---
title: "Coterie Insurance vs USI Insurance Services Professional Liability (E&O) Insurance"
description: "USI names CNA as underwriter of its CPA-only AICPA program; Coterie's MPL covers dozens of professions but names no carrier."
canonical: "https://spot.insure/compare/coterie-vs-usi/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-23"
---

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

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

USI names CNA as underwriter of its CPA-only AICPA program; Coterie's MPL covers dozens of professions but names no carrier.

## Research Scope and Use

Use this comparison to evaluate Coterie Insurance 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.

## Summary

USI says its AICPA Professional Liability Program, sold exclusively to CPA firms, is underwritten by CNA. Coterie's MPL covers dozens of professions under one form but names only the policy form, not an insurer. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers")

## What Is Coterie Insurance?

Coterie Insurance is a managing general agency and digital small-business insurance platform built for licensed agents and distribution partners. It markets business owner's, standalone general liability and miscellaneous professional liability policies, with optional endorsements for eligible risks. [1](https://coterieinsurance.com/blog/instant-bindable-small-business-insurance-for-agents/ "Instant Bindable Small Business Insurance Quotes for Agents") [2](https://coterieinsurance.com/newsroom/press-releases/allianz-x-announces-investment-in-coterie-insurance/ "Allianz X Announces Strategic Investment in Coterie Insurance") [3](https://coterieinsurance.com/insurance/ "Coterie Insurance small business products overview")

[Coterie Insurance profile](https://spot.insure/insurance-providers/coterie)

## What Is USI Insurance Services?

USI Insurance Services is a U.S. insurance brokerage and consulting firm that arranges property and casualty, employee benefits, personal risk, and retirement programs. Its Technology practice says it works with software, hardware, and related companies from early seed stage through IPO, using a consultative process rather than a published self-serve quote. [5](https://www.usi.com/about-usi "The Power of ONE") [6](https://www.usi.com/property-casualty/technology/ "Technology Insurance") [7](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 errors and omissions (E&O) insurance, also called professional liability insurance, addresses claims that professional services or advice caused a client financial loss. What's covered depends on the services actually scheduled in the policy, not the product label alone. [11](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [12](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [13](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [14](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

## Key Differences in Professional Liability (E&O) Insurance

### A Named Carrier for a Narrow Program Versus No Carrier for a Broad One

USI's own page states that the AICPA Professional Liability Program, which it runs as the endorsed producer through its USI Affinity division, is "underwritten by CNA." [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") Coterie's MPL brochure names the policy form, "Coterie Professional Liability Errors and Omissions Insurance Declarations," but leaves the issuing insurer to the policy declarations. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers")

### CPA Firms Only Versus Dozens of Listed Professions

USI markets the AICPA program to sole practitioners and regional CPA firms specifically, and has been the endorsed AICPA Program provider since 1994. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") Coterie lists dozens of eligible professions for MPL instead, including accounting services, architects and engineers, bookkeeping, human resources consulting, interior design and technology services/IT consulting. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers")

### A Named Risk-Management Service Versus a Published Exclusions List

USI says firms enrolled in the AICPA program get supportive claims handling and exclusive access to risk-management resources, including engagement-letter templates. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") Coterie's MPL brochure instead publishes its base-form exclusions directly, covering bodily injury or property damage, fraud, wrongful termination and contractual liability beyond the underlying contract. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers")

## What to Confirm in Professional Liability (E&O) Insurance Quotes

- If you're a CPA firm, ask USI whether your quote falls under the AICPA program or its general Business Services brokerage, since USI runs both. [10](https://www.usi.com/property-casualty/business-services/ "Business Services")
- Ask an agent or broker to name the insurer behind your Coterie MPL declarations page, since the brochure doesn't name one. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers")
- Get published limit or premium figures from USI directly, since the AICPA program page doesn't publish them. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity")
- Ask an agent or broker which of Coterie's each-claim limit tiers your contract requires before binding. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers")

