---
title: "biBerk vs USI Insurance Services: Professional Liability (E&O) Insurance"
description: "USI describes CPA professional-liability coverage for third-party claims that professional services caused financial harm; biBerk describes alleged professional errors causing financial harm."
canonical: "https://spot.insure/compare/biberk-vs-usi/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-10-01"
comparison-pair: "biberk-vs-usi"
provider-a: "biberk"
provider-b: "usi"
coverage-line: "professional-errors-omissions"
---

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[Human-readable page](https://spot.insure/compare/biberk-vs-usi/professional-errors-omissions)

## Agent Guide

**What this page is:** Focused comparison of biBerk and USI Insurance Services 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 biBerk versus USI Insurance Services. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- biBerk vs USI Insurance Services for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, biBerk or USI Insurance Services?
- What does biBerk or USI Insurance Services 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 biBerk or USI Insurance Services?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: biBerk and USI Insurance Services.
- 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:**
- [biBerk vs USI Insurance Services](https://spot.insure/compare/biberk-vs-usi) — 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
- [biBerk profile](https://spot.insure/insurance-providers/biberk) — provider profile (evidence)
- [USI Insurance Services profile](https://spot.insure/insurance-providers/usi) — provider profile (evidence)
- [biBerk vs USI Insurance Services Cyber Insurance](https://spot.insure/compare/biberk-vs-usi/cyber) — sibling comparison (other line, or other pair for this line)
- [biBerk vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/biberk-vs-usi/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs biBerk Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-biberk/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-usi/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs biBerk Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-biberk/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-usi/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs biBerk Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-biberk/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-usi/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)

# biBerk vs USI Insurance Services: How Do They Compare for Professional Liability (E&O) Insurance?

USI describes CPA professional-liability coverage for third-party claims that professional services caused financial harm; biBerk describes alleged professional errors causing financial harm.

## How to Use the biBerk vs USI Insurance Services Professional Liability (E&O) Insurance Comparison

Use this comparison to evaluate biBerk and USI Insurance Services 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.

## biBerk vs USI Insurance Services Professional Liability (E&O) Insurance Summary

USI describes defense and damages for covered third-party claims involving CPA professional services; biBerk describes an alleged-error trigger and possible groundless-claim defense. [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk") [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity")

## What Is biBerk Insurance?

biBerk focuses on small businesses and describes a direct online path to answer business questions, choose coverage and pay, with an insurance expert available to help. Before you plan around online checkout, confirm that your state and the insurance you need are supported; biBerk says availability depends on both. [1](https://www.biberk.com/ "Small Business Insurance From biBerk | Get A Quote Online") [2](https://www.biberk.com/about-biberk "About biBerk | Making Small Business Insurance Simple")

[biBerk profile](https://spot.insure/insurance-providers/biberk)

## What Is USI Insurance Services?

USI suits software and hardware companies from seed stage through IPO seeking consultative broker support; buyers wanting a self-serve quote should compare digital agencies. Insurer commissions are typical and contingent compensation may also apply. [4](https://www.usi.com/about-usi "The Power of ONE") [5](https://www.usi.com/property-casualty/technology/ "Technology Insurance") [6](https://www.usi.com/commissions-fees/ "Commissions and Fees")

[USI Insurance Services profile](https://spot.insure/insurance-providers/usi)

## 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. [10](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [11](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [12](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [13](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

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

### Coverage Description

USI says its USI Affinity division is the endorsed producer for the AICPA Professional Liability Program for CPA firms, which is underwritten by CNA; it separately brokers E&O for other business types. biBerk describes an E&O trigger for alleged professional errors causing financial harm. USI’s selected claim specifies a program role, while biBerk’s specifies a coverage response; compare the actual issued carrier and terms for your firm. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [9](https://www.usi.com/property-casualty/business-services/ "Business Services") [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk")

### Policy Terms and Scope

USI’s AICPA program page says it provides claims-handling support and risk-management resources such as engagement-letter templates; biBerk describes client allegations of professional errors causing financial harm. Those are different service and coverage features. Ask which program resources and policy defense provisions are included for your firm. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk")

