Aon vs biBERK: Professional Liability / E&O Insurance

Aon describes tailored professional-liability structures through its professional-services practice. biBerk says eligible businesses can quote and buy online and submit claims online with phone support.

What Are the Key Differences Between Aon and biBerk Professional Liability (E&O) Insurance?

Form and Coverage Scope

Aon describes professional liability as a structure tailored to the firm and says its practice serves law, accounting and consulting businesses. biBerk frames E&O around a client allegation that an error, omission or negligent act caused financial harm; it names consultants, accountants, real-estate agents and insurance agents among potential buyers. biBerk says it offers Professional Liability in all 50 states, subject to the policy terms. Confirm your profession’s eligibility with either route. [1] [2]

Buyer Fit and Policy Terms

The application experience differs: biBerk describes online quoting, purchasing and claim submission, with phone support. Aon describes an advisor arranging or advising on placement and does not detail a self-service path. biBerk says defense may be covered even when an accusation proves groundless, depending on policy terms; Aon’s public description leaves the form open. Compare the defense wording, insurer, limit and deductible in the issued quote. [1] [2]

What Should You Confirm in Aon and biBerk Professional Liability (E&O) Insurance Quotes?

Ask biBerk for the defense-cost treatment and the exact policy terms for your profession. [1] [2]
Ask Aon who will issue the policy and how to start a quote and report a claim. [1] [2]

Areas of coverage

Aon

role: Aon presents Professional Liability / E&O 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. Aon’s global professional-services practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement.company-reportedSource ↗
eligibility: 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. Audience described for Aon’s global professional-services practice. It does not establish U.S. state availability or underwriting eligibility for a placement.company-reportedSource ↗
coverage: Aon describes professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. 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.company-reportedSource ↗
services: 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. Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated.company-reportedSource ↗
insurer: 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. 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.not-foundSource ↗
limits: 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. Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed.not-disclosedSource ↗

biBerk

coverage: biBerk says professional liability can respond when a client alleges an error, omission or negligent professional act caused financial harm. Entity: biBerk brand; underlying issuing company is policy/state-dependent unless stated. Product: small-business professional E&O. Jurisdiction: United States; availability varies by state unless stated. Limitation: Company-reported; exact issued policy wording and underwriting determine coverage.company-reportedSource ↗
coverage: biBerk says litigation defense may be covered even if the accusation proves groundless, depending on policy terms. Entity: biBerk brand; underlying issuing company is policy/state-dependent unless stated. Product: professional E&O defense. Jurisdiction: United States; availability varies by state unless stated. Limitation: Company-reported; exact issued policy wording and underwriting determine coverage.company-reportedSource ↗
eligibility: biBerk identifies consultants, accountants, real-estate agents and insurance agents as professions that may need E&O. Entity: biBerk brand; underlying issuing company is policy/state-dependent unless stated. Product: small-business professional services. Jurisdiction: United States; availability varies by state unless stated. Limitation: Company-reported; exact issued policy wording and underwriting determine coverage.company-reportedSource ↗
eligibility: biBerk says it provides Professional Liability in all 50 states. Entity: biBerk brand; underlying issuing company is policy/state-dependent unless stated. Product: professional E&O. Jurisdiction: United States; availability varies by state unless stated. Limitation: Company-reported; exact issued policy wording and underwriting determine coverage.company-reportedSource ↗
application: The page describes online quote/purchase and online claim submission with phone support. Entity: biBerk brand; underlying issuing company is policy/state-dependent unless stated. Product: professional E&O. Jurisdiction: United States; availability varies by state unless stated. Limitation: Company-reported; exact issued policy wording and underwriting determine coverage.company-reportedSource ↗

Sources reviewed

01
Professional Services Practice
Aon · Named professional-services audiences and global advisory role, lines 125–128; line offerings and explanations lines 131–190; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule. · accessed 2026-09-30
02
Professional Liability Insurance | Talk To biBerk
biBerk · What Professional Liability covers · accessed 2026-09-28
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
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
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
06
Get business insurance
U.S. Small Business Administration · Six common types of business insurance table · accessed 2026-09-16