Self-Funded vs. Fully Insured Plans: What Providers Must Check

Published October 30, 2026

TL;DR

  • A fully insured plan is an insurance policy the employer buys from a carrier, and the carrier pays claims. A self-funded plan pays claims from the employer's own funds, often with a carrier or third-party administrator processing them under the same familiar brand.
  • Most covered workers are in self-funded plans. KFF's 2026 Employer Health Benefits Survey found 71% of covered workers enrolled in self-funded plans, including 85% at firms with 200 or more workers.
  • Funding type decides which rules apply. ERISA generally preempts state insurance law for self-funded plans, so state prompt pay laws, state benefit mandates and state external review usually reach only fully insured coverage, while the federal No Surprises Act applies to both.
  • Capture the funding type during verification, alongside the payer and plan name, because it changes how claims follow-up, disputes and appeals should be handled later.

Two patients present cards from the same national carrier, with the same logo and the same claims address. One card represents an insurance policy the carrier underwrites and the state regulates. The other represents an employer that pays its own claims and hired the carrier to run them. On the day of the visit they look identical, and in a payment dispute three months later they are governed by different law.

Most guides to self-funded and fully insured plans are written for employers choosing a plan. This one is for the provider side: benefits verification, billing and denial teams who need to know which rules will apply when a claim stalls.

This article provides general information, not legal advice. Requirements vary by plan, jurisdiction, and applicable law.

The two models in one paragraph each

In a fully insured plan, the employer pays premiums to an insurer, and the insurer takes on the responsibility for paying claims. The Department of Labor's 2026 report to Congress on self-insured plans notes that states have jurisdiction over the issuers that provide fully insured coverage, which is what brings state insurance law into play.

In a self-funded, or self-insured, plan the employer pays covered health expenses directly as claims are incurred. HealthCare.gov's glossary describes it as a plan where the employer collects premiums from enrollees and takes on the responsibility of paying claims, and notes that such employers can contract for insurance services such as enrollment, claims processing and provider networks. That last point is why the two models are easy to confuse: a self-funded plan frequently runs on a carrier's network, card design and claims system.

Most commercial patients are in self-funded plans

Self-funding is not a niche arrangement. KFF's 2026 Employer Health Benefits Survey found that 71% of covered workers, including 25% at smaller firms (10 to 199 workers) and 85% at firms with 200 or more workers, are enrolled in self-funded plans. KFF describes the 71% as similar to the 67% it reported in 2025.

Smaller employers add a third category. KFF found that 38% of covered workers at smaller firms are in level-funded plans. KFF notes that these policies are sold as self-funded plans, "so they generally are not subject to state requirements for insured plans." A small group that looks insured may therefore be self-funded for regulatory purposes. KFF's level-funded and self-funded figures overlap, so they should not be added together.

Why the funding type changes the rules

The difference comes from ERISA's preemption clause. Section 514 of ERISA, at 29 U.S.C. 1144(a), supersedes state laws insofar as they relate to employee benefit plans. A savings clause preserves state laws that regulate insurance, and a deemer clause says an employee benefit plan shall not be deemed an insurance company for purposes of state insurance law.

The Supreme Court explained the result in FMC Corp. v. Holliday in 1990: self-funded ERISA plans are exempt from state regulation insofar as that regulation relates to the plans, while if a plan is insured, a state may regulate it indirectly through regulation of its insurer. For providers, that means a state law that protects them on an insured claim may simply not apply to the self-funded claim next to it. Plans that are not ERISA plans, such as government and church plans, follow their own rules and are outside this comparison.

What changes for providers, side by side

IssueFully insured planSelf-funded ERISA plan
State prompt pay lawGenerally appliesGenerally does not apply
State benefit mandatesApply through the insurerGenerally do not apply
External reviewState process if it meets federal minimum standards; otherwise federalFederal process, unless the plan is bound by or elects a state process
No Surprises ActAppliesApplies
State surprise billing lawApplies where the state law reaches the coverageOnly if the plan has opted in, where the state allows it
ERISA claims and appeal rulesApply to ERISA plansApply

Treat the table as a starting point. Exact outcomes depend on the state, the plan and the services involved.

Prompt pay

State prompt pay laws are one of the most useful tools in commercial claims follow-up, and they usually stop at self-funded plans. The Texas Department of Insurance states that its prompt pay laws "are not applicable to self-funded ERISA plans," along with several other plan types. The Illinois Department of Insurance says state laws, including the Prompt Pay Law, "do not apply to self-insured employers and health & welfare benefit plans." Our guide to prompt pay laws explains how the clean-claim clock works where it does apply.

