When a shop owner buys an insurance policy, she thinks she has bought it from one company. In reality her premium may pass through four or five different businesses, and the promise printed on her policy may finally be supported by a bank of investors sitting in another country who have never heard her name.
Each of these businesses does a different job. Some of them talk to the customer. Some of them decide the price. Some of them keep the money and pay the claim. And only some of them actually suffer when the claim is bigger than expected. That last point is the one which people get wrong most often, so let us keep it as our main question throughout. For every player we will ask a simple thing: if the loss is very large, whose money goes away?
There are two separate things travelling through the chain, and they travel in opposite directions. Money travels from the customer outward, towards the people who supply capital. Authority travels the other way, from the people who own the capital back towards the people who meet the customer.
A business can hold a lot of authority and no risk at all. That is not a trick. It is the normal design.
Section 1The customer, who is called the insured
Everything starts here. A factory, a restaurant, a trucking company or a family wants protection against something expensive that may or may not happen. They pay a known small amount now, called the premium, so that they do not have to pay an unknown large amount later.
The insured usually keeps the first slice of every loss himself. This is the deductible. It is not a fee. It is the portion of the risk that the customer has agreed to carry on his own, and it exists because it keeps small claims out of the system and keeps the price down.
To give a sense of the total size of this activity, in the United States alone the property and casualty industry recorded a 4.6 per cent increase in direct premiums written in 2025, taking the figure to 1.1 trillion dollars. [1] Life and annuity business added a further 1,513.7 billion dollars of direct written premium in the same year, and health insurance another 1.37 trillion dollars. [2] [3]
Section 2The retail agent and the retail broker
This is the person the customer actually meets. They understand the customer's business, they collect the information, and they place the cover.
Now here is a distinction which sounds like word play but has real legal effect. An agent represents the insurance company. The reference works are quite clear that insurance agents are the legal representatives of the insurers rather than of the policyholders, with the right to perform certain acts on the insurer's behalf, such as to bind coverage. [4] A broker, on the other hand, is described as an intermediary that represents the insured rather than the insurer. [5]
So when the customer speaks to an agent, in a legal sense he is already speaking to the insurance company. When he speaks to a broker, he has someone on his own side of the table. In daily language both are called agents, and this is where confusion begins.
These people are paid a commission, which is a percentage of the premium that they retain as their compensation. [6] Some also receive a contingent commission, which is paid by the insurer and depends on how profitable the business turned out to be. [7] Kindly note the second one carefully, because it gives a person who carries no risk a direct interest in the loss result.
The scale of this layer is large and very fragmented. In the United States there are more than two million individuals and more than 236,000 business entities licensed to provide insurance services. [8]
Who are the big names here
At the top end, the retail brokers are enormous businesses, mostly serving large corporate clients. These are their most recently reported full year revenues.
| Broker | Revenue | Period | Also reported |
|---|---|---|---|
| Marsh McLennan | $27.0 bn | FY2025 | Risk and Insurance Services 17.3 bn, Consulting 9.8 bn [9] |
| Aon | $17,181 mn | FY2025 | About 60,000 employees, clients in more than 120 countries [10] |
| Arthur J. Gallagher | $13,778 mn | FY2025 | Brokerage segment 12,192 mn [11] |
| Willis Towers Watson | $9,708 mn | FY2025 | About 47,000 colleagues, more than 140 countries and markets [12] |
| Brown & Brown | $5.9 bn | FY2025 | 22,888 employees worldwide [13] |
The ordering in the table above is mine, taken from each company's own filings. It is not a published ranking. I could not reach a citable third party ranking of the largest brokers, and I could not verify any revenue figure at all for Acrisure, Alliant, or Hub International. Hub's own site still shows revenue figures from the early 2000s, which must not be used.
Section 3The wholesale broker, and the market where the rules are looser
Sometimes the retail agent cannot place the risk. The building is too old, the industry is too unusual, the loss history is too bad, or the coverage simply does not exist in the standard market. In such cases the retail agent goes to a wholesale broker, who is a specialist in placing difficult business.
The wholesale brokers describe their own purpose as offering retail agents access to stable market capacity in the nonadmitted market, and as being specialists in creating solutions for the most unique and complex risk. [14]
To understand that phrase we need two more terms.
- An admitted insurer is licensed by the state where it does business. Its rates and its policy wordings are filed with the regulator, and its policyholders are protected by the state guaranty fund if it fails.
- A non admitted insurer, also called a surplus lines insurer, is not licensed in that state. It is allowed to write business there but under a different arrangement. It is regulated in its home place, and the state guaranty fund does not stand behind its policies. [15]
Why would anyone accept an insurer with fewer consumer protections? Because of flexibility. The trade press puts it very plainly: these carriers enjoy freedom of rate and form, which gives them flexibility. [16] In simple words, they can invent a new policy wording and charge what they think the risk deserves, without waiting for a regulator to approve the form and the price. For a genuinely new or genuinely nasty risk, that freedom is the only thing which makes cover possible at all.
This is not a small corner of the market. The surplus lines market crossed 100 billion dollars of direct premiums written in 2023 and then grew a further 12.2 per cent in 2024, to 131 billion dollars, which the regulators' own association records as 12 per cent of the total market. [17]
Who are the big names here
The largest specialist distributors are substantial companies in their own right. Ryan Specialty, which is listed, reported revenue growing 21.3 per cent to 3,051.1 million dollars in 2025, split across wholesale brokerage at 1,600.4 million, underwriting management at 1,024.0 million and binding authority at 370.2 million. [18] Amwins states on its own site that it places 44.5 billion dollars of premium annually with 42,819 underwriter relationships, and CRC Group states 33 billion dollars of annual premium with more than 650 carrier partners. Burns and Wilcox describes itself as the largest independent wholesaler and MGA operation in North America with over 2 billion dollars of annual premium. [19]
The Amwins, CRC and Burns and Wilcox figures above carry no year on their own web pages, and they are self reported. They are useful for showing scale. They should not be placed in a table next to audited figures as if they were the same quality of number.
Section 4The MGA, which holds the pen
Now we come to the player which most people outside the industry have never heard of, and which has been growing faster than almost everything else.
