---
title: "At-Bay vs Counterpart: Professional Liability (E&O) Insurance"
description: "At-Bay's MPL page reviewed September 23, 2026 advertised limits up to $5 million, subject to restrictions; Counterpart lists separate profession programs with selected modular terms."
canonical: "https://spot.insure/compare/at-bay-vs-counterpart/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-10-01"
comparison-pair: "at-bay-vs-counterpart"
provider-a: "at-bay"
provider-b: "counterpart"
coverage-line: "professional-errors-omissions"
---

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[Human-readable page](https://spot.insure/compare/at-bay-vs-counterpart/professional-errors-omissions)

## Agent Guide

**What this page is:** Focused comparison of At-Bay and Counterpart 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 At-Bay versus Counterpart. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

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

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: At-Bay and Counterpart.
- 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:**
- [At-Bay vs Counterpart](https://spot.insure/compare/at-bay-vs-counterpart) — 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
- [At-Bay profile](https://spot.insure/insurance-providers/at-bay) — provider profile (evidence)
- [Counterpart profile](https://spot.insure/insurance-providers/counterpart) — provider profile (evidence)
- [AIG vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-at-bay/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs Counterpart Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-counterpart/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-at-bay/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Counterpart Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-counterpart/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-at-bay/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Counterpart Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-counterpart/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)

# At-Bay vs Counterpart: How Do They Compare for Professional Liability (E&O) Insurance?

At-Bay's MPL page reviewed September 23, 2026 advertised limits up to $5 million, subject to restrictions; Counterpart lists separate profession programs with selected modular terms.

## How to Use the At-Bay vs Counterpart Professional Liability (E&O) Insurance Comparison

Use this comparison to evaluate At-Bay and Counterpart 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.

## At-Bay vs Counterpart Professional Liability (E&O) Insurance Summary

At-Bay's MPL page reviewed September 23, 2026 advertised limits up to $5 million, subject to restrictions; Counterpart lists separate profession programs with selected modular terms. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [9](https://yourcounterpart.com/products/miscellaneous-professional "Professional & General Liability") [10](https://yourcounterpart.com/products/architects-and-engineers "Architects, Engineers, & Contractors Liability") [11](https://yourcounterpart.com/products/allied-healthcare "Allied Medical & Healthcare Liability") [12](https://yourcounterpart.com/products/lawyers-professional-liability "Lawyers Professional Liability Insurance")

## What Is At-Bay Insurance?

At-Bay targets technology firms with up to $5 billion in revenue and offers cyber limits up to $10 million, plus technology E&O; buyers seeking a standard online business package should compare other carriers. Managed detection and response costs extra. [1](https://www.at-bay.com/insurance/ "Cyber, Tech E&O & Professional Liability Insurance") [2](https://www.at-bay.com/stance/ "At-Bay Stance")

[At-Bay profile](https://spot.insure/insurance-providers/at-bay)

## What Is Counterpart Insurance?

Counterpart describes a broker-focused platform for small businesses and lists management and professional liability programs. Buyers should compare the named profession, carrier, state, policy wording and any package component on the actual quote. [7](https://yourcounterpart.com/ "Counterpart | Agentic Insurance™") [8](https://yourcounterpart.com/about "About Counterpart")

[Counterpart profile](https://spot.insure/insurance-providers/counterpart)

## 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. [14](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [15](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [16](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [17](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

## What Are the Key Differences Between At-Bay and Counterpart Professional Liability (E&O) Insurance?

### Program Structure and Professional Fit

At-Bay's MPL page, reviewed September 23, 2026, advertised primary limits up to $5 million subject to state and appetite restrictions and listed independent-contractor and disciplinary-defense features. Counterpart names separate programs for miscellaneous, architecture/engineering/contractor, allied-health and lawyer risks. Treat At-Bay's ceiling as a dated product-page maximum and compare the eligible class and services on each quote. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [9](https://yourcounterpart.com/products/miscellaneous-professional "Professional & General Liability") [10](https://yourcounterpart.com/products/architects-and-engineers "Architects, Engineers, & Contractors Liability") [11](https://yourcounterpart.com/products/allied-healthcare "Allied Medical & Healthcare Liability") [12](https://yourcounterpart.com/products/lawyers-professional-liability "Lawyers Professional Liability Insurance")

