The choice shapes budget predictability, financial exposure, plan flexibility, access to claims data, and administrative workload. It also affects long-term costs. Self-funding is more common than many owners assume: KFF's 2026 survey found 71% of covered workers are in self-funded plans.
This article compares how each model works, what each costs, the trade-offs, and the factors that should drive your decision.
Key Takeaways
- Self-insured employers carry eligible claims risk; fully insured employers transfer it to a carrier.
- Fully insured plans offer steadier payments and simpler administration.
- Self-funding costs include claims, administration, network fees, stop-loss, and compliance, not just a premium.
- Reserves, group size, claims history, and risk tolerance should drive the choice.
- Level-funded plans sit in the middle, but they are still self-funded.
Self-Insured vs. Fully Insured Health Plans: Quick Comparison
| Factor | Self-insured | Fully insured |
|---|---|---|
| Claims and risk | Employer funds eligible claims, usually with stop-loss | Carrier assumes covered claims risk |
| Cost structure | Varies with claims; adds administration, network, stop-loss, compliance | Generally fixed premium; may change at renewal or with enrollment shifts |
| Plan design | More control over benefits and cost-sharing | Choose from the carrier's plan designs and networks |
| Data and administration | Richer claims data; needs a TPA or ASO provider | Carrier handles most administration; less direct data access |
| Typical fit | Sufficient reserves, stable enrollment, tolerance for variability | Simplicity, predictable budgets, limited exposure |
Muneris Benefits lists fully insured plans among its employee health insurance offerings, and it represents all major carriers in Virginia. That makes side-by-side comparison practical for employers in Virginia and West Virginia.
What Are Self-Insured and Fully Insured Health Plans?
Self-insured health plans
In a self-insured (self-funded) plan, the employer pays covered claims from its own funds instead of buying insurance to finance them. Employers rarely process those claims themselves. An administrative services only (ASO) arrangement or a third-party administrator (TPA) usually handles claims, networks, member support, and reporting.
Advantages
- Potential access to detailed claims data
- Greater plan-design flexibility
- Favorable claims years can produce a surplus
- More direct control over cost-management tactics
Disadvantages
- Claims expenses swing from month to month
- Cash reserves are needed
- High-cost claims create exposure
- Governance and compliance duties are heavier
What the costs include:
- Expected claims
- TPA fees
- Network access
- Stop-loss premiums
- Compliance expenses
- Reserves
Stop-loss coverage limits the downside. Specific stop-loss protects against one person's very high claims above an attachment point. Aggregate stop-loss responds when total eligible claims hit a plan-wide threshold.
Review these contract terms carefully:
- Attachment points
- Lasers (individual deductibles or exclusions for identified high-cost members)
- Run-in and run-out terms
- Exclusions and renewal conditions
An exclusion leaves you responsible for that claim. Stop-loss reimburses the employer; it does not become employee insurance.
Fully insured health plans
In a fully insured plan, the employer pays a premium and the carrier assumes responsibility for covered claims.
Advantages
- Payments are predictable during the policy term
- Little claims-risk exposure
- Simpler administration
- Established carrier networks and member support
Disadvantages
- Premiums include anticipated claims, administration, overhead, risk charges, taxes or fees, and profit
- A low-claims year doesn't directly benefit you
Renewals depend on enrollment, plan design, group size, underwriting rules, healthcare trends, and carrier pricing. The American Academy of Actuaries points to projected medical and drug claims plus administration, with drug spending a major driver.
Comparing costs honestly
Self-insurance is not automatically cheaper. Wakely's 2026 analysis notes favorable claims can create a surplus, while adverse claims create short-term funding pressure, especially for smaller groups. Don't confuse long-term savings with month-to-month cash volatility.
Compliance note
Both models face federal rules. ERISA generally keeps state benefit mandates from applying to self-funded plans, but federal disclosure, reporting, and fiduciary duties remain.