A Managing General Agent, or MGA, is an agent that has been given the insurance company's underwriting authority. The standard reference definition is direct: an MGA is a specialised type of insurance agent or broker that, unlike traditional agents and brokers, is vested with underwriting authority from an insurer, and may have authority to bind the insurer, issue policies, appoint producers, arrange for reinsurance and provide other administrative support. [20]
The industry phrase for this is holding the pen. The carrier writes a contract which says, in effect: within this appetite, for these classes of business, up to these limits, at these rates, you may accept risks on my paper without asking me first.
The law also has a formal test for when an agent has become an MGA. Under the model law used by the state regulators, an MGA is a person who manages all or part of the insurance business of an insurer and who produces and underwrites gross direct written premium equal to or more than five per cent of the insurer's policyholder surplus in any one quarter or year, together with either adjusting or paying claims above ten thousand dollars per claim or negotiating reinsurance on the insurer's behalf. [21]
An MGU, or managing general underwriter, is an organisation granted authority by one or more insurers to underwrite and administer insurance programmes for those insurers. [22] A coverholder is the Lloyd's word for it: a company authorised by a Lloyd's managing agent to enter into insurance contracts on behalf of a syndicate. Lloyd's itself notes that a coverholder is also referred to as a Managing General Agent. [23] A programme administrator runs a scheme for a defined group of similar businesses.
Because there are so many labels, the rating agencies now use one umbrella term. In their language, DUAE is used as a blanket term to capture MGAs, MGUs, coverholders, program administrators, program underwriters, underwriting agencies, direct authorizations, and appointed representatives. [24]
What the MGA owns, and what it does not own
This is the heart of the article, so let us be very precise.
The MGA owns the decision. It decides whether to accept the risk and at what price. It often owns the customer relationship, the data, the systems and the servicing. In many programmes it also handles the claims.
The MGA does not own the promise. The policy is issued on the carrier's paper. When the claim is paid, the money comes out of the carrier's balance sheet. If the whole programme turns out to be badly priced and loses money for three years, the loss belongs to the carrier and to the carrier's reinsurers. The MGA's earnings may fall and, in a bad case, the carrier will take the pen away. But the MGA does not write a cheque for the losses.
And because the MGA is handling somebody else's money and somebody else's liability, the model law puts firm duties on it. All funds collected for the account of an insurer must be held by the MGA in a fiduciary capacity in a bank insured by the federal deposit insurer. [25] The MGA must render accounts to the insurer detailing all transactions and remit all funds due on not less than a monthly basis. [26] Separate records must be maintained and the insurer has the right to access and copy all accounts and records relating to its business. [27] And the insurer must, at least semi annually, conduct an on site review of the underwriting and claims processing operations of the MGA. [28]
The premium sitting in an MGA's bank account is not the MGA's money. It is held in trust for the carrier. So questions which sound like ordinary back office hygiene, such as whether the cash received reconciles to the cash deposited, are actually questions about a fiduciary duty owed under a contract, with a carrier audit attached at least twice a year.
How big has this become
Very big, and it is the fastest growing part of the picture. The research house Conning reported in July 2026 that total United States MGA premium reached approximately 128 billion dollars in 2025, with statutory filings showing 102.6 billion dollars of MGA direct premium written, up 12 per cent from 2024, which is more than double the growth rate of the broader property and casualty market. [29]
The rating agency measure, which counts only what appears in a particular note of the insurers' financial statements, shows the same direction. Premium sourced by MGAs in 2024 grew 14.5 per cent to 89.9 billion dollars from 78.6 billion, the fourth consecutive year of growth above ten per cent, and the number of unique MGAs meeting the reporting threshold exceeded 700. [30]
The 128 billion dollar figure and the 89.9 billion dollar figure are different measurements from different bodies for different years. One is a whole market estimate, the other is a statutory reporting tally. They must not be presented as a time series.
One honest gap
I could not find a citable authoritative source stating how an MGA is remunerated. In practice it is a commission on the premium, often with a share of the underwriting profit, but every source I reached defined commission and profit commission for intermediaries or for reinsurance generally, not for MGAs specifically. So please treat the MGA compensation structure as trade knowledge and not as a cited fact.
Section 5The carrier, which is the one that actually pays
The insurance carrier is the insurance company in the ordinary sense of the word. It holds the licence, it holds the capital, and it holds the liability.
The regulators' own definition is usefully blunt. In their licensing process, a risk bearing entity is an insurance carrier that, in their words, writes and pays claims on the policies written. [31] Everything else in this article is arranged around that single sentence.
What the carrier owns:
- The licence. Only a licensed insurer may make the promise in the first place.
- The capital. Called surplus in this industry. The industry body explains that a property and casualty insurer must maintain a certain level of surplus to underwrite risks, and that this financial cushion is known as capacity. [32]
- The reserves. The amount set aside to cover claims incurred but not yet paid. [33]
- The liability. When the claim is valid, the carrier must pay, whether or not it priced the business correctly and whether or not somebody else made the underwriting decision.
The scale of that cushion in the United States is worth stating, because it is the reason the promise is believable. Policyholders' surplus rose to a new high of 1.27 trillion dollars at 31 December 2025, against net premiums written of 976.8 billion dollars and a combined ratio of 92.9 per cent for the year. [34] Across all types of insurer, total cash and invested assets grew 6.7 per cent to 9.6 trillion dollars at the end of 2025. [35]
Who are the big names here
| Rank | Group | Direct premiums written | Share |
|---|---|---|---|
| 1 | State Farm | $108.98 bn | 10.23% |
| 2 | Progressive | $75.88 bn | 7.13% |
| 3 | Berkshire Hathaway | $63.28 bn | 5.94% |
| 4 | Allstate | $55.86 bn | 5.25% |
| 5 | Liberty Mutual | $44.14 bn | 4.14% |
| 6 | Travelers | $41.92 bn | 3.94% |
| 7 | USAA | $36.13 bn | 3.39% |
| 8 | Chubb | $33.33 bn | 3.13% |
| 9 | Farmers | $28.29 bn | 2.66% |
| 10 | Zurich | $18.57 bn | 1.74% |
Notice how flat this market is. The largest carrier in the United States holds only about a tenth of it, and the tenth largest holds under two per cent. [36] Insurance is not a business with three giants. It is a business with thousands of participants and a very long tail.
Section 6The reinsurer, which is insurance for insurance companies
A carrier cannot keep every risk it writes. One hurricane could otherwise finish it. So the carrier buys its own insurance, from a reinsurer.
