---
title: "Aon vs Zurich U.S.: Professional Liability (E&O) Insurance"
description: "Compare Aon and Zurich U.S. on professional liability (e&o) insurance to see how their documented coverage, audience or placement routes affect your quote questions."
canonical: "https://spot.insure/compare/aon-vs-zurich/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-zurich"
provider-a: "aon"
provider-b: "zurich"
coverage-line: "professional-errors-omissions"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and insurance research. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Spot Score, get_rankings for current provider rankings, search_provider_reliability to filter Spot Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

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

## Agent Guide

**What this page is:** Focused comparison of Aon and Zurich U.S. 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 Aon versus Zurich U.S.. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Aon vs Zurich U.S. for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, Aon or Zurich U.S.?
- What does Aon or Zurich U.S. 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 Aon or Zurich U.S.?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Aon and Zurich U.S..
- 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 2026-09-30. Editorial policy: /editorial-policy.

**Related pages:**
- [Aon vs Zurich U.S.](https://spot.insure/compare/aon-vs-zurich) — 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
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [Zurich U.S. profile](https://spot.insure/insurance-providers/zurich) — provider profile (evidence)
- [Aon vs Zurich U.S. Builders Risk Insurance](https://spot.insure/compare/aon-vs-zurich/builders-risk) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Commercial Auto Insurance](https://spot.insure/compare/aon-vs-zurich/commercial-auto) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Commercial Property Insurance](https://spot.insure/compare/aon-vs-zurich/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Crime Insurance](https://spot.insure/compare/aon-vs-zurich/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Cyber Insurance](https://spot.insure/compare/aon-vs-zurich/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. D&O Insurance](https://spot.insure/compare/aon-vs-zurich/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-zurich/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-zurich/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. General Liability Insurance](https://spot.insure/compare/aon-vs-zurich/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Management Liability Insurance](https://spot.insure/compare/aon-vs-zurich/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Surety Bonds](https://spot.insure/compare/aon-vs-zurich/surety-bonds) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-zurich/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Aon vs Zurich U.S. Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-zurich/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-aon/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs Zurich U.S. Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-zurich/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-aon/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Zurich U.S. Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-zurich/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 The Baldwin Group Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-baldwin/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)

# Aon vs Zurich U.S.: How Do They Compare for Professional Liability (E&O) Insurance?

Compare Aon and Zurich U.S. on professional liability (e&o) insurance to see how their documented coverage, audience or placement routes affect your quote questions.

## How to Use the Aon vs Zurich U.S. Professional Liability (E&O) Insurance Comparison

Use this comparison to evaluate Aon and Zurich U.S. 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.

## Aon vs Zurich U.S. Professional Liability (E&O) Insurance Summary

Aon: professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. Zurich U.S.: zurich says E&O can address professional-service negligence, mistakes or failure to deliver promised services, including defense costs, court fees, settlements and judgments. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance")

## What Is Aon?

Aon’s U.S. Commercial Risk terms describe brokerage for certain insurance programs, while its Middle Market page describes a dedicated practice for mid-sized organizations across North America. The public materials reviewed do not identify the licensed producer or insurer for a particular placement. Ask which entity will produce each line and which insurer will issue the policy; request jurisdiction details for the proposed placement and ask how compensation and claim notice work for your account. [1](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us "Commercial Risk Solutions U.S. Brokerage Terms of Service") [2](https://www.aon.com/en/capabilities/middle-market-clients "Middle Market Clients")

[Aon profile](https://spot.insure/insurance-providers/aon)

## Zurich U.S. Business Insurance: Products, Access, and Claims

Zurich U.S. serves Middle Market businesses and large or national accounts with commercial property-casualty and specialty insurance. Buyers can explore product lines and work through an agent or broker; the insurer named on a quote or policy identifies which Zurich company underwrites that coverage. [4](https://www.zurichna.com/about "About Us | Zurich U.S. | Commercial Insurance") [5](https://www.zurichna.com/brokers "Agents and Brokers | Zurich U.S.")

