---
title: "Mylo vs USI Insurance Services Professional Liability (E&O) Insurance"
description: "USI names CNA as underwriter for its AICPA-endorsed CPA program; Mylo compares quotes across carriers without naming an insurer."
canonical: "https://spot.insure/compare/mylo-vs-usi/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-23"
---

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

USI names CNA as underwriter for its AICPA-endorsed CPA program; Mylo compares quotes across carriers without naming an insurer.

## Research Scope and Use

Use this comparison to evaluate Mylo 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's AICPA Professional Liability Program is underwritten by CNA for CPA firms specifically, while Mylo compares E&O quotes for small businesses across multiple carriers without naming an insurer. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance")

## What Is Mylo Insurance?

Mylo is an independent insurance broker for small and growing businesses. It recommends coverage and compares available quotes from multiple carriers online or with a licensed advisor; the insurer named on the resulting policy provides the coverage. [1](https://choosemylo.com/business/business-insurance "Small Business Insurance") [2](https://choosemylo.com/our-story "About Mylo")

[Mylo profile](https://spot.insure/insurance-providers/mylo)

## 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 Insurer for One Program

USI's page names a carrier for its AICPA-endorsed program specifically. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") Mylo's professional liability page and its carrier-contact directory do not name the insurer that would issue a policy; the directory groups carriers under generic Auto & Home and Business categories only. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance") [4](https://choosemylo.com/contact-your-carrier "Contact Your Carrier")

### A Decades-Old CPA Program Versus Comparison Shopping

USI's page describes a relationship built around one profession over decades:

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..)

Mylo's page instead describes comparing quotes from multiple business insurance companies for a broader range of small businesses, without a single long-running profession-specific program the way USI's does. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance")

### Services Bundled With the Policy

USI's page says AICPA program enrollees 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") Mylo's carrier-contact page lists claims phone numbers by carrier for general categories but does not identify a professional-liability-specific claims contact or resource comparable to USI's. [4](https://choosemylo.com/contact-your-carrier "Contact Your Carrier")

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

- If you're a CPA firm, ask USI whether you'd be placed in the CNA-underwritten AICPA program or a different market. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity")
- Ask Mylo which specific carrier it is proposing for your quote and confirm that carrier's identity directly. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance")
- Ask USI whether the AICPA program's risk-management resources extend to its general Business Services E&O placements outside the CPA program. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity")
- Neither page publishes limits or retentions for these placements; get both in writing. [8](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance")

## Offering Details

| Criteria | Mylo Professional Liability Insurance | AICPA Professional Liability Program (USI Affinity) |
| --- | --- | --- |
| Role in This Line | Mylo brokers professional liability insurance by comparing quotes from multiple business insurance companies rather than underwriting the policy itself. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Professional liability product page..) | 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 professional liability product page and Mylo's carrier-contact directory do not name the insurer that would issue a professional liability policy; the directory groups carriers under generic Auto & Home and Business categories only. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance") [4](https://choosemylo.com/contact-your-carrier "Contact Your Carrier") (Evidence: Not publicly disclosed; scope: Checked the professional liability product page and the carrier-contact directory on 2026-09-23; neither ties a named carrier to this line..) | 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 | Mylo markets this line to businesses that could face a claim from a client unhappy with their professional services, using examples spanning app development, financial planning and beauty-salon services. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Product page examples; a particular business's eligibility depends on underwriting..) | 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 | Mylo describes the policy responding to breach-of-contract claims, bodily injury or property damage claims, financial-loss claims, and consequential-damages claims arising from a client relationship. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Product page coverage descriptions; actual insuring agreements and exclusions are set by the issued policy..)<br><br>Mylo explains that professional liability comes in claims-made and occurrence forms, and that tail coverage can be added to a claims-made policy to extend reporting after it ends. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Product page FAQ; which form and tail terms are offered depends on the placed carrier..) | 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 | Not described in the reviewed sources. | 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 | Mylo says it recommends coverage customized to the business and compares professional liability quotes from top-rated business insurance companies to find a combination of coverage and price. [3](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance") (Evidence: Company-reported; scope: Product page "How will Mylo find me the right policy?" section..) | 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..) |
| Claims Support | Mylo's carrier-contact page lists claims phone numbers by carrier for Auto & Home and Business policies generally, but does not identify a professional-liability-specific claims contact or process. [4](https://choosemylo.com/contact-your-carrier "Contact Your Carrier") (Evidence: Not found in reviewed sources; scope: Carrier-contact directory checked 2026-09-23; entries are organized by carrier and general product category, not by coverage line..) | Not described in the reviewed sources. |

## Full Comparison

- [Mylo vs USI Insurance Services](https://spot.insure/compare/mylo-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.
- [Mylo vs USI Insurance Services Cyber Insurance](https://spot.insure/compare/mylo-vs-usi/cyber)
- [Mylo vs USI Insurance Services Employee Health Benefits](https://spot.insure/compare/mylo-vs-usi/employee-health-benefits)
- [Mylo vs USI Insurance Services Medical Malpractice Insurance](https://spot.insure/compare/mylo-vs-usi/medical-malpractice)
- [Mylo vs USI Insurance Services Surety Bonds](https://spot.insure/compare/mylo-vs-usi/surety-bonds)
- [Mylo vs USI Insurance Services Workers’ Compensation Insurance](https://spot.insure/compare/mylo-vs-usi/workers-compensation)
- [Alliance Risk vs Mylo Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-mylo/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 Mylo Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-mylo/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 Mylo Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-mylo/professional-errors-omissions)
- [Beazley vs USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-usi/professional-errors-omissions)

## Sources

### Mylo

1. [Small Business Insurance](https://choosemylo.com/business/business-insurance). Mylo; Hero; What Insurance Does A Small Business Need (Business Owners Policy listing); Get My Quote; Business Insurance FAQs; commercial-product navigation; footer legal disclosure. Accessed 2026-09-16.
2. [About Mylo](https://choosemylo.com/our-story). Mylo; Your Digital One-Stop Shop; The Broker Advantage; Proven Heritage, Powerful Future; About Mylo FAQs. Accessed 2026-09-15.
3. [Professional Liability Insurance](https://choosemylo.com/business/product-professional-liability). Mylo; Professional Liability? But I Do Good Work; What does professional liability cover?; Professional liability FAQs (claims-made vs. occurrence, tail coverage); How will Mylo find me the right policy?. Accessed 2026-09-23.
4. [Contact Your Carrier](https://choosemylo.com/contact-your-carrier). Mylo; Carrier contact list grouped by Auto & Home, Business and Claims; no professional-liability-specific entry. 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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