The regulators describe reinsurance as often referred to as insurance for insurance companies, being a contract in which the insurance company, called the cedent, transfers risk to the reinsurance company, and the latter assumes all or part of one or more insurance policies issued by the cedent. [37]
Two pairs of terms are enough to follow any conversation about it.
- Treaty reinsurance is a contract under which the reinsured company agrees to cede and the reinsurer agrees to assume a portfolio of risks of a particular class of business. Facultative reinsurance is reinsurance of individual risks by offer and acceptance, where the reinsurer keeps the ability to accept or reject and separately price each risk offered. [38] So treaty is a standing arrangement for a whole book, and facultative is one risk at a time.
- Quota share is proportional. The reinsurer indemnifies the ceding company for an established percentage of loss on each risk, in exchange for the same percentage of the premium. Excess of loss is not proportional. The primary insurer keeps all losses up to an agreed retention, and the reinsurer reimburses anything above that level. [39]
How much capital stands behind all of this? Total reinsurance capital was 663 billion dollars at the end of 2025 and is projected at 705 billion dollars for the end of 2026. Of that, traditional reinsurance capital moves from 540 billion to a projected 575 billion, and third party capital, meaning money raised from investors rather than held by reinsurers, moves from 123 billion to a projected 130 billion. [40]
Who are the big names here
The rating agency ranking splits reinsurers by accounting standard, which makes a single clean league table impossible. Among those reporting under the international standard, Munich Re took the top position for 2025 with gross reinsurance revenue of 35.418 billion dollars, followed by Swiss Re at 34.564 billion and Hannover Re at 31.513 billion, with SCOR fourth and China Re fifth. Among the others, ranked on gross written reinsurance premium, Lloyd's took first place with 27.058 billion dollars, Berkshire Hathaway second with 25.470 billion, Reinsurance Group of America third with 17.482 billion, Everest fourth with 12.825 billion and RenaissanceRe fifth with 11.738 billion. [41]
Two reports of the same ranking gave SCOR as 18.902 billion dollars in the body text and 18,092 million dollars in the summary table. One of the two is a transposition. I have therefore given SCOR's rank without a number, rather than print a figure I cannot settle.
Section 7Lloyd's of London, which is a market and not a company
Lloyd's is the part of this industry that confuses newcomers the most, because the name sounds like one insurance company and it is not one.
Lloyd's describes itself as the world's specialist insurance and reinsurance market, and says it is the only insurance marketplace of its kind in the world, where business is brought to specialist syndicates who price and underwrite risk, through brokers and coverholders. [42]
The pieces fit together like this. A syndicate is formed by one or more members joining together to provide capital and accept insurance risks. A managing agent is a company set up to manage one or more syndicates on behalf of the members. The members provide the capital to underwrite policies. Coverholders are third parties authorised by a managing agent to accept insurance risks directly on behalf of its syndicates, and Lloyd's itself calls them a vital distribution channel. Brokers facilitate the risk transfer process between policyholders and underwriters. And the Corporation oversees the market and provides its infrastructure. [43]
At the end of 2025 the market contained 103 syndicates, 57 managing agents, 3,015 approved coverholders and 401 registered brokers. [44] For the 2025 year it reported 57.9 billion pounds of gross written premium, a combined ratio of 87.6 per cent, profit before tax of 10.6 billion pounds and total capital of 49.8 billion pounds. [45]
Lloyd's also has a feature worth knowing, which it calls the Chain of Security. Premiums received by syndicates are held in trust by the managing agents as the first resource for paying claims. Each member must then provide sufficient capital to support its own underwriting. And beyond both of those sits Lloyd's central assets, including the Central Fund, available at the discretion of the Council of Lloyd's to meet any valid claim that cannot be met from the resources of any member. [46]
Section 8The fronting carrier, which rents out its licence
Suppose an MGA has real underwriting talent and reinsurers who are willing to back it, but it has no insurance licence of its own. It needs somebody's paper. This is where a fronting carrier comes in.
Fronting is defined as an arrangement by which an insurer, for a specified fee or premium, issues its policies to cover risks underwritten or otherwise managed by another insurer or reinsurer. [47] Another standard definition describes a front as an insurer that issues a policy and cedes all or a substantial part of the risk to another insurer. [48]
The fronting carriers are quite open about the model. One of the largest states that it provides access to the United States property and casualty insurance market in exchange for ceding fees, and tells programme managers plainly that it provides the paper so that they can do what they do best, granting full access and authority to A rated paper in all fifty states through its admitted carriers. [49]
This is now a meaningful share of the delegated authority world. Approximately 20 per cent of total United States MGA premium is supported through fronting carrier relationships, with fronting carriers generating an estimated 22.6 billion dollars of gross premium during 2025. [50]
The policyholder's contract is with the fronting carrier, so the fronting carrier is legally liable to pay. But it has passed most or all of that liability to reinsurers. This creates a new risk of a different kind. If the reinsurer fails to pay, the fronting carrier still owes the claim. That is precisely why rating agencies began reviewing the collateral arrangements of the fronting companies they rate. [51]
Section 9The captive, where the customer becomes the insurer
Some large organisations decide to stop buying insurance from the market and instead form their own insurance company to cover their own risks. This is a captive.
A captive insurer is generally defined as an insurance company that is wholly owned and controlled by its insureds, and it is this ownership and control by its insureds which distinguishes it from a commercial insurer. [52] A pure captive is any company that insures the risks of its parent and affiliated companies. [53]
Companies do this when insurance in the commercial market is prohibitively expensive, poorly matched to their needs, or not available at all, and to gain pricing stability as the captive matures and expands its own risk retention capability. [54]
On numbers, it is estimated that there are more than 6,000 captives worldwide. [55] Vermont, one of the leading domiciles, had 707 active licensed captives as at 31 December 2025, with 51 formed during 2025. [56] The Cayman Islands regulator reported 744 insurance companies in total as at 30 June 2026. [57]
Section 10The capital markets, where the risk finally leaves the industry
The last step is the most surprising one. Insurance risk can be turned into a security and sold to investors who are not insurance companies at all.
