If you’re the CFO of a mid-size company, you almost certainly know what your insurance program costs. You’ve negotiated with your broker. You’ve winced at renewals. You’ve probably cut coverage somewhere you shouldn’t have to make the numbers work. What you may not have thought about is this: insurance is only half of your risk financing strategy — and it’s usually the half you have the least control over.

The other half is self-insurance. Every deductible your company absorbs, every risk your commercial policy excludes, every uninsured exposure you’re carrying — that’s self-insurance. You’re already doing it. The question a captive structure forces you to answer is whether you’re doing it efficiently.

Every company self-insures. The question is not whether — it’s how efficiently. A captive is the structure that makes self-insurance deliberate, tax-advantaged, and financially productive rather than simply a gap in your commercial coverage.

The Self-Insurance Problem Every CFO Is Ignoring

Think about what happens when your company absorbs a loss that falls inside your deductible, or in a coverage gap that your policy neatly carves out. The cash comes from operations. There’s no reserve account for it. No tax structure around it. No investment return on funds held against that risk. The loss just hits the P&L and disappears — along with cash you were counting on for something else.

This is not unusual. Most companies with $5 million or more in revenue are carrying retained risk in the range of hundreds of thousands of dollars annually — sometimes more — with nothing more sophisticated than their operating bank account to back it up. Industry data suggests that for every dollar paid in commercial premiums, businesses retain roughly 30 to 50 cents of risk through deductibles, gaps, and exclusions. [1]

A CFO who has optimized accounts payable, treasury management, and working capital — but hasn’t addressed the structure of their self-insured layer — has left a meaningful inefficiency on the table.

What a Captive Actually Does

A captive insurance company is a licensed insurance entity that you own — either directly or through a shared structure like a protected cell company (PCC). Instead of paying premiums to a third-party commercial carrier and losing those dollars permanently, your company pays premiums to your own captive. The captive holds those premiums as reserves, invests them, and pays claims when they occur. What isn’t consumed by claims accumulates — and belongs to you.

From a CFO’s perspective, a captive does three things a commercial policy cannot:

•   It converts an expense into an asset.  Premiums paid to a commercial carrier are gone. Premiums paid to a captive become reserves that sit on the captive’s balance sheet — yours.

•   It allows favorable loss history to benefit the business directly.  When your company runs safe, your captive accumulates more. Commercial insurers socialize this across their entire book. Your captive doesn’t.

•   It provides coverage for risks the commercial market won’t write.  Regulatory exposure, specific contractual indemnities, cyber gaps, deductible layers, loss limits — a captive can be structured to address exactly what your commercial program leaves uncovered.

A captive is also not a replacement for your commercial program. It works alongside it. Commercial coverage handles the large, standardized exposures that admitted carriers write efficiently. The captive handles what falls beneath, between or over— your deductibles, your coverage gaps, your excluded risks. The result is a more complete program at a more rational total cost.

The Tax Mechanics: How 831(b) Works

Most mid-size business captives elect treatment under IRC Section 831(b). Under this election, a qualifying small insurance company — one collecting $2.9 million or less in annual premiums (as of 2026, indexed for inflation) — is taxed only on its investment income, not on the premiums it receives. [2]

Think about what this means for the math:

•   Your company pays premiums to the captive. Those premiums are a deductible business expense at the operating company level — the same as premiums paid to any commercial carrier.

•   The captive receives those premiums. Unlike a commercial carrier, the captive does not pay income tax on them. The premiums flow directly into reserves.

•   The captive invests its reserves. It pays tax only on the investment income earned — not on the principal.

•   Over time, the captive’s reserves compound. If loss experience is favorable, those reserves end up being highly significant.

This is not a loophole or an aggressive tax position. It is the same economic logic that makes all insurance companies viable: they are not taxed on premium income, only on underwriting profit and investment returns. Captives simply extend this treatment to the business owner’s benefit rather than the commercial carrier’s.

⚠  IRS Notice 2016-66 designated certain micro-captive arrangements as “transactions of interest.” This applies to captives structured to function as wealth transfer vehicles rather than genuine insurance companies — arrangements with non-actuarial pricing, inadequate risk distribution, or no real claims activity. A properly structured captive — with arm’s-length premiums, independent actuarial support, and genuine risk transfer — does not fall into this category. In every reported case where a captive was genuinely structured, the IRS has not prevailed in court.

