Marsh McLennan Agency Reviews 2026
There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years.
What we could find about customer reviews of Marsh McLennan Agency, a US insurance broker, and why the public evidence is thin.
Marsh McLennan Agency Ratings by Review Source in 2026
Compare ratings on the same 10-point scale, including approximate BBB grade conversions. Open source details for the original score, sample and scope.
| Source | Score | What to Know |
|---|---|---|
| Trustpilot | 6.4 | Trustpilot shows 3.2 out of 5, but from a single 1-star review posted in 2022. One review is too few to say anything about MMA's typical service.8 Source detailsTrustpilot profile for marshmma.com, MMA's own domain. Unclaimed; MMA has not invited reviews. |
| Trustpilot | 2.6 This page rates the Marsh brand (global, largely non-US and household customers), not the US MMA business. | Marsh's page shows 1.3 out of 5 from 115 reviews, mostly one-star, about renewals and service. We show it for context only. It is not an MMA rating, and the UK Marsh Commercial page was not used.7 Source detailsTrustpilot page for marsh.com, the global Marsh brand (mostly individual and non-US customers). This is a different entity from MMA. |
| BBB | 10.0 | BBB gives this profile an A grade. That grade reflects BBB's own criteria, not customer satisfaction or insurer strength.9 Source detailsBBB San Diego-area profile for Marsh & McLennan Agency LLC (accredited). MMA has separate BBB profiles per office; Dayton and Schaumburg both show A+. |
| BBB | 4 | BBB lists four complaints closed in three years and zero customer reviews. One is a commercial vehicle cancellation dispute and one is a personal-lines claim. Not counted in the score.1,2 Source detailsSame San Diego-area profile; zero customer reviews. No client-count denominator. |
Other sources checked (4)
- NerdWallet
We found no NerdWallet review of Marsh McLennan Agency. That does not mean none exists.6
Checked by exact company name; not a full site review.
- J.D. Power
We found no J.D. Power study that rates MMA. That does not mean none exists.4
Checked by exact company name. J.D. Power’s small-commercial study ranks insurers, not brokers.
- NAIC
No NAIC complaint index applies to MMA. We do not borrow any insurer's index.5
NAIC complaint indexes measure insurers, not an agency.
NAIC complaint data covers insurance companies, not brokers, so it does not describe MMA as a broker.
- ConsumerAffairs
We found no ConsumerAffairs reviews of MMA. That does not mean none exist.3
Checked by exact company name; not a full archive review.
Trustpilot shows 3.2 from one review
BBB gives one MMA office an A and lists four complaints
BBB gives the San Diego-area MMA profile an A. That grade is BBB's own rating, not client satisfaction. Each MMA office has its own BBB profile, and other offices we saw show A+.9
That profile lists four complaints closed in three years and no customer reviews. One is a commercial vehicle cancellation dispute, and one is about a personal-insurance claim.1,2
The Marsh brand page is a different company
What Counts Toward the Marsh McLennan Agency Review Score?
Limitations of Marsh McLennan Agency Review Data
- We found no NerdWallet, J.D. Power or ConsumerAffairs reviews of MMA. That doesn't mean none exist.
- One Trustpilot review is too little to judge MMA's service.
- BBB profiles are per office, so one office doesn't speak for all of them.
- MMA is a broker, so reviews of the insurers it places coverage with are a separate matter.
What Should You Ask Marsh McLennan Agency Before You Buy?
- Which office and account team would handle my business?
- Which insurers do you place coverage with, and how do you choose?
- How are you paid, through commission, a fee, or both?
- Who do I call when I have a claim?
Disclosure About Our Marsh McLennan Agency Review Research
Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market.
9 documents, numbered as cited. Open the sources