Insurance linked securities are described as financial instruments sold to investors whose value is affected by an insured loss event, allowing insurance and reinsurance carriers to transfer risk to the capital markets. [58] The best known form is the catastrophe bond, which transfers a specific set of risks, typically catastrophe and natural disaster risks, from a sponsor to capital market investors. The investors take on the risk of a catastrophe loss in return for attractive rates of return, and should a qualifying event occur, they lose some or all of the principal they invested and the sponsor receives that money to cover its losses. [59]
Who buys these? Pension funds, sovereign wealth funds, multi asset investment firms and funds, endowments, and some family office investors. They buy because these assets are generally thought to have little or no correlation with the wider financial markets, since their value is linked to insurable events and not to financial ones. [60]
The market is sizeable. Catastrophe bond and insurance linked securities risk capital outstanding stood at 65.6 billion dollars, with 18.9 billion dollars of issuance so far in 2026. [61]
So the chain ends here. A restaurant in Ohio pays a premium, and part of the risk of that premium may end up in a pension fund's portfolio in Europe.
Section 11The claims people, who decide but do not pay
When a loss happens, somebody has to investigate it and decide what is owed. Often this is not the carrier's own staff.
A third party administrator, usually shortened to TPA, is hired to handle claims on behalf of a carrier, an MGA, a risk pool or a self insured employer. One of the largest describes itself as a leading global provider of claims management and outsourcing solutions to insurance companies and self insured entities. [62]
Adjusters come in two varieties, and the difference is defined in state law. An independent adjuster is a licensed adjuster who undertakes, in the statute's own words, on behalf of an insurer, to ascertain and determine the amount of any claim, loss or damage payable under an insurance contract. [63] A public adjuster, by contrast, is a person who for money prepares, completes or files an insurance claim for an insured or third party claimant, and acts on behalf of or aids the insured in negotiating a settlement. [64]
So both of them value the same claim, but one is working for the company and the other for the customer. Neither of them is paying it.
Who are the big names here
Sedgwick describes itself as a global leader in claims administration, benefits administration, loss adjusting and product recall, with more than 33,000 colleagues, 80 countries and 59 per cent of the 500 largest US companies by revenue served. Crawford and Company states that it is the largest publicly listed independent provider of claims management and outsourcing solutions with around ten thousand employees in over seventy countries, managing more than twenty billion dollars of claims annually, and its Broadspire arm reports around 550,000 claims managed. Gallagher Bassett describes itself as a property and casualty third party administrator assisting over 3,500 clients through more than 110 branches with over 4,700 professionals. CorVel is a national provider of risk management solutions and the only independent publicly traded claims management provider. [65]
Most of the figures in that paragraph appear on the companies' own pages without any date. Sedgwick and Gallagher Bassett publish no year at all, and Crawford's own websites disagree with each other on employee count. CorVel publishes no size figure of any kind. These are indicative of scale and nothing more.
Section 12The bureaus, which supply the rules and the numbers
Here is a question a newcomer rarely thinks to ask. If there are thousands of small insurers, how does each one write a legally sound policy wording, and how does a small insurer know what a roofing contractor in Georgia should cost?
The answer is that they mostly do not work it out themselves. They buy it from a shared body. State law separates these bodies into two kinds. A rating organization is defined as an entity whose purpose is the making of rates, rating plans or rating systems. An advisory organization is one which prepares policy forms or makes underwriting rules, or collects and furnishes loss and expense statistics, and acts in an advisory rather than a ratemaking capacity. [66]
Verisk, which opened its doors as an insurance rating bureau in 1971, supplies standardised policy forms, rules and loss costs, and submits forms and loss costs to state regulators on behalf of insurers. It projects average future claim costs from a database of 8.2 billion commercial lines and 21.5 billion personal lines records, spanning 31 commercial and personal lines. [67]
For workers compensation there is a dedicated body. NCCI describes its own mission as fostering a healthy workers compensation system through its role as a licensed rating, advisory and statistical organization. It recommends rates and loss costs which are filed with the states for approval, maintains the classification, rules, plans and forms infrastructure, and administers the residual market plan in 23 states and the pool in 27 states. Its more than 850 employees processed, in 2025, some 3.1 million claims, 3.7 million policies and 6.3 million unit statistical reports. [68]
Not every state uses NCCI. California has its own bureau, the WCIRB, which operates under the state insurance code and is the Insurance Commissioner's designated statistical agent. It was organised in 1915, and its membership has grown from 16 to over 400 companies. [69] Delaware, Indiana, Massachusetts, Michigan and Minnesota also have their own named bureaus. [70]
Two ideas worth knowing from this layer
Experience rating. In workers compensation, an employer's own past payroll and loss record is used to adjust its price up or down. The mechanism recognises the differences among qualifying employers with respect to safety and loss prevention, and measures how the performance of one employer differs predictably from similarly classified employers. The result applied to the policy is either a unity factor of one, a credit modifier below one, or a debit modifier above one. It is a mandatory plan for employers who meet the state's premium eligibility criteria. [71]
Rate filing. A carrier usually cannot simply change its prices. In Florida, an insurer may file at least ninety days before the proposed effective date, which is the file and use route, or it may file within thirty days after the effective date, which is use and file, and in that second case it is potentially subject to an order to return to policyholders any portion of the rate found to be excessive. [72] New York has a statute headed, in its own words, rates or rating plans, no prior approval, prior approval, under which most lines need no prior approval, but the listed lines, which include workers compensation and motor vehicle insurance, may not take effect unless the filing has been approved or thirty days have passed without disapproval. [73]
This is exactly why the freedom of rate and form in the surplus lines market, mentioned earlier, is such a valuable thing.
Section 13The technology vendors, who own the machinery
Every player above runs on software, and almost none of them build it themselves. The core systems handle three things: the policy, the billing and the claim.
The vendors state it in those terms. One offers solutions for policy administration, claims management and billing. Another lists policy, rating, billing and claims as its four modules and speaks of connecting workflows across the entire policy lifecycle. [74]
Sizes, where they are published: Guidewire reported total revenue of 372.5 million dollars in its third quarter of fiscal 2026, up 27 per cent, with annual recurring revenue of 1,147 million dollars, and says more than 570 insurers in 43 countries rely on its products with more than 1,700 successful implementations. Sapiens shows revenue of 542 million dollars for 2024 and 600 or more active customers. Duck Creek states more than 370 customers globally. Insurity says it is trusted by more than 500 insurers, and Majesco says it serves over 120 insurance carriers globally. [75]
Vendor web pages in this category are largely marketing. Most publish no revenue, no employee count and no dated figures, and several publish performance percentages with no baseline, no method and no period. Where I have quoted a customer count above it is the vendor's own claim. Guidewire and Sapiens are the two where a filed or clearly dated financial figure was available.
