The mental model

Insurance does not move from carrier to insured directly. It moves through a chain of licensed intermediaries who connect the buyer with the right capacity. The structure of that chain depends on three things: whether the carrier is admitted in the state where the buyer is located, what kind of intermediary the buyer is using, and how many carriers are subscribing to the placement.

Most confusion about the insurance market is confusion about which role someone is playing in a particular conversation. The same person at a global broker can be a "retail broker" on a Fortune 500 account and a "wholesale broker" on a small specialty risk placed for another retailer the same week. The same MGA can hold pen authority on one carrier's paper and act as a wholesale broker without authority on another. The terminology is not always clean, and the legal categories often lag the operational reality. What you need is a working map of the roles, the licensing regimes that define them, and the patterns that show up over and over in placements. That is what this chapter provides.

Admitted vs non-admitted

The most fundamental split in the US carrier market is whether a carrier is admitted in a given state. The same carrier may be admitted in some states and non-admitted in others. The status governs who they can sell to, how they get rates and forms approved, and which guaranty fund protections their policies carry.

Why admitted status matters operationally

An admitted carrier has filed its rates and forms with the state, which means policy language and pricing are pre-approved. An admitted policy carries the state guaranty fund safety net for the policyholder. Premium taxes flow through the carrier's filings. Claims handling is regulated by the state's market conduct rules. The downside is loss of flexibility: the carrier cannot deviate from filed forms without re-filing, and rate increases above defined thresholds may need approval before they take effect.

Why non-admitted exists

Non-admitted (or "surplus lines") capacity exists because some risks cannot be efficiently underwritten on admitted paper. The risk may be too unusual, too large, too volatile, or simply outside the appetite of admitted carriers in that state. Non-admitted carriers can write coverages on bespoke wordings, at rates negotiated freely, with terms admitted carriers would never get approved. The trade-off: no guaranty fund protection, no rate-and-form review, and a separate set of compliance steps the producer has to handle.

The surplus lines mechanism

Non-admitted business does not just get written. It moves through a defined regulatory channel called the surplus lines mechanism. Each state has its own version, but the structural elements are similar.

The surplus lines broker

A surplus lines broker (or surplus lines licensee) is a producer specifically licensed by the state to place business with non-admitted carriers. Only a surplus lines broker can effect a non-admitted placement. The retail producer who has the relationship with the buyer is usually not surplus lines licensed; they hand the placement off to a wholesale broker who is licensed.

The diligent search

Most states require the surplus lines broker to perform a "diligent search" of admitted carriers before placing business with a non-admitted carrier. The premise is that surplus lines is supposed to be the access point of last resort, not a workaround for getting better terms. The diligent search typically involves contacting a defined number of admitted carriers (often three) and documenting their declination. Some classes are exempt from the diligent search requirement (typically classes the state has affirmatively designated as appropriate for the surplus lines market, often called "export lists").

Surplus lines tax

Premium written on a non-admitted basis is subject to surplus lines tax in the home state of the insured. Rates vary by state but generally run 3-6% of premium. The surplus lines broker is responsible for collecting and remitting the tax. The Nonadmitted and Reinsurance Reform Act (NRRA) of 2010 simplified this for multi-state risks: only the home state's tax applies to a single placement covering risks in multiple states.

Affidavits and disclosures

A non-admitted policy must include disclosures notifying the policyholder that the insurer is not licensed in the state, the policy is not protected by the guaranty fund, and the buyer should evaluate the carrier's financial strength independently. The surplus lines broker typically files an affidavit with the state confirming the diligent search and the placement. These are mechanical compliance steps, but they are mandatory and they create a paper trail that compliance teams audit regularly.

Producers: agents and brokers

The terminology around insurance distribution is genuinely confusing because the same person can be called different things depending on the law of the state, the type of license, and the kind of relationship they have with the carrier. Let's draw the lines as cleanly as the law allows.

Producer (the umbrella term)

"Producer" is the umbrella term used by most state insurance departments for any licensed individual or entity that solicits, negotiates, or sells insurance. An agent is a producer. A broker is a producer. A surplus lines broker is a producer. The NAIC Producer Licensing Model Act consolidated earlier separate "agent" and "broker" licenses into a unified "producer" license in most states. When you see "producer" on a state filing, it usually just means licensee.

