Usi vs Vouch: Professional Liability / E&O Insurance

Both are brokers, but USI Insurance Services focuses on CPA firms through the AICPA program, underwritten by CNA, while Vouch markets E&O across accounting, engineering, IT consulting and creative agency firms with an online application.

Kearny Risk organizes these comparisons for firms whose advice, content or technology creates professional exposures.Research updated 2026-09-25

Areas of coverage

USI Insurance Services

  • role: For CPA firms, USI runs the AICPA Professional Liability Program through its USI Affinity division as the endorsed producer, rather than underwriting the policy itself. USI's general Business Services practice separately brokers errors and omissions/professional liability coverage for other business types. AICPA program page and Business Services practice page.company-reportedSource ↗Source ↗
  • insurer: USI's own page states that the AICPA Professional Liability Program is "underwritten by CNA," naming the carrier for that specific program. USI's general Business Services E&O placements do not name an insurer. Direct quote from the AICPA program page; CNA underwrites only this named program, not USI's other professional-liability placements.company-reportedSource ↗
  • eligibility: USI markets the AICPA program to sole practitioners and regional CPA firms. It has offered CPA coverage since 1967 and has been the endorsed AICPA Program provider since 1994. Program page description.company-reportedSource ↗
  • coverage: USI describes the policy as insuring a CPA and their practice against third-party claims that professional services caused financial harm, providing a defense and paying damages for covered claims arising from high-risk situations tied to new clients, changing business plans, or new laws and regulations. Program page description; actual insuring agreements, exclusions and conditions are set by the issued CNA policy form.company-reportedSource ↗
  • limits: The AICPA program page does not publish limit, retention or premium figures; it says coverage plans allow a firm to tailor coverage to its risk profile. Page as read on 2026-09-23.not-disclosedSource ↗
  • services: USI says firms enrolled in the program get supportive claims handling and exclusive access to risk-management resources, including engagement-letter templates, in addition to the coverage itself. Program page description.company-reportedSource ↗
  • application: USI directs CPA firms seeking a quote or renewal to contact USI Affinity, with a dedicated Affinity_APL@usi.com address for the AICPA program specifically. Contact instructions on the AICPA program page.company-reportedSource ↗

Vouch

  • role: 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. Vouch's Professional Services page and Corix's cyber/E&O product page.company-reportedSource ↗Source ↗
  • insurer: 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. Corix disclosures page.company-reportedSource ↗
  • eligibility: Vouch markets professional E&O to accounting and finance, architecture/engineering/construction, IT consulting, management consulting, and marketing and creative agency firms. Vouch's Professional Services page; not an underwriting appetite guarantee for any specific applicant.company-reportedSource ↗
  • coverage: 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. Corix's cyber and E&O product page; actual insuring agreements and exclusions are set by the issued policy.company-reportedSource ↗
  • limits: Neither the Vouch nor Corix pages publish E&O policy limits or retentions. Pages checked on 2026-09-23.not-disclosedSource ↗Source ↗
  • application: 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. Corix product page and Vouch site navigation.company-reportedSource ↗Source ↗

What Are the Key Differences Between USI Insurance Services and Vouch Professional Liability (E&O) Insurance?

CPA-Firm Program Versus Service-Sector Segments

USI's AICPA Professional Liability Program serves CPA firms and includes claims support and risk-management resources. [7] Vouch targets accounting and finance, architecture and engineering, IT and management consulting, and marketing agencies. [10]

Services Included

USI says AICPA program firms get supportive claims handling and exclusive access to risk-management resources, including engagement-letter templates, in addition to the coverage itself. [7] Vouch's reviewed pages describe Corix's application and appointment process for E&O but do not detail comparable risk-management resources bundled with the policy. [1]

What Should You Confirm in USI Insurance Services and Vouch Professional Liability (E&O) Insurance Quotes?

  • If you're a CPA firm, ask USI whether the AICPA program or its general Business Services E&O placement applies. [7]
  • Ask Vouch whether your placement would go through Corix or another program partner, since the named insurers apply to Corix-branded E&O specifically. [2]
  • Neither company's reviewed page publishes limits or retentions; ask both for specific figures. [7] [10]
  • Ask USI what risk-management resources come bundled with the AICPA program specifically, since general Business Services placements may differ. [7]

USI's AICPA program is built for CPA firms; Vouch lists E&O segments including accounting, architecture, consulting and marketing.

Sources reviewed

  1. 01
    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

  2. 02
    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

  3. 03
    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

  4. 04
    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

  5. 05
    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

  6. 06
    Get business insurance

    U.S. Small Business Administration · Six common types of business insurance table · accessed 2026-09-16

  7. 07
    Accountants Professional Liability — USI Affinity

    USI Insurance Services · Quality Professional Liability Insurance Exclusively for CPA Firms; "The AICPA Professional Liability Program, underwritten by CNA, has been offering coverage to CPAs since 1967 and has been the endorsed provider of the AICPA Program since 1994."; supportive claims handling and exclusive access to extensive risk management resources, including engagement letter templates; Email Affinity_APL@usi.com · accessed 2026-09-23

  8. 08
    Business Services

    USI Insurance Services · USI advises clients...and provides solutions for...Errors & Omissions/Professional Liability... · accessed 2026-09-23

  9. 09
    USI Specialty Program Solutions

    USI Insurance Services · USI Affinity delivers high-quality insurance and financial solutions to members of affinity organizations and targeted industry segments...for professional associations, law firms, alumni and collegiate organizations, travel groups, and insurance administrators. · accessed 2026-09-23

  10. 10
    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

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