The simple version

A firm that arranges cover sits between the buyer and the insurer. The obvious way it earns is from arranging the deal, through a cut of the business or a negotiated charge.

The less obvious way is that the insurer pays it too. One firm whose annual filing describes it as the world's leader in this business lists several of those payments in that filing, including one that depends on how the placed business turns out for the insurer.

None of this is hidden. It is written down in a public document, which is exactly why it can be read.

The numbers

• Marsh & McLennan Companies, Inc. filed its third quarter results as Exhibit 99.1 to a Form 8-K with a period of report of October 15, 2026, accepted at 08:05:07 that day (SEC EDGAR, accession 0000062709-26-000256)
• The release reports revenue growth of 8 percent, underlying revenue growth of 5 percent, GAAP operating income up 4 percent, adjusted operating income up 6 percent, third quarter GAAP earnings per share of $1.69 and adjusted earnings per share up 10 percent to $2.03 (same release)
• Risk and Insurance Services revenue was $4.2 billion in the third quarter of 2026, an increase of 7 percent, or 3 percent on an underlying basis (same release)
• That segment's operating income decreased 1 percent to $745 million while its adjusted operating income increased 4 percent to $1.0 billion (same release)
• The segment accounted for approximately 64 percent of the company's total revenue in 2025 and employed around 55,700 people globally; the consulting segment accounted for approximately 36 percent (Marsh & McLennan Companies, Form 10-K for the year ended December 31, 2025, filed February 9, 2026)
• The 10-K states that the brokerage units are compensated for brokerage and consulting services through commissions and fees, and that commission rates and fees vary in amount and depend on coverage provided, the insurer or reinsurer selected, and the capacity in which the broker acts and negotiates with clients (same 10-K)
• The same section states that the brokerage unit also receives other compensation from insurance companies, including payments for consulting and analytics services, compensation for administrative and other services, payments for participation in sponsorship programs, and contingent commissions based on factors such as volume or profitability of its placements, which it says are primarily driven by its MMA unit and parts of its international operations (same 10-K)
• The same section states that the brokerage units also receive interest income on certain funds, such as premiums and claims proceeds, held in a fiduciary capacity for others (same 10-K)

The four directions money arrives from

The first is the straightforward one. The firm is paid for arranging cover, and the filing says the rate varies with what is being covered, which insurer ends up writing it, and the capacity the firm is acting in.

The second is payment from the insurer for work that is not placing your business: analytics, administration, and sponsorship programs. The filing describes these separately from the arranging payment.

The third is the one worth slowing down for. A contingent amount turns on the volume or the profitability of what the firm placed, so part of the pay depends on how that business performs for the insurer afterwards.

The fourth is time. Money moving between a buyer and an insurer sits with the firm on the way through, and the filing says it earns interest on those funds while it holds them.

The actual math the release will not support

The obvious question is how big the third one is. The quarterly release does not answer it: the segment reports $4.2 billion of revenue as a single line, with no split across the four directions.

What can be worked out is what the segment keeps. Operating income of $745 million against $4.2 billion of revenue works out to about 17.7 percent, and the adjusted figure of $1.0 billion to about 23.8 percent. Both are our calculations on published figures.

What cannot be worked out from these documents is the share of that revenue arriving from any one direction. No arithmetic on a single revenue line produces a breakdown the filing does not give.

That is the honest end of the analysis rather than a gap to fill with an estimate. The structure is disclosed; the size of each piece, in this release, is not.

What this means

For anyone buying cover through an intermediary, the useful question is not whether the firm is paid. It is which directions it is paid from, and whether any of them turn on something other than serving the buyer.

That is a question with a documented answer for a public company, because the filing has to describe its revenue. For a small local intermediary there is no equivalent document, and asking directly is the only route.

Nothing here says a firm paid this way serves anyone badly. It says the arrangement exists, that the firm itself writes it down, and that knowing the shape of it is better than assuming the only payment is the visible one.

What this is NOT

This article explains the directions from which an insurance intermediary is paid, using Marsh & McLennan Companies' third quarter 2026 results filed as Exhibit 99.1 to a Form 8-K on October 15, 2026 and its Form 10-K for the year ended December 31, 2025 filed February 9, 2026, both read on October 15, 2026. It is not a view on that company, its stock or its management, and it is not a recommendation to buy, sell or hold anything. It is not a claim that the company or any intermediary has acted improperly or against a client's interest: every arrangement described here is one the company discloses in its own public filing, which is the reason this article can describe it. It is not advice about buying, keeping, changing or cancelling any insurance policy, and it is not a recommendation of any insurer, intermediary or coverage. It does not state what share of revenue comes from any one of the four directions, because the filings read here do not break that out, and the two margin figures in the actual math section are our divisions of published figures rather than amounts the release states. The filing says contingent commissions arise primarily in one of its units and in parts of its international operations, and this article does not describe which of the firm's clients or lines of business they touch. It does not describe how any other intermediary is paid, and arrangements differ by firm, by line of business and by jurisdiction. It takes no position on whether contingent arrangements should exist or how they should be regulated. This is not a political endorsement or criticism of anyone.

Sources

• Marsh & McLennan Companies, Inc., Form 8-K Exhibit 99.1, third quarter 2026 news release, period of report October 15, 2026, read October 15, 2026
• Marsh & McLennan Companies, Inc., Form 8-K filing index for accession 0000062709-26-000256, read October 15, 2026
• Marsh & McLennan Companies, Inc., Form 10-K for the year ended December 31, 2025, filed February 9, 2026, read October 15, 2026