[Zurich U.S. profile](https://spot.insure/insurance-providers/zurich)

## 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. [7](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [8](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [9](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [10](https://www.hiscox.com/documents/pl-sample-policy-wording.pdf "Professional Liability – US Direct Errors and Omissions Insurance")

## What Are the Key Differences Between Aon and Zurich U.S. Professional Liability (E&O) Insurance?

### Policy scope and stated allegations

Aon describes professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. Zurich U.S. describes zurich says E&O can address professional-service negligence, mistakes or failure to deliver promised services, including defense costs, court fees, settlements and judgments. Compare the specific allegations and covered costs in the forms rather than relying on a shared E&O label. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance")

### Who each practice serves

Aon identifies law, accounting and consulting firms as the audience for its global Professional Services Practice. That audience scope does not establish eligibility for every firm or other business. Zurich U.S. identifies zurich names technology, manufacturing and third-party service providers among targeted E&O classes. Check whether your profession and services fall within both descriptions, then ask underwriting to confirm eligibility. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance")

### Service after requesting a quote

Aon describes its professional-services advisors use industry knowledge, insights, data and tools to support risk-management and human-capital decisions. This is a company-described advisory service, not a claim outcome or policy benefit. Zurich U.S. describes zurich describes E&O claims specialists and underwriters and says claims are reviewed under policy terms with legal counsel coordination. Ask which team handles renewals, policy changes and claim questions for your E&O account. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance")

## What Should You Confirm in Aon and Zurich U.S. Professional Liability (E&O) Insurance Quotes?

- Ask Aon to confirm the quoted policy form, retroactive date and covered allegations; its offering says professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice")
- Ask Zurich U.S. to confirm the quoted policy form, retroactive date and covered allegations; its offering says zurich says E&O can address professional-service negligence, mistakes or failure to deliver promised services, including defense costs, court fees, settlements and judgments. [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance")

## Aon vs Zurich U.S. Professional Liability (E&O) Insurance Compared

| Criteria | Aon Professional Liability / E&O brokerage and risk-advisory offering | Zurich Errors & Omissions / Professional Liability |
| --- | --- | --- |
| Role in This Line | Aon presents Professional Liability / E&O as a line its Professional Services Practice helps arrange or advise on for professional-service firms. Aon is describing a global brokerage and advisory service, not issuing the underlying policy. The producing legal entity and carrier for any particular placement are not named on this page. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Aon’s global professional-services practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement..) | Confirm in your quote. |
| Issuing Insurer | The reviewed practice page does not name the insurer or producing legal entity for a specific placement. Ask for both on the quote and binder. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Not found in reviewed sources; scope: Aon’s global practice page as reviewed 2026-09-30; no state-specific placement schedule or buyer quote was reviewed. This does not establish that Aon cannot arrange a placement..) | Confirm in your quote. |
| Who It’s For | Aon identifies law, accounting and consulting firms as the audience for its global Professional Services Practice. That audience scope does not establish eligibility for every firm or other business. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Audience described for Aon’s global professional-services practice. It does not establish U.S. state availability or underwriting eligibility for a placement..) | Zurich names technology, manufacturing and third-party service providers among targeted E&O classes. [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance") (Evidence: Company-reported; scope: Zurich U.S. brand; exact underwriting company may vary by policy and state; professional errors and omissions; United States. Company-reported product description; actual coverage, underwriting, limits and state availability are governed by issued policy terms..) |
| Coverage Features | Aon describes professional liability as addressing professional-services firms’ liability exposure and says it tailors coverage structures to a firm’s needs. It identifies E&O as a commonly used name for professional-liability insurance; actual policy terms are not stated. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Aon’s marketing description of the brokerage/coverage area. The page is not the insurer’s policy form and does not establish an insured's entitlement to coverage..) | Zurich says E&O can address professional-service negligence, mistakes or failure to deliver promised services, including defense costs, court fees, settlements and judgments. [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance") (Evidence: Company-reported; scope: Zurich U.S. brand; exact underwriting company may vary by policy and state; professional errors and omissions; United States. Company-reported product description; actual coverage, underwriting, limits and state availability are governed by issued policy terms..)<br><br>Zurich’s Pro Plus is a modular suite of coverages in one policy; admitted E&O coverage is available in most states. [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance") (Evidence: Company-reported; scope: Zurich U.S. brand; exact underwriting company may vary by policy and state; professional errors and omissions; United States. Company-reported product description; actual coverage, underwriting, limits and state availability are governed by issued policy terms..) |
| Limits and Retentions | The reviewed page does not state a buyer-specific limit, retention, deductible or other placement terms. Confirm these in the quote, bond or issued policy. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Not publicly disclosed; scope: Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed..) | Confirm in your quote. |
| Risk Services | Aon says its professional-services advisors use industry knowledge, insights, data and tools to support risk-management and human-capital decisions. This is a company-described advisory service, not a claim outcome or policy benefit. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") (Evidence: Company-reported; scope: Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated..) | Confirm in your quote. |
| Claims Support | Confirm in your quote. | Zurich describes E&O claims specialists and underwriters and says claims are reviewed under policy terms with legal counsel coordination. [6](https://www.zurichna.com/insurance/errors-and-omissions "Errors and Omissions Insurance – E&O | Zurich Insurance") (Evidence: Company-reported; scope: Zurich U.S. brand; exact underwriting company may vary by policy and state; professional errors and omissions; United States. Company-reported product description; actual coverage, underwriting, limits and state availability are governed by issued policy terms..) |