## Offering Details

| Criteria | Coterie Miscellaneous Professional Liability (MPL) | AICPA Professional Liability Program (USI Affinity) |
| --- | --- | --- |
| Role in This Line | Coterie writes Miscellaneous Professional Liability (MPL) as a claims-made policy sold through agents and brokers to protect a small-business client against third-party claims for errors or omissions in their professional services. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers") (Evidence: Company-reported; scope: MPL brochure policy-overview paragraph..) | 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. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [10](https://www.usi.com/property-casualty/business-services/ "Business Services") (Evidence: Company-reported; scope: AICPA program page and Business Services practice page..) |
| Issuing Insurer | The MPL brochure names the policy form 'Coterie Professional Liability Errors and Omissions Insurance Declarations' (form code CTPL CWW PL) but does not name the issuing insurer; that appears only on the policy declarations. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers") (Evidence: Company-reported; scope: MPL brochure 'Mandatory Countrywide PL Policy Forms' table..) | 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. [8](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 | Coterie lists dozens of eligible professions for MPL, including accounting services, architects and engineers, bookkeeping, human resources consulting, interior design, property management, real estate agents/brokers, and technology services/IT consulting, each with profession-specific exclusions in some cases (for example, barbers/beauticians exclude services like electrolysis and tattoo services). [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers") (Evidence: Company-reported; scope: MPL brochure 'Eligible Professions' and 'Eligible Professions (Continued)' lists..)<br><br>Coterie says MPL is available in most states but is currently unavailable in DC, IL, MA, MT, ND, and VA. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers") (Evidence: Company-reported; scope: MPL brochure 'MPL unavailable' note..) | 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. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") (Evidence: Company-reported; scope: Program page description..) |
| Coverage Features | Coterie's MPL policy covers economic or financial (non-physical) damages arising from wrongful acts in professional services, such as faulty reports or verbal advice that cause a client financial loss; it is written on a claims-made basis covering incidents reported during the policy period or an extended reporting period, occurring after the policy's retroactive date. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers") (Evidence: Company-reported; scope: MPL brochure policy overview and 'Professional Liability Limits of Insurance' definitions..)<br><br>Coterie's MPL base form excludes bodily injury or property damage claims, fraud or intentional wrongful acts, wrongful termination or discrimination claims, and claims based on contractual liability assumed beyond what would exist without the contract, among other listed exclusions. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers") (Evidence: Company-reported; scope: MPL brochure 'Professional Liability Policy Base Form Exclusions' list..) | 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. [8](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 | Coterie offers MPL each-claim limits of $25,000, $50,000, $250,000, $500,000, or $1,000,000, with the aggregate set at two times the each-claim limit (three times for the $1,000,000 option); the basic policy includes a 60-day extended reporting period, with optional purchased extensions of 1 to 6 years, and up to 6 years of prior-acts (retroactive) coverage. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers") (Evidence: Company-reported; scope: MPL brochure 'Available Limits' table and 'Extended Reporting Period'/'Retroactive Date' definitions..) | 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. [8](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 | Not described in the reviewed sources. | 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. [8](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 | MPL is distributed only through agents and brokers using Coterie's quoting platform; the reviewed brochure does not describe a direct-to-business application path. [4](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf "Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers") (Evidence: Company-reported; scope: MPL brochure framing as 'for Agents and Brokers'..) | 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. [8](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..) |

## Full Comparison

- [Coterie Insurance vs USI Insurance Services](https://spot.insure/compare/coterie-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 E&O insurance addresses claims that a mistake in your advice or services caused a client financial loss.
- [Alliance Risk vs Coterie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-coterie/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)
- [At-Bay vs Coterie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-coterie/professional-errors-omissions)
- [At-Bay vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-usi/professional-errors-omissions)
- [Beazley vs Coterie Insurance Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-coterie/professional-errors-omissions)
- [Beazley vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-usi/professional-errors-omissions)

## Sources

### Coterie Insurance

1. [Instant Bindable Small Business Insurance Quotes for Agents](https://coterieinsurance.com/blog/instant-bindable-small-business-insurance-for-agents/). Coterie Insurance; Built for Agents and Brokers; online workflow; core lines; endorsements; availability sections. Accessed 2026-09-15.
2. [Allianz X Announces Strategic Investment in Coterie Insurance](https://coterieinsurance.com/newsroom/press-releases/allianz-x-announces-investment-in-coterie-insurance/). Coterie Insurance and Allianz X; September 11, 2025 announcement; MGA role; Series C investment and reinsurance relationship. Accessed 2026-09-15.
3. [Coterie Insurance small business products overview](https://coterieinsurance.com/insurance/). Coterie Insurance; Product line overview page listing Professional Liability among Coterie's coverages. Accessed 2026-09-23.
4. [Miscellaneous Professional Liability (MPL) Policy Overview & Product Highlights for Agents and Brokers](https://8588529.fs1.hubspotusercontent-na1.net/hubfs/8588529/Current%20Appetite%20Content/Professional%20Liability%20Brochure_December2025.pdf). Coterie Insurance; Policy overview paragraph; Eligible Professions list; 'Currently unavailable in: DC, IL, MA, MT, ND, and VA'; Professional Liability Limits of Insurance table; Claims-Made Policy Form / Retroactive Date / Extended Reporting Period definitions; Mandatory Countrywide PL Policy Forms; Base Form Exclusions. Accessed 2026-09-23.

### USI Insurance Services

5. [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.
6. [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.
7. [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.
8. [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.
9. [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.
10. [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.

### Professional Liability (E&O) Insurance Guide

11. [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.
12. [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.
13. [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.
14. [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 2026-09-23. 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.

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