Self-Funded vs. Fully Insured Health Plans: What’s the Difference?
The main difference between a self-funded and a fully insured health plan is who pays the medical claims and who carries the financial risk. In a fully insured plan, the employer pays a fixed premium to an insurance carrier, and the carrier pays the claims. In a self-funded plan, the employer pays the claims directly from its own funds and carries the risk — usually with stop-loss insurance to limit exposure to unusually large claims. The two models are also regulated differently: fully insured plans fall under state insurance rules, while self-funded plans are governed by the federal ERISA law.
Self-Funded vs. Fully Insured: Side-by-Side Comparison
Here is how the two models compare across the factors that matter most:
| Factor | Fully Insured | Self-Funded |
|---|---|---|
| Who pays the claims | The insurance carrier | The employer, from its own funds |
| Who carries the financial risk | The carrier | The employer (with stop-loss protection) |
| What the employer pays | A fixed premium | Actual claims + administration + stop-loss premium |
| Cost predictability | High (fixed premium) | Variable, with more visibility into spending |
| Primary regulation | State insurance laws | Federal law (ERISA) |
| Most common among | Smaller employers | Larger employers, and increasingly smaller ones |
What Stays the Same in Both Plans?
For employees, most of the day-to-day experience is the same in both models. What usually does not change:
- The provider network you use
- The ID card you carry and how you present it at appointments
- How copays, deductibles, and cost-sharing work
- Many employee protections, including preventive care requirements and dependent coverage provisions, may continue to apply depending on plan structure and applicable regulations.
Specific benefits always depend on your plan documents, so those are the source of truth in either model.
What’s Different for Employees?
The clearest difference for employees shows up if a claim is denied. In a fully insured plan, an appeal can go through the carrier and, if needed, a state insurance department. In a self-funded plan, appeals follow the federal ERISA process, and questions go to the plan administrator and the U.S. Department of Labor’s EBSA rather than a state regulator.
For example, an employee in a self-funded plan who wants to dispute a denied claim would follow the plan’s ERISA appeal steps instead of contacting their state insurance department. According to KFF employer health benefits data, approximately 67% of covered workers are enrolled in self-funded plans.
For a full explanation of how self-funded plans work, see Self-Funded Health Plans Explained →. You can also read more about what a third-party administrator (TPA) does → and how stop-loss insurance works →.
Frequently Asked Questions
Is self-insured the same as self-funded?
Yes. “Self-insured” and “self-funded” describe the same arrangement and are used interchangeably.
Does the type of plan change the care I receive?
Not by itself. The funding model determines who pays claims and which rules apply, not the care you receive. Covered benefits are set by your plan documents in either model.
Why does my insurance card show a major company’s name if my plan is self-funded?
Because that company is acting as the plan’s third-party administrator (TPA), processing claims and managing the network on the employer’s behalf. The name reflects who administers the plan, not necessarily who pays the claims.
Which type of plan is more common?
Self-funded. As of 2025, 67% of U.S. workers with employer coverage are in self-funded plans, including 80% at large firms (KFF, 2025).
Published by LifeX Research, a workforce wellness and population health research organization. This article is for general educational purposes only and is not legal, medical, or insurance advice. For questions about your specific plan, contact your plan administrator.
About LifeX Research Corporation
LifeX Research Corporation is a health data research organization that analyzes real-world health trends, behavioral signals, and population health patterns. The organization operates in connection with an ERISA-governed, self-funded employee benefit plan and does not sell, market, broker, or underwrite health insurance.
