Complete Employer Guide
Self-Funded Health Plans
Self-funding is the most powerful cost-control lever available to mid-size and large employers. When structured correctly, it gives you full claims visibility, plan design flexibility, and the ability to keep savings that would otherwise go to an insurance carrier. This hub covers everything — from the basics to advanced strategies.
Everything in this guide
Each topic below is a standalone deep-dive. Start anywhere — every page links back to this hub and forward to related tools and vendor comparisons.
How self-insured plans work, who they're for, and the core mechanics every employer should understand.
Side-by-side comparison of cost structure, risk, flexibility, and data access.
The hybrid path between fully insured and self-funded — predictable monthly costs with claims data access and potential surplus refunds.
Specific vs. aggregate coverage, attachment points, lasers, and how to structure your protection.
What TPAs do, how to evaluate them, and why your TPA choice drives plan performance.
How PBMs work, spread pricing, rebate transparency, and how to negotiate a better contract.
ERISA preemption, fiduciary duties, SPD requirements, and the compliance obligations every self-funded employer must meet.
Group captive and single-parent captive structures for employers ready to share risk.
Paying claims at a percentage of Medicare instead of inflated network rates.
Employer-sponsored DPC memberships that reduce ER visits and specialist referrals.
Directing high-cost procedures to top-quality facilities to improve outcomes and reduce costs.
Steering employees to lower-cost, equally effective care settings.
Estimate your potential savings from moving to a self-funded plan.
Is your organization ready to self-fund? Answer 10 questions to find out.
Step-by-step guide to evaluating, implementing, and managing a self-funded plan — from feasibility through year-one operations.
Answers to the most common employer questions about self-funded health plans.
Compare TPAs, PBMs, stop-loss carriers, and captive managers side by side.
How we evaluate self-funding readiness, source benchmark data, profile TPAs, and apply AI analysis — with full transparency on methods and limitations.
Why self-funding changes everything
Full claims data ownership
Fully insured employers are flying blind. Self-funded employers own every claim — who's using what, where costs are rising, and exactly where to intervene.
Keep the savings
In a good claims year, the surplus stays with you — not the carrier. Over a 3–5 year horizon, this compounds into significant cost advantages.
ERISA preemption
Self-funded ERISA plans are exempt from state insurance mandates, giving you plan design flexibility that fully insured plans simply cannot match.
How a self-funded health plan actually works
In a fully insured plan, the employer pays a fixed monthly premium to an insurance carrier. The carrier collects premiums from all its policyholders, pools the risk, pays claims, and keeps any profit. The employer never sees individual claim data and has no leverage over plan design beyond what the carrier allows.
In a self-funded plan, the employer is the insurer. You fund a claims account — often called a benefit bank or trust — and pay employee medical claims directly as they are adjudicated. A third-party administrator (TPA) handles the operational work: processing claims, managing the network, handling member services, and producing utilization reports. You own the data. You own the risk. And in a good claims year, you keep the savings.
To protect against catastrophic claims, self-funded employers purchase stop-loss insurance. Specific stop-loss covers individual claims above a set deductible — typically $75,000 to $200,000 per person per year. Aggregate stop-loss caps total plan claims at a percentage of expected costs, usually 115–125%. Together, these two layers define the employer's maximum financial exposure.
Processes claims, manages network access, handles member services, and produces utilization data on your behalf.
Reimburses claims that exceed your specific deductible (per person) or aggregate threshold (total plan).
Manages the pharmacy benefit — formulary, network, rebate negotiations, and specialty drug programs.
The employer's role is to select and oversee these vendors, fund the claims account, and make plan design decisions. Done well, this structure gives you more control, more data, and lower long-term costs than any fully insured arrangement.
Level-funding: the on-ramp to self-funding
Best for employers with 25–150 employees who want claims data access and potential savings without full cash-flow volatility
Level-funded plans are a hybrid structure that sits between fully insured and traditionally self-funded. The employer pays a fixed monthly amount — covering expected claims, stop-loss premiums, and administrative fees — which looks and feels like a premium. But unlike a true premium, this money funds a claims account. At year end, if actual claims come in below the funded amount, the employer receives a surplus refund. If claims exceed the funded amount, stop-loss coverage kicks in.
The strategic value of level-funding is not just the potential refund — it's the claims data access. Fully insured employers cannot see their own claims. Level-funded employers can. That data is the foundation for every cost-containment strategy: identifying high-cost claimants, evaluating pharmacy spend, benchmarking utilization, and building the case for a full self-funding transition.
