides payroll processing, benefits administration, HR guidance, and compliance support delivered through a single all-in-one platform under the client company's own tax ID.

Unlike the full TriNet PEO offering, HR Plus does not involve co-employment or PEO-sponsored benefits, so employers retain direct control while gaining experienced HR and payroll professionals. Pricing follows a per-employee-per-month model based on company size and the selected level of support.