Glossary

Admitted insurers, non-admitted insurers, RRGs, MGAs and MGUs

A retail-agent guide to insurer status, risk retention groups and delegated underwriting. Learn what admitted, non-admitted, RRG, MGA and MGU labels tell you.

Tobias Lendl Co-Founder & CTO September 17, 2026

Admitted, non-admitted, RRG, MGA and MGU are labels from different parts of insurance. Some identify the insurer’s legal status in a state. Others identify a member-owned insurer. MGA and MGU usually describe work that an insurer has delegated to someone else.

For a retail agent, the first question is simple: who is issuing the policy and who can make the underwriting decision? The answer should come from the declarations, quote and program materials, not the company’s marketing label.

The terms at a glance

TermWhat it tells youHow it affects the placement
Admitted insurerThe insurer is licensed to transact insurance in the relevant state.It identifies the state authorization behind the policy. The issuing entity and authorized line still matter.
Non-admitted insurerThe insurer is not licensed as an admitted insurer in the insured’s home state.The placement may follow a surplus lines route, with eligibility and disclosure rules for that state.
Risk retention group (RRG)A member-owned insurer that writes commercial liability coverage for members with similar exposures.It is limited to liability risks, so it cannot fill property coverage or every commercial insurance need.
Managing general agent (MGA)An underwriting business acting for the insurer that takes on the policy risk.Its agreement determines which risks it can price, underwrite, quote, bind, issue or service.
Managing general underwriter (MGU)An industry title used for a delegated underwriting operation.The title alone does not establish authority. The program documents do.

Admitted and non-admitted describe state status

The NAIC glossary defines an admitted company as an insurer licensed to do business in a state and a non-admitted insurer as one not licensed to do business in a given state. The designation is state-specific. A company can be admitted in one jurisdiction and non-admitted in another.

That status matters for the route used to place a policy. The NAIC describes surplus lines as specialized property and casualty coverage available through non-admitted insurers when coverage is unavailable from admitted insurers. A licensed surplus lines broker selects an eligible insurer and completes the reporting, tax and disclosure steps that apply in the risk state.

Non-admitted status leaves several underwriting questions unanswered: the insurer’s financial condition, the coverage offered, whether the account qualifies and whether the policy can be bound. The insurer remains subject to oversight in its domiciliary jurisdiction, while the surplus lines transaction follows the rules of the insured’s home state.

For E&S terminology, see E&S vs. surplus lines insurance.

RRGs are member-owned liability insurers

The NAIC describes risk retention groups as liability insurance companies owned by their members. They can write commercial liability coverage for members with similar exposures. They cannot write property insurance, workers’ compensation or a broad mix of unrelated commercial risks. Every insured in the group is also an owner. An RRG is formed under the federal Liability Risk Retention Act and is domiciled in one state; it may register to write liability coverage in other states.

This structure makes RRGs different from a conventional insurer or a general-purpose specialty market. Review the group’s membership criteria, the coverage form, the issuing entity and the state-specific registration position before presenting terms. Federal law also requires a policy notice explaining that the RRG may not be subject to every state insurance law and that guaranty-fund protection is unavailable if the RRG becomes insolvent.

MGA and MGU describe delegated authority

An MGA works for the insurer that takes on the policy risk. Where its agreement allows it, the MGA can price the risk, underwrite it, quote, bind, issue policies, collect premiums or handle other work for that insurer. One MGA may bind within a program while another can only gather information and send a recommendation to the insurer.

MGU is common industry shorthand for an underwriting-focused delegated operation. Its title does not establish what it can do for an insurer. The program agreement does.

Our guide to Wholesale brokers, MGAs and retail brokers covers how those roles can appear in the placement workflow.

Read the documents behind the label

Start with the legal name of the issuing insurer and the risk state. Establish whether the policy is admitted there, non-admitted through a surplus lines route or issued by an RRG. If an MGA or MGU is involved, find out what it can do on the insurer’s behalf and whether a referral remains necessary before binding.

For an RRG, establish that the insured is eligible for membership and that the policy addresses the liability exposure at issue. Then read the quote, declarations, policy form, exclusions, conditions, limits and notices. The label describes part of the placement. The policy and authority documents show what the insured is actually buying and who may act on it.

Nomos can review the account, the requested coverage and the market route before we approach a specialty market. The retail agent keeps the client relationship. Send the submission package and any quotes or declinations already received, and we will identify what else the placement needs.

Short answers.

Is an MGA an insurance company?

An MGA acts for the insurer that takes on the policy risk. Its agreement may allow it to price risks, underwrite, quote, bind or change terms for that insurer. The agreement and applicable state law define the MGA's authority.

Is an RRG the same as a non-admitted insurer?

No. An RRG is a member-owned insurer that writes commercial liability coverage for members with similar exposures. It cannot be used for property coverage or every commercial insurance need, and its state registration and policy-notice rules are separate from a surplus lines placement.

Does non-admitted mean unregulated?

No. A non-admitted insurer is not licensed in the insured's home state. For a surplus lines placement, the insurer and transaction remain subject to the relevant domiciliary and state surplus lines rules.

What is the difference between MGA and MGU?

The terms are often used for delegated underwriting operations, but MGU is not a consistently separate statutory category. The NAIC's managing general agents model act notes that the terminology was debated. Confirm the specific authority instead of relying on the title.

Tobias Lendl

Co-Founder & CTO

Tobias started building software at 13. A two-time global hackathon winner, he wrote software for the Austrian government and built systems handling terabytes of satellite data, doing all of this before graduating from Austria's top CS school, HTL Spengergasse. He has since left TU Vienna to build Nomos.

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