FOR HRIS & PAYROLL

API‑first benefits infrastructure.

Stop letting your benefits partner damage your employee NPS. Phase 3 Benefits gives your platform an HSA and FSA experience with single sign-on, real-time eligibility, embedded investing, and a partner economics model that pays you for the book.

Talk to Partnerships Read the API docs

// Create an HSA account for a new employee
POST /v1/accounts
Authorization: Bearer p3_live_...

{
  "employee_id": "emp_8a3f",
  "plan_type": "hsa",
  "contribution": {
    "annual": 4150,
    "employer_match": 1500
  }
}

THE HRIS NPS PROBLEM

Your platform earned the employee. Don't lose that NPS to an HSA app stuck in 2010.

Phase 3 Benefits gives your platform an HSA and FSA experience with single sign-on, real-time eligibility, embedded investing, and a partner economics model that pays you for the book. The integration ships in days.

SSO, SCIM, real-time eligibility. Built so your engineers don't dread the integration scope call.
Co-branded employee surface. Members see your platform with our infrastructure underneath.
Revenue share. Tiered economics on admin and interchange.

// Create an HSA account for a new employee
POST /v1/accounts
Authorization: Bearer p3_live_...

{
  "employee_id": "emp_8a3f",
  "plan_type": "hsa",
  "contribution": {
    "annual": 4150,
    "employer_match": 1500
  }
}

API & DEVELOPER EXPERIENCE

Sandbox an HSA in an afternoon.

Public REST API

OpenAPI spec, versioned endpoints, public changelog.

Webhooks

Events for every account, card, transaction, and reimbursement.

SSO + SCIM

OIDC and SAML, with SCIM for member provisioning.

Reference integrations

Pre-built patterns for the top HRIS and payroll stacks.

"We built the API so your team can sandbox an HSA integration in an afternoon."

PARTNER PROGRAM

Built around the platforms our customers actually use.

Joint GTM

Co-marketing, named case study, and shared field motion.

Tiered economics

Revenue share on admin fees and interchange, paid monthly.

Dedicated channel lead

A single point of contact for product, integration, and BD.

See it in 30 minutes.

A real demo of the admin portal, the member app, and the integration story — built around your stack.

Book a Demo Talk to Sales