Section 14The money and medical services around the edges
Two more players deserve a mention because they touch the cash and the claim in ways people do not expect.
Premium finance. Commercial premiums are often too large to pay in one go. A premium finance agreement is defined in state law as a written agreement by which an insured promises to pay a premium finance company the amount advanced to an insurer or to an insurance agent in payment of premiums, together with a service charge as authorised and limited by law. [76] In effect it is a loan taken to buy insurance. The largest such company in North America reports 850,000 loans and 17 billion dollars financed in 2025. [77]
Medical bill review. In workers compensation, the claim is largely a medical bill, so an entire industry exists to check those bills. The published service menus describe clinical review to ensure every charge matches the treatment, coding and rebundling to catch errors, reasonable and customary review to keep pricing aligned with the market, and implant cost review. Wider cost containment groups add bill audit, negotiations, regulatory reporting, nurse triage, utilisation review and several kinds of case management. [78]
Section 15The referees, who carry no risk but decide who may
Three sets of bodies sit above the whole structure. None of them insures anything. All of them can stop a player from operating.
The state regulators
In the United States, insurance is regulated mainly by the states rather than by the federal government. Some federal law does touch the industry, for example the terrorism risk reinsurance programme and the rules governing employer sponsored health plans, but licensing, solvency supervision and rate approval are state matters. Every state, the District of Columbia and the five territories have a Department of Insurance, making 56 jurisdictions in all. [79] Their coordinating body was founded in 1871 and is governed by the chief insurance regulators of those jurisdictions, providing expertise, data and analysis so that commissioners can regulate the industry and protect consumers. [80]
The main tools they use are worth naming.
- Statutory accounting. Insurers must prepare financial statements using Statutory Accounting Principles, which at their core help regulators determine whether an insurer is solvent. These principles focus on the balance sheet and the insurer's ability to meet its obligations, while ordinary company accounting focuses more on informing investors through the income statement. [81]
- Risk based capital. A statutory minimum level of capital based on the insurer's size and on the inherent riskiness of its assets and operations, designed to identify potentially weakly capitalised companies. Above three hundred per cent of the control level, no regulatory intervention is needed. Below two hundred per cent, interventions range from submitting action plans up to a regulatory takeover. Below seventy per cent, a regulator is obligated to take over management of the company. [82]
- Receivership. When a company cannot be saved, the commissioner is typically appointed receiver, and the receiver organises the assets, determines the liabilities and distributes the assets following a priority scheme set by state law. [83]
The rating agencies
AM Best, founded in 1899, calls itself the largest credit rating agency in the world specialising in the insurance industry, and reports on over 16,000 insurance companies worldwide. [84] Its Financial Strength Rating is defined as an independent opinion of an insurer's financial strength and ability to meet its ongoing insurance policy and contract obligations, running from A plus plus and A plus for superior, through A and A minus for excellent, down to D for poor. The guide states plainly that such a rating is not a recommendation to purchase, hold or terminate any policy. [85]
Commercially, these ratings act as a gate. To take one documented example, the largest mortgage buyer in the United States requires the property insurer on a mortgaged home to hold a Financial Strength Rating of B or better from AM Best, or an equivalent from one of three other agencies, and an insurer need only meet the requirement of one agency even if rated by several. [86]
It is widely said in the industry that programmes require A minus rated paper, and the fronting carriers themselves advertise A rated paper. But the one hard, published requirement I could verify sets the floor at B or better. So I have stated the verified floor and left the A minus convention as market practice rather than presenting it as a rule.
The guaranty funds
Finally, what if the carrier itself fails? Every state, plus Puerto Rico, the Virgin Islands and the District of Columbia, has a guaranty mechanism for paying covered claims arising from insolvent insurers licensed in that state. Funding comes from assessments on the solvent insurers, and those assessments are subject to annual limits. [87]
On the property and casualty side, this is a privately funded, nonprofit, state based programme. Liquidation does not halt payment of outstanding claims. Instead it triggers the involvement of the state's guaranty association, which is statutorily empowered to fund the amount needed through mandatory industry assessments. Most states maintain caps of 300,000 dollars on property and casualty claims, though those caps do not generally apply to workers compensation claims. Over nearly five decades the system has paid out more than 35 billion dollars against about 600 insolvencies. [88]
And remember the point from Section 3. This protection exists for admitted insurers. It does not extend to the surplus lines market. [15]
SummaryWho owns what, in one table
| Player | What it owns | What it is liable for | How it earns | Insurance risk |
|---|---|---|---|---|
| Insured | The exposure itself, and the deductible | The first slice of every loss | Not applicable | Yes, up to the deductible |
| Retail agent or broker | The customer relationship | Professional duty of care only | Commission on premium | No |
| Wholesale broker | Access to markets others cannot reach | Professional duty of care only | Commission on premium | No |
| MGA, MGU, coverholder | The underwriting decision, the data, often the servicing | Contract duties to the carrier, and premium held in trust | Commission and fees, sometimes profit share | No |
| Carrier | The licence, the capital, the reserves, the policy | Every valid claim on every policy it issued | Premium minus losses and expenses | Yes, this is the core |
| Fronting carrier | The licence and the paper | Legally the whole claim, though it has ceded most of it away | Ceding and fronting fees | Yes, if its reinsurer fails |
| Reinsurer | A contractual share of the carrier's book | Its agreed share or layer | Reinsurance premium minus ceded losses | Yes |
| Lloyd's members | The capital supporting a syndicate | Their own underwriting, backed by the Chain of Security | Underwriting result | Yes |
| Captive | Its own insurance company | The parent's own retained losses | Savings and investment income | Yes, its owner's risk |
| Cat bond investor | A security | Loss of principal if the trigger is hit | Interest, if no event occurs | Yes |
| TPA or adjuster | The claim process and the file | Errors in handling, not the claim amount | Fee per claim or per hour | No |
| Bureau, for example NCCI | Classifications, forms, loss costs, the shared database | Nothing on the policy | Member and licence fees | No |
| Technology vendor | The systems of record | Its service contract | Licence and subscription | No |
| Premium finance company | A loan to the insured | Credit risk on the borrower | Service charge on the loan | No, but it carries credit risk |
| Regulator | The licence and the authority to withdraw it | Nothing on the policy | Fees and taxes | No |
| Rating agency | An opinion, which acts as a gate | Nothing on the policy | Rating and subscription fees | No |
| Guaranty fund | A rescue mechanism | Capped covered claims of failed admitted insurers | Assessments on solvent insurers | Yes, only after a failure |
ClosingThree things to take away
- Selling, deciding and paying are three different jobs, done by three different businesses. The company on the customer's policy document may not have chosen to accept that customer, and the company that chose the customer may not pay a rupee or a dollar when the claim arrives.
