Self-funding a health plan has four main risks. You pay the claims directly, so a bad year hits your budget instead of an insurance company's. The stop-loss coverage that limits that risk has gaps you need to understand. You rely on a third-party administrator to run the plan day to day. And you take on compliance work that the carrier used to handle for you.
None of these risks is a reason to avoid self-funding.
Many employers run self-funded plans well for years. But it helps to be clear about what self-funding actually is.
It is not simply dropping the insurance company and keeping the savings. You are taking on a different kind of arrangement, one where you hold the financial risk and the responsibility for running the plan.
Why This Is Easy to Underestimate
Self-funding usually gets presented as a financial decision. The projected savings are real, and for many employers the numbers do work.
But once you self-fund, you also take on responsibilities and risks that a fully insured plan kept off your desk. That part tends to get less attention during the sales process.
The employers who run into trouble are usually not careless. They felt prepared, and then a bad claims year showed them where they were not. A reserve that was set too low. A third-party administrator that was not being watched closely. A stop-loss renewal that came back much higher than the first year.
The employers who do well are the ones who looked carefully at all four risk areas before signing, not after a problem showed up.
The hard part is that it is difficult to judge your own readiness across all four areas just by talking it through.
A vendor presentation is built to show the upside, not to point out where you might be exposed.
Working through a checklist on your own surfaces those gaps while you still have time to address them.
The checklist below covers reserve sizing, stop-loss coverage, choosing and monitoring a TPA, and your ERISA responsibilities, with questions that point to where your exposure actually is.
Here is each risk area in turn, starting with the one that draws most employers to self-funding in the first place, which is also the one that carries the most financial risk.
What Actually Shifts When You Self-Fund?
A common misunderstanding is that self-funding means cutting out the carrier and keeping the difference.
What it really means is that the financial risk and the responsibility for running the plan move to you. Who writes the check is the smaller part of the change.
It is worth being precise about the legal side, because it is often misstated.
If you already offer an ERISA health plan, you are almost certainly the plan sponsor and, unless your plan document names someone else, the plan administrator under ERISA Section 3(16), which is itself a fiduciary role.
Most plan documents also name the employer as the plan's fiduciary under ERISA Section 402(a). This is true whether the plan is insured or self-funded. So self-funding does not make you a fiduciary for the first time.
You already were one.
What changes is how much those duties involve. You now carry the claims risk, you take on work the carrier used to handle, and weak oversight now falls on you rather than on an insurer.
Fiduciary status comes from what you actually do and control, not from a title.
Self-funding broadens both.
The Four Risk Areas Worth Understanding Before You Sign
Each of these is manageable on its own. The problems come from underestimating how they add up together.
- Claims volatility. In a fully insured plan, the carrier absorbs a bad year. In a self-funded plan, you do. A single large claim or a high-use year hits your budget directly, and as it happens.
- The limits of stop-loss. Stop-loss insurance caps your risk, but the terms vary. Specific stop-loss covers an individual whose claims pass a set amount. Aggregate stop-loss covers your total claims above a threshold. What each one excludes matters as much as what it covers.
- Relying on your TPA. A self-funded plan depends on a third-party administrator for claims processing, network access, and daily administration. When that relationship is weak, it affects both your costs and how employees experience their coverage.
- The compliance that moves to you. Self-funded ERISA plans are generally exempt from state insurance rules, but the plan document, the summary plan description, and the Form 5500 become more directly your responsibility, work a fully insured carrier often supplied.
What the Cash Flow Actually Looks Like
This is the risk that surprises employers most often. A fully insured premium is the same amount every month.
With a self-funded plan, you pay claims as they come in, so a quarter with several large claims, a complex surgery, a premature birth, a new cancer diagnosis, hits when those claims hit.
Most employers manage this with a claims reserve and stop-loss coverage. Setting the reserve at the right level is not a rule of thumb.
It depends on who is on your plan, how they have used it, and how the plan is designed.
Employers working through whether their workforce and finances are a good fit for self-funding usually reach the reserve question early, which is where it belongs.
What Employers Often Miss Going In
A few things tend to catch employers off guard in years two and three.
- The stop-loss renewal. After a bad claims year, the carrier can raise the price, exclude a specific high-cost person, or raise that person's threshold through a practice called lasering. The first-year premium is not a number you can count on in year three.
