Fully Insured vs. Level Funded vs. Self-Funded Health Plans: Which Funding Strategy Fits Your Business

For several years, employers have faced some of the steepest health plan renewals on record. The standard responses have been familiar: change carriers, raise deductibles, shift more cost to employees, add a health savings account. Each of these tactics has been used repeatedly, and each offers less room than it once did. At some point, the useful question stops being which carrier to choose and becomes how the plan is funded.

Funding strategy determines who carries the risk of claims, how much the employer can see about where its money goes, and how much control it has over the factors that drive cost. For many organizations, health benefits are the second or third largest operating expense, yet the funding structure has gone unexamined for decades. This post compares the main options so that leadership can evaluate them directly.

If you have not read it, our explanation of the four pillars of health plan funding is a useful foundation. Every structure discussed here is built from the same components: an administrator, a network, a pharmacy benefit manager, and stop loss coverage. The differences lie in how those components are bundled and who bears the risk.

The Core Question Behind Every Funding Strategy

Funding a health plan means paying for care when employees use it. The choices differ on two dimensions.

Who carries the risk of claims. In some structures, an insurance carrier absorbs it. In others, the employer does, usually with protection against catastrophic claims.

Who can see the data. In some structures, the employer receives a premium and little else. In others, the employer sees the claims being paid, by provider, by category, and by cost driver.

The more risk the employer takes on, the more visibility and control it typically gains, and the more attention the plan requires from leadership. There is no universally correct position on that spectrum.

The Four Structures

Fully insured. The employer pays a premium to a carrier, and the carrier bears the risk of claims, administers the plan, and provides the network. A useful way to think about it is that the employer is leasing the plan. The carrier takes the premium and decides how to use it. Predictability is the principal advantage. The tradeoff is limited transparency: the employer sees a renewal number, not the experience behind it. For smaller groups, pricing is subject to more restrictive rating rules, while larger groups are often priced based on their own claims experience.

Level funded. The monthly payment is flat and resembles a fully insured premium, but it is composed differently. It typically includes an amount to fund claims, administration, and stop loss coverage. The employer's cost is tied to its own claims experience rather than pooled across a carrier's broader book of business. Some arrangements return a portion of unused claims funding to the employer if claims are low. Level funded plans are often medically underwritten, which means groups with favorable health profiles may find them attractive, while groups with higher expected claims may find them less available or less favorable.

Partially self-funded. The employer pays claims directly from its own funds, up to a threshold, and purchases stop loss coverage above that threshold to protect against a large claim. Below the threshold, the employer keeps the benefit of favorable experience. The employer or its advisor typically selects the administrator, network, and pharmacy benefit manager, which creates an opportunity to tailor the plan and to see the data.

Fully self-funded. The employer funds its own claims account, maintains the greatest control over plan design and vendor selection, and accepts the most volatility. A claims fund is often set above the expected level of claims to provide a cushion, for example at a margin above a predictive estimate, with stop loss serving as a backstop against catastrophic events. Terminology in the market overlaps, and the line between partially and fully self-funded is often a matter of retention level and degree of control rather than a bright distinction. What matters is the actual structure of the arrangement.

How They Compare in Practice

Setting the four structures against one another on the factors leadership cares about most shows a consistent pattern: as the employer takes on more risk, it gains more visibility and control and accepts more volatility and more responsibility.

Cost predictability. Fully insured plans offer the most predictable cost, since the carrier absorbs the variation in claims. Level funded plans come close, because the monthly payment is flat, although a year-end reconciliation can introduce some variation. Partially self-funded plans are less predictable, and fully self-funded plans are the least, because the employer's cost follows its actual claims up to the stop loss threshold.

Access to claims data. A fully insured employer typically sees little beyond the renewal. Level funded arrangements usually provide moderate to strong reporting. Partially and fully self-funded employers can see detailed information about what is being paid and why, which is the foundation for managing cost rather than simply reacting to it.

The benefit of good experience. In a fully insured plan, favorable claims experience may influence future pricing, particularly for larger groups, but the employer does not directly retain the savings. In a level funded plan, some arrangements return unused claims funding. Under partial or full self-funding, an employer that keeps claims low keeps the difference.

Cash flow and balance sheet demand. Fully insured plans place the least demand on cash flow, since the premium is fixed. Level funded plans are similar in feel. Self-funded plans require the capacity to pay claims as they arise, which can fluctuate from month to month, and the demand is greatest where the retention is highest.

Management attention. A fully insured plan can be run with limited involvement. Level funded plans call for moderate attention. Partial and full self-funding reward, and effectively require, active review of claims data and engagement from finance and executive leadership.

Plan design flexibility. Fully insured plans are generally limited to what the carrier offers. Level funded plans offer somewhat more room. Self-funded employers can tailor benefits, select vendors independently, and build the plan around their workforce, with the broadest flexibility at the fully self-funded end.

