National PEO backed by the Paychex payroll infrastructure
Full-service PEO with dedicated HR support teams
Insperity has the edge in this comparison, particularly because of its dedicated HR team model and consistently high client satisfaction.
Side-by-Side Comparison
Oasis (Paychex PEO) Overview
Businesses already in the Paychex ecosystem or wanting enterprise payroll integration
Custom quote — competitive pricing for mid-size businesses
Insperity Overview
Mid-size businesses seeking dedicated HR teams and high-touch service
Custom quote — typically $150 to $200+ per employee per month
Our Verdict
Insperity has the edge in this comparison, particularly because of its dedicated HR team model and consistently high client satisfaction. Oasis (now Paychex PEO) is a strong choice for businesses already in the Paychex ecosystem who want seamless payroll integration. But for a business choosing a PEO without a pre-existing Paychex relationship, Insperity dedicated service model, independent status, and track record make it the stronger recommendation in 2026.
Choose Oasis/Paychex PEO if you are already using Paychex payroll products and want to add PEO co-employment services within the same ecosystem.
Choose Insperity if you want a dedicated HR team, high-touch service, and the reliability of one of the most established independent PEOs in the country.
Frequently Asked Questions
This comparison is editorially independent. Featured placements elsewhere on PEO Authority are paid visibility — they do not influence comparison verdicts or analysis. All information is based on publicly available data and IRS CPEO certification records.