Level-Funded vs. Self-Funded Health Plans: Which Is Right for Your Business?
2 November 2026
Level-funded and self-funded health plans both make an employer financially responsible for its own employees' claims. They differ in how much risk the employer keeps, how predictable monthly costs are, and how much control the employer has over vendors and data. The decision carries more weight heading into 2027. Marsh projects an 8.2% rise in per-employee benefit costs, the largest since 2003, and stop-loss insurers are tightening terms at renewal.
What Is a Level-Funded Health Plan?
A level-funded plan is a self-funded arrangement paid through a fixed monthly amount. That payment covers expected claims, administrative fees, and stop-loss insurance that caps the employer's liability. If claims come in below the funded amount, the plan may receive a surplus refund. If claims run higher, stop-loss absorbs the difference.
KFF reports that 37% of covered workers at firms with 10 to 199 employees were in level-funded plans in 2025. Refunds vary by insurer and by year, and many groups receive none.
What Is a Self-Funded Health Plan?
In a self-funded plan, the employer pays claims as they occur, usually through a third-party administrator (TPA) under an administrative services only (ASO) contract. The employer buys stop-loss coverage separately, choosing a specific deductible per member and, optionally, an aggregate limit on total claims. Monthly costs move with claims. Self-funding is the dominant model among larger employers.
Key Differences Between Level-Funded and Self-Funded Plans
Risk and Stop-Loss Structure
Level-funded plans bundle stop-loss with low attachment points set by the insurer, so the employer's annual cost stays close to its fixed payments. Self-funded employers choose their own deductible and keep more risk in exchange for lower stop-loss premiums. In California, SB 161 sets minimum attachment points for small employers, which limits how low a smaller group's deductible can go.
Cash Flow Predictability
A level-funded payment stays flat for the plan year. Self-funded spend tracks actual claims, so a month with a premature birth or a new cancer diagnosis can exceed budget before stop-loss reimburses it. Both models reprice at renewal using the group's own claims experience.
Plan Design Flexibility and Data Access
Both models fall under ERISA and are exempt from state mandates, including California's SB 729 IVF requirement for fully insured large groups. Level-funded products typically bundle the insurer's network, PBM, and administration. Self-funding lets the employer select each vendor and negotiate claim-level data access, which is how cost drivers get identified.
Which Funding Model Fits Your Business?
How Many Employees You're Covering
Claim volatility shrinks as group size grows, because one $1 million claim is a much larger share of total spend at 75 employees than at 400. That is why self-funding is far more common among larger employers, and why smaller groups often start with level funding.
How Much Cash Flow Volatility You Can Absorb
Self-funding requires reserves for claims paid before stop-loss reimburses them and for spending up to the aggregate attachment point. Model a year where claims run well above expected and confirm the business can fund the gap without straining operations.
Your Primary Objective — Cost Predictability, Plan Design Control, or Escaping Community-Rated Pools
Level funding fits employers that prioritize a fixed monthly cost. Self-funding fits employers that want to choose their own PBM, network, and plan design. Both models price on the group's own claims, which benefits groups with favorable experience and exposes them to a steep renewal after a high-cost year.
Hidden Financial Risks to Consider
IBNR (Incurred But Not Reported) Claims Liability
Providers bill weeks or months after care, so a self-funded plan always owes for services not yet billed. Level-funded plans count claims when paid, which can leave late-arriving claims outside stop-loss coverage. Hold an IBNR reserve sized by your actuary or TPA.
Stop-Loss Gaps and Laser Rates
A laser assigns one high-risk member a much higher deductible than the rest of the group. Stop-loss insurers are lasering more often and raising rates even for well-performing groups. Some contracts exclude GLP-1 weight-loss claims from the specific deductible. When plan and stop-loss definitions differ, the employer may pay claims the stop-loss insurer won't reimburse.
Run-Out Claims After Plan Termination
Claims incurred before termination keep arriving after it. Terminal liability coverage may only apply if the employer stays with the current plan or moves to fully insured. Some insurers' level-funded terms also state the employer forfeits the surplus on termination.
ASO and PBM Fee Structures
Total administrative cost includes ASO fees plus PBM compensation, such as retained rebates and spread pricing under traditional contracts. Courts dismissed PBM-related fiduciary suits against Johnson & Johnson and Wells Fargo, while part of a JPMorgan suit survived in 2026. Documented vendor reviews and PBM audits support a prudent process.
Best Practices for Transitioning to a Self-Funded Model
Assess Claims History and Risk Tolerance First
Request claims history, large-claimant reports, and pharmacy utilization before quoting. Stop-loss underwriters price on this data, and missing data generally leads to more conservative quotes and lasers.
Choose Stop-Loss Coverage That Matches Your Risk Profile
Set the specific deductible against your reserves and claimant history, then revisit it each year. Groups that raise deductibles in step with medical trend tend to see smaller stop-loss rate increases. Negotiate no-new-laser and rate-cap provisions, and align stop-loss definitions with the plan document.
Partner With an Experienced Consultant or TPA
A TPA processes claims. A consultant structures the strategy around it, including stop-loss marketing, PBM review, ACA reporting, and employee communication about Cal-COBRA, which applies only to
fully insured plans.
Build a Data-Driven Renewal Strategy From Year One
Track paid claims against expected claims monthly, monitor high-cost claimants, and watch pharmacy trend, especially GLP-1 and specialty drug spend. Quarterly reviews allow deductible, plan design, and vendor changes before renewal quotes arrive.
How KBI Helps Employers Choose and Transition Funding Models
KBI Benefits is a Silicon Valley-based
consulting firm that partners with businesses of
50 or more employees to develop long-term, customized benefits strategies that align with company goals. KBI's reporting and analytics identify the cost drivers in your claims data. Its proprietary
benchmarking tool compares your benefits with peers through a personalized score, ranking, and recommendations. KBI also provides plan administration and underwriting support, including vendor management, plan documentation, and underwriting analysis. Its creative financing strategies are designed to empower you to control costs, with savings of up to 20–40%, depending on group profile.
Talk to a KBI Benefits Expert
If your 2027 renewal has you weighing level funding, full self-funding, or a return to fully insured coverage, start with a review of your own claims data. Contact us today to schedule your free strategy call.
