Construction Captive Insurance: Another Option for Established Contractors and Developers

Captives come in several shapes. A pure or single-parent captive insures the risks of one owner and its affiliates. A group or association captive pools several unrelated firms, often in the same industry, that share part of each other's losses. Rent-a-captive and protected cell arrangements let a business use a cell inside a sponsor's licensed captive, with its assets and liabilities kept separate from the other cells, without forming a company of its own.

Risk retention groups are a federal variation. Under the Liability Risk Retention Act, a risk retention group is owned by members in similar businesses, takes on their liability exposure and is chartered in one state; other states may still require it to register and pay premium taxes before it writes there. A risk retention group writes liability only, so property, auto physical damage and workers' compensation sit outside it.

• Pure or single-parent: one owner and its affiliates; the most control and the most capital
• Group or association: several owners share losses and governance under the program's rules
• Rent-a-captive or protected cell: a segregated cell inside a sponsor's captive, with lower entry capital
• Risk retention group: member-owned liability insurer chartered in one state under federal law

Captive feasibility studies tend to look for the same profile: an established general contractor, developer or civil contractor with several years of loss runs that an actuary can rely on, a meaningful and steady premium spend, a safety and claims culture that already controls losses and owners willing to commit capital for more than one policy year. Firms with that profile sometimes find a captive gives them more say over claims, more visibility into what their losses cost and a way to keep some of the underwriting result when losses run below expectations.

A captive usually fits less well for a young company without credible loss history, a firm whose losses swing widely from year to year, an owner that needs every certificate to show a highly rated admitted carrier with no fronting arrangement or a business focused on a single project. Those firms often get more from a well-built annual program, a project-specific placement or a wrap. A feasibility review is the place to find out, and a finding that a captive does not fit yet is a common and useful result.

Construction captives most often finance a retained layer of general liability, commercial auto liability and, where the law allows the structure, workers' compensation. The captive may take the first several hundred thousand dollars of each loss, with reinsurance or excess carriers above it, and a fronting insurer may issue the policies the contracts and regulators require.

State law sets the boundaries. Texas Insurance Code chapter 964 bars a Texas captive from writing workers' compensation and personal auto and from issuing coverage, including auto liability, that a law requires from an authorized insurer. Arizona bars direct workers' compensation except for a pure captive inside a self-insurance program the Industrial Commission has approved. Nevada lets a captive write excess workers' compensation for its parent and reinsure a certified self-insurer's program but not provide personal auto directly. In California, Labor Code section 3700 recognizes two ways to secure compensation, an authorized insurer or a certificate of consent to self-insure, so a captive is typically paired with one of those rather than standing alone.

Every domicile sets a floor for capital and surplus, and the regulator can require more. Arizona's minimum for a pure captive is $250,000 and for a group captive $500,000; Nevada's is $200,000 for a pure captive and $500,000 for an association captive; Texas requires at least $250,000. A fronting insurer commonly asks for collateral, such as a letter of credit, sized to the losses the captive may owe it, and that collateral can grow as open claims accumulate.

The commitment runs longer than the policy term. Claims from a policy year can stay open for years, so an owner that leaves a group captive or winds down its own company typically remains responsible for its share of those claims until they close. Owners usually model several bad years as well as good ones before committing, because a captive returns money only when losses come in below what was funded.

A captive finances a company's ongoing risk across all of its jobs. A wrap-up insures the parties on one project under a program the owner or GC sponsors, and a project-specific policy dedicates liability limits to one job. The three can coexist: a GC with a captive may still enroll in an owner's OCIP on a large project, and a developer may buy a project-specific policy for a for-sale phase while its captive finances the rest of its portfolio.

Contract exhibits often decide the mix. Many owners and lenders specify carrier ratings, admitted paper or particular endorsements, so the review typically starts by checking whether a fronted captive program can produce the certificates the contracts call for before anyone compares costs.

California's Insurance Code has no chapter for forming captive insurers, so a California business that uses a captive typically forms it in another domicile and, as the home-state insured, may owe California's 3 percent nonadmitted insurance tax. Texas licenses captives under chapter 964 that insure the operational risks of affiliates and controlled unaffiliated businesses and taxes their premium at 0.5 percent within a floor and a cap. Arizona and Nevada both license several captive types, including group and cell structures, under their own statutes and fee or tax schedules.

Those differences shape where a captive is formed, which lines it can write and what taxes the owners owe at home. The state pages below go through each one with the statutes behind it.

Section 831(b) of the Internal Revenue Code lets an eligible small insurance company elect to be taxed only on its investment income. The premium limit is adjusted for inflation; for taxable years beginning in 2026 it is $2,900,000 under Rev. Proc. 2025-32, and the company must also meet a diversification test.

Final regulations published in January 2025 (T.D. 10029) identify certain micro-captive arrangements as listed transactions or transactions of interest, both of which carry disclosure duties. A captive generally falls in the listed category only when it meets both a financing factor, meaning premium was made available to a related party as financing, and a loss ratio under 30 percent over the most recent 10 years; either a financing factor or a loss ratio under 60 percent can make it a transaction of interest. These rules call for a qualified tax advisor, and the insurance review should treat tax structure as a question for that advisor rather than a selling point.