- Follow the balance sheet, not the brand. If you want to know who really carries a risk, ask a simple question: when the loss is bigger than the premium collected, whose capital reduces? That question cuts through every label in this article.
- Fee businesses and risk businesses behave differently, and should be judged differently. A broker or an MGA earns on volume and expense control, so efficiency and process quality are their profit. A carrier or a reinsurer earns on the accuracy of a prediction about the future. Both are respectable businesses. They are simply not the same business, and a person who confuses the two will misread the entire industry.
ReferencesSources, with page and section where available
Every source below was read on 24 August 2026. Where a source is a company's own website with no date printed, that is stated. Where I calculated something myself rather than quoting it, that is stated too.
- United States property and casualty industry direct premiums written, 4.6 per cent increase in 2025 to 1.1 trillion dollars. NAIC, U.S. Property & Casualty and Title Insurance Industries 2025 Full Year Results. content.naic.org
- Life and annuity direct written premium 1,513.7 billion dollars, 2025. NAIC, U.S. Life and A&H Insurance Industry 2025 Annual Results. content.naic.org. Note: the NAIC year end snapshot gives a slightly different 1,510,984 million dollars. The two NAIC documents disagree.
- Health insurance direct written premium increased 15.2 per cent to 1.37 trillion dollars. NAIC, U.S. Health Insurance Industry 2025 Annual Results. content.naic.org
- Agents are the legal representatives of insurers with the right to bind coverage. IRMI glossary, entry Agent. irmi.com. Undated.
- A broker represents the insured rather than the insurer. IRMI glossary, entry Broker. irmi.com. Undated.
- Commission as a percentage of premium retained by agents and brokers. IRMI glossary, entry Commission. irmi.com. Undated.
- Contingent commissions are based on the profitability of the business placed. IRMI glossary, entry Contingent commission. irmi.com. Undated.
- More than two million individuals and more than 236,000 business entities licensed. NAIC, Producer Licensing topic page, last updated 10 February 2025. content.naic.org
- Marsh McLennan full year 2025 revenue 27.0 billion dollars, Risk and Insurance Services 17.3 billion, Consulting 9.8 billion. Marsh McLennan fourth quarter 2025 news release. corporate.marsh.com. Cross checked against SEC XBRL, 26,981 million dollars.
- Aon consolidated total revenue 17,181 million dollars in 2025, about 60,000 employees, more than 120 countries. Aon plc 2025 Annual Financial Report. ir.aon.com
- Arthur J. Gallagher full year 2025 total revenues 13,778 million dollars, Brokerage segment 12,192 million. AJG fourth quarter 2025 earnings release, Exhibit 99.1 to Form 8-K filed 29 January 2026. sec.gov. Total revenues on page 13 of the release, Brokerage segment total revenues on page 12. Both figures read directly from the filed exhibit.
- Willis Towers Watson 2025 revenue 9,708 million dollars, about 47,000 colleagues, more than 140 countries and markets. SEC XBRL company concept, CIK 0001140536, per Form 10-K; and WTW 2025 Form 10-K. investors.wtwco.com
- Brown & Brown approximately 5.9 billion dollars total revenues, 22,888 employees at 31 December 2025. Brown & Brown 2025 Annual Report. investor.bbrown.com
- Wholesale brokers offer retail agents access to stable market capacity in the nonadmitted market. WSIA, Wholesale Value page. wsia.org. Undated.
- Surplus lines definition, and the absence of state guaranty fund protection in that market. NAIC, Surplus Lines topic page, last updated 27 October 2025. content.naic.org
- Excess and surplus carriers enjoy freedom of rate and form. Best's Review, September 2025, page 19. bestsreview.ambest.com
- Surplus lines crossed 100 billion dollars in 2023 and grew 12.2 per cent in 2024 to 131 billion dollars, being 12 per cent of the total market. NAIC, Surplus Lines topic page. content.naic.org. Stamping office comparison: 15 offices reported 81.64 billion dollars in 2024, up 12.1 per cent, representing 63 per cent of all surplus lines premium volume, Best's Review, September 2025, page 17 and page 27.
- Ryan Specialty 2025 revenue 3,051.1 million dollars, up 21.3 per cent, with segment detail. Ryan Specialty fourth quarter 2025 results. ir.ryanspecialty.com
- Amwins 44.5 billion dollars of premium placements and 42,819 underwriter relationships; CRC Group 33 billion dollars of annual premium and more than 650 carriers; Burns and Wilcox over 2 billion dollars of annual premium. amwins.com, crcgroup.com, burnsandwilcox.com. All self reported, none carries a year.
- An MGA is vested with underwriting authority from an insurer and may bind, issue policies and appoint producers. IRMI glossary, entry Managing general agent. irmi.com. Undated.
- Statutory definition of managing general agent, including the five per cent of policyholder surplus and ten thousand dollar per claim tests. NAIC Managing General Agents Act, Model 225, Section 2.D. content.naic.org
- A managing general underwriter is granted authority to underwrite and administer insurance programmes for insurers. IRMI glossary, entry Managing general underwriter. irmi.com. Undated.
- A Lloyd's coverholder, also referred to as a Managing General Agent, is authorised by a managing agent to enter into contracts on behalf of a syndicate; and the definition of a binding authority. Lloyd's, Coverholders page. lloyds.com. Undated.
