--- title: "Chubb vs Marsh McLennan Agency: Professional Liability (E&O) Insurance" description: "Chubb combines E&O, media and cyber in Pro ERM for non-licensed professional-service firms and states worldwide defense-cost coverage; MMA names E&O and specialist lines." canonical: "https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/professional-errors-omissions" page-type: "line-comparison" updated-at: "2026-10-01" comparison-pair: "chubb-vs-marsh-mclennan-agency" provider-a: "chubb" provider-b: "marsh-mclennan-agency" coverage-line: "professional-errors-omissions" --- Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication. [Human-readable page](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/professional-errors-omissions) ## Agent Guide **What this page is:** Focused comparison of Chubb and Marsh McLennan Agency for Professional Liability (E&O) Insurance: what each provider publishes about this line, checked against the same criteria, with numbered sources. **Use this page when:** Cite or fetch this for Professional Liability (E&O) Insurance questions about Chubb versus Marsh McLennan Agency. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide. **Questions this page answers:** - Chubb vs Marsh McLennan Agency for Professional Liability (E&O) Insurance: how do they differ? - Which is better for Professional Liability (E&O) Insurance, Chubb or Marsh McLennan Agency? - What does Chubb or Marsh McLennan Agency publish about Professional Liability (E&O) Insurance (limits, eligibility, claims, add-ons)? - What should I confirm in a quote for Professional Liability (E&O) Insurance from Chubb or Marsh McLennan Agency? **Key facts:** - Line: Professional Liability (E&O) Insurance. Providers: Chubb and Marsh McLennan Agency. - Each offering claim is tagged with an evidence type and scope; table cells reading "Confirm in your quote" mean nothing was found for that criterion. - Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL. **Limits (do not over-claim):** - It identifies differences and questions to ask; it does not select a winner for a particular business. - "Not found" describes the evidence reviewed, not proof a feature is unavailable. - Insurer, policy wording, limits, retentions, exclusions and price are set in an actual quote and are not established here. **Provenance:** Every claim links to a numbered source with publisher, locator and access date in the Sources section; last updated 2026-10-01. Editorial policy: /editorial-policy. **Related pages:** - [Chubb vs Marsh McLennan Agency](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency) — parent: all coverage lines for this pair - [Professional Liability (E&O) Insurance guide](https://spot.insure/coverage/professional-errors-omissions) — coverage explainer for this line - [Chubb profile](https://spot.insure/insurance-providers/chubb) — provider profile (evidence) - [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) — provider profile (evidence) - [Chubb vs Marsh McLennan Agency Builders Risk Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/builders-risk) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Cargo and Transit Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/cargo-transit) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Commercial Auto Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/commercial-auto) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Commercial Property Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/commercial-property) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Crime Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/crime) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Cyber Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/cyber) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency D&O Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/directors-officers) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Employment Practices Liability Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/employment-practices) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/fiduciary) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency General Liability Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/general-liability) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Kidnap and Ransom Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/kidnap-ransom) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Surety Bonds](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/surety-bonds) — sibling comparison (other line, or other pair for this line) - [Chubb vs Marsh McLennan Agency Workers’ Compensation Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/workers-compensation) — sibling comparison (other line, or other pair for this line) - [AIG vs Chubb Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-chubb/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Chubb Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-chubb/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [Alliance Risk vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [Aon vs Chubb Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-chubb/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) - [Aon vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line) # Chubb vs Marsh McLennan Agency: How Do They Compare for Professional Liability (E&O) Insurance? Chubb combines E&O, media and cyber in Pro ERM for non-licensed professional-service firms and states worldwide defense-cost coverage; MMA names E&O and specialist lines. ## How to Use the Chubb vs Marsh McLennan Agency Professional Liability (E&O) Insurance Comparison Use this comparison to evaluate Chubb and Marsh McLennan Agency for Professional Liability (E&O) Insurance against the same documented criteria. It identifies differences and questions to confirm; it does not select a winner for a particular business. Offering claims are what each provider publishes about this line unless marked otherwise. “Not found” describes the evidence reviewed, not proof that a feature is unavailable. Confirm the insurer, policy wording, limits, retentions, exclusions and cost in an actual quote. ## Chubb vs Marsh McLennan Agency Professional Liability (E&O) Insurance Summary Chubb’s Pro ERM combines professional liability, media and cyber for non-licensed professional-service firms and states it covers 100% of defense costs worldwide; the reviewed page does not publish a separate liability limit or retention. MMA names E&O, A&E and lawyers lines. