Fully Insured vs. Self-Funded Health Plans: Which Is Right for Your Small Business?
Choosing between a fully insured and a self-funded (self-insured) health plan is one of the most consequential benefits decisions a small business can make. Both structures have real cost and compliance implications — and both are often outperformed by a third option: a Section 125 Cafeteria Plan funded by FICA tax savings.
What Is a Fully Insured Health Plan?
A fully insured health plan is a traditional group health insurance policy purchased from a carrier such as BCBS, Aetna, Cigna, or UnitedHealthcare. The employer pays a fixed monthly premium to the carrier, and the carrier assumes all financial risk for employee claims.
How Fully Insured Plans Work
The employer selects a plan design, pays monthly premiums, and the insurer manages claims, provider contracts, and compliance filings. Premium rates are set annually by the carrier based on the employer's industry, workforce demographics, and local market conditions.
Fully Insured Plan Costs
Fully insured premiums for small businesses typically range from $400 to $800 per employee per month for employer-sponsored coverage. Small groups (under 50 employees) generally face higher per-employee costs than large groups because they lack negotiating leverage with carriers.
Fully Insured Plan Pros and Cons
Pros:
- Predictable monthly costs
- Carrier handles all compliance and claims administration
- ACA-compliant networks and benefits
Cons:
- Premium increases of 5–15% annually are common
- No claims data visibility or cost transparency
- Small groups pay the highest per-employee rates
- Limited customization of plan design
What Is a Self-Funded Health Plan?
A self-funded (or self-insured) health plan is one where the employer directly pays employee medical claims rather than paying premiums to an insurance carrier. The employer bears the financial risk of claims up to a stop-loss insurance limit.
How Self-Funded Plans Work
The employer sets aside claims reserves, contracts with a Third Party Administrator (TPA) for claims processing, and purchases stop-loss insurance to cap catastrophic exposure. Premium equivalents are deposited into a claims trust rather than sent to a carrier.
Self-Funded Plan Costs
Self-funded plan costs vary significantly based on workforce demographics and claims experience. Average cost per employee is similar to or slightly below fully insured plans, but variance is high. Stop-loss insurance, TPA fees, and network access fees add administrative costs.
Self-Funded Plan Pros and Cons
Pros:
- Access to claims data for cost management
- Potential savings in low-claims years
- Exempt from state insurance mandates (ERISA-governed)
- More flexible plan design
Cons:
- Financial risk from high-claims years
- Complex administration requiring TPA relationships
- Stop-loss insurance adds cost and complexity
- Generally requires 50+ employees for viability
Fully Insured vs. Self-Funded: Key Differences
| Factor | Fully Insured | Self-Funded |
|---|---|---|
| Risk Bearer | Insurance carrier | Employer |
| Minimum Size | 1+ employee | Typically 50+ |
| Regulatory Framework | State insurance law + ACA | ERISA (federal) |
| Premium Predictability | High | Low |
| Claims Transparency | None | Full |
| Administrative Complexity | Low | High |
The Section 125 Alternative for Small Businesses
Most small businesses — particularly those with under 50 employees — find both fully insured and self-funded plans prohibitively expensive. A Section 125 Cafeteria Plan offers a third path: employer-sponsored healthcare funded entirely by FICA payroll tax savings with no direct employer premium outlay.
How Section 125 Compares
A Section 125 Cafeteria Plan converts mandatory FICA payroll tax obligations into a healthcare funding mechanism. Employer FICA savings of $91.81 per employee per month fund virtual care, prescriptions, dental, vision, and mental health benefits at $0 net employer cost — compared to $400–$800/month for a fully insured plan.
Which Plan Is Right for Your Business?
- Under 5 employees: WoW Health Plans — no minimum, affordable membership-based care
- 5–49 employees: Section 125 Cafeteria Plan at $0 employer cost
- 50+ employees: Combination of Section 125 + HealthShare or self-funded depending on claims data
- Businesses with existing group coverage: Layer Section 125 on top to reduce employee premium costs
Frequently Asked Questions
Can small businesses self-fund their health plans?
Self-funding is technically available to any employer, but it is generally impractical below 50 employees due to catastrophic claims exposure and administrative complexity. Section 125 is typically the better cost-control tool for small businesses.
Is fully insured or self-funded better for controlling costs?
For businesses with 50+ employees and a healthy workforce, self-funded plans can reduce costs in favorable years. For businesses under 50 employees, Section 125 typically delivers the most consistent savings — $91.81/employee/month in employer FICA savings — regardless of claims experience.
Do employees notice the difference between plan types?
Employees primarily notice their benefits, not the underlying funding mechanism. Whether fully insured, self-funded, or Section 125-funded, employees care about network access, prescription coverage, and out-of-pocket costs.
Schedule a free consultation with Summit Health Benefits to model how a Section 125 Cafeteria Plan compares to your current fully insured or self-funded plan costs.
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