- How the TPA performs. Claims paid incorrectly, out-of-network claims paid at in-network rates, and slow processing all affect your costs and employees' trust in the plan. Monitoring the TPA is not a one-time task. Carefully selecting and monitoring a service provider is an ongoing fiduciary responsibility.
- You become the point of contact. To an employee, a self-funded plan looks the same as an insured one, until something goes wrong. Then they come to you, not to a carrier.
Employers who take the time to understand whether the total cost actually works in their favor before committing tend to make steadier decisions and face fewer surprises once the plan is theirs to run.
What This Means for Your Company
Judge a self-funding proposal by what you could absorb in a bad year and what running the plan will require of you, not by the projected savings alone.
The four risk areas are the questions to ask.
Is the reserve large enough for a real claims swing? Have you read the actual stop-loss terms, not just the rate? Can you monitor the TPA? Are you set up to handle the compliance work? A strong first-year number does not answer any of these.
The harder question is which of these you are genuinely ready for now, and which you are assuming will be fine because the savings look good.
That is easier to work through with a checklist in front of you than from memory, especially when the proposal arrives as a financial pitch and the risks are reduced to a few footnotes.
Putting It in Perspective
Self-funding is, at its core, a decision about who carries the risk and who runs the plan.
It is not just a change in how you pay for coverage.
The savings can be real, and so can the swings that no one fully controls in a given year.
What you do control is whether you understood the risk before signing, set the reserve deliberately, read the stop-loss terms carefully, and put real attention on the administrator.
Looked at that way, a good self-funding decision is not the one that comes in under budget in year one.
It is the one you could explain clearly, to your CFO or an auditor in a difficult year, including why you took on the risk and how you are managing it.
From Knowing to Confirming
Knowing the risks is the easy part.
The real work is checking them against your own numbers, your claims history, your reserves, your stop-loss terms, and how the plan is run, and being honest about whether you are ready to take them on or only assuming you are because the projection looks good.
There are two straightforward ways to do that, depending on whether you want a second set of eyes or would rather work through it on your own first.
If You Want a Second Set of Eyes
First Hill Trust can walk through where your plan stands on the four risk areas before this goes to leadership or a vendor process.
A brief review covers your current claims and reserves, your stop-loss terms if you have coverage, any signs of trouble with your TPA, and where you stand on ERISA as plan sponsor, named fiduciary, and plan administrator. About 30 minutes, focused on your plan, no obligation. Schedule a brief review, or call (206) 625-1800.
Prefer to Evaluate This Internally?
To start on your own, the same checklist used in that review is available to download.
HR can use it as a pre-read before a vendor process, finance can use it to check a vendor's pitch, and the two together can use it to work through the decision before taking it to leadership.
Important Disclosures
Educational purpose only. Provided by First Hill Trust Company for general informational and educational purposes only. It is not legal, tax, accounting, investment, or fiduciary advice, does not constitute a recommendation regarding any plan, investment, strategy, or course of action, and does not consider any recipient’s specific circumstances. Consult your own qualified advisors before acting.
No offer, agreement, or commitment. Nothing in this material constitutes an offer, solicitation, agreement, or commitment to provide any particular service or to assume any particular responsibility. Descriptions of what a trustee, administrator, adviser, committee, employer, or other party “may” or “can” do are illustrative of how such arrangements commonly work and do not describe the terms of any specific engagement. The actual services provided, the allocation of responsibilities, the scope of any delegation, and the duties of any party are governed solely by the applicable plan documents, trust agreement, advisory agreement, and written service agreements. In the event of any inconsistency, those documents control.
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Statutory and regulatory references. References to ERISA, the Internal Revenue Code, and related statutory or regulatory provisions are general summaries only. They are not a substitute for review of the actual statutory text, regulations, or guidance from the Department of Labor, Internal Revenue Service, or other relevant authorities, and they do not address how those provisions may apply to any particular plan, sponsor, fiduciary, or individual. Laws, regulations, and guidance are subject to change and to interpretation by the relevant agencies and courts. Examples, categories, and situations described are simplified for illustration and may not reflect the requirements or circumstances of any particular plan or person.
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For more information, contact First Hill Trust Company at (206) 625-1800 or visit firsthilltrust.com.
