---
title: "Mylo vs USI Insurance Services: Professional Liability (E&O) Insurance"
description: "CPA firms can use USI's AICPA Professional Liability Program; Mylo compares E&O quotes across carriers for small businesses."
canonical: "https://spot.insure/compare/mylo-vs-usi/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-25"
comparison-pair: "mylo-vs-usi"
provider-a: "mylo"
provider-b: "usi"
coverage-line: "professional-errors-omissions"
---

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

## Agent Guide

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

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

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Mylo and USI Insurance Services.
- 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 2026-09-25.

**Related pages:**
- [Mylo vs USI Insurance Services](https://spot.insure/compare/mylo-vs-usi) — all coverage lines for this pair
- [Professional Liability (E&O) Insurance guide](https://spot.insure/coverage/professional-errors-omissions) — how this coverage works
- [Mylo profile](https://spot.insure/insurance-providers/mylo) — provider profile
- [USI Insurance Services profile](https://spot.insure/insurance-providers/usi) — provider profile

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

CPA firms look to USI Insurance Services for the AICPA program, underwritten by CNA. Mylo is a broker that compares quotes from several insurers for businesses from app developers to beauty salons.

USI's AICPA program is built for CPA firms and includes CPA-focused resources; Mylo shops E&O quotes across small-business carriers.

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

CPA firms can use USI's AICPA Professional Liability Program; Mylo compares E&O quotes across carriers for small businesses. [3](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [1](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance")

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

### CPA Program Versus Broad Small-Business Shopping

USI's AICPA-endorsed program is specifically for CPA firms and includes accounting-focused resources. [3](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") Mylo's page instead describes shopping quotes from multiple insurers for small businesses. [1](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance")

### USI's CPA Program History

USI says it has served CPA firms through the AICPA Professional Liability Program since 1994:

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. [3](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") (Evidence: Company-reported; scope: Program page description..)
### 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. [3](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. [2](https://choosemylo.com/contact-your-carrier "Contact Your Carrier")

## What Should You Confirm in Mylo and USI Insurance Services 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. [3](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. [1](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. [3](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. [3](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [1](https://choosemylo.com/business/product-professional-liability "Professional Liability Insurance")

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

| Criteria | Mylo Professional Liability Insurance | AICPA Professional Liability Program (USI Affinity) |
| --- | --- | --- |
| 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. [1](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. [3](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. [1](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. [3](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..) |
| 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. [1](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. [1](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. [3](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..) |
| Role in This Line | Mylo brokers professional liability insurance by comparing quotes from multiple business insurance companies rather than underwriting the policy itself. [1](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. [3](https://www.usi.com/programs/affinity-programs/accountants-professional-liability/ "Accountants Professional Liability — USI Affinity") [5](https://www.usi.com/property-casualty/business-services/ "Business Services") (Evidence: Company-reported; scope: AICPA program page and Business Services practice page..) |

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

- [Mylo company profile](https://spot.insure/insurance-providers/mylo) · [Mylo customer reviews](https://spot.insure/insurance-providers/mylo/reviews)
- [USI Insurance Services company profile](https://spot.insure/insurance-providers/usi) · [USI Insurance Services customer reviews](https://spot.insure/insurance-providers/usi/reviews)
- [What Is Professional Errors and Omissions (E&O) Insurance?](https://spot.insure/coverage/professional-errors-omissions)

## Related Pages for Mylo vs USI Insurance Services

- [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 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.
- [Mylo Professional Liability (E&O) Insurance](https://spot.insure/insurance-providers/mylo/professional-errors-omissions)
- [USI Insurance Services Professional Liability (E&O) Insurance](https://spot.insure/insurance-providers/usi/professional-errors-omissions)

## Sources for Mylo vs USI Insurance Services

### Sources About Mylo

1. [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.
2. [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.

### Sources About USI Insurance Services

3. [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.
4. [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.
5. [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.

Updated 2026-09-25. 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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