- DUAE as the blanket term covering MGAs, MGUs, coverholders and programme administrators. Best's Review, September 2025, page 32. bestsreview.ambest.com
- Funds collected for the account of an insurer are held by the MGA in a fiduciary capacity in an FDIC insured institution. NAIC Model 225, Section 4.C. content.naic.org
- The MGA must render accounts and remit funds on not less than a monthly basis. NAIC Model 225, Section 4.B.
- Separate records, and the insurer's right of access and copying. NAIC Model 225, Section 4.D.
- The insurer shall at least semi annually conduct an on site review of the MGA's underwriting and claims processing operations. NAIC Model 225, Section 5.C.
- United States MGA premium approximately 128 billion dollars in 2025, statutory filings 102.6 billion dollars up 12 per cent, more than double the growth of the wider market. Conning press release, Managing General Agents: Reconfiguring the Insurance Value Chain, dated 28 July 2026. conning.com
- MGA sourced direct premiums written grew 14.5 per cent in 2024 to 89.9 billion dollars; more than 700 unique MGAs met the reporting threshold. Best's Review, September 2025, pages 30 and 31. bestsreview.ambest.com
- A risk bearing entity is an insurance carrier that writes and pays claims on the policies written. NAIC, Uniform Certificate of Authority Application page. content.naic.org
- A property and casualty insurer must maintain a certain level of surplus to underwrite risks, known as capacity. Insurance Information Institute, Industry Overview. iii.org. Undated.
- Loss reserve as the amount insurers set aside to cover claims incurred but not yet paid. NAIC Glossary of Insurance Terms. content.naic.org
- Policyholders' surplus 1.27 trillion dollars at 31 December 2025; net premiums written 976,779 million dollars; combined ratio 92.9 per cent. NAIC 2025 Full Year Results, as note 1.
- Total cash and invested assets grew 6.7 per cent to 9.6 trillion dollars at year end 2025. NAIC Capital Markets Special Report, asset mix year end 2025. content.naic.org
- Top ten United States property and casualty groups by 2024 direct premiums written, against a countrywide total of 1,064,869,454 thousand dollars. NAIC, 2024 Market Share Reports for Property/Casualty Groups and Companies by State and Countrywide. content.naic.org. This is the most recent NAIC market share report, so the table year is 2024 while the industry totals quoted elsewhere are 2025.
- Reinsurance as insurance for insurance companies, and the cedent relationship. NAIC Center for Insurance Policy and Research, Reinsurance topic. content.naic.org. Undated.
- Treaty and facultative definitions. Reinsurance Association of America, Glossary of Reinsurance Terms. reinsurance.org. Undated.
- Quota share and excess of loss definitions. RAA glossary as above, and RAA, Fundamentals of Property and Casualty Reinsurance. reinsurance.org
- Total reinsurance capital 663 billion dollars at end 2025, projected 705 billion for end 2026; traditional 540 to 575 billion; third party 123 to about 130 billion. Artemis, reporting AM Best and Guy Carpenter data, article dated 10 August 2026. artemis.bm. This is a secondary source. The underlying Aon and Guy Carpenter reports were not machine readable.
- Global reinsurer rankings for 2025, both accounting bases. Artemis, 17 August 2026, reporting AM Best rankings. artemis.bm, corroborated by Reinsurance News, reinsurancene.ws. The SCOR figure conflicts between the two and is therefore omitted.
- Lloyd's as the world's specialist insurance and reinsurance market. Lloyd's, What is Lloyd's. lloyds.com. Undated.
- Definitions of syndicate, managing agent, member, coverholder, broker and the Corporation. Lloyd's, The Lloyd's Market. lloyds.com
- 103 syndicates, 57 managing agents, 3,015 approved coverholders, 401 registered brokers, at 31 December 2025. Lloyd's, The Lloyd's Market, as above. Returned as structured counts rather than a single sentence, so the exact wording should be checked again before quoting.
- Lloyd's 2025 results: 57.9 billion pounds gross written premium, 87.6 per cent combined ratio, 10.6 billion pounds profit before tax, 49.8 billion pounds total capital. Lloyd's full year results 2025. lloyds.com
- The Chain of Security and its three links. Lloyd's, Capital Structure. lloyds.com. Figures as at 31 December 2025.
- Fronting defined as an arrangement by which an insurer, for a fee or premium, issues its policies to cover risks underwritten or managed by another insurer or reinsurer. RAA Glossary of Reinsurance Terms, entry Fronting. reinsurance.org
- A front company as an insurer that issues a policy and cedes all or a substantial part of the risk to another insurer. IRMI glossary, entry Fronting company. irmi.com. Undated.
- Access to the United States market in exchange for ceding fees; providing the paper; A rated paper in all fifty states through three admitted carriers. State National. statenational.com. Undated.
- About 20 per cent of United States MGA premium supported through fronting, and an estimated 22.6 billion dollars of fronting carrier gross premium in 2025. Conning press release, 28 July 2026, as note 29.
- Rating agency review of collateral arrangements at fronting companies. Reinsurance News, 25 July 2023. reinsurancene.ws
- A captive insurer is wholly owned and controlled by its insureds, and that ownership distinguishes it from a commercial insurer. Captive.com, What is Captive Insurance. captive.com. Undated.
- Pure captive defined as any company that insures risks of its parent and affiliated companies. Captive Insurance Companies Association glossary. cicaworld.com. Undated.
- Reasons for forming a captive, including cover not available in the commercial market and pricing stability. Captive.com, as note 52.
- More than 6,000 captives worldwide. Marsh, Captive Insurance. marsh.com. No date printed on the page.
- 707 active Vermont licensed captives as at 31 December 2025, 51 formed in 2025. Vermont Captive Insurance Association. vcia.com. This is the trade association, not the regulator; the regulator's own PDFs were not machine readable.
- 744 insurance companies in total in the Cayman Islands as at 30 June 2026. Cayman Islands Monetary Authority, insurance statistics. cima.ky. Note: the class B category is where captives sit, but the regulator does not label the count as captives, so the two should not be equated.
- Insurance linked securities as instruments whose value is affected by an insured loss event, allowing transfer of risk to the capital markets. Artemis, What are insurance linked securities. artemis.bm. Undated.
- Catastrophe bond mechanics, including loss of principal on a qualifying event. Artemis, What is a catastrophe bond. artemis.bm. Undated.
- Investor types and the low correlation rationale. Artemis, as note 58.
