📚 99. [EN] PEO (Justworks / TriNet) vs In-House HRIS (Rippling / Gusto) Cost Calculator — 2026 Comprehensive Formula Guide, Statutory Benchmarks & FAQ
99. [EN] PEO (Justworks / TriNet) vs In-House HRIS (Rippling / Gusto) Cost Calculator is an institutional-grade interactive calculator engineered for PEO Per-Employee Administration Fee, Large-Group Health Plan Savings & Multi-State Compliance. Built on 2026 US federal/state statutory guidelines, IRS/SBA/CMS regulatory tables, and actuarial underwriting models, it delivers instant side-by-side scenario modeling with zero sign-up required.
1. Core Actuarial & Financial Methodology
Using your inputs for Full-Time Employees, PEO Monthly Fee per Emp ($), and Health Plan Savings per Emp ($), our client-side engine computes both baseline exposure and optimized outcomes using statutory multiplier 12.0. All calculations execute 100% locally in your browser with zero server-side PII retention.
2. Executive FAQ & Optimization Checklist
- How accurate are the 2026 benchmark assumptions? — Default values reflect current national medians and statutory caps; customize every parameter to match your exact contract or state jurisdiction.
- How do I compare Scenario A vs. Scenario B? — Scenario A models standard unoptimized rates, while Scenario B applies maximum statutory deductions, safe-harbor credits, or negotiated settlement multipliers.