## Related Pages for Aon vs Zurich U.S. Professional Liability (E&O)

- [Aon vs Zurich U.S.](https://spot.insure/compare/aon-vs-zurich): 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.
- [Aon vs Zurich U.S. Builders Risk Insurance](https://spot.insure/compare/aon-vs-zurich/builders-risk)
- [Aon vs Zurich U.S. Commercial Auto Insurance](https://spot.insure/compare/aon-vs-zurich/commercial-auto)
- [Aon vs Zurich U.S. Commercial Property Insurance](https://spot.insure/compare/aon-vs-zurich/commercial-property)
- [Aon vs Zurich U.S. Crime Insurance](https://spot.insure/compare/aon-vs-zurich/crime)
- [Aon vs Zurich U.S. Cyber Insurance](https://spot.insure/compare/aon-vs-zurich/cyber)
- [Aon vs Zurich U.S. D&O Insurance](https://spot.insure/compare/aon-vs-zurich/directors-officers)
- [Aon vs Zurich U.S. Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-zurich/employment-practices)
- [Aon vs Zurich U.S. Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-zurich/fiduciary)
- [Aon vs Zurich U.S. General Liability Insurance](https://spot.insure/compare/aon-vs-zurich/general-liability)
- [Aon vs Zurich U.S. Management Liability Insurance](https://spot.insure/compare/aon-vs-zurich/management-liability)
- [Aon vs Zurich U.S. Surety Bonds](https://spot.insure/compare/aon-vs-zurich/surety-bonds)
- [Aon vs Zurich U.S. Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-zurich/umbrella-excess)
- [Aon vs Zurich U.S. Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-zurich/workers-compensation)
- [AIG vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-aon/professional-errors-omissions)
- [AIG vs Zurich U.S. Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-zurich/professional-errors-omissions)
- [Alliance Risk vs Aon Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-aon/professional-errors-omissions)
- [Alliance Risk vs Zurich U.S. Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-zurich/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 The Baldwin Group Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-baldwin/professional-errors-omissions)

## Sources for Aon vs Zurich U.S. Professional Liability (E&O) Insurance

### Sources About Aon

1. [Commercial Risk Solutions U.S. Brokerage Terms of Service](https://www.aon.com/en/about/leadership-and-governance/brokerage-terms-of-service-for-commercial-risk-solutions-us). Aon; Lines 120–127: certain-program broker-of-record scope, consultation, application assistance, client signature and bind instruction, and account administration; lines 140–147: variable and contingent compensation, potential placement incentive, and client request route; lines 206–213: no price guarantee and surplus-lines limitations; lines 229–231: client insurer-notice duty unless separately agreed.. Accessed 2026-09-29.
2. [Middle Market Clients](https://www.aon.com/en/capabilities/middle-market-clients). Aon; Lines 125–132: mid-sized organizations and middle-market framing; lines 165–173: dedicated practice and North America statement; lines 188–224: Commercial Risk capabilities. No numeric company-size cutoff or U.S.-only eligibility rule is stated on the reviewed page.. Accessed 2026-09-29.
3. [Professional Services Practice](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice). Aon; Named professional-services audiences and global advisory role, lines 125–128; line offerings and explanations lines 131–190; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule.. Accessed 2026-09-30.

### Sources About Zurich U.S.

4. [About Us | Zurich U.S. | Commercial Insurance](https://www.zurichna.com/about). Zurich U.S.; About Zurich U.S.; customer and industry description; FAQ on U.S. product focus. Accessed 2026-09-28.
5. [Agents and Brokers | Zurich U.S.](https://www.zurichna.com/brokers). Zurich U.S.; Agent/broker route and locator. Accessed 2026-09-28.
6. [Errors and Omissions Insurance – E&O | Zurich Insurance](https://www.zurichna.com/insurance/errors-and-omissions). Zurich U.S.; Pro Plus coverage, targeted classes, policy structure, claims and underwriting. Accessed 2026-09-28.

