Funding Arrangement · Self-Funded Captive

Self-funded captive:
self-funded economics, pooled risk, laser protection that holds.

Joining a captive lets you self-fund without bearing the catastrophic risk alone. You pool stop-loss premium with 20-100 other similar-sized employers, share captive-level analytics and care management, and — with the right captive — get laser-policy protection that pure self-funded plans can't offer. For 30-100 EE groups, captive is often the entry point to self-funded economics.

This page is the long version. If you'd rather just model your numbers: jump to the Health Funding Projector →

Best fit30–100 EEStable claims, want SF without cliff risk
Typical savings10–25%vs. fully-insured
Laser protectionPer captiveBlackwell 50% cap, Roundstone 30%, varies
Surplus distributionPool-sharedSome captives 100% return, some 0%

The captive question pure self-funded doesn't answer cleanly: "how do I capture self-funded economics without losing 18% on a single bad year, and without getting lasered at renewal when one of my employees gets diagnosed with cancer?"

How self-funded captive actually works

A captive is a pooled-risk vehicle. You join 20-100 other employers (typically 35-150 EE each) into a shared captive that buys aggregate stop-loss for the entire pool. Each employer is technically self-funded — your monthly premium goes into your own claims fund, you pay your own claims, you keep your own surplus on a good year. But the pool buys reinsurance collectively, which dramatically lowers the per-employer cost of stop-loss.

The captive sponsor (Pareto, Roundstone, Captive Resources, Blackwell, etc.) handles pool governance, sources risk-management tools, and structures the surplus distribution. Some captives return 100% of pool surplus to members; some return 0%; most are somewhere in between. The captive sponsor's structure matters more than the captive's name brand.

Laser policy is the key differentiator. A "laser" is when the stop-loss carrier assigns a specific employee a higher deductible than the rest of the group at renewal — usually because that employee filed a large claim during the prior year. Pure self-funded plans get lasered routinely. Some captives (Blackwell, certain Roundstone configurations) cap or eliminate lasers as a structural feature. If you have any chance of having an employee with a chronic high-cost condition, laser-protection at renewal is worth more than the headline savings.

What you control vs. what you don't

The defining frame for any funding decision: who owns the risk, who owns the data, who owns the surplus, who owns the compliance burden. Level-funded sits in the middle of the spectrum — more control than fully-insured, less than self-funded.

Dimension Fully-Insured Level-Funded Self-Funded
Risk on bad yearCarrier (you pay fixed)Capped at 110-125% expectedYou bear it all to stop-loss
Surplus on good yearCarrier keeps it50/50 split or 100% return100% yours
Claims data accessLimited, delayedMonthly, full detailReal-time
Plan design flexibilityCarrier templatesCustomizable within carrier frameworkFully customizable
ERISA compliance burdenCarrier owns itShared (you're the plan sponsor)Fully on you
Cash flow predictabilityFixed monthlyFixed monthlyVariable claims-as-paid
Renewal volatility5-15% typical, up to 50%Smooths over multi-yearDriven by your data

What this looks like over five years for a 75-employee group

Same group, same demographics. Captive trades a small amount of upside (vs. pure self-funded in a clean year) for substantial downside protection (vs. pure self-funded in a bad year).

$22k $20k $18k $16k $14k Yr 1 Yr 2 Yr 3 Yr 4 Yr 5 Fully-Insured Level-Funded Self-Funded

Captive's line is the steadiest of the three alternatives in years with claim spikes — that's the laser-protection and pool-pooling effect. Pure self-funded would have saved more in a perfectly clean 5-year run; captive would beat it whenever any one year went sideways.

Where BENEFITRA actually adds value on a self-funded captive plan

Anyone can sell you self-funded captive. Here's what we do that most brokers don't:

Worked example · 58-EE construction firm in TX

What captive looks like when laser protection earns its keep

General contractor, 58 enrolled employees plus dependents, two prior years of stable claims history. Year-1 of captive plan: a 34-year-old foreman was diagnosed with stage-3 colon cancer in month 7. Annual claims: $487,000 from one person.

Year-1 captive premium (paid)
$782,000
Specific stop-loss reimbursement (claims over $50K spec deductible)
+$437,000
Pure self-funded equivalent — Year-1 cost
$1,103,000
Captive savings via laser-protected renewal
$176,000 (16%)

Without the captive's no-new-laser provision, Year-2 stop-loss would have lasered the foreman to a $250K specific deductible. The pure self-funded equivalent would have absorbed an extra $200K in Year-2 exposure. Inside the captive, the same employee continued at the standard $50K specific deductible. That's the laser-protection value most brokers don't quantify.

Model your own numbers

The Health Funding Projector compares fully-insured, level-funded, self-funded, and captive across a 5-year horizon based on your group's size, location, and claims history.