Agent

An agent represents the carrier. Legally, the agent is the carrier's representative; their job is to bind business on behalf of one or more carriers they have an appointment with. An agent's loyalties run to the carrier in the contractual sense, even though they are obviously also serving the customer in practice. Agents typically have binding authority within defined limits (premium thresholds, classes of business, geography) granted by the carrier through an agency agreement.

Broker

A broker represents the buyer. Legally, the broker is the customer's representative; their job is to shop the market on the buyer's behalf and procure coverage from whichever carrier offers the best terms. Brokers do not typically have binding authority. They submit business to carriers, receive quotes, and bind only after the buyer accepts a quote.

Why the agent / broker distinction matters less than it used to

In practice the distinction has eroded substantially. Most large commercial intermediaries operate as brokers regardless of whether their license is technically titled "agent" or "broker," because the customer relationship is the asset and the carrier appointments are downstream of that. The legal distinction matters most in three contexts: (1) whose statements bind the carrier (agent statements often do, broker statements usually do not), (2) how compensation flows (agents usually receive commission from the carrier; brokers may also receive fees from the buyer), and (3) who has fiduciary duty to whom (broker to client; agent to carrier with overlay duties to client). Outside those contexts, the words are often used loosely.

Captive vs independent agents

• Captive agent. Appointed exclusively by one carrier, often selling that carrier's products under that carrier's brand. Common in personal lines (the State Farm or Allstate model). Less common in commercial outside specific career-agent companies.
• Independent agent. Appointed by multiple carriers, can place a customer's business with whichever appointed carrier offers the best fit. The dominant model in small commercial. Trade body: the Independent Insurance Agents & Brokers of America (IIABA, "Big I").
• Exclusive agent. Sometimes used as a synonym for captive; sometimes used for an agent who is not technically captive but has a primary carrier and writes the bulk of their book there.

The retail broker

The retail broker is the producer with the direct relationship to the insured. They are the customer-facing layer of distribution. For a Fortune 500 buyer, the retail broker is a global firm like Marsh, Aon, WTW, Lockton, or Gallagher. For a mid-market commercial buyer, it is typically a national or large regional firm. For a small commercial buyer, it is often a local independent agency.

What the retail broker actually does

• Risk consulting. Identifying coverage gaps, recommending limits, advising on retentions and program structure.
• Submission preparation. Gathering data from the insured, organizing it, formatting it for carriers, supplementing with surveys, loss runs, and exposure schedules.
• Marketing. Approaching carriers, presenting the risk, negotiating quotes.
• Bind and policy services. Issuing binders, managing endorsements, handling certificates of insurance for the insured's vendors and customers.
• Claims advocacy. Pushing the carrier on coverage decisions, reserve adequacy, and claim resolution. The broker's value during a contested claim is one of the most differentiated things they sell.
• Renewal management. Running the placement again every year, with all the data refreshing the cycle requires.

How retail brokers make money

Two principal income streams. Commission from the carrier (typically a percentage of premium, ranging from low single digits on large excess layers to 15%+ on small commercial). Fees from the client, often disclosed and often replacing commission entirely on large accounts. Contingent commissions based on the broker's overall book performance with a carrier are also common but increasingly disclosed and scrutinized after the post-Spitzer regulatory tightening of the mid-2000s. For large accounts, fee-based arrangements with full commission disclosure are now the norm.

What the retail broker does not do

The retail broker often cannot place specialty or non-admitted business directly. For non-admitted placements, the retail broker hands off to a wholesale broker who has the surplus lines license. For complex or large specialty risks, the retail broker engages a specialist wholesaler who has the carrier relationships and market knowledge the retail broker lacks. This handoff is the structural reason wholesale brokers exist.

The wholesale broker

The wholesale broker sits between the retail broker and the carrier on placements that cannot be handled retail-direct. Wholesale brokers do not have direct insured relationships in most cases. Their counterparty is the retail broker. Their value is access (carrier relationships, especially in surplus lines and London) and expertise (specialist knowledge of the line of business).

Three things wholesale brokers do

• Surplus lines placement. Most retail brokers are not surplus lines licensed. When a placement needs to go non-admitted, the retail broker partners with a surplus lines wholesale broker who handles the diligent search, the affidavit filings, the surplus lines tax, and the policy issuance.
• Specialty access. Energy, marine, large casualty, financial lines, cyber, environmental, and other specialty classes are typically dominated by wholesale brokers who maintain the carrier relationships, the market intelligence, and the underwriting analytics for that class. A retail broker handling a small annual portfolio cannot maintain those relationships at depth.
• London access. Most US retail brokers do not have a London office or Lloyd's broker capability. To reach Lloyd's syndicates and IUA companies, the retail broker partners with a wholesale broker that has the London infrastructure. (Cross-reference Chapter 09 on Lloyd's for the full London chain.)