What the Numbers Can Look Like

Every company’s situation is different, but a rough illustration helps frame the opportunity. Consider a company currently spending $600,000 per year in total commercial insurance premiums across all lines — general liability, property, workers’ comp, professional liability, and specialty coverage:

•   Of that $600,000, the company also absorbs an estimated $200,000 in annual retained risk through deductibles and coverage gaps — carried entirely in operating cash with no structure.

•   A captive is structured to write $400,000 in annual premiums covering the deductible layer, several excluded risks, and one specialty coverage the commercial market prices punitively.

•   Those premiums are deductible at the operating company level. The captive receives them tax-free under 831(b) and holds them as reserves.

•   Over five years with a conservative loss ratio, the captive accumulates $1.5 to $2 million in reserves — capital that belongs to the business, available for future claims, coverage expansion, or return to the owner.

The commercial premium paid for equivalent coverage — if it were even available — would have been spent, with nothing remaining. The captive converts that ongoing cost into an accumulating asset.

The Balance Sheet Argument

CFOs and boards who have reviewed acquisition targets know that uninsured or underinsured exposure is a diligence problem. It creates contingent liabilities that reduce valuation, trigger representations and warranties issues, and sometimes kill transactions. A well-structured captive addresses this directly:

•   It demonstrates that retained risk is being managed systematically, not ignored

•   The captive’s reserve balance is a genuine asset that can be presented to lenders, investors, and acquirors

•   Coverage gaps are addressed — reducing the contingent liability exposure that creates valuation haircuts

•   The program’s stability is not dependent on the renewal decisions of a single commercial carrier

For companies considering a capital raise, a sale, or a banking relationship, a captive structure is increasingly a positive signal — not an exotic one.

Is Your Company a Good Candidate?

The economics of a captive work best when there is meaningful premium volume to justify the structure’s overhead. As a general benchmark, companies with $10 million or more in annual revenue — and total insurance program spend of $200,000 or more per year — represent the most compelling candidates. This includes companies across industries: manufacturers, professional services firms, contractors, healthcare operators, distributors, and technology companies.

A few indicators that a captive evaluation is particularly worth pursuing:

•   Your commercial premium costs have grown faster than your revenue over the past three years

•   You’re absorbing significant deductibles or coverage gaps that you’ve had to budget as “expected losses” in operating cash

•   Your company has a favorable loss history that commercial carriers are not crediting back to you

•   You have identified specific risks — contractual obligations, regulatory exposure, specialty lines — that your current program doesn’t adequately address

•   You’re planning a capital raise, M&A transaction, or banking event where risk management posture will be reviewed

Boards and investors who are reading this because they’d like to raise this with their management team: the question to ask is simple. “What is the current structure for managing our retained risk layer?” If the answer is “our operating cash account,” the conversation about a captive is overdue.

The Evaluation Process

The first step is a no-cost evaluation conversation. In that conversation, we review your current insurance program, your revenue and risk profile, and your corporate structure. We know with near certainty whether a captive is the right fit before any fees are engaged or any study is commissioned. The formal feasibility study, which is the first paid step, is not commenced until both parties are highly confident the structure makes sense.

We also offer an AI-powered analysis of your existing commercial policies — not a summary, but the actual policy language — that identifies where you are covered, where you are not, where your limits are insufficient for your actual exposure, and where a captive could address the most meaningful gaps. For most CFOs, this analysis alone produces findings that reframe the conversation about risk financing entirely.

The CFO’s homework before the first conversation: Pull your total insurance spend across all lines for the past three years. Add an estimate of losses absorbed inside deductibles and in coverage gaps. That total — premiums plus retained losses — is your actual annual cost of risk. That is the number a captive is designed to make more efficient.

Ready to run the numbers for your company? 3F Captive Services offers a no-cost initial evaluation and an AI-powered analysis of your current policies. Contact us to schedule a conversation — and come in knowing your total cost of risk.

  This post does not constitute legal or tax advice. Captive insurance structures involve complex tax and legal considerations. Consult qualified advisors regarding your specific situation.

Sources

  [1]  Deloitte Risk Advisory / Marsh McLennan. “The True Cost of Risk: How Businesses Account for Retained Exposure.” Industry Report, 2024.

  [2]  Internal Revenue Code § 831(b); IRS Rev. Proc. 2002-75; IRS Publication 535 (Business Expenses).

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