Level-funding advantages
- Predictable monthly cash outflow
- Claims data access and ownership
- Potential year-end surplus refund
- Stop-loss protection included
- Easier underwriting than traditional self-funding
- Path to full self-funding with 1–2 years of data
Watch out for
- Monthly funded amount may exceed actual claims cost
- Not all level-funded products offer true claims transparency
- Surplus refund terms vary widely — read the contract
- Some carriers use level-funding as a marketing label without real self-funding mechanics
- Renewal underwriting can be aggressive after a bad claims year
ERISA, fiduciary duty, and plan document requirements
Self-funded plans are ERISA plans — and that comes with real legal obligations
Self-funded employer health plans are governed by the Employee Retirement Income Security Act (ERISA). ERISA preempts state insurance law, which is why self-funded plans can offer benefits that fully insured plans cannot — they aren't subject to state-mandated benefit requirements. But ERISA also imposes significant fiduciary obligations on the employer as plan sponsor.
As a plan fiduciary, the employer must act solely in the interest of plan participants and beneficiaries, with the care and prudence of a knowledgeable person. This is not a formality. Courts have held employers liable for failing to monitor vendor fees, failing to negotiate reasonable contracts, and failing to act on information suggesting the plan was being mismanaged. The Consolidated Appropriations Act of 2021 (CAA) significantly expanded these obligations — including requirements to disclose broker and consultant compensation, attest annually that the plan has no gag clauses, and ensure the plan has access to machine-readable files for price transparency.
Core ERISA compliance requirements
- Summary Plan Description (SPD): Must be distributed within 90 days of eligibility; updated every 5 years or when material changes occur
- Summary of Benefits and Coverage (SBC): Required at enrollment, renewal, and upon request; standardized 4-page format
- Form 5500 annual filing: Required for plans with 100+ participants; due 7 months after plan year end
- COBRA administration: Qualifying event notices within 14 days; election period of 60 days
- HIPAA privacy and security: Plan must have a privacy notice and business associate agreements with vendors
- Mental Health Parity (MHPAEA): Mental health and substance use disorder benefits must be no more restrictive than medical/surgical benefits
CAA 2021 transparency requirements
- Broker compensation disclosure: Brokers and consultants must disclose all direct and indirect compensation over $1,000
- Gag clause prohibition attestation: Annual attestation to CMS that the plan has no gag clauses restricting cost and quality data access
- Machine-readable files: In-network rates and out-of-network allowed amounts must be publicly posted
- Prescription drug data reporting: Annual RxDC report to CMS on drug spending, rebates, and top drugs by cost and utilization
- Advanced EOB: Good-faith cost estimate and advanced explanation of benefits before scheduled services (implementation pending)
- ID card requirements: Deductible and out-of-pocket maximum must appear on member ID cards
Cash flow and financial mechanics
Understanding how money moves in a self-funded plan — and how to manage the variability
The most common concern employers raise about self-funding is cash flow. In a fully insured plan, you pay a predictable premium every month. In a self-funded plan, you pay actual claims — and claims are lumpy. A month with no hospitalizations looks very different from a month with a NICU admission or a complex surgery.
The solution is a claims reserve — a funded buffer that absorbs month-to-month variability. Most advisors recommend maintaining a reserve equal to 2–3 months of expected claims. This is separate from the stop-loss coverage that protects against catastrophic individual claims or aggregate plan overruns.
The TPA adjudicates claims and submits a weekly or bi-weekly funding request. The employer funds the claims account; the TPA pays providers. Turnaround from service to payment is typically 14–30 days for clean claims.
When a specific claim exceeds the deductible, the employer pays the full claim first, then submits for reimbursement. Stop-loss carriers typically reimburse within 30–60 days of receiving a complete claim submission.
Employees receive care in December but the claim isn't submitted until February. This "IBNR" liability must be accounted for when evaluating plan performance or transitioning carriers. Your TPA can provide an IBNR estimate.
The long-term financial case
Over a 3–5 year horizon, self-funded employers consistently outperform fully insured peers on cost. The mechanism is simple: in good claims years, you keep the surplus instead of subsidizing the carrier's profit margin and other policyholders' losses. In bad claims years, stop-loss limits your exposure. The actuarial math favors self-funding for any employer with sufficient size to absorb short-term volatility.