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

7. [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.
8. [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.
9. [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.
10. [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 2026-09-30. 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.

## Aon Review Scores for 2026

Review Score: 6.1 / 10 from 3 rated sources, equally weighted.

Public ratings for Aon are low: Trustpilot shows 1.2 out of 5 from 782 reviews, and BBB shows 1.6 from five. Aon is a global firm, so those pages mostly reflect other parts of the business, not large U.S. commercial accounts.

- J.D. Power: Aon study score 822 (out of 1000). Historical 2017 large-commercial-broker study; U.S. and Canada commercial insurance decision-makers at large organizations. J.D. Power reports 2,506 evaluations across the study, not Aon-specific responses; the Aon respondent count is not stated. Period: 2017 study; ranked 3rd among large commercial brokers; study-wide population 2,506, not Aon review count. Checked 2026-09-29. [Diversity of Offerings Becomes Key Differentiator for Large Commercial Insurers, JD Power Finds](https://www.jdpower.com/business/press-releases/jd-power-2017-large-commercial-insurance-study)
- Trustpilot: TrustScore 1.2 (out of 5); 782 reviews. Global www.aon.com profile merged with other Aon profiles; mixed experiences include pensions, travel, professional indemnity and Australian business quotation service. The two latter complaints are individual unverified allegations, not evidence of U.S. commercial-placement outcomes or insurer fault. Trustpilot says reviews may not be representative because the company has not recently invited reviews. Period: Displayed 2026-09-29; page separately showed 198 reviews in the last 12 months. Checked 2026-09-29. [Aon Reviews](https://www.trustpilot.com/review/www.aon.com)
- BBB: BBB business grade B− (BBB letter grade; stated reason: failure to respond to two filed complaints). BBB of Chicago & Northern Illinois profile for Aon plc; the business grade is BBB’s own measure, not customer stars. Checked 2026-09-29. [Aon plc | BBB Business Profile](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291)
- BBB: BBB customer review average 1.6 (out of 5); 5 reviews. BBB of Chicago & Northern Illinois customer reviews for Aon plc; some reviews are about employee-benefit and medical-expense issues. Period: checked 2026-09-29. Checked 2026-09-29. [Aon plc | BBB Reviews](https://www.bbb.org/us/il/chicago/profile/insurance-companies/aon-plc-0654-5291/customer-reviews)

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

## Zurich U.S. Review Scores for 2026

Review Score: not enough ratings.

The available Zurich review evidence is mixed and comes from distinct populations: a car-rental-business editorial rating, broad global and U.S. review-platform snapshots, and a BBB business-profile grade. These are not a representative measure of every Zurich commercial policy or claim.

- NerdWallet: editorial rating 4.5 (5). U.S. commercial rental-fleet insurance publisher review; editorial evaluation, not a consumer average or all-line Zurich result. Period: Page updated July 10, 2026. Checked 2026-09-29. [Best Insurance Companies for Car Rental Businesses](https://www.nerdwallet.com/business/insurance/learn/car-rental-business-insurance)
- Trustpilot: TrustScore 1.2 (5); 748 reviews. Global Zurich Insurance Group profile; mixed countries and products, not U.S. commercial-policyholder satisfaction. Period: Snapshot 2026-09-29. Checked 2026-09-29. [Zurich Insurance Reviews](https://www.trustpilot.com/review/www.zurich.com)
- ConsumerAffairs: customer rating 1.0 (5); 72 reviews. U.S. Zurich North America/Property & Casualty profile; mixed products and customer populations, not line-specific commercial results. Period: Snapshot 2026-09-29. Checked 2026-09-29. [Zurich Property & Casualty Insurance Reviews from Real Customers](https://www.consumeraffairs.com/insurance/zurich-north-america-insurance.html)
- BBB: customer review rating 1.14 (5); 116 reviews. Customer-submitted reviews on the Zurich American Insurance Company profile; not a line-specific or representative policyholder survey. Period: Snapshot 2026-09-29. Checked 2026-09-29. [Zurich American Insurance Company Customer Reviews](https://www.bbb.org/us/tx/dallas/profile/insurance-companies/zurich-american-insurance-company-0875-90008903/customer-reviews)

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

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/aon-vs-zurich/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)