For most of the last century, insurance had a simple pecking order. Carriers held the capital, employed the underwriters, and decided which risks to take. Distribution was something that happened around the edges. That order is gone.
Managing general agents (MGAs) now sit at the operating core of specialty insurance, and carriers that still treat them as a side channel are misreading the market. According to AM Best, U.S. MGA premium reached $108.7 billion in 2025, up 18% from the previous year. The number of MGAs writing over $500 million doubled between 2023 and 2024. Growth is not spreading evenly across thousands of small players. It is concentrating in a handful of strong operators, and capital is chasing them.
A structural shift
Risk has become harder to price. Cyber, climate-exposed property, and marine need granular data and specialist judgment, and generalist underwriting teams inside large carriers cannot deliver either at speed. MGAs can. They have built their businesses around proprietary data, concentrated talent, and purpose-built technology. They launch products in months, where carriers take 18 months or more. In many niches, they also post better loss ratios, and the gap widens as risk gets more complex.
The smartest carriers have stopped trying to close that gap internally. They rent a solution.
The economics are the real story
Speed gets the headlines, but economics explains the boom. Industry ROE recovered to roughly 10% in 2024. Beneath that average, capital-light MGA platforms earn fee-based revenue with no balance-sheet drag, and leading platforms report EBITDA margins of 25-35%.
MGAs look good partly because someone else holds the tail risk. The carrier or reinsurer carries the volatility while the MGA collects the fee. That is a brilliant model when underwriting discipline is strong. The highest-return seat in the value chain is no longer pure risk-bearing. It is risk selection, distribution, and data. But that only holds if the party bearing the risk is choosing partners with real rigor.
Four engines, one flywheel
The boom runs on four reinforcing models:
- Specialty. Cyber, crop, marine, and excess casualty are increasingly MGA-led, because focused platforms beat generalists on speed and data depth.
- Fronting. Fronting carriers turned capacity into a utility, so a 20-person MGA can write nationally from day one.
- Embedded. Insurance sold at the point of sale is projected to reach $700 billion globally by 2030.
- Parametric. Once a curiosity, now mainstream for climate, travel, and event risk, with the MGA designing the trigger and owning the data.
Each feeds the next. Specialty needs fronting capacity, fronting enables embedded distribution, and embedded data makes parametric products viable. Miss one engine, and you are likely to miss the flywheel.
Geopolitics is now an underwriting input
The timing is not accidental. Trade fragmentation, sanctions complexity, and state-sponsored cyberattacks have turned geopolitical risk from a footnote into a pricing variable. Trade credit, marine war, and political violence covers are repricing in real time.
Cyber is where it all collides. Gallagher's 2026 Cyber Insurance Market Outlook sees global cyber premium growing from about $23 billion in 2023 to as much as $50 billion by 2030. MGAs are writing the leading edge of those new exposures, and carriers who cannot see inside those books will find out about problems the hard way.
Five moves for the next 12 months
If MGAs are the growth engine, the carrier's role changes. The winners will look less like underwriting factories and more like fund-of-funds managers, selecting MGAs the way an institution selects asset managers: explicit return hurdles, data-sharing covenants, and clear exit triggers.
Governance is the binding constraint, and it is where we expect the most carriers to stumble. A weakly supervised MGA channel is an adverse-selection machine. The carriers that succeed will industrialize oversight the way they once industrialized claims. Those that treat delegation as a way to outsource accountability will learn that regulators and reinsurers do not accept that argument.
The window is narrowing. The best MGAs already hold multi-year capacity commitments from a small group of forward-leaning carriers, and late movers will compete for the second tier on worse terms and weaker data rights. Strategic Shift expects the market's structure to be largely set by 2028.
- Audit the portfolio. Map every MGA relationship by premium, loss ratio, data flow, and strategic fit. Cut the bottom quartile without sentiment.
- Build the onboarding rails. Legal, data, and operational infrastructure should let you onboard a new MGA in 90 days, not nine months.
- Put geopolitics on the board agenda. Pricing, exposure, and reinsurance triggers need senior oversight, not a line in the risk register.
- Make data a contract term. Granular data, real-time reporting, and audit rights should be standard, not negotiated favors.
- Decide where to build versus partner. Internal MGAs make sense for proprietary data, scarce talent, or regulated lines. Everywhere else, partner.
Geopolitical fracture, climate intensification, capital reallocation, and data-driven distribution are converging, and the MGA model sits at the center of all four. The carriers that earn the best returns will not be the ones writing the most premium. Carriers need to audit MGA relationships by premium, loss ratio, data flow, and strategic fit. Build the legal, data, and operational rails to onboard a new MGA. Renegotiate contracts so that granular data sharing, real-time reporting, and audit rights are standard. Put geopolitical pricing and exposure in front of the board. And decide deliberately where to build an internal MGA, which makes sense for proprietary data, scarce talent, or regulated lines, and where to partner.
This article draws on Strategic Shift's whitepaper The MGA Boom.