### Submission and Limit Selection

At-Bay directs licensed insurance professionals to email underwriting or configure limits and retentions through its broker platform; Counterpart describes distribution through wholesale brokers and supports modular options for selected professions. For either route, ask for the policy schedule showing whether limits are per claim or aggregate and what retention applies. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [6](https://www.at-bay.com/brokers/platform/ "Broker Platform") [13](https://knowledge.yourcounterpart.com/en/articles/4438791-how-can-i-get-insurance-through-counterpart "How can I get insurance through Counterpart?") [9](https://yourcounterpart.com/products/miscellaneous-professional "Professional & General Liability")

## What Should You Confirm in At-Bay and Counterpart Professional Liability (E&O) Insurance Quotes?

- At-Bay: verify state eligibility and the $5 million ceiling for your class. Counterpart: request the profession-specific form and quote, including contractor treatment and disciplinary-proceeding wording. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [9](https://yourcounterpart.com/products/miscellaneous-professional "Professional & General Liability") [12](https://yourcounterpart.com/products/lawyers-professional-liability "Lawyers Professional Liability Insurance")

## At-Bay vs Counterpart Professional Liability (E&O) Insurance Compared

| Criteria | At-Bay Miscellaneous Professional Liability (MPL) Insurance | Counterpart Professional Liability |
| --- | --- | --- |
| Role in This Line | At-Bay markets MPL as one of its own named insurance products, sold through its disclosed producer, At-Bay Insurance Services LLC, with the product page directed at "properly licensed insurance professionals" submitting business rather than at direct retail buyers. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [4](https://www.at-bay.com/licenses/ "Licenses") (Evidence: Company-reported; scope: Current MPL product page and license disclosures; this describes the distribution channel, not who bears the underwriting risk..) | Counterpart describes its product distribution through Counterpart Insurance Services, Inc. and wholesale brokers. [7](https://yourcounterpart.com/ "Counterpart | Agentic Insurance™") [13](https://knowledge.yourcounterpart.com/en/articles/4438791-how-can-i-get-insurance-through-counterpart "How can I get insurance through Counterpart?") (Evidence: Company-reported; scope: The cited marketing pages do not identify the insurer for a particular professional-liability risk or state..) |
| Issuing Insurer | The current MPL product page does not name the insurer that issues the policy. A September 2023 press release named United Specialty Company in connection with MPL, but that historical reference does not establish the current issuing insurer for a new MPL quote. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [5](https://www.at-bay.com/press_releases/at-bay-doubles-mpl/ "At-Bay Doubles Miscellaneous Professional Liability Appetite") (Evidence: Not found in reviewed sources; scope: Reviewed MPL page as of 2026-09-23 and the September 2023 press release; restates the existing provider fact that MPL's current issuer is unresolved, distinct from the August 2023 Cyber/Tech E&O transition to At-Bay Specialty Insurance Company paper..) | Confirm in your quote. |
| Who It’s For | At-Bay says it provides primary MPL for businesses of all revenue sizes with limits up to $5 million, subject to state restrictions and eligibility requirements detailed in a separate MPL appetite guide. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") (Evidence: Company-reported; scope: Current MPL appetite paragraph; the linked appetite guide's specific eligibility requirements were not independently opened for this record..) | Counterpart lists distinct professional-liability programs for miscellaneous professionals, architects/engineers/contractors, allied healthcare and lawyers. [9](https://yourcounterpart.com/products/miscellaneous-professional "Professional & General Liability") [10](https://yourcounterpart.com/products/architects-and-engineers "Architects, Engineers, & Contractors Liability") [11](https://yourcounterpart.com/products/allied-healthcare "Allied Medical & Healthcare Liability") [12](https://yourcounterpart.com/products/lawyers-professional-liability "Lawyers Professional Liability Insurance") (Evidence: Company-reported; scope: Each page has its own occupation scope; no single eligibility rule applies across all four products..) |
| Coverage Features | At-Bay lists MPL coverage highlights including automatic coverage for acquired subsidiaries, claims-made-and-reported coverage, coverage for independent contractors, disciplinary-proceedings defense, a duty-to-defend contract, personal-injury coverage (including emotional distress), punitive damages where insurable, a professional-services definition written for each insured, and an 80/20 hammer clause. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") (Evidence: Company-reported; scope: Product-page coverage-highlights list; an 80/20 hammer clause is a settlement provision where the insurer pays 80% and the insured pays 20% of costs after the insured declines a recommended settlement. The issued policy and declarations control actual wording, limits and exclusions..) | The Lawyers Professional Liability page describes claims arising from lawyers’ professional services; the MPL page gives service-related negligence and financial-loss examples. [12](https://yourcounterpart.com/products/lawyers-professional-liability "Lawyers Professional Liability Insurance") [9](https://yourcounterpart.com/products/miscellaneous-professional "Professional & General Liability") (Evidence: Company-reported; scope: These are distinct program summaries and do not establish identical policy triggers or coverages..) |
| Limits and Retentions | At-Bay publishes an MPL limit ceiling of up to $5 million, with state restrictions that are not detailed on the product page itself. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") (Evidence: Company-reported; scope: Current appetite paragraph; this is an advertised ceiling, not a guaranteed available limit for any specific applicant..) | Counterpart says its professional pages support modular limits and presents sample limits and retentions for selected professions. [9](https://yourcounterpart.com/products/miscellaneous-professional "Professional & General Liability") [12](https://yourcounterpart.com/products/lawyers-professional-liability "Lawyers Professional Liability Insurance") (Evidence: Company-reported; scope: Published examples are illustrative, not terms available to a particular applicant..) |
| How to Apply | At-Bay directs MPL submissions to underwriting by email or through automatic quotes on its Broker Platform, which At-Bay describes as a workflow of creating a quote, customizing limits and retentions, and binding the policy. [3](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [6](https://www.at-bay.com/brokers/platform/ "Broker Platform") (Evidence: Company-reported; scope: Current submission instructions and the general broker-platform workflow description; MPL-specific automation details were not separately confirmed..) | Confirm in your quote. |