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

- Ask USI whether the AICPA program fits your firm structure and what limits are available. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity")
- Ask biBerk which insurer and policy form apply to your CPA services. [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk")

## biBerk vs USI Insurance Services Professional Liability (E&O) Compared

| Criteria | biBerk Professional Liability / E&O | AICPA Professional Liability Program (USI Affinity) |
| --- | --- | --- |
| Role in This Line | Confirm in your quote. | 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. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [9](https://www.usi.com/property-casualty/business-services/ "Business Services") (Evidence: Company-reported; scope: AICPA program page and Business Services practice page..) |
| Issuing Insurer | Confirm in your quote. | 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. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") (Evidence: Company-reported; scope: Direct quote from the AICPA program page; CNA underwrites only this named program, not USI's other professional-liability placements..) |
| Who It’s For | biBerk identifies consultants, accountants, real-estate agents and insurance agents as professions that may need E&O. [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk") (Evidence: Company-reported; scope: 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..)<br><br>biBerk says it provides Professional Liability in all 50 states. [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk") (Evidence: Company-reported; scope: 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..) | 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. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") (Evidence: Company-reported; scope: Program page description..) |
| Coverage Features | biBerk says professional liability can respond when a client alleges an error, omission or negligent professional act caused financial harm. [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk") (Evidence: Company-reported; scope: 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..)<br><br>biBerk says litigation defense may be covered even if the accusation proves groundless, depending on policy terms. [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk") (Evidence: Company-reported; scope: 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..) | 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. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") (Evidence: Company-reported; scope: Program page description; actual insuring agreements, exclusions and conditions are set by the issued CNA policy form..) |
| Limits and Retentions | Confirm in your quote. | 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. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") (Evidence: Not publicly disclosed; scope: Page as read on 2026-09-23..) |
| Risk Services | Confirm in your quote. | 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. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") (Evidence: Company-reported; scope: Program page description..) |
| How to Apply | The page describes online quote/purchase and online claim submission with phone support. [3](https://www.biberk.com/small-business-insurance/professional-liability-insurance "Professional Liability Insurance | Talk To biBerk") (Evidence: Company-reported; scope: 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..) | 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. [7](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") (Evidence: Company-reported; scope: Contact instructions on the AICPA program page..) |

## Related Pages for biBerk vs USI Insurance Services

- [biBerk vs USI Insurance Services](https://spot.insure/compare/biberk-vs-usi): 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.
- [biBerk vs USI Insurance Services Cyber Insurance](https://spot.insure/compare/biberk-vs-usi/cyber)
- [biBerk vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/biberk-vs-usi/workers-compensation)
- [AIG vs biBerk Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-biberk/professional-errors-omissions)
- [AIG vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-usi/professional-errors-omissions)
- [Alliance Risk vs biBerk Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-biberk/professional-errors-omissions)
- [Alliance Risk vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-usi/professional-errors-omissions)
- [Aon vs biBerk Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-biberk/professional-errors-omissions)
- [Aon vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-usi/professional-errors-omissions)

## Sources for biBerk vs USI Insurance Services

### Sources About biBerk

1. [Small Business Insurance From biBerk | Get A Quote Online](https://www.biberk.com/). biBerk; Online purchase steps, lines 183–197; small-business audience and industries, lines 231–238; state/type availability, lines 290–295. Accessed 2026-09-28.
2. [About biBerk | Making Small Business Insurance Simple](https://www.biberk.com/about-biberk). biBerk; Making small business insurance simple and direct sales without an insurance broker, lines 72–89; online assistance, lines 76–78. Accessed 2026-09-28.
3. [Professional Liability Insurance | Talk To biBerk](https://www.biberk.com/small-business-insurance/professional-liability-insurance). biBerk; What Professional Liability covers. Accessed 2026-09-28.