The major wholesale firms

The wholesale market has consolidated significantly over the past decade. Major firms include Ryan Specialty, Amwins, CRC Group, RT Specialty (part of Truist), and Burns & Wilcox. Many global broker firms (Marsh, Aon, WTW, Gallagher) have wholesale divisions that operate alongside their retail divisions, with formal walls between them when they are placing risk on opposite sides of the same transaction.

Compensation and the chain

On a wholesale placement the carrier pays a commission. That commission is split between the wholesale broker and the retail broker per their agreement. The retail broker may also charge the insured a fee, on top of the commission share. For large accounts, the total distribution cost (retail commission + wholesale commission + any fee) is one of the things sophisticated buyers negotiate explicitly. The 2000s-era reforms around contingent commissions and fee disclosure apply across both layers.

Lead vs follow underwriting

A risk that is too big for any one underwriter to carry alone gets placed across multiple carriers, each subscribing to a percentage. The carriers do not all do the same work. One leads. The others follow. This split is the operational backbone of the subscription market, in London and in the US company market alike.

The lead underwriter

The first carrier to write the risk. The lead does the underlying analysis, sets the rate, sets the deductible, drafts or accepts the wording, decides which exclusions are mandatory, and signs the largest line. The lead is the broker's principal counterparty during placement. The lead's signature is what the following market relies on as evidence that the risk has been properly underwritten.

The following market

Carriers who subscribe to the placement at the lead's terms. The follower's analysis is typically much lighter than the lead's: confirming the risk fits their appetite, sizing their line, signing on. The trust the following market places in the lead is structural. If the lead has gotten it wrong, the follower has gotten it wrong with them, but at a much lower per-risk diligence cost.

Quoting market vs binding market

On some placements, multiple carriers quote and the broker awards the lead position to one of them. The "quoting market" is the set of carriers that returned bids. The "binding market" is the carriers that ultimately subscribe. For competitive placements with multiple quotes, the broker is effectively running a price discovery process where the lead role and the line size are both being competed for.

Why some carriers only follow

Leading is expensive. The lead invests in actuarial analysis, legal review, and underwriting time at the front end. Some carriers, particularly smaller specialty carriers and some Lloyd's syndicates, have a strategy of following only: they take a small line on placements led by carriers they trust, accept the lead's terms, and avoid the fixed cost of leading. This works at scale: thousands of small follow lines across many leads can build a profitable book without any of the lead-level investment.

The "lead-and-quote" dynamic in the US company market

Outside Lloyd's, large commercial casualty placements often run on a similar lead/follow model. A primary or low-excess carrier quotes and binds the underlying layer with full underwriting. The towers above subscribe at the lead's terms, often with a follow-form wording. The terms negotiated on the underlying drive everything above. (Cross-reference Chapter 02 on Excess & Umbrella for the full tower structure, and Chapter 09 on Lloyd's for the formal slip-and-scratch mechanics in subscription markets.)

MGAs and program administrators

MGAs and program administrators are intermediaries with binding authority on carrier paper. Where a wholesale broker shops carriers without authority, an MGA writes business on behalf of one or more carriers under a delegated authority agreement. They are covered in depth in Chapter 10. A short orientation here connects them to the rest of the cast.

How an MGA differs from a wholesale broker

The wholesale broker submits business to carriers, gets quotes, and binds only after the carrier agrees. The MGA binds directly under its authority, without going to the carrier on each individual risk. For the retail broker working with an MGA, the experience is faster: the MGA is the decision-maker on bound policies. For the carrier behind the MGA, the MGA is taking on operational and reporting responsibilities the carrier would otherwise have to do itself.

How an MGA differs from an agent

An agent has binding authority too. The principal differences are scope and structure. An MGA typically holds authority on a specific class or program, often with reinsurance behind the carrier's exposure, often with claims authority, often as the operational hub of an entire product offering. An agent's binding authority is typically a small subset of a carrier's broader appetite, with the carrier's full operational machinery handling everything else. The MGA is closer to running a mini-carrier on someone else's paper.