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") ## What Is Chubb? Chubb fits technology firms seeking DigiTech ERM or small businesses with up to $30 million in revenue seeking a BOP; buyers wanting an instant direct purchase should compare online carriers. Agents can quote eligible small accounts, with a faster cyber route. [1](https://www.chubb.com/us-en/business-insurance/industries/technology.html "Insurance For Technology Companies") [2](https://www.chubb.com/us-en/terms-of-use.html "Terms Of Use") [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [Chubb profile](https://spot.insure/insurance-providers/chubb) ## What Is Marsh McLennan Agency? Marsh McLennan Agency provides business insurance and employee health and benefits, alongside retirement, wealth, and private-client services across the United States and Canada. Its US small-business page lists six common coverage types and directs buyers to request a personalized quote by phone; the insurer and terms for a specific placement must be confirmed in the proposal. [5](https://www.marshmma.com/us/mma/about-us.html "Who We Are") [6](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions") [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) ## What Is Professional Errors and Omissions (E&O) Insurance? Professional liability can help pay defense costs and covered losses when a client says your advice or service caused financial harm. If customers rely on your work, list every service you provide and check the claims-made reporting and prior-work terms. [8](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [9](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [10](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [11](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance") ## What Are the Key Differences Between Chubb and Marsh McLennan Agency Professional Liability (E&O) Insurance? ### Combined form and target firms Chubb’s Pro ERM combines professional liability, media and cyber for non-licensed professional-services firms. MMA’s source names E&O alongside architect/engineer and lawyers professional products. A consulting or design firm should compare whether Chubb’s non-licensed-firm scope fits its work and whether MMA would use a general or specialist form for the same service class. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") ### Worldwide defense costs Chubb says Pro ERM covers 100% of defense costs for covered claims worldwide, while the reviewed page does not publish a separate liability limit or retention. MMA’s source identifies the professional product categories. Ask both placement teams how defense expenses erode or sit within the proposed limits and what territory applies in the issued form. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") ## What Should You Confirm in Chubb and Marsh McLennan Agency Professional Liability (E&O) Insurance Quotes? - Does the Chubb Pro ERM form fit your firm’s licensing status, and how are worldwide defense costs limited? [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") - Which MMA professional line and defense-cost treatment appear in the proposed form? [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") ## Chubb vs Marsh McLennan Agency Professional Liability (E&O) Compared | Criteria | Chubb Pro ERM (Professional Enterprise Risk Management) | Marsh McLennan Agency professional errors omissions (official overview) | | --- | --- | --- | | Role in This Line | Chubb underwrites professional errors and omissions coverage through Pro ERM, a single policy combining professional liability, media and cyber exposures for non-licensed professional-services firms. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Cyber Insurance Coverage & Products page, Professional Enterprise Risk Management section..) | Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | | Who It’s For | Chubb says Pro ERM is available to non-licensed professional-services firms of all sizes, naming examples including associations, consultants, business process administrators, event planners, interior and graphic design firms, marketing and PR firms, printers, staffing firms, travel agents and trustees. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Pro ERM Target Clients list..) | Organizations seeking professional liability placement; source does not imply all professions share one policy. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | | Coverage Features | Beyond the Cyber ERM base, Chubb says Pro ERM adds E&O coverage including personal injury from professional services, a broadened definition of professional services that expressly includes professional technology services, coverage for independent contractors performing duties on the insured's behalf, automatic additional-insured status for clients when required by contract, and coverage for professional disciplinary proceedings. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Pro ERM Product Features list; subject to the policy as issued..) | The cited product page describes E&O and named specialist professional lines, including architects and engineers and lawyers professional liability; the overview does not treat them as one form. