Captive Insurance Explained

When commercial insurance premiums rise sharply, or cover for a specific risk becomes hard to find at any price, some larger companies respond by setting up their own insurance company instead of continuing to buy cover from the open market. This is captive insurance: a company creates a licensed insurer, wholly owned by itself or a group of related businesses, specifically to insure its own risks. It sits at the intersection of risk management, corporate finance and treasury, and it's a structure that comes up regularly for finance professionals working in large, risk-exposed organisations.

What a Captive Insurer Is

A captive is a licensed insurance or reinsurance company set up and owned by the business, or group of businesses, it insures, rather than by an unrelated third-party insurer. The parent company pays premiums into the captive just as it would to a commercial insurer, and the captive pays out claims when the insured risks occur. Because the captive is owned by the same group it insures, any underwriting profit the captive makes, after paying claims and expenses, stays within the group rather than being retained as profit by an external insurer.

Why Companies Set Up Captives

Companies turn to captive insurance for several reasons. It gives direct control over coverage terms and claims handling for risks that commercial insurers either won't cover, price very conservatively, or only offer with heavy restrictions, such as product liability for a niche manufacturer or business interruption for an unusual supply chain. It can also be more cost-efficient over time for a company with a genuinely good loss history, since premiums and investment income stay within the group instead of funding an external insurer's margin. Captives additionally give access to the reinsurance market directly, often at better terms than the parent could negotiate for a single commercial policy, and they provide a vehicle for formally managing risks the company would otherwise have to self-insure informally, with no reserve or governance structure behind that decision.

Common Captive Structures

A single-parent, or "pure", captive insures only the risks of the company that owns it, and is the most common structure for very large corporates with sufficient scale to justify the cost of running their own insurer. A group captive pools several unrelated companies, often in the same industry or trade association, sharing the cost of a captive structure none of them could justify alone. A rent-a-captive or cell captive goes further, letting a smaller company access captive insurance economics by renting a segregated "cell" within someone else's licensed captive facility, without the cost of establishing a full standalone entity. Many captives are domiciled in jurisdictions such as Bermuda, Guernsey, Vermont or Luxembourg, chosen for their specialist captive insurance regulatory regimes, and the legal entity itself is typically structured as a form of special purpose vehicle ring-fenced from the parent's other operations.

Captives and Reinsurance

Most captives don't retain all the risk they write. Instead, the captive typically cedes a portion of each risk to the external reinsurance market, keeping a layer of risk it is comfortable retaining and passing on the rest. This lets a captive write meaningful coverage without needing the capital base of a full commercial insurer, while still giving the parent company the governance and cost benefits of owning the primary insurer. Some larger, more sophisticated captives also use capital markets structures such as catastrophe bonds to transfer extreme tail risks, similar in concept to how insurers use catastrophe bonds and insurance-linked securities to offload peak risk to investors.

Regulatory and Tax Considerations

Because a captive is a licensed insurer, it is subject to insurance regulation in its domicile, including minimum capital requirements, solvency monitoring and periodic reporting, even though its only customer is its own parent group. Tax authorities also scrutinise captive arrangements closely to confirm that premiums paid to the captive reflect genuine insurance risk transfer and arm's-length pricing, rather than functioning as a disguised way to shift profits between jurisdictions. Getting this wrong can mean premiums paid to the captive are disallowed as a tax deduction, so captives are generally run with independent actuarial pricing and robust governance to withstand that scrutiny.

Captive Insurance in Finance Careers

Finance professionals in corporate treasury, risk management and insurance advisory roles increasingly need a working understanding of captive structures, from the initial feasibility study through to ongoing reporting and reinsurance placement. This sits alongside the broader risk and treasury finance skills covered in Learnsignal's CPD courses, and it's a useful specialism for accountants supporting large, risk-exposed organisations.

FAQ

Is a captive insurer regulated the same way as a normal insurance company?
Yes, in substance. A captive must be licensed in its chosen domicile and meet that jurisdiction's solvency and reporting requirements, even though it only insures its own group rather than the public.

Can a small or mid-sized company use a captive?
Directly setting up a standalone captive usually only makes financial sense for larger companies, but smaller businesses can access similar benefits through a group captive or a rent-a-captive cell structure.

Does a captive replace all commercial insurance?
Rarely. Most companies with a captive still buy some commercial insurance for risks the captive doesn't cover, and use reinsurance to manage the portion of risk the captive itself retains.

Captives typically cap the risk they retain by buying reinsurance, often through treaty arrangements that automatically cover the captive's book, giving the parent company insurance economics without unlimited exposure to a single large loss.