Where MGAs sit in the chain

An MGA can sit at any tier of the distribution chain, depending on the program. Some MGAs are essentially wholesale operations with a binding pen attached. Some are specialty programs sold through retail brokers without a wholesale layer. Some are direct-to-consumer through a digital front end with no intermediary at all. The MGA model is structurally flexible, which is part of why it has grown so quickly. (Chapter 10 covers the program structures, the bordereaux mechanics, and the audit-and-oversight model in detail.)

TPAs and the claims-side cast

The distribution-side cast (brokers, agents, MGAs) gets most of the attention. The claims-side cast is just as structured and just as central to how the market actually runs.

Why this matters for IDP

The claims-side cast generates documents at every step: FNOLs, status reports, reserve memos, settlement authority requests, defense counsel updates, mediation summaries, settlement agreements, recovery analyses. Each role generates a different document set, in a different format, with different audiences. A claims operations stack that can normalize across this cast is doing meaningful work even before any underwriting touchpoint.

Captives, fronting, and RRGs

Several alternative structures sit alongside the standard carrier-broker-insured chain. Each exists for specific reasons and shows up in specific contexts.

Captive insurers

A captive is an insurance company owned by its insureds. A single-parent captive is owned by one corporation and insures that corporation's risks. A group captive is owned by multiple corporations, often in the same industry. Captives let large insureds formalize their self-insurance, deduct premiums for tax purposes, access reinsurance markets, and write coverage that admitted carriers will not write. Major captive domiciles include Vermont, Bermuda, Cayman, and Hawaii. Most Fortune 500 companies have at least one captive somewhere in the structure.

Fronting

Fronting is a structure where an admitted carrier issues a policy in its name, then cedes most or all of the risk to a reinsurer or to the insured's captive. The admitted carrier provides the regulatory standing (the policy is admitted paper from an admitted carrier) but does not retain the underwriting risk. Fronting solves the problem of insureds who need admitted paper but want capacity from non-admitted or captive sources. It is also central to many MGA programs where the actual capital sits behind a fronting carrier.

Risk Retention Groups (RRGs)

RRGs are member-owned liability insurance carriers authorized under the federal Liability Risk Retention Act of 1986. They write only liability coverage and only for their members, who must share an industry or activity in common. RRGs are licensed in one state but can operate in all 50 with simplified registration. Common in specific industries (trucking, healthcare, contractors, professional services) where the members banded together to create their own carrier. Premium volumes are meaningful but not dominant.

Self-insured retentions and large deductibles

A large insured can also self-insure portions of its risk without forming a captive at all. Self-insured retention (SIR) policies have the insured paying losses below a stated threshold directly, with the insurer responding only above the SIR. Large-deductible policies are structurally similar but use a deductible mechanism inside the policy. Both transfer significant operational claim handling to the insured (or a TPA) while keeping the insurer involved for catastrophic loss exposure. Common in workers' comp and auto for large corporate insureds.

Where IDP earns its keep

Distribution and role complexity is, fundamentally, a document complexity problem. Every relationship in the chain (retail to wholesale, wholesale to carrier, MGA to carrier, carrier to reinsurer) generates its own document set, its own data conventions, and its own reporting cadence. The same insured's submission may exist in five different versions across five different intermediaries by the time it reaches the underwriter. Reconciling those versions, understanding which one is authoritative, and pushing clean data forward is exactly the kind of work IDP exists for.

The distribution workflows where Indico shows up

• Submission deduplication. The same risk arrives from multiple brokers chasing the same account. Identifying which submission is the authoritative one and which are duplicates is mechanical work that wastes underwriter time at scale.
• Intermediary chain extraction. Pulling retail broker, wholesale broker, MGA, and any other intermediaries from a submission package and validating against the carrier's appointed-producer registry. Compliance-relevant when commissions need to flow correctly and licensing has to be confirmed.
• Admitted vs non-admitted classification. Routing submissions to the correct underwriting team based on whether the placement will be admitted or surplus lines. Different teams, different forms, different rate filings, different regulatory steps.
• Surplus lines compliance. Confirming the diligent search has been performed (where required), the surplus lines broker is properly licensed, the affidavit is on file, and the surplus lines tax has been calculated. A pre-bind compliance gate.
• Lead/follow analysis. On subscription placements, identifying the lead carrier from the slip or covering note and pulling the lead's terms forward into the following carrier's workspace.
• MGA program intake. For carriers receiving business from MGAs and program administrators, the same heterogeneity-of-format problem covered in Chapter 10. Reframed here as a chain-of-distribution issue rather than just a bordereaux issue.