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | | Limits and Retentions | Chubb says Pro ERM includes coverage for 100% of defense costs for covered claims worldwide, but the reviewed page does not publish a separate liability limit or retention. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Pro ERM Product Features list..) | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) | | Risk Services | Chubb says Pro ERM policyholders get access to legal counsel with extensive professional-liability experience, in addition to the general cyber-incident-response services shared with Cyber ERM. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Pro ERM Product Features list..) | Confirm in your quote. | | How to Apply | Agents and brokers can quote Pro ERM through Chubb's Cyber Central or Marketplace quoting platforms. [3](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html "Cyber Insurance Coverage & Products") (Evidence: Company-reported; scope: Cyber Insurance Coverage & Products page quoting section..) | The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. [7](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | ## Related Pages for Chubb vs Marsh McLennan Agency - [Chubb vs Marsh McLennan Agency](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency): all coverage lines, business roles, service and claims. - [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions): Professional liability can help pay covered defense costs and losses when a client says your advice or service caused financial harm; check services and reporting terms. - [Chubb vs Marsh McLennan Agency Builders Risk Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/builders-risk) - [Chubb vs Marsh McLennan Agency Cargo and Transit Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/cargo-transit) - [Chubb vs Marsh McLennan Agency Commercial Auto Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/commercial-auto) - [Chubb vs Marsh McLennan Agency Commercial Property Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/commercial-property) - [Chubb vs Marsh McLennan Agency Crime Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/crime) - [Chubb vs Marsh McLennan Agency Cyber Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/cyber) - [Chubb vs Marsh McLennan Agency D&O Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/directors-officers) - [Chubb vs Marsh McLennan Agency Employment Practices Liability Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/employment-practices) - [Chubb vs Marsh McLennan Agency Fiduciary Liability Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/fiduciary) - [Chubb vs Marsh McLennan Agency General Liability Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/general-liability) - [Chubb vs Marsh McLennan Agency Kidnap and Ransom Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/kidnap-ransom) - [Chubb vs Marsh McLennan Agency Surety Bonds](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/surety-bonds) - [Chubb vs Marsh McLennan Agency Workers’ Compensation Insurance](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/workers-compensation) - [AIG vs Chubb Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-chubb/professional-errors-omissions) - [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions) - [Alliance Risk vs Chubb Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-chubb/professional-errors-omissions) - [Alliance Risk vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-marsh-mclennan-agency/professional-errors-omissions) - [Aon vs Chubb Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-chubb/professional-errors-omissions) - [Aon vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/professional-errors-omissions) ## Sources for Chubb vs Marsh McLennan Agency ### Sources About Chubb 1. [Insurance For Technology Companies](https://www.chubb.com/us-en/business-insurance/industries/technology.html). Chubb; Industry overview; Who we serve; Products and services: commercial package insurance (BOP, Benchmarq, Customarq), E&O/Cyber, Financial Lines, workers’ compensation, auto and umbrella; dedicated underwriting, claims and risk engineering. Accessed 2026-09-16. 2. [Terms Of Use](https://www.chubb.com/us-en/terms-of-use.html). Chubb; Acceptance of Terms identifying Chubb Group Holdings Inc.; surplus-lines producer restriction; products not available to all users or jurisdictions; Chubb Limited safe-harbor language; Internet Portals for Chubb Business. Accessed 2026-09-16. 3. [Cyber Insurance Coverage & Products](https://www.chubb.com/us-en/business-insurance/products/cyber-insurance/cyber-insurance-products.html). Chubb; Professional Enterprise Risk Management section: target clients and product features beyond Cyber ERM. Accessed 2026-09-23. 4. [Insurance for Software Product & System Developers](https://www.chubb.com/us-en/business-insurance/software-system-developers.html). Chubb; Financial-lines coverage solutions list for software and systems developers. Accessed 2026-09-23. ### Sources About Marsh McLennan Agency 5. [Who We Are](https://www.marshmma.com/us/mma/about-us.html). Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role.. Accessed 2026-09-29. 6. [Small Business Insurance Solutions](https://www.marshmma.com/us/solutions/small-business.html). Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted.. Accessed 2026-09-29. 