Marsh McLennan Agency vs 
Vouch: How Do They Compare for Professional Liability (E&O) Insurance?
MMA names E&O, architects-and-engineers, and lawyers professional liability as professional lines. Vouch places E&O for professional-services clients and identifies Corix as one partner with a dedicated E&O product covering negligence, mistakes, or inadequate work that causes client financial loss. 3,9
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. 1,2
Read the Marsh McLennan Agency profile
Read the Marsh McLennan Agency Professional Liability (E&O) Insurance page
What Is Vouch Insurance?
Vouch suits startups and growing companies that want an online application, advisor-led carrier comparisons and contract-requirement reviews; buyers seeking direct insurer purchase or instant quotes should compare digital carriers. 4,5,6,7
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. 11,12,13,14
Key Differences in Professional Liability (E&O) Insurance
Which Professional Work Is Named
Vouch markets professional E&O to accounting and finance, architecture and engineering, IT and management consulting, and marketing agencies. MMA names architects-and-engineers and lawyers lines but does not detail the same sector list in its overview, so businesses in consulting or creative services should ask which specific placement fits. 3 8
Placement Scope and Buying Route
Vouch’s own site routes prospects through an online Get Started flow, while Corix provides a downloadable application for brokers. MMA directs organizations to an adviser or specialist; ask each contact what information is needed before a quote. 3 8
What to Confirm in Professional Liability (E&O) Insurance Quotes
Review Scores
These averages can combine ratings for different products, locations, and customer groups, including approximate BBB grade conversions. Read each review for the sources, scope, and calculation.
Marsh McLennan Agency
Review Score
2 rated sources
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.[8][9][1]
Read Marsh McLennan Agency reviewsVouch
Review Score
1 rated source
Vouch’s four Trustpilot reviews are too few to establish consistent service quality. Ask for references and clarify support after placement.[1][4][6]
Read Vouch reviewsOffering Details
Marsh McLennan Agency vs Vouch: Professional Liability (E&O) Insurance: documented features by provider
| Criteria | Marsh McLennan Agency professional errors omissions (official overview) | Vouch Errors & Omissions Insurance |
|---|---|---|
| Role in This Line | Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. 3Company-reported. 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. | Vouch is a broker, not an insurer, for professional errors & omissions coverage. It lists Errors & Omissions among the core coverages it places for professional-services clients, and one of its named program partners, Corix, has a dedicated E&O product. 8,9Company-reported. Vouch's Professional Services page and Corix's cyber/E&O product page. |
| Issuing Insurer | Confirm in your quote. | Corix's disclosures say its proprietary products, including its E&O line, are issued by State National Insurance Company or United Specialty Insurance Company. That names an insurer for Corix-branded E&O products specifically, not for every Vouch professional-liability placement. 10Company-reported. Corix disclosures page. |
| Who It’s For | Organizations seeking professional liability placement; source does not imply all professions share one policy. 3Company-reported. 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. | Vouch markets professional E&O to accounting and finance, architecture/engineering/construction, IT consulting, management consulting, and marketing and creative agency firms. 8Company-reported. Vouch's Professional Services page; not an underwriting appetite guarantee for any specific applicant. |
| Coverage Features | 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. 3Company-reported. 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. | Corix describes E&O as protecting a business against claims of negligence, mistakes or inadequate work that cause a client financial loss in the provision of professional services, including legal defense costs and any damages awarded, even when the claim is ultimately groundless. 9Company-reported. Corix's cyber and E&O product page; actual insuring agreements and exclusions are set by the issued policy. |
| Limits and Retentions | 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. 3Not publicly disclosed. Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred. | Neither the Vouch nor Corix pages publish E&O policy limits or retentions. 8,9Not publicly disclosed. Pages checked on 2026-09-23. |
| How to Apply | 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. 3Company-reported. 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. | Corix's E&O product page offers a downloadable application and directs brokers to start an appointment process; Vouch's own site routes prospective buyers to its online "Get Started" application flow. 9,8Company-reported. Corix product page and Vouch site navigation. |
Full Comparison
More Marsh McLennan Agency vs Vouch Comparisons
Other Professional Liability (E&O) Insurance Comparisons
Sources
Marsh McLennan Agency
- Who We Are. 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.
- Small Business Insurance Solutions. 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.
- Executive and Professional Liability | MMA. Marsh McLennan Agency; E&O, architects and engineers, and lawyers professional lines are named in the policy suite. Accessed 2026-09-30.
Vouch
- Vouch Homepage. Vouch; Hero identifying Vouch as an insurance broker; Industries; Services; footer identifying Vouch Specialty and qualifying product availability. Accessed 2026-09-15.
- Start a Vouch Application. Vouch; Public first screen: legal business name, website/no-website option, address and location type, applicant role and contact fields, consent, and existing-customer sign-in. Accessed 2026-09-15.
- Carrier Options in One Place. Vouch; 26 November 2025: Choice Without the Chaos; Clarity That Builds Confidence; One Relationship, Many Solutions; final producer/underwriting disclosure. Accessed 2026-09-15.
- Contract Requirement Review. Vouch; Coverage that keeps your deals moving; Tailored to your contract; Effortless Experience (reviews and COIs). Accessed 2026-09-15.
- Insurance for Professional Services Firms. Vouch; Expertise across professional services: Accounting & Finance, Architecture/Engineering/Construction, IT Consulting, Management Consulting, Marketing & Creative Agencies; Core coverages for Professional Services: Errors & Omissions, General Liability, Cyber Liability, Employment Practices Liability, Workers' Compensation. Accessed 2026-09-23.
- Cyber and Errors & Omissions. Corix Insurance; Errors & Omissions insurance provided by Corix helps protect businesses for claims of negligence, mistakes, or inadequate work that causes a financial loss to clients, in the provision of professional services. It includes legal defense costs and damages awarded, even when the claim is groundless. Accessed 2026-09-23.
- Legal Disclosures. Corix Insurance; Policies are issued by State National Insurance Company (NAIC# 12831) or United Specialty Insurance Company (NAIC#12537). Accessed 2026-09-23.
Professional Liability (E&O) Insurance Guide
- FAQ: Professional liability insurance. 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.
- 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.
- Get business insurance. U.S. Small Business Administration; Six common types of business insurance table. Accessed 2026-09-16.
- Professional Liability – US Direct Errors and Omissions Insurance. 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.
