---
title: "At-Bay vs Coalition: Professional Liability (E&O) Insurance"
description: "At-Bay markets Miscellaneous Professional Liability as its own named product with limits up to $5 million. Coalition sells MPL only as an addition to an Active Cyber Insurance quote, saying it takes a few extra questions to add."
canonical: "https://spot.insure/compare/at-bay-vs-coalition/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-29"
comparison-pair: "at-bay-vs-coalition"
provider-a: "at-bay"
provider-b: "coalition"
coverage-line: "professional-errors-omissions"
---

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

## Agent Guide

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

**Questions this page answers:**
- At-Bay vs Coalition for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, At-Bay or Coalition?
- What does At-Bay or Coalition publish about Professional Liability (E&O) Insurance (limits, eligibility, claims, add-ons)?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: At-Bay and Coalition.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}/{line}` with a before b). A reversed pair redirects permanently to the alphabetical one.

**Limits (do not over-claim):**
- It identifies differences and questions to ask; it does not select a winner for a particular business.
- 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; last updated 2026-09-29.

**Related pages:**
- [At-Bay vs Coalition](https://spot.insure/compare/at-bay-vs-coalition) — all coverage lines for this pair
- [Professional Liability (E&O) Insurance guide](https://spot.insure/coverage/professional-errors-omissions) — how this coverage works
- [At-Bay profile](https://spot.insure/insurance-providers/at-bay) — provider profile
- [Coalition profile](https://spot.insure/insurance-providers/coalition) — provider profile

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

Coalition's MPL is an add-on to an Active Cyber quote through appointed brokers; At-Bay markets its own primary MPL for businesses of all revenue sizes, with limits up to $5 million, subject to state restrictions.

At-Bay sells MPL as a standalone product with a $5 million ceiling; Coalition sells MPL only as an add-on to Active Cyber.

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

At-Bay markets Miscellaneous Professional Liability as its own named product with limits up to $5 million. Coalition sells MPL only as an addition to an Active Cyber Insurance quote, saying it takes a few extra questions to add. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability")

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

### Standalone Product Versus a Cyber Add-On

At-Bay names Miscellaneous Professional Liability (MPL) as one of its own insurance products, with a dedicated appetite and limit range independent of any other line. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") Coalition designs and distributes MPL only as an add-on that combines with certain Active Cyber Insurance policies, not as a policy a buyer can purchase on its own. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability")

When comparing At-Bay and Coalition, the more specific product menu can make fit easier to judge before you request a quote.

### How Each Reaches a Buyer

At-Bay directs MPL submissions to underwriting by email or through its Broker Platform, a workflow aimed at licensed insurance professionals placing business. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [4](https://www.at-bay.com/brokers/platform/ "Broker Platform") Coalition describes a different path to the same product:

Coalition sells MPL only as an addition to an Active Cyber Insurance quote, saying it takes just a few extra questions to add, rather than as a stand-alone policy. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23..)

At-Bay's producer submission and Coalition's cyber-quote add-on are two different doors into the same coverage, and a buyer weighing the two would ask each company what happens if it does not already hold the companion product the other route assumes. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite")

### What the Insurer Disclosures Show

At-Bay's own product page does not name the insurer that currently issues MPL, leaving that unresolved for a new quote. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") Coalition's disclosure page has named sections for admitted cyber, non-admitted cyber, and admitted executive risk, but no equivalent admitted-MPL section, suggesting the line is placed on a non-admitted basis with insurers the disclaimer does not name. [6](https://www.coalitioninc.com/legal/disclaimer "U.S. Disclaimers")

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

- Ask whether you need an Active Cyber Insurance policy first before Coalition will quote MPL. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability")
- Ask At-Bay for the current MPL issuing insurer, since the product page does not name one. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite")
- Ask Coalition which non-admitted insurer would actually issue the MPL add-on for your state. [6](https://www.coalitioninc.com/legal/disclaimer "U.S. Disclaimers")
- Confirm At-Bay's advertised $5 million limit ceiling and any state restrictions that apply to your business. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite")
- Ask each company whether MPL claims are handled by a dedicated professional-liability team or folded into general or cyber claims handling. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability")

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

| Criteria | At-Bay Miscellaneous Professional Liability (MPL) Insurance | Coalition Miscellaneous Professional Liability (MPL) |
| --- | --- | --- |
| 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. [1](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..) | Coalition markets MPL to any business that performs professional services, naming examples such as consultants, marketing and PR firms, staffing firms, printers, interior decorators, photographers and videographers, and property managers. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23..) |
| 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. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [4](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..) | Coalition sells MPL only as an addition to an Active Cyber Insurance quote, saying it takes just a few extra questions to add, rather than as a stand-alone policy. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23..) |
| 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. [1](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..) | Coalition says MPL covers defense costs, settlements, judgments, and other expenses from claims of errors and omissions in professional services, including negligence, failure to provide service, and misstatements about the service performed, on a duty-to-defend basis even when the business is not ultimately at fault. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23; the issued policy controls actual terms..) |
| 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. [1](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") [2](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..) | Coalition designs and distributes MPL as an add-on coverage that combines with certain Active Cyber Insurance policies, sold through appointed brokers. [5](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance "Miscellaneous Professional Liability") (Evidence: Company-reported; scope: Miscellaneous Professional Liability product page as read on 2026-09-23..) |

## About At-Bay and Coalition and Professional Liability (E&O) Insurance

- [At-Bay company profile](https://spot.insure/insurance-providers/at-bay) · [At-Bay customer reviews](https://spot.insure/insurance-providers/at-bay/reviews)
- [Coalition company profile](https://spot.insure/insurance-providers/coalition) · [Coalition customer reviews](https://spot.insure/insurance-providers/coalition/reviews)
- [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions)

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

- [At-Bay vs Coalition](https://spot.insure/compare/at-bay-vs-coalition): 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.
- [At-Bay Professional Liability (E&O) Insurance](https://spot.insure/insurance-providers/at-bay/professional-errors-omissions)
- [Coalition Professional Liability (E&O) Insurance](https://spot.insure/insurance-providers/coalition/professional-errors-omissions)

## Sources for At-Bay vs Coalition Professional Liability (E&O) Insurance

### Sources About At-Bay

1. [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.
2. [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.
3. [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.
4. [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 Coalition

5. [Miscellaneous Professional Liability](https://www.coalitioninc.com/insurance/miscellaneous-professional-liability-insurance). Coalition; Why Miscellaneous Professional Liability?; MPL Advantage; What does MPL cover?; What types of claims does MPL protect against?; What types of businesses could benefit from MPL?; Why does 'Duty to Defend' coverage matter?. Accessed 2026-09-23.
6. [U.S. Disclaimers](https://www.coalitioninc.com/legal/disclaimer). Coalition; Non-Admitted Cyber; Admitted Cyber; Admitted Executive Risk (names Zurich American Insurance Company, NAIC 16535); no 'Admitted MPL' or 'Admitted Tech E&O' section appears on the page. Accessed 2026-09-23.

Updated 2026-09-29. 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.

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/at-bay-vs-coalition/professional-errors-omissions.md)
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