### Sources About USI Insurance Services

4. [The Power of ONE](https://www.usi.com/about-usi). USI Insurance Services; History, client-count, nationwide office, and P&C / benefits / personal risk / retirement description. Accessed 2026-09-16.
5. [Technology Insurance](https://www.usi.com/property-casualty/technology/). USI Insurance Services; Technology practice client types, seed-to-IPO range, and listed insurance placement lines including PrivaSafe. Accessed 2026-09-16.
6. [Commissions and Fees](https://www.usi.com/commissions-fees/). USI Insurance Services; Licensed-producer authority, insurer-paid commission default, contingent compensation, and client request right. Accessed 2026-09-16.
7. [Accountants Professional Liability — USI Affinity](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/). 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. [USI Specialty Program Solutions](https://www.usi.com/programs/). 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.
9. [Business Services](https://www.usi.com/property-casualty/business-services/). USI Insurance Services; USI advises clients...and provides solutions for...Errors & Omissions/Professional Liability.... Accessed 2026-09-23.

### Sources for the Professional Liability (E&O) Insurance Guide

10. [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.
11. [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.
12. [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.
13. [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.

## biBerk Review Scores for 2026

Review Score: 9.0 / 10 from 3 rated sources, equally weighted.

Customers rate biBerk well: Trustpilot shows 4.5 out of 5 from 2,620 reviews, and NerdWallet gives it 4.0. The complaints are about slow service after you buy, billing and audits, and slow refunds.

- NerdWallet: NerdWallet editorial rating 4.0 (out of 5). NerdWallet's own editorial review of biBerk as a US small-business insurer. Not a customer average. Period: updated Feb 13, 2026. Checked 2026-09-29. [biBerk Insurance Review 2026](https://www.nerdwallet.com/business/insurance/learn/biberk-insurance)
- Trustpilot: TrustScore 4.5 (out of 5); 2620 reviews. Trustpilot's biBerk profile. All lines and states; not tied to a specific policy. Period: profile accessed 2026-09-29; 714 in last 12 months. Checked 2026-09-29. [biBerk Business Insurance Reviews](https://www.trustpilot.com/review/biberk.com)
- BBB: BBB business grade A+ (BBB letter grade). BBB Omaha, NE profile for biBerk, a Berkshire Hathaway Company. Grade, reviews and complaints are separate measures. Period: profile accessed 2026-09-29. Checked 2026-09-29. [biBerk, a Berkshire Hathaway Company - BBB profile](https://www.bbb.org/us/ne/omaha/profile/insurance-agency/biberk-a-berkshire-hathaway-company-0714-300108690); [biBerk BBB customer reviews](https://www.bbb.org/us/ne/omaha/profile/insurance-agency/biberk-a-berkshire-hathaway-company-0714-300108690/customer-reviews); [biBerk BBB complaints](https://www.bbb.org/us/ne/omaha/profile/insurance-agency/biberk-a-berkshire-hathaway-company-0714-300108690/complaints)

Reviewed 2026-09-29. [Read the sourced review](https://spot.insure/insurance-providers/biberk/reviews).

## USI Insurance Services Review Scores for 2026

Review Score: 6.4 / 10 from 1 rated source, equally weighted.

USI’s public feedback is too sparse and office-specific for a firmwide verdict. Check the local team’s responsiveness and experience with your type of business.

- BBB: BBB complaint count 4. BBB business-profile grade is distinct from customer-review stars; branch/parent scope matters. Period: three years preceding access 2026-09-25. Checked 2026-09-25. [BBB result for USI Insurance Services](https://www.bbb.org/us/ny/valhalla/profile/insurance-agency/usi-insurance-services-0121-97856/complaints)
- Google reviews via Birdeye: Birdeye office listing rating from Google reviews 3.2 (5 stars); 9 reviews. One Louisville office listing, not firmwide. Birdeye shows Google-origin reviews (9) and 0 Birdeye-native reviews; this duplicates a Google source stream and is not independent of Google. Period: accessed 2026-09-25. Checked 2026-09-25. [USI office, Louisville, KY — Birdeye listing of Google reviews](https://reviews.birdeye.com/usi-insurance-145632496752867)

Reviewed 2026-09-25. [Read the sourced review](https://spot.insure/insurance-providers/usi/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/biberk-vs-usi/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)