How to implement a self-funded plan: the roadmap
A realistic timeline from feasibility analysis through year-one operations
Feasibility analysis (months 1–2)
- Pull 24–36 months of claims data from your current carrier (use CAA rights if they resist)
- Conduct a self-funding readiness assessment — group size, industry, claims history, cash reserves
- Model expected claims cost, stop-loss premium, TPA fees, and required reserve
- Compare projected self-funded cost to fully insured renewal
- Identify level-funding as an intermediate option if full self-funding is premature
Vendor selection (months 2–4)
- Issue RFP to 3–5 TPAs; evaluate network access, reporting capabilities, and fee transparency
- Solicit stop-loss quotes from multiple carriers; compare attachment points, lasers, and contract terms
- Evaluate PBM options — consider carving out pharmacy from the TPA bundle for better economics
- Engage an independent benefits advisor with disclosed compensation (CAA requirement)
- Review all vendor contracts for gag clauses, data ownership provisions, and termination rights
Plan design and documentation (months 3–5)
- Draft the Plan Document and Summary Plan Description (SPD) with ERISA counsel
- Design the benefit structure — deductibles, copays, out-of-pocket maximums, and network tiers
- Establish the claims trust account and funding mechanism
- Set up COBRA administration (in-house or third-party)
- Implement HIPAA privacy policies and business associate agreements
Launch and year-one operations (months 5–12)
- Communicate the transition to employees — emphasize benefit continuity, not the funding mechanism
- Monitor claims weekly; review utilization reports monthly
- Identify high-cost claimants for case management and disease management programs
- Track stop-loss claims and reimbursement timing
- Begin building the data foundation for year-two plan design decisions
Frequently asked questions
What is a self-funded health plan?
A self-funded (self-insured) health plan is one where the employer directly pays employee medical claims rather than paying a fixed premium to an insurance carrier. The employer assumes the financial risk of claims, typically protected by stop-loss insurance for catastrophic events. A third-party administrator (TPA) handles claims processing and administration.
How many employees do you need to self-fund?
Most benefits advisors recommend self-funding for employers with 100 or more employees, though some groups as small as 50 lives can self-fund successfully with the right stop-loss structure and TPA. Larger groups (200+) have more predictable claims experience and typically see the greatest savings. Employers with 25–100 employees are often better served by level-funded plans as a first step.
What is a level-funded health plan?
A level-funded plan is a hybrid between fully insured and self-funded. The employer pays a fixed monthly amount covering expected claims, stop-loss premiums, and administrative fees. At year end, if actual claims come in below the funded amount, the employer receives a surplus refund. Level-funding gives smaller employers (25–150 lives) access to claims data and potential savings without the full cash-flow variability of traditional self-funding.
What is stop-loss insurance in a self-funded plan?
Stop-loss insurance protects self-funded employers from catastrophic claims. Specific stop-loss covers individual claims above a set deductible (e.g., $100,000 per person). Aggregate stop-loss caps total plan claims at a percentage of expected costs (typically 115–125%). Without stop-loss, a single catastrophic claim could devastate a self-funded plan.
What ERISA obligations apply to self-funded health plans?
Self-funded health plans are governed by ERISA, which imposes fiduciary duties on plan sponsors. Key obligations include: distributing a Summary Plan Description (SPD) within 90 days of eligibility; filing Form 5500 annually for plans with 100+ participants; complying with COBRA, HIPAA, and MHPAEA; and meeting CAA 2021 transparency requirements including broker compensation disclosure and annual gag clause prohibition attestation.
How does cash flow work in a self-funded health plan?
The employer funds a claims account and pays actual claims as they are adjudicated by the TPA — typically on a weekly or bi-weekly cycle. Unlike fully insured plans with fixed premiums, self-funded employers pay actual claims plus administrative fees. Most employers maintain a claims reserve of 2–3 months of expected claims to buffer month-to-month variability. Stop-loss reimbursements for large claims typically arrive 30–60 days after the claim is paid.
What is the difference between a TPA and an insurance carrier?
An insurance carrier both underwrites risk and administers claims. A TPA only administers claims — processing, paying, and managing the plan on behalf of the employer. In a self-funded plan, the employer is the risk-bearer; the TPA is the administrator. This separation gives employers more control, more data, and more leverage over costs.
Can small employers self-fund?
Small employers (under 50 employees) face significant volatility risk in self-funded plans. Level-funded plans — a hybrid between fully insured and self-funded — are often a better starting point for small groups. They provide claims data transparency and potential surplus refunds with more predictable monthly costs. Employers with 50–100 employees should model both options carefully before deciding.
Nonprofit saved $290,000 over two years after moving to self-funding
A 130-employee Arkansas nonprofit used CAA transparency data to validate their claims experience, then transitioned from fully insured to level-funded to fully self-funded over two plan years — improving benefits while cutting costs.
Read the case studyManufacturer saved $380,000 in year one after moving to self-funding
A 200-employee Northwest Arkansas manufacturer transitioned to a group medical captive, gaining full claims visibility and eliminating spread pricing — saving $380K vs. the prior carrier's renewal quote.
Read the case studyFrom the blog
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Read article Level FundingLevel-Funded Health Plans: The Smart Middle Ground or Just a Stepping Stone?
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Read article ERISA & ComplianceERISA Litigation Is Expanding — and Plan Sponsors Should Pay Attention
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Read article CaptivesGroup Medical Captives: What They Are and Whether Your Company Should Consider One
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Read articleReady to explore self-funding for your organization?
Start with the readiness assessment to see if self-funding makes sense for your group size, industry, and risk tolerance.