Is My Health Plan Self-Funded? How to Tell (and Why It Matters)
About 63% of covered workers are in self-funded employer plans, and most don't know it. Here are five concrete ways to tell, from Summary Plan Description language to the Form 5500 filing, and why the answer decides which appeal rights you have.
Your employer plan is self-funded if your employer pays the medical claims out of its own money and the insurance company is only a third-party administrator (TPA) that processes them. It is fully-insured if the carrier bears the risk and pays the claims. You cannot tell from the logo on your ID card, both look identical. The five reliable checks are: (1) read the Summary Plan Description for 'self-funded,' 'self-insured,' or 'administered by' rather than 'insured by'; (2) look for a Form 5500 filing (self-funded ERISA plans usually file one); (3) note the employer's size (large employers self-fund far more often); (4) check for a stop-loss or 'administrative services only / ASO' reference; and (5) simply ask HR or the plan administrator in writing. The answer matters because self-funded plans are governed by federal ERISA rules and federal external review, while fully-insured plans add state insurance protections.
It is one of the most common and most consequential points of confusion in American health coverage: whether the plan behind your ID card is self-funded or fully-insured. The card looks the same either way, and the customer-service line rarely volunteers the answer. Yet the answer decides which body of law protects you when a claim is denied, whether your state's insurance department can help, where you could ultimately sue, and which external-review process applies. In KFF's 2024 Employer Health Benefits Survey, 63% of covered workers were in self-funded plans (79% at large firms), and the great majority have never been told. This guide gives you five concrete ways to find out and explains why it changes your appeal strategy. It is general information, not legal advice.
What 'self-funded' actually means
In a self-funded (or self-insured) plan, your employer takes on the financial risk of the medical claims. The company pays the bills from its own funds and typically hires an insurance carrier only to administer the plan, process claims, run the provider network, and handle appeals, under an 'administrative services only' (ASO) arrangement. The carrier's name is on the card, but it is not the insurer; it is the administrator.
In a fully-insured plan, the employer buys a group insurance policy and pays premiums, and the carrier takes on the risk: if claims exceed premiums, the carrier absorbs the loss. Here the carrier really is the insurer, and a state-regulated insurance product is being sold.
Many self-funded employers buy 'stop-loss' insurance to cap their exposure to very large claims, but stop-loss protects the employer, not you, and does not make the plan fully-insured. The plan is still self-funded, and still governed by ERISA's federal rules rather than state insurance law.
Five ways to tell
No single check is definitive on its own, but together they give a confident answer. Start with the Summary Plan Description, it is the most direct source.
| Check | Points to self-funded | Points to fully-insured |
|---|---|---|
| Summary Plan Description wording | 'self-funded,' 'self-insured,' 'administered by [carrier],' 'ASO' | 'insured by [carrier],' 'group policy,' 'certificate of insurance' |
| Form 5500 filing | Employer files a Form 5500 for the health plan (searchable on DOL's site) | Small plans may be exempt; a policy is referenced instead |
| Employer size | Large employer (hundreds or thousands of workers) | Small employer (often under 50-100 workers) |
| Stop-loss / ASO language | Mentions stop-loss insurance or third-party administrator | No stop-loss; the carrier is the insurer |
| State-mandate references | Silent on state-mandated benefits; cites ERISA / federal law | References your state's insurance code and mandates |
Check 1: read the Summary Plan Description
Every ERISA plan must give participants a Summary Plan Description (SPD), and you have the right to request it from the plan administrator. Scan it for the funding language. Phrases like 'the Plan is self-funded,' 'self-insured,' 'benefits are paid from the general assets of the Employer,' or 'claims are administered by [carrier] under an administrative services agreement' signal self-funding. Language like 'benefits are insured under a group policy issued by [carrier]' or a bound 'certificate of insurance' signals fully-insured.
If your SPD is silent or ambiguous, do not guess, move to the other checks and, if needed, ask in writing.
Check 2: look for a Form 5500
Larger ERISA welfare plans file an annual Form 5500 with the Department of Labor, and these filings are public. The DOL's EFAST2 filing-search tool and the agency's Form 5500 datasets let you search by employer name. A health plan with its own Form 5500, especially one whose schedules describe benefits as self-funded, is a strong indicator. Very small plans can be exempt from filing, so the absence of a Form 5500 is not proof of anything by itself.