Virginia's State Corporation Commission says its mandates apply only to Virginia-issued policies, and West Virginia's insurance office places self-insured group plans under federal ERISA oversight. Verify current requirements with your advisor.
Self-Insured vs. Fully Insured: Which Is Better for Your Business?
Neither is universally better. Judge total cost, risk capacity, administrative resources, workforce makeup, and benefits strategy, not the premium alone.
When fully insured fits
- Predictable monthly budgeting is the top priority
- You want lower financial exposure
- Internal benefits expertise is limited
- You value straightforward administration and established carrier support
When self-insured fits
- Reserves are adequate
- Claims and enrollment data are credible
- You can tolerate variable expenses
- You want customized design
- You can oversee a TPA, stop-loss, and compliance duties
Size matters. KFF found self-funding at 25% of firms with 10-199 workers versus 85% at firms with 200 or more.
Employers between those size bands often weigh level funding as a practical middle path.
Level-funded plans as a middle path
Level funding gives fixed monthly payments that cover claims funding, administration, and stop-loss. KFF classifies it as self-funding with stop-loss, not fully insured coverage. In 2026, 38% of covered workers at firms with 10-199 workers were in level-funded plans.
Refund terms vary. Aetna's Funding Advantage product, for example, returns 50% of surplus at renewal, while UnitedHealthcare describes potential refunds only where law allows. Always confirm refund, renewal, underwriting, and state-availability terms.
Decision checklist
- Model cash flow under expected and worst-case claims.
- Review prior claims and employee demographics.
- Define desired benefits and network needs.
- Assess your administrative capacity.
- Plan employee communication.
- Price the cost of switching models.
Muneris Benefits helps Virginia and West Virginia employers compare funding options, manage healthcare costs, and design coverage around workforce needs and budgets. Its account managers also support billing, claims, and contract questions. To talk through your options, call (888) 686-3741.
Real-World Examples and Case Studies
Rubber & Accessories, a Lakeland, Florida employer, moved in 2020 from an ACA community-rated fully insured plan to a UnitedHealthcare level-funded plan.
According to UnitedHealthcare's case study, it received a 16% average surplus refund over two years, which it says helped avoid higher employee contributions.
Read that carefully. It is a carrier-reported case. A 16% refund is not a verified 16% cut in total benefit costs, and no dollar savings were independently measured.
The takeaway: this profile is a small employer facing community-rated renewals that wanted more cost visibility without a fully self-funded plan. Before changing models, evaluate your own:
- Claims history
- Reserves
- Plan goals
- Risk tolerance
Conclusion
Fully insured plans pay a fixed carrier premium for cost predictability and less claims responsibility. Self-insured plans accept greater financial risk in return for more control, claims data visibility, and flexibility to manage costs.
Compare total costs and operational realities, not just premiums. Get professional guidance before choosing a funding model, changing plan design, or moving to a self-insured or level-funded arrangement.
Frequently Asked Questions
What is the difference between self-insured and fully insured?
In a self-insured plan, the employer pays claims and carries the risk. In a fully insured plan, a carrier does. Fully insured costs are more predictable; self-insured plans offer more flexibility.
What does self-insured mean?
The employer funds eligible employee claims itself, often using a TPA for administration and stop-loss insurance to cap exposure.
What does fully insured mean?
The employer pays a premium to an insurance carrier, which assumes responsibility for covered claims under the policy.
Which is better: self-insured or fully insured?
It depends on reserves, workforce size, claims profile, administrative resources, risk tolerance, and your need for predictable costs or customization.
Is self-funded the same as self-insured?
Generally, yes. Both describe an employer-funded health plan. Hiring a third-party administrator doesn't change who funds the claims.
What is ASO in insurance, and is it the same as self-insured?
Administrative services only means a carrier or TPA performs administrative functions for an employer-funded plan. ASO supports self-insurance but isn't the funding model itself.