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How self-funded captive stacks against the other six

Self-Funded Captive is one of seven funding paths Benefitra works with. Each has a sweet spot and an exit ramp. Pick the page that matters most for your situation:

Fully-Insured Level-Funded Self-Funded ICHRA PEO-Integrated Taft-Hartley Compare all seven

Frequently asked questions about self-funded captive health insurance

What's a 'laser' in stop-loss insurance, and how do I avoid one at renewal?
A laser is when the stop-loss carrier assigns a specific employee a higher specific-stop-loss deductible than the rest of the group at renewal. Example: most of your group sits at a $50K specific deductible, but Jane (who had $400K in claims last year) is lasered to $250K. The next time Jane has high claims, you absorb $250K of them before reinsurance kicks in. Lasers are how stop-loss carriers protect themselves from chronic high-cost claimants, but they're catastrophic to budget predictability. To avoid them: choose a captive with explicit no-new-laser language (Blackwell's 50% rate-cap structure, Roundstone's bounded-laser provision); pure self-funded plans should pre-negotiate laser caps in the stop-loss policy; level-funded plans should require laser-policy disclosure in writing before binding.
Do I lose my surplus if I leave the captive mid-year?
Almost always yes, and that's by design. Captive surpluses are calculated and distributed at year-end based on pool performance. Mid-year departures forfeit any surplus that would have been distributed at year-end, and depending on the captive structure, may also owe a contribution toward the pool's reinsurance settlement (similar to how some captives have member contributions in bad years). Always get the exit terms in writing before joining: notice period (usually 60-90 days), surplus forfeiture rules, run-out claim responsibility, prepaid-premium recovery. Some captives charge an exit fee to discourage churn. Pareto and CRI have different exit structures than Roundstone or Blackwell; the differences are material.
How do Pareto, Roundstone, Captive Resources, and Blackwell actually differ?
Pareto is the largest by premium volume — opaque surplus model (lump-sum distribution, hard to itemize), 30% rate-cap mechanism that some experts argue is actuarially questionable. Roundstone is top-five by volume — lowest barrier to entry (20 EE minimum), 5-year savings guarantee structured like a contractual commitment, can add lasers at renewal but caps them at 3x the specific deductible. Captive Resources is the oldest at 40 years — 7,700+ member companies, 98% retention, content infrastructure surprisingly thin for a 40-year specialist. Blackwell is the newest at 2 years operational — managed by Luzern Risk, no new lasers at renewal plus a 50% rate cap, built-in care-management tools at no extra PEPM. The right captive depends on your size (Roundstone wins under 35 EE; Blackwell wins for laser protection above 40 EE; Pareto wins for sheer track record), your surplus expectations, and your claim profile.
What happens to MY claims if other captive members have a bad year?
Your individual specific-stop-loss layer (typically $50K-$100K per claimant) is yours alone — other members' claims don't touch it. Above that, claims hit the captive's pooled aggregate stop-loss, which is where shared risk shows up. If the entire pool has a bad year (total claims exceed the captive's aggregate attachment, usually 115-125% of pool expected claims), the pool either draws from the surplus reserve (which everyone loses) or bills members for the shortfall. In a single bad year, the captive's reinsurance treats the entire pool as one buyer, so individual employer impact is buffered. Multi-year bad performance increases everyone's renewal premium. The captive's job is risk-pooling, not risk-elimination — you're trading your individual volatility for pool-level volatility, which is usually a better trade if the pool is large (>50 employers) and well-curated.
How small does a captive need to be before death-spiral risk kicks in?
The death-spiral risk: a captive with too few members (under 20 employers) doesn't have enough premium volume to negotiate competitive stop-loss reinsurance, which makes the captive's own renewal premium climb, which drives healthy members to leave, which leaves only sick groups, which makes the renewal climb further, which kills the captive. The threshold is generally 20-30 employer-members for a viable captive, depending on average group size. Captives sponsored by major firms (Pareto, Roundstone, Blackwell, Captive Resources) have sponsor balance sheets backing them and aren't at death-spiral risk. Smaller, broker-sponsored captives ('proprietary' captives marketed by individual agencies) are the ones to watch. Ask: how many employer-members are in this specific captive (not the sponsor's total book), and what's the year-over-year retention rate?
Can I join a captive at any time, or only at plan-year start?
Most captives accept new members on rolling basis, but the most common entry point is your plan-year renewal date. Mid-year entry is possible but introduces complexity: you'll have a stub-year inside the captive (less than 12 months), pro-rated premium, and a partial-year surplus calculation. Some captives don't accept mid-year entries because the underwriting requires 12 months of claims history aligned with their pool's plan year. Captives with rolling open enrollment (Roundstone, some Blackwell configurations) are more accommodating; Pareto and CRI are stricter on plan-year alignment. If you're considering captive at a non-standard time, expect 60-90 days of underwriting before binding.
What's the typical captive minimum group size in 2026?
It varies by captive sponsor. Roundstone advertises 20 EE minimum. Blackwell's real minimum is around 35 EE (driven by their $150K minimum stop-loss premium). Pareto's effective minimum is 50 EE despite marketing language suggesting smaller groups qualify. Captive Resources tends toward 75 EE+. Industry-specific captives (construction, transportation, healthcare) sometimes have smaller minimums because pool curation tightens the underwriting. Below 30 EE, captive math gets borderline — you may save vs. fully-insured but not as much as you'd hope. The sweet spot for captive economics is 50-100 EE; above 100 EE, pure self-funded usually pencils out better unless you specifically value the laser protection.

Want a captive comparison that actually scores the four major sponsors?

We'll model your group across Pareto, Roundstone, Captive Resources, and Blackwell — including pool quality, laser-policy mechanics, surplus structure, and exit terms — and present the comparison in writing before recommending a path.

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