- Catastrophe bond and insurance linked securities risk capital outstanding 65.6 billion dollars, 2026 issuance 18.9 billion dollars. Artemis Deal Directory dashboard, read 24 August 2026. artemis.bm. Corroborated for 30 June 2026 by Artemis, 14 July 2026.
- A leading global provider of claims management and outsourcing solutions to insurance companies and self insured entities. Crawford & Company investor presentation, June 2026. s25.q4cdn.com
- Independent adjuster acting on behalf of an insurer to ascertain and determine the amount of a claim. Florida Statutes section 626.855, 2024 edition. flsenate.gov
- Public adjuster acting for, or aiding, an insured or third party claimant. Florida Statutes section 626.854, 2024 edition, subsection 1. flsenate.gov
- Claims service provider self descriptions and scale figures. Sedgwick sedgwick.com; Crawford ir.crawco.com and the June 2026 investor presentation; Gallagher Bassett ajg.com; CorVel corvel.com. None of these pages prints a date for its statistics, and Crawford's corporate and investor sites disagree on employee count.
- Statutory definitions of rating organization and advisory organization. Florida Statutes section 627.041, 2024 edition. flsenate.gov
- Verisk opened as an insurance rating bureau in 1971; ISO forms, rules and loss costs; 8.2 billion commercial lines and 21.5 billion personal lines records; 31 lines. Verisk, About. verisk.com, and ISO Forms. verisk.com. The activity statistics on the forms page are labelled only as last year, with no calendar year printed.
- NCCI as a licensed rating, advisory and statistical organization; plan in 23 states and pool in 27; more than 850 employees; 2025 volumes. NCCI, About Us. ncci.com, and NCCI Fact Sheet. ncci.com. The three dollar figures on that fact sheet are deliberately not quoted here, because the infographic's text layer scrambles which label belongs to which number.
- WCIRB as the Insurance Commissioner's designated statistical agent, organised 1915, membership grown from 16 to over 400 companies. WCIRB California, About Us. wcirb.com
- Named independent bureaus in Delaware, Indiana, Massachusetts, Michigan and Minnesota. NCCI, State Administrative Organization Reinsurance Mechanism. ncci.com. Caution: this document names residual market administrators, which is a different function from being the licensed rating organisation. The list of NCCI rating states could not be verified, because the official state map is an image with no text list.
- Experience rating mechanics, credit and debit modifiers, mandatory plan. NCCI, ABCs of Experience Rating. ncci.com. Copyright through 2025.
- Florida file and use and use and file rate filing routes. Florida Statutes section 627.062, 2024 edition, subsection 2(a). flsenate.gov
- New York prior approval regime, including workers compensation and motor vehicle insurance. New York Insurance Law section 2305. nysenate.gov
- Core system scope, policy, billing and claims. Guidewire guidewire.com; Duck Creek duckcreek.com. Undated product pages.
- Vendor scale figures. Guidewire third quarter fiscal 2026 results, quarter ended 30 April 2026. ir.guidewire.com. Sapiens revenue 542 million dollars for 2024 and 600 or more customers, sapiens.com. Duck Creek 370 or more customers, Insurity 500 or more insurers, Majesco 120 or more carriers, all from the vendors' own undated home pages. Guidewire's full year fiscal 2026 results had not been published when this was written.
- Premium finance agreement defined. Florida Statutes section 627.827, 2024 edition. flsenate.gov. Premium finance company defined at section 627.826.
- 850,000 loans and 17 billion dollars financed in 2025. IPFS. ipfs.com. The period 2025 is printed on the page; the customer satisfaction figure on the same page has no method and is not used.
- Bill review and cost containment service taxonomies. CorVel bill review. corvel.com; Enlyte. enlyte.com. The savings percentages published on these pages carry no baseline or period and are deliberately not quoted.
- Every state, the District of Columbia and the five territories have a Department of Insurance; 56 jurisdictions. NAIC, consumer page. content.naic.org, and Map of 56 NAIC Insurance Jurisdictions. content.naic.org
- Founded 1871, governed by the chief insurance regulators of the 50 states, the District of Columbia and five territories. NAIC, About. content.naic.org. Note: no page I read states in so many words that the NAIC is not itself a regulator. That is a safe inference from the structure but it is not a quotable line.
- Statutory Accounting Principles and how they differ from ordinary company accounting. NAIC, Statutory Accounting Principles topic. content.naic.org
- Risk based capital, its purpose and the intervention thresholds. NAIC, Risk Based Capital topic. content.naic.org
- Receivership, the commissioner as receiver, and the priority of distribution. NAIC, Receivership topic. content.naic.org
- AM Best founded 1899, largest credit rating agency specialising in insurance, reporting on over 16,000 insurance companies worldwide. AM Best, About. web.ambest.com
- Financial Strength Rating definition, the full scale, and the statement that it is not a recommendation. AM Best, Guide to Best's Financial Strength Ratings, version 121719. ambest.com
- Property insurer rating requirement of B or better from AM Best, or equivalents, with only one agency's requirement needing to be met. Fannie Mae Selling Guide B7-3-01, page dated 14 December 2022. selling-guide.fanniemae.com
- Guaranty mechanisms in every state plus Puerto Rico, the Virgin Islands and the District of Columbia, funded by capped assessments on solvent insurers. NAIC, Guaranty Associations and Funds topic. content.naic.org
- Property and casualty guaranty system as privately funded and state based; liquidation triggers the association; caps of 300,000 dollars in most states with workers compensation generally excluded from the cap; more than 35 billion dollars paid against about 600 insolvencies. National Conference of Insurance Guaranty Funds, Backgrounder. ncigf.org. Cumulative to the date read; the page is undated. Life and health side: NOLHGA, nolhga.com.
What I could not verify
In the interest of honesty, these things were asked and not answered. How an MGA is remunerated, from any authoritative source. Any figure at all from the Target Markets Program Administrators Association study, because its website fails its own security certificate. The full year 2025 national stamping office premium total, because the trade body hosts its news on a domain that blocks automated reading. A published ranking of the largest brokers or the largest MGAs, both of which sit behind paywalls. The count of property and casualty insurers filing in the United States. Revenue for Sedgwick, Gallagher Bassett, CorVel, Duck Creek, Insurity, Socotra and Majesco. And a United States captive count.