## Related Pages for At-Bay vs Counterpart Professional Liability (E&O)

- [At-Bay vs Counterpart](https://spot.insure/compare/at-bay-vs-counterpart): 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.
- [AIG vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-at-bay/professional-errors-omissions)
- [AIG vs Counterpart Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-counterpart/professional-errors-omissions)
- [Alliance Risk vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-at-bay/professional-errors-omissions)
- [Alliance Risk vs Counterpart Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-counterpart/professional-errors-omissions)
- [Aon vs At-Bay Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-at-bay/professional-errors-omissions)
- [Aon vs Counterpart Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-counterpart/professional-errors-omissions)

## Sources for At-Bay vs Counterpart

### Sources About At-Bay

1. [Cyber, Tech E&O & Professional Liability Insurance](https://www.at-bay.com/insurance/). At-Bay; Product cards and agency disclosure. Accessed 2026-09-16.
2. [At-Bay Stance](https://www.at-bay.com/stance/). At-Bay; Real Protection Against Real Threats; Endpoint, Email, MXDR; footnotes 1 and 3–6. Accessed 2026-09-16.
3. [MPL Insurance: Coverage Highlights & Appetite](https://www.at-bay.com/insurance/mpl/). At-Bay; MPL Coverage Highlights list; MPL Appetite paragraph; Send us your submissions; "material on this page is intended for use solely by properly licensed insurance professionals". Accessed 2026-09-23.
4. [Licenses](https://www.at-bay.com/licenses/). At-Bay; Producer introduction; agency and surplus-lines footer naming At-Bay Insurance Services LLC. Accessed 2026-09-16.
5. [At-Bay Doubles Miscellaneous Professional Liability Appetite](https://www.at-bay.com/press_releases/at-bay-doubles-mpl/). At-Bay; September 28, 2023 release: final paragraph before Media Contacts. Accessed 2026-09-16.
6. [Broker Platform](https://www.at-bay.com/brokers/platform/). At-Bay; How it works: Create a quote, Customize your quote, Bind your policy, Manage renewals; FAQs. Accessed 2026-09-16.