Check 3 and 4: employer size and ASO / stop-loss clues
Self-funding rises sharply with employer size. Per KFF's 2024 survey, 79% of covered workers at large firms were in self-funded plans, versus a small minority at the smallest firms. So a large or very large employer tilts strongly toward self-funded; a small local employer tilts toward fully-insured.
Plan documents that mention a 'third-party administrator,' an 'administrative services only (ASO) agreement,' or 'stop-loss coverage' are describing the machinery of a self-funded plan. A document that reads like an insurance policy, with premiums, a policy number, and a certificate of coverage, points to fully-insured.
Check 5: just ask, in writing
The most reliable step is often the simplest: ask your HR department or plan administrator, 'Is our health plan self-funded or fully-insured, and who is the plan administrator?' Put it in writing (email is fine) so you have a record. There is nothing sensitive about the question, benefits staff answer it routinely, and the answer is not confidential.
Level-funded plans: the hybrid that confuses everyone
A growing number of small and mid-sized employers use 'level-funded' plans, and they are a frequent source of confusion. A level-funded plan is technically self-funded: the employer pays a fixed monthly amount that bundles claims funding, administration, and stop-loss insurance, and any surplus may be partially refunded at year end. Because the employer bears the underlying claims risk (up to the stop-loss attachment point), a level-funded plan is generally treated as self-funded and governed by ERISA's federal rules, not state insurance law.
The practical consequence is the same as any other self-funded plan: your appeal runs on the federal ERISA track, and external review goes through the federal process rather than a state program. If your employer is small but your plan documents mention 'level-funded,' 'stop-loss,' or an 'administrative services' arrangement, do not assume it is fully-insured. Confirm with the Summary Plan Description or by asking HR, and treat it as self-funded unless the documents clearly describe a state-regulated group insurance policy.
Why the answer changes your appeal
Once you know the funding type, you know which rulebook governs your denial. If the plan is self-funded, ERISA and its regulation (29 CFR 2560.503-1) control almost everything, your state insurance department generally cannot order the plan to pay, external review runs through the federal process, and any lawsuit is a federal ERISA suit. If the plan is fully-insured, you keep the federal floor and add state insurance protections: state-mandated benefits, a state external-review program, and, in some states, the ability to pursue bad-faith claims.
Practically, self-funded claimants should lean hard on the federal procedural levers, the document-and-criteria demand, full and fair review, deemed exhaustion, and federal external review, and build a meticulous administrative record. Fully-insured claimants have those same federal tools plus their state's consumer-assistance and insurance-department resources.
Frequently asked questions
Can I tell from my insurance card whether the plan is self-funded?
No. The ID card shows the carrier that administers the plan, and it looks identical whether the plan is self-funded or fully-insured. You have to check the Summary Plan Description, the Form 5500, or ask HR.
Does stop-loss insurance mean my plan is fully-insured?
No. Stop-loss insurance protects the employer from catastrophic claims; it does not sell coverage to employees. A plan with stop-loss is still self-funded and still governed by ERISA's federal rules rather than state insurance law.
Where do I find my employer's Form 5500?
Form 5500 filings are public. You can search the Department of Labor's EFAST2 filing-search system by employer name. A health plan that files its own Form 5500, particularly with schedules describing self-funded benefits, is a strong sign of self-funding, though the smallest plans may be exempt from filing.
My employer is small. Is my plan probably fully-insured?
Statistically more likely, yes, self-funding is far more common at large firms. But size is only one clue. Some small employers self-fund through pooled arrangements, so confirm with the Summary Plan Description or by asking HR before you rely on it.
Why does it matter for a denied claim?
Because it determines your rights. Self-funded plans follow federal ERISA rules and federal external review and are sued in federal court; fully-insured plans add state insurance protections and a state external-review program. The lever you reach for first depends on the answer.
Is my HR department required to tell me?
You are entitled to your Summary Plan Description, which describes how the plan is funded and who administers it. Most HR departments will also simply answer the question directly. If you cannot get a clear answer, request the SPD in writing from the plan administrator.
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