Captive Insurance
Also known as: captive insurer, captive insurance company
Captive insurance is a form of self-insurance formalized as a real, regulated insurer that the insured business owns. Instead of paying premium to an unrelated commercial insurer, the parent company creates a captive, pays premium into it, and the captive pays the parent's claims. Because the captive is a licensed insurance entity (often domiciled in states like Vermont or offshore jurisdictions), premiums can be tax-deductible and the parent keeps the underwriting profit and investment income that a commercial carrier would otherwise retain.
For most small businesses, a standalone single-parent captive is too costly to justify, but group captives and cell captives have pushed the concept downmarket. These let mid-sized companies pool risks with similar businesses, share fixed costs, and gain more control over claims handling and pricing. The appeal is aligning cost with actual loss experience: a business with strong safety and few claims can recapture money that would otherwise disappear into a commercial carrier's premium, which relates closely to how self-insured retention and experience rating reward good loss history.
A practical nuance is that a captive is not a way to escape risk — it is a way to finance it. The parent still bears the losses it insures, and prudent captives buy reinsurance to cap catastrophic exposure above a chosen attachment point. Captives also carry real obligations: capitalization requirements, actuarial studies, annual audits, and regulatory filings. The IRS scrutinizes small 'micro-captives' aggressively, so a captive must have genuine risk distribution and legitimate business purpose, not merely tax benefits, to survive challenge.
Real-world scenario
Summit Ridge Logistics, a mid-sized regional trucking fleet with 140 power units and a $6,200,000 annual payroll, was tired of paying $1,850,000 a year in guaranteed-cost workers' compensation and commercial auto premium while running a five-year loss ratio of just 38%. Working with their broker, they joined a homogeneous group captive alongside 14 other best-in-class fleets. The captive required a $310,000 capital contribution, a $175,000 collateral letter of credit, and a first-year premium of $1,420,000 split into an A-fund (loss fund) of $940,000 and a fixed-cost fund of $480,000 covering reinsurance and admin.
Within the structure, Summit Ridge retained the first $250,000 per claim through its share of the loss fund; losses above that layer flowed to the captive's reinsurance tower, which capped the group's aggregate at $5,000,000. In year two, a rollover crash produced a $410,000 bodily-injury claim. The first $250,000 hit Summit Ridge's loss fund, but the remaining $160,000 was absorbed by reinsurance, protecting the member's balance sheet. Because the fleet ran clean otherwise, only $520,000 of its $940,000 loss fund was consumed.
At the captive's year-end accounting, unused loss fund plus $47,000 of investment income was returned as a dividend. Summit Ridge received a $268,000 distribution, dropping its net cost of risk to roughly $1,152,000 versus the $1,850,000 it had paid in the traditional market — an $698,000 swing it never would have seen under a fixed deductible program.
How it affects your premium
Captive premium is not a rate off a filed manual — it is engineered around each member's own loss data and the group's collective appetite. The biggest levers:
- Individual loss history and loss ratio — the actuary builds each member's loss fund off 5 years of loss runs; a 30% loss ratio funds far lighter than a 65% one.
- Retention / per-claim layer — how much risk each member keeps (often $100,000–$500,000) before the reinsurance layer responds directly drives the loss-fund size.
- Capitalization and collateral — capital contributions and letters of credit are set by the domicile regulator and the fronting carrier's self-insured retention requirements.
- Fronting and admin costs — the fixed fund covers the fronting carrier fee, TPA claims handling, actuarial, and captive management, typically 20–35% of total spend.
- Reinsurance market conditions — the excess tower's cost floats with the global reinsurance cycle regardless of a member's own record.
- Exposure size and class — payroll, fleet size, and industry hazard set the premium base and how much credibility the member's own experience earns.
Common misconceptions
Myth: A captive means I'm 100% self-insured and fully exposed to a catastrophic claim.
Reality: Captives almost always sit behind a reinsurance or excess layer, so members retain only a defined per-claim and aggregate amount; losses above the attachment point transfer out to the market.
Myth: Captive insurance is only for Fortune 500 companies.
Reality: Single-parent captives do skew large, but group captives and risk retention groups routinely accept mid-market firms paying $150,000 or more in annual premium with strong loss experience.
Myth: If I have a bad claim year, the captive just keeps my money.
Reality: Underwriting profit and investment income on unused loss funds are returned to members as dividends; conversely a bad year can trigger an assessment, so the risk-and-reward runs both directions.
Frequently asked questions
What is the difference between a single-parent captive and a group captive?
Do I still need a licensed insurance company to issue policies?
How is a captive different from a large deductible program?
What kinds of coverage typically go into a captive?
How much capital do I need to join a captive?
Sources cited
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