### Sources About Counterpart

7. [Counterpart | Agentic Insurance™](https://yourcounterpart.com/). Counterpart, Inc.; Current homepage: Quote Online CTA; brokers/small-business audiences; product list; performance claims; legal/footer qualifications, rendered lines 2–52, 55–70, 98–100, 282–287.. Accessed 2026-09-29.
8. [About Counterpart](https://yourcounterpart.com/about). Counterpart, Inc.; Carrier disclosure and Our Story; underwriters named at line 13; company focus lines 22–36. Financial-strength note says ratings are as of 2024-02-26.. Accessed 2026-09-29.
9. [Professional & General Liability](https://yourcounterpart.com/products/miscellaneous-professional). Counterpart, Inc.; Reopened 2026-09-30: page lines 4–8 says MPL may be purchased alone or packaged with GL; lines 208–245 describe industries and coverage examples; lines 251–283 describe risk assessment, quoting channels and underwriter access. Marketing page, not binding terms.. Accessed 2026-09-30.
10. [Architects, Engineers, & Contractors Liability](https://yourcounterpart.com/products/architects-and-engineers). Counterpart, Inc.; Retained provider source: A&E/contractor class examples, services, enhancements and illustrative limits; prior access 2026-09-28.. Accessed 2026-09-28.
11. [Allied Medical & Healthcare Liability](https://yourcounterpart.com/products/allied-healthcare). Counterpart, Inc.; Retained provider source: names allied healthcare classes, combined coverage/enhancements and illustrative limits/examples; does not establish conventional malpractice for every medical profession or standalone general liability. Prior access 2026-09-28; direct reopen failed in this session.. Accessed 2026-09-28.
12. [Lawyers Professional Liability Insurance](https://yourcounterpart.com/products/lawyers-professional-liability). Counterpart, Inc.; Reopened 2026-09-30: page lines 4–8 names lawyer-focused product; lines 236–272 company-stated geographic reach, modular liability limit examples, professional services, technology/media extensions and GL alongside professional cover. Product terms remain policy-specific.. Accessed 2026-09-30.
13. [How can I get insurance through Counterpart?](https://knowledge.yourcounterpart.com/en/articles/4438791-how-can-i-get-insurance-through-counterpart). Counterpart Knowledge Center; Retained source: article describes wholesale-broker referral route; prior access 2026-09-28.. Accessed 2026-09-28.

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

14. [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.
15. [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.
16. [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.
17. [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.

## At-Bay Review Scores for 2026

Review Score: 9.5 / 10 from 2 rated sources, equally weighted.

At-Bay’s public review evidence is thin: one old G2 review and a BBB complaint record. It is not enough to judge day-to-day service or claims handling.

- BBB: BBB rating A (A+ to F). At-Bay identity; US commercial insurance review/satisfaction evidence sought on BBB. Period: accessed 2026-09-25. Checked 2026-09-25. [At-Bay | BBB Business Profile](https://www.bbb.org/us/ca/mountain-view/profile/insurance-companies/at-bay-1216-1000025767)
- G2: G2 star rating 4.5 (5 stars); 1 reviews. At-Bay company/product feedback; G2 seller profile identifies its offering as cybersecurity insurance and lists San Francisco headquarters. Not an insurance-policy claims or commercial-buyer satisfaction study. Period: review dated 2020-09-21. Checked 2026-09-25. [At-Bay seller profile and reviews](https://www.g2.com/es/sellers/at-bay)

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

## Counterpart Review Scores for 2026

Review Score: not enough ratings.

We found no independent customer rating of Counterpart, so it has no Review Score. Its Trustpilot page shows no reviews, and BBB has no matching business.



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

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/at-bay-vs-counterpart/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)