The Role of Stop Loss

In any structure where the employer carries claims risk, stop loss coverage is what keeps a single catastrophic claim from becoming an organizational crisis. Two forms are common. Specific stop loss limits exposure to any one individual's claims above a set amount, and aggregate stop loss limits total claims for the group above a ceiling.

The terms matter as much as the price. Attachment points, the treatment of individuals identified as high risk at renewal, and how claims incurred in one period but paid in another are handled can all affect how well the coverage performs. A self-funded plan with stop loss terms that do not match the plan document can leave gaps. Stop loss should be evaluated with the same care as the primary funding decision.

What Should Drive the Decision

Size and claims credibility. Larger groups produce more predictable claims and absorb volatility better. Many advisors suggest that organizations in the range of 100 to 200 employees begin to evaluate alternative funding, though size alone does not settle the question.

Balance sheet and cash flow. Self-funding requires the capacity to pay claims as they arise, which can fluctuate from month to month. Organizations with variable or grant-dependent revenue should weigh that carefully.

Tolerance for volatility. A year of higher than expected claims is a real possibility. Leadership should understand the range of outcomes and be comfortable with it before taking on the risk.

Appetite for involvement. Transparency is valuable only if someone reads and acts on the data. A structure that provides visibility but is not actively managed delivers little more than a fully insured plan.

Workforce profile. Demographics, geography, and health status influence expected claims and the availability and pricing of different structures.

Strategic horizon. An organization planning growth, a transaction, or a focus on enterprise value may weigh the funding choice differently than one pursuing stability.

Regulatory considerations. Self-funded plans are generally governed by federal law, rather than state insurance regulation, which affects plan design flexibility and brings its own compliance and fiduciary responsibilities. Counsel should be involved.

Smaller employers, who have fewer funding options, may also consider arrangements such as professional employer organizations that pool employees across many companies. Those carry their own tradeoffs and are a separate topic.

Common Mistakes

Never revisiting the strategy. Many organizations have used the same structure for twenty years. Because health benefits represent such a large expense, the strategy deserves periodic review, with a view to whether it will still be right for the next several years.

Deciding on first-year price alone. A structure that looks cheaper initially may not be cheaper over time, particularly if claims experience deteriorates or if the plan is difficult to exit.

Ignoring the exit path. Moving into a funding structure is generally easier than moving out of it. Leadership should understand what returning to a fully insured plan would involve before committing.

Self-funding without governance. Taking on risk without a process to review claims data, manage high-cost claims, and adjust the plan misses the point of doing so.

Assuming self-funding suits everyone. It does not. It is a strategy to evaluate, not a destination.

Questions to Ask Before Your Next Renewal

• Do we know how our plan is funded, and do we understand how the components are bundled?
• Have we received a side-by-side evaluation of at least fully insured and one alternative structure, including projected costs under favorable and unfavorable claims scenarios?
• What would stop loss terms look like, and how well do they match our plan document?
• Do we have the capacity and the process to review claims data and act on it?
• What is the exit path if the strategy does not perform as expected?

The Bottom Line

Fully insured, level funded, partially self-funded, and fully self-funded plans are different answers to the same question: how much risk and visibility an employer is willing to take on in exchange for cost control. The right answer depends on size, cash flow, risk tolerance, and the willingness to manage the plan actively. Poms & Associates helps organizations evaluate these structures on a total cost basis, using the same risk assessment discipline we apply to every program, including the full cost picture beyond premium, so the funding strategy reflects the organization's actual circumstances rather than habit.

If your health plan funding has not been evaluated in recent years, talk to a Poms & Associates advisor before your next renewal.

Frequently Asked Questions

What is the difference between fully insured and self-funded health plans? In a fully insured plan, the employer pays a premium and the carrier bears the risk of claims. In a self-funded plan, the employer pays claims directly and typically buys stop loss coverage to protect against catastrophic claims, gaining more visibility into claims data and more control over plan design.

What is a level funded health plan? A level funded plan has a flat monthly payment that resembles a fully insured premium, but the payment covers a claims fund, administration, and stop loss. The employer's cost is tied to its own claims experience, and some arrangements return unused claims funding if claims are low.

What is stop loss insurance? Stop loss is coverage purchased by an employer that funds its own claims. Specific stop loss caps the employer's exposure to any one person's claims above a set amount, and aggregate stop loss caps total group claims above a ceiling.

How large does a company need to be to consider self-funding? There is no fixed threshold. Many advisors suggest that organizations with roughly 100 to 200 employees begin evaluating alternatives, but the decision also depends on cash flow, tolerance for volatility, and willingness to manage the plan actively.

Is self-funding right for every employer? No. It shifts risk and responsibility to the employer in exchange for transparency and control. Organizations with limited cash flow flexibility or little appetite for active management may be better served by fully insured or level funded arrangements.