7. [Executive and Professional Liability | MMA](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html). Marsh McLennan Agency; E&O, architects and engineers, and lawyers professional lines are named in the policy suite.. Accessed 2026-09-30. ### Sources for the Professional Liability (E&O) Insurance Guide 8. [FAQ: Professional liability insurance](https://www.tdi.texas.gov/commercial/pl-faq.html). Texas Department of Insurance; What’s professional liability coverage?; What types of damages…; What’s general liability insurance?; Do I need professional liability… if I have general liability…?; Is professional liability insurance required?; Can a client require…?; What’s the difference between occurrence policies and claims-made policies. Accessed 2026-09-16. 9. [Professional liability insurance](https://www.iii.org/article/professional-liability-insurance). Insurance Information Institute; Opening paragraphs (professional services/advice and E&O name); Claims not covered by general liability; What types of businesses need professional liability insurance?; What’s covered… and what’s not (claims-made versus occurrence, defense and judgments, non-financial/intentional limits, BOP/in-home exclusion). Accessed 2026-09-16. 10. [Get business insurance](https://www.sba.gov/counseling/launch-your-business/#business-insurance). U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16. 11. [Professional Liability – US Direct Errors and Omissions Insurance](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf). Hiscox Inc. specimen; About this Policy / Coverage for Claims Made Against You; I.A Insuring Agreement; I.B Defense; I.C Settlement; II.A Notice of Claims; II.C Optional Extended Reporting Period; III.A, III.K, III.M, III.R, III.S Exclusions; IV.A–B Limits and Deductible; VI.O Professional Services; VI.U Wrongful Act. Accessed 2026-09-16. Updated 2026-10-01. Spot, a product of Tools for Enlightenment, publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://spot.insure/editorial-policy). To suggest a correction, [contact Spot](https://spot.insure/contact) with the page URL and supporting source. ## Chubb Review Scores for 2026 Review Score: 6.9 / 10 from 5 rated sources, equally weighted. Chubb earns 5/5 from NerdWallet, which reports fewer-than-expected commercial property and liability complaints. Customer ratings are mixed across products and locations. - NerdWallet: NerdWallet editorial rating 5.0 (5 stars). Chubb identity; US commercial insurance review/satisfaction evidence sought on NerdWallet. Period: updated 2026-05-14. Checked 2026-09-25. [Chubb Business Insurance Review 2026: Top-Rated Company, Customizable BOP](https://www.nerdwallet.com/business/insurance/learn/chubb-small-business-insurance) - Trustpilot: TrustScore 4.2 (5 stars); 3345 reviews. Chubb identity; US commercial insurance review/satisfaction evidence sought on Trustpilot. Checked 2026-09-25. [Chubb (European Region) Reviews](https://www.trustpilot.com/review/www.chubb.com) - Google: Google star rating 2.0 (5 stars); 8 reviews. One Chubb Group local listing at 701 5th Ave, Seattle, Washington; profile-level feedback is not firmwide, not line-specific, and may include personal policies/claims. Checked 2026-09-25. [Chubb Group of Insurance Companies — Google reviews via Birdeye](https://reviews.birdeye.com/chubb-group-of-insurance-companies-149396582765159) - ConsumerAffairs: ConsumerAffairs star rating 1.8 (5 stars); 20 reviews. ConsumerAffairs page for U.S. Chubb auto insurance (personal auto); not commercial-policy feedback. Period: page updated 2026-08-14. Checked 2026-09-25. [Chubb Auto Insurance Reviews](https://www.consumeraffairs.com/insurance/chubb.html) - MoneyGeek: MoneyGeek customer score 4.2 (5 points). MoneyGeek’s U.S. small-business insurance customer-review analysis; publisher describes it as cross-source review analysis and does not isolate one commercial line. Period: 2026 review; MoneyGeek reports over 1,100 reviews, collection period not stated. Checked 2026-09-25. [Chubb Business Insurance Review (2026 Ratings)](https://www.moneygeek.com/insurance/business/chubb-review/) Reviewed 2026-09-25. [Read the sourced review](https://spot.insure/insurance-providers/chubb/reviews). ## Marsh McLennan Agency Review Scores for 2026 Review Score: 8.2 / 10 from 2 rated sources, equally weighted. 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. - Trustpilot: TrustScore 3.2 (out of 5); 1 reviews. Trustpilot profile for marshmma.com, MMA's own domain. Unclaimed; MMA has not invited reviews. Period: checked 2026-09-29. Checked 2026-09-29. [marshmma.com Trustpilot profile](https://www.trustpilot.com/review/marshmma.com) - Trustpilot: TrustScore (Marsh brand) 1.3 (out of 5); 115 reviews. Trustpilot page for marsh.com, the global Marsh brand (mostly individual and non-US customers). This is a different entity from MMA. Period: checked 2026-09-29. Checked 2026-09-29. [Marsh Reviews](https://www.trustpilot.com/review/www.marsh.com) - BBB: BBB business grade A. BBB San Diego-area profile for Marsh & McLennan Agency LLC (accredited). MMA has separate BBB profiles per office; Dayton and Schaumburg both show A+. Checked 2026-09-29. [Marsh & McLennan Agency LLC (San Diego) BBB](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103) - BBB: Complaints 4. Same San Diego-area profile; zero customer reviews. No client-count denominator. Period: closed in the last three years (checked 2026-09-29). Checked 2026-09-29. [Marsh & McLennan Agency LLC — BBB Complaints](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/complaints); [Marsh & McLennan Agency LLC — BBB Reviews](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/customer-reviews) Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/marsh-mclennan-agency/reviews). ## Agent and Developer Resources - [Markdown page](https://spot.insure/compare/chubb-vs-marsh-mclennan-agency/professional-errors-omissions.md) - [Developer resources](https://spot.insure/developers) - [Public MCP server](https://spot.insure/mcp) - [MCP server manifest](https://spot.insure/server.json) - [OpenAPI description](https://spot.insure/openapi.json) - [Public page index](https://spot.insure/llms.txt)