Appeals and external review

The Department of Labor's claims procedure regulation, 29 CFR 2560.503-1, applies to ERISA plans whether they are insured or self-funded. It gives claimants at least 180 days after an adverse benefit determination to appeal, requires denial notices to state the specific reasons and the plan provisions relied on, and sets decision deadlines such as 15 days for pre-service claims and 30 days for post-service claims. A provider is not automatically the patient's representative in that process: the regulation permits a health care professional with knowledge of the patient's condition to act as authorized representative for urgent care claims, and the Department of Labor's FAQ says an assignment of benefits is typically not a grant of authority to pursue an appeal on the claimant's behalf.

External review is where funding type matters. Under 29 CFR 2590.715-2719, a self-insured plan uses a state external review process only if that process applies to and binds the plan, for example because it is not preempted by ERISA. If a state has chosen to open its process to plans not otherwise subject to it, the plan may choose either the state or the federal process. Otherwise the federal external review process applies.

Surprise billing

The No Surprises Act applies to both. CMS's overview of its consumer protections lists employment-based group health plans, "both self-funded and fully insured," among the coverage it reaches. State surprise billing laws are different: CMS's guidance says a state will not be able to enforce its surprise billing protections against a self-insured group health plan unless the plan has opted into the state's law. CMS's IDR applicability chart (current as of January 11, 2023) listed six states that allow self-insured plans to opt in (Georgia, Maine, Nevada, New Jersey, Virginia and Washington), and Texas added an opt-in for ERISA plans effective September 1, 2023. Under 45 CFR 149.30, a plan that opts in must prominently say so in its plan materials describing out-of-network coverage, and must identify the state.

How to tell which one you are dealing with

No federal rule requires an ID card to show funding type. The No Surprises Act's card requirements cover the deductible, the out-of-pocket maximum and a phone number and website. Some states help: Texas requires cards for plans it regulates to display "TDI" or "DOI" on the front. A card without that marking suggests, but does not prove, that a Texas plan is outside state regulation.

In practice, the most reliable sources are the ones a verification team can ask directly:

  • the payer or administrator, during the eligibility and benefits check, by asking whether the plan is fully insured or self-funded and who the plan sponsor is;
  • the card and plan documents, for phrases such as "administered by," a separate claims administrator name, or a state regulator marking;
  • the plan's out-of-network materials, for any statement that it has opted into a state surprise billing law;
  • for larger employer plans, the employer's Form 5500 filing, which records how the plan is funded. Small insured or unfunded plans with fewer than 100 participants are generally exempt from filing, and the public data lags by years, so use it only as a cross-check.

Record the answer with the date, the source and the representative or reference number, in the same place as the rest of the benefits record. A funding type discovered after a claim is denied is much less useful than one captured before the visit.

Where it matters later in the revenue cycle

The funding type pays off when something goes wrong. It tells the claims team whether a prompt pay complaint to the state is available, whether an appeal should cite ERISA's deadlines, which external review process to request, and whether a state surprise billing law can apply to an out-of-network service. It also shapes negotiations, such as a single case agreement with a plan that is outside state network rules, and disputes over payer recoupments, where state look-back limits may not reach a self-funded plan. Out-of-area Blue claims add another layer, covered in our guide to the BlueCard program.

Capturing it consistently is a verification task. Funding type, sponsor and administrator are details that portals and electronic eligibility responses do not always return, so teams often confirm them by phone. SuperDial automates that benefits verification outreach, calling payers to collect the fields a team specifies and returning them as structured data with a recording and transcript.

FAQ

What is the difference between a self-funded and a fully insured health plan?

In a fully insured plan, the employer buys an insurance policy and the insurer pays claims and is regulated by the state. In a self-funded plan, the employer pays claims from its own funds, often through a carrier or administrator, and the plan is governed mainly by federal law under ERISA.

Do state prompt pay laws apply to self-funded plans?

Generally not. ERISA preemption usually keeps state insurance laws from reaching self-funded employer plans. Texas and Illinois regulators, for example, both state that their prompt pay laws do not apply to self-funded plans.

Does the No Surprises Act apply to self-funded plans?

Yes. CMS states that the No Surprises Act protections apply to employment-based group health plans that are self-funded as well as fully insured. State surprise billing laws apply to self-funded plans only if the plan has opted in where the state allows it.

How can a provider find out if a plan is self-funded?

Ask the payer or administrator during verification, and record who the plan sponsor and claims administrator are. In some states, such as Texas, cards for state-regulated plans carry a regulator marking. For larger employers, Form 5500 filings can confirm the funding arrangement after the fact.

Is a level-funded plan self-funded?

Usually, for regulatory purposes. KFF notes that level-funded policies are sold as self-funded plans and generally are not subject to state requirements for insured plans. If the plan type matters for a dispute, confirm it with the payer or administrator.

Sources

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