Aon vs Marsh: How Do They Compare for Fiduciary Liability Insurance?

Aon presents Fiduciary Liability as a line its Professional Services Practice helps arrange or advise on for professional-service firms. Aon is describing a global brokerage and advisory service, not issuing the underlying policy. The producing legal entity and carrier for any particular placement are not named on this page. ³Company-reported. Aon’s global professional-services practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement.

Marsh's FINPRO (financial and professional) practice places fiduciary liability insurance for retirement plan sponsors and fiduciaries; MMA also lists fiduciary coverage within its executive and professional liability practice. ^8,9Company-reported. Marsh fiduciary liability page and MMA executive and professional liability page.

The reviewed practice page does not name the insurer or producing legal entity for a specific placement. Ask for both on the quote and binder. ³Not found in reviewed sources. Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement.

The reviewed pages do not name a specific fiduciary liability insurer. Marsh describes its own role as advising on limit assessment and carrier selection, implying the issuing insurer depends on the placement. ⁸Not publicly disclosed. Fiduciary liability page as read on 2026-09-23.

Aon identifies law, accounting and consulting firms as the audience for its global Professional Services Practice. That audience scope does not establish eligibility for every firm or other business. ³Company-reported. Audience described for Aon’s global professional-services practice. It does not establish U.S. state availability or underwriting eligibility for a placement.

Marsh says a fiduciary liability policy typically insures the sponsor organization, the benefit plans it operates, and plan fiduciaries who are directors, officers or employees of the plan sponsor. ⁸Company-reported. Fiduciary liability page, Who is covered? FAQ.

Aon lists Fiduciary coverage within the professional-services practice’s property-and-casualty coverages. The page does not describe covered fiduciary acts, plans, exclusions or policy terms. ³Company-reported. Aon’s marketing description of the brokerage/coverage area. The page is not the insurer’s policy form and does not establish an insured's entitlement to coverage.

Marsh says a fiduciary liability policy typically covers defense costs, damages, judgments and settlements from a fiduciary's breach of duty or from negligence, errors or omissions in administering a benefit plan, but does not cover contractual liability, so it cannot guarantee a plan's obligation to pay benefits due. ⁸Company-reported. Fiduciary liability page FAQs; illustrative policy description, not a specific policy form.

The reviewed page does not state a buyer-specific limit, retention, deductible or other placement terms. Confirm these in the quote, bond or issued policy. ³Not publicly disclosed. Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed.

Confirm in your quote.

Aon says its professional-services advisors use industry knowledge, insights, data and tools to support risk-management and human-capital decisions. This is a company-described advisory service, not a claim outcome or policy benefit. ³Company-reported. Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated.

Marsh says its FINPRO practice helps clients identify red flags in fiduciary controls, builds fiduciary liability programs from limit assessment to carrier selection, and provides claims advocacy to help resolve claims from the outset. ⁸Company-reported. Fiduciary liability page, Why Marsh section.

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Marsh describes its claims advocates as helping clients resolve fiduciary liability claims from the onset, without publishing outcome statistics for this line. ⁸Company-reported. Fiduciary liability page, Why Marsh section.