Self-host it flat-fee. Or let us run it.
The HR and payroll platform built for every workforce-employment model — PEOs, ASOs, domestic EORs, staffing agencies, and CPA/accounting firms. License it once and self-host, or go fully managed — your call.
Platform Capabilities
Built for operators that compete on scale
Every feature was designed around the operational reality of running a workforce business — whether that's a PEO, an ASO, a domestic EOR, a staffing agency, or a CPA firm's client bureau — not bolted on after the fact.
Native Operational CRM
Case management, SLA tracking, escalation rules, AI-assisted triage, and a sales pipeline — all first-class, all included. No separate licensed product required.
AI Throughout
LLM-powered I-9 extraction, PTO compliance validation, case triage and drafting, an employee AI assistant (web + mobile) that takes confirmed actions — plus an MCP server so your own AI tools can query the platform.
Leave Compliance Validation
Validates every client leave plan against state statutory minimums at save time. FMLA, PFML, parental, and military leave auto-routed to legal review.
Onboarding & Offboarding
Structured checklists from offer to separation. LLM-assisted I-9, E-Verify, state-specific separation notices across 21 states, and migration adapters for 7 legacy systems.
Payroll Engine
In-house tax engine across all 50 states. Multi-state allocation, local tax resolution, NACHA ACH, garnishments — owned end-to-end, no third-party core.
Workers' Compensation
Class codes, carrier policies, claims, and premium computed from actual wages every payroll run — true pass-through, with audit-prep worksheets and automatic exposure re-checks on retroactive changes.
Self-Hosted Security
Schema-per-tenant isolation, AES-256 encryption, append-only audit logging. Your clients' data never leaves your environment — and you can audit the code yourself.
Proven, Not Promised
666,814 real-world records swept through the tax engine, to-the-cent golden tests on every bracket, continuously-tested tenant isolation, and a measured ~15-minute restore drill. Self-hosted means you can rerun all of it yourself — built with the same Lean Six Sigma discipline our founder spent eight years applying inside PEO operations.
The Model
How it works
We designed the commercial model to remove every reason to hesitate.
Low Risk Pilot
Run Stratum parallel to your current stack — no cutover, no commitment. On your infrastructure. We implement alongside your team from day one.
Platform License
One perpetual license fee — from $45,000 to $150,000 depending on your vertical (PEO, ASO, EOR, staffing, or CPA channel) — triggers only when you decide to switch. Our Founding Circle rate, ~30% off list and locked for life, is capped at one customer per vertical. On-prem, no recurring royalty, 200 employees or 20,000.
Implementation & Support
$150/hr for customization and support. Break-fixes are covered through the 90-day post-go-live warranty. Tax table updates via optional subscription.
Recently Shipped
Self-hosted doesn't mean standing still
Per-tenant SUI/SIT account numbers, wired straight into filing
Seven interactive, narrated product tours — no meeting required
NCCI experience-mod estimate on every sales quote
Ready to see it?
Let's talk about your stack.
We work with a limited number of implementation partners. If you're running a PEO, ASO, domestic EOR, staffing agency, or CPA firm and competing on employee count, this conversation is worth having.
Get in Touch