Captive Insurance Structures Explained: Which is Right for Your Organization?
Summary:
- A captive is an insurance company owned by the business or businesses it insures, rather than a third-party commercial carrier.
- There are six main captive structures: single-parent, group, association, rent-a-captive, protected cell and risk retention group (RRG).
- Each structure balances ownership control, upfront cost, coverage flexibility and risk-sharing differently.
- Single-parent captives offer maximum control, group and association captives spread across multiple members, rent-a-captive and protected cell structures lower the barrier to entry.
- Risk retention groups are a U.S.-specific structure governed by federal law, best suited for liability-focused industries.
- Choosing the right structure depends on company size, risk profile, capital availability and long-term risk management goals.
If you’ve been exploring alternatives to traditional commercial insurance, you’ve likely come across the term “captive.” At its core, a captive is simply an insurance company that a business, or group of businesses, creates and owns to cover its own risks. Instead of paying premiums to an outside carrier, a captive puts you in the driving seat of your own insurance program.
Main Types of Captive Structures
Single-Parent Captive
The single-parent captive, also known as a pure captive, is the most straightforward model. One parent company forms its own dedicated insurance entity to cover its own risks and potentially those of its subsidiaries. Think of this captive as if you were building your own private insurer, tailored entirely around your specific operations.
Because the parent company owns and controls the captive outright, it sets the coverage terms, manages the reserves and retains any underwriting profit that would otherwise go to a commercial insurance carrier. Premiums paid into the captive are generally tax-deductible and the investment income earned on reserves stays within the organization.
The trade-off is that single-parent captives require meaningful capital to establish an ongoing administrative effort to manage, so they typically tend to suit larger, financially stable organizations with predictable insurance spend. For those who fit this, the combination of maximum control, fully customized coverage and a direct line to underwriting profits makes a single-parent captive a good captive option.
Group Captive
A group captive is owned and funded by multiple unrelated companies, usually businesses with a similar risk profile. They pool their resources to form a single shared insurance entity. Rather than each company looking for an insurance solution alone, members collectively use the captive and share in the underwriting profits when losses are low.
Group captives are one of the most accessible entry points into the captive world, as the capital and administrative burden is distributed across the membership. They work especially well for businesses that are too small to justify a single-parent captive but large enough to benefit from more control than a commercial policy.
The peer environment is a significant benefit, as members usually invest in loss prevention because their own results directly affect the group’s performance. The other side of this is that you’re sharing the structure with other companies, which means some loss of individual control.
Association Captive
An association captive is formed and governed by an established industry or trade association on behalf of its members. Professional organizations for architects, healthcare groups or national franchises are some examples of this—put simply, it’s for any established group that shares a common identity and risk exposures.
Because association captives are built around a defined membership with aligned risk, they offer highly tailored, industry-specific coverage for exposures that commercial markets price poorly or won’t cover at all. Members gain enhanced oversight over underwriting decisions, claims management and risk strategy that a standard commercial policy cannot provide.
Association captives are similar to group captives, but the pre-existing organizational structure of the association often makes governance smoother and membership alignment stronger.
Rent-a-Captive
As the name suggests, rent-a-captive lets a business “rent” space within a pre-established captive facility owned by a third-party, typically an insurance company, broker or a financial institution. The company pays a fee to access the captive’s infrastructure and reap many of the benefits of captive participation, without the significant upfront capital and effort required to create a single-parent captive.
This type of captive is a helpful stepping stone, where organizations can experience customized coverage, greater risk of financing control and potential cost savings while testing whether a captive approach fits their needs. It’s also a practical option for businesses that have the right risk profile for a captive but don’t yet have the scale or resources to start one outright.
The main caveat is that, because the participant doesn’t own the captive, they have less influence over its management and governance than in a single-parent or group structure. For many organizations, the low startup cost and fast access to captive benefits more than justify this trade-off.
Protected Cell Captive
A protected cell captive (PCC) is a single insurance entity divided into distinct cells, each with its own legally fenced assets and liabilities. Multiple companies participate in the same overarching structure, but each operates within its own separate compartment. What happens in one cell cannot spill over into another.
This legal separation is the defining feature and key advantage over standard group or rent-a-captive arrangements. Each participant gets the benefit of captive ownership, while being fully insulated from the financial risks of other groups in the captive.
PCCs are popular in many international domiciles and are increasingly common in the U.S. They offer legal isolation of risk at a lower cost than a wholly owned standalone captive, making them a compelling option for mid-sized companies that want the protections of captive ownership without bearing the full build-out cost.
Risk Retention Group
A risk retention group (RRG) is a unique structure established under U.S. federal law, specifically the Liability Risk Retention Act 1986. An RRG is a liability insurance company owned by its policyholders, who must be members of similar or related industries. Once chartered in a single state, it can operate across all 50 states without needing separate licensure in each.
RRGs are specifically designed for liability coverage and they can’t write property insurance or workers’ compensation. They’re commonly used by industries with challenging or expensive liability exposures—healthcare providers, contractors, transportation companies and professional services.
The structure gives members direct ownership and control over underwriting standards and claims management, with the added advantage of multi-state operation under a single charter. Narrower coverage scope, multi-state regulatory obligations and the absence of state guaranty fund protection are some of the limitations of this structure. But for liability-heavy industries, RRGs are often the most efficient and cost-effective path to collectively managed risk.
How Do You Choose the Right Structure?
The right captive structure depends on several factors working together. The size of your organization, your annual insurance spend, your tolerance for risk and what you’re hoping to achieve will all impact the structure that’s best for you.
For larger companies with the capital and desire to go it alone, a single-parent captive offers the greatest control and the highest potential return. For businesses that aren’t quite ready for that, group and association captives provide a more accessible entry point. Rent-a-captive and protected cell structures lower the barrier further, making captive participation realistic for organizations that want to test the waters or benefit from legal risk isolation without the full exposure of a standalone entity. For high-liability industries, RRGs can be a practical and cost-effective choice.
All of these structures share a fundamental philosophy that insurance doesn’t need to be a fixed cost handed off to someone else, and a captive can turn a strategic asset into something you actively manage and benefit from. The structure you choose simply determines how much of that control and opportunity you’re ready to take on yourself.
At Brown Plus, our insurance practice has worked with captive insurers across many domiciles for over 35 years. Whether you’re exploring captive insurance for the first time or looking for specialized tax and advisory support for an existing program, our team is here to help you understand the options and see what’s possible for your organization. Contact us today to get started.