Managing general agents (MGAs): what they are and what they mean for buyers

A managing general agent (MGA) is a specialist firm that an insurance company authorizes to find, underwrite, price and issue policies in a defined niche, and often to handle claims, using the carrier's capital and paper. You are buying from the MGA's desk but the contract is with the insurer, so the insurer's financial strength and licensing, not the MGA's, are what stand behind your claims.

How an MGA works

An insurer with capital but little expertise or distribution in a niche, such as restaurant liquor liability, habitational property, cyber for small firms or transportation, signs a contract with an MGA that does have it. The MGA gets underwriting authority within written guidelines: the classes of risk it may write, maximum limits, rates, territories and policy forms. It issues the policy on the insurer's paper, collects premium, and is paid a commission and often a profit share tied to the book's results.

The National Association of Insurance Commissioners' Managing General Agents Act (Model 225) defines an MGA as an agent who manages all or part of an insurer's business and who, together with affiliates, produces and underwrites gross direct written premium equal to or more than 5% of the insurer's policyholder surplus in any quarter or year, and who also adjusts or pays claims over $10,000 per claim or negotiates reinsurance for the insurer. Employees of the insurer, and certain affiliated managers, are excluded. State laws vary in how closely they follow the model, and many firms use the title without meeting the legal definition.

The model's required contract terms give a good picture of how the arrangement is meant to work:

• The insurer can terminate for cause, and can suspend underwriting authority during a dispute.
• The MGA accounts to the insurer and remits funds at least monthly.
• Premium is held in a fiduciary account at an FDIC-insured institution.
• The insurer has access to all records, and the commissioner can examine the MGA's books.
• The contract sets underwriting guidelines (maximum premium volume, rates, types of risk, limits, exclusions, territory, cancellation provisions, maximum policy period).
• The insurer can cancel or nonrenew any policy under applicable law.
• The MGA must carry a surety bond of the greater of $100,000 or 10% of its annual premium for the insurer, capped at $500,000, and the insurer may require errors and omissions coverage.

Why MGAs exist and how big they are

MGAs let insurers enter specialty lines without building a staff, and they let underwriting talent run a focused book with access to rated capital. They also give venture-funded insurtechs a route into the market without the cost of a carrier license. That is why the term shows up so often in Full-stack insurtechs vs MGAs vs digital agencies.

The market is large and growing quickly. AM Best reported that MGAs and other delegated-authority enterprises wrote $108.7 billion in direct premium in 2025, up 17.8% from $92.3 billion in 2024 (Risk & Insurance). Conning's broader estimate of total U.S. MGA premium was about $128 billion for 2025 (Insurance Business). The sources measure different things, so treat them as ranges. All show MGA premium growing well ahead of the overall property-casualty market, with carriers becoming more selective about the capacity they hand out.

MGA, broker, wholesaler or program administrator?

The labels overlap, which is why buyers get confused.

A wholesaler such as Ryan Specialty may also run MGAs, and the same firm can appear as broker on one policy and MGA on another. See wholesale brokers and surplus lines placement: how hard risks get insured for the wholesale channel and program business: niche insurance through program administrators for administered programs. The key difference is whose agent each party is: a wholesale broker usually acts for the retail broker and the insured; an MGA acts for the insurer.

What this means when you buy

Most buyers meet an MGA through their retail agent. You rarely buy directly. Knowing that the product is MGA-written changes what you should check.

1. Identify the insurer on the policy. The declarations page names the insurance company issuing the policy, not the MGA. Ask for that entity's legal name and NAIC number.
2. Check whether it is admitted or non-admitted. Many MGAs write surplus lines business. If the paper is non-admitted, state guaranty fund protection is generally absent; see admitted vs non-admitted insurers: what the difference means and what happens when an insurer fails: guaranty funds and business policies.
3. Check the carrier's financial strength. MGA programs sometimes sit on newer or lower-rated carriers, or on a fronting insurer that cedes most of the risk to reinsurers. The fronting insurer owes you the claim payment, but your recovery ultimately depends on its reinsurers paying it. Look at the AM Best rating and financial size category, not the MGA's marketing.
4. Ask who handles claims. Some MGAs adjust claims in house under delegated authority; others use the insurer's claims team or a third-party administrator. Ask for the claims reporting contact and where to send notice, as late notice can hurt.
5. Confirm the quote is a binder from a named carrier. A binder should name the insurer and be backed by the MGA's authority. Written evidence of binding authority protects you if the MGA's authority is later disputed.
6. Look at multi-year stability. Carriers can pull capacity, change appetite or terminate an MGA. When that happens, the policy usually stays in force to expiration, but renewal is not guaranteed. The insurer may also nonrenew the entire program. Ask your broker how long the program has been on the current paper.

A hypothetical example

Say a 30-seat bar in Ohio gets its liquor liability and general liability through a specialty MGA, bound by the retail agent. The declarations page names a surplus lines insurer rated A- by AM Best. Midway through the year the MGA loses its capacity contract. The existing policy remains valid, since the insurer, not the MGA, is the contracting party, and claims continue under the policy. At renewal the agent must remarket the account, and because the policy was surplus lines, there would be no state guaranty fund if the carrier itself failed. The owner's safeguards were the insurer's rating and strong broker, not the MGA's brand.

Risks regulators and rating agencies watch

Delegating underwriting creates a conflict: the MGA earns commission on volume, while the insurer bears the loss. Pricing discipline, claims oversight and reliance on reinsurance are the usual points of scrutiny for insurers, regulators and rating agencies, and AM Best's 2025 data notes carriers growing more selective about the capacity they deploy. For the buyer, this shows up as tighter underwriting, midterm program changes and occasional capacity withdrawals.

Key takeaways

• An MGA underwrites and issues policies for an insurer under delegated authority; the insurer, not the MGA, is the party bound by your policy.
• Look at the declarations page to identify the actual carrier, check whether it is admitted or surplus lines, and verify its AM Best rating.
• State laws, following the NAIC model, require written MGA contracts, fiduciary handling of premium, carrier audit rights and a surety bond.
• MGA premium is large and growing: AM Best counted $108.7 billion in direct premium for 2025, while Conning estimated about $128 billion.
• Ask about claims handling and program stability; a lost capacity contract affects renewal more than the in-force policy.