---
title: "Aon vs Nationwide: Professional Liability (E&O) Insurance"
description: "Compare Aon and Nationwide 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-nationwide/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-nationwide"
provider-a: "aon"
provider-b: "nationwide"
coverage-line: "professional-errors-omissions"
---

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

## Agent Guide

**What this page is:** Focused comparison of Aon and Nationwide 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 Nationwide. 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 Nationwide for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, Aon or Nationwide?
- What does Aon or Nationwide 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 Nationwide?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Aon and Nationwide.
- 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 Nationwide](https://spot.insure/compare/aon-vs-nationwide) — 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)
- [Nationwide profile](https://spot.insure/insurance-providers/nationwide) — provider profile (evidence)
- [Aon vs Nationwide Builders Risk Insurance](https://spot.insure/compare/aon-vs-nationwide/builders-risk) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Cargo and Transit Insurance](https://spot.insure/compare/aon-vs-nationwide/cargo-transit) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Commercial Auto Insurance](https://spot.insure/compare/aon-vs-nationwide/commercial-auto) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Commercial Property Insurance](https://spot.insure/compare/aon-vs-nationwide/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Crime Insurance](https://spot.insure/compare/aon-vs-nationwide/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Cyber Insurance](https://spot.insure/compare/aon-vs-nationwide/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide D&O Insurance](https://spot.insure/compare/aon-vs-nationwide/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-nationwide/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-nationwide/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide General Liability Insurance](https://spot.insure/compare/aon-vs-nationwide/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Management Liability Insurance](https://spot.insure/compare/aon-vs-nationwide/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Surety Bonds](https://spot.insure/compare/aon-vs-nationwide/surety-bonds) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Umbrella and Excess Liability Insurance](https://spot.insure/compare/aon-vs-nationwide/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Aon vs Nationwide Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-nationwide/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 Nationwide Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-nationwide/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 Nationwide Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-nationwide/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 Nationwide: How Do They Compare for Professional Liability (E&O) Insurance?

Compare Aon and Nationwide 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 Nationwide Professional Liability (E&O) Insurance Comparison

Use this comparison to evaluate Aon and Nationwide 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 Nationwide 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. Nationwide: offering professional errors omissions for the audience stated on the cited product page. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions 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)

## What Is Nationwide?

Nationwide’s commercial catalogue includes common small-business policies and separate specialty products. A catalogue listing does not establish eligibility or policy terms; confirm the issuing company and coverage for your state and business. [4](https://www.nationwide.com/business/insurance/small-commercial/ "Small Business Insurance") [5](https://www.nationwide.com/agents/business/ "Small Business Insurance Solutions for Agents") [6](https://www.nationwide.com/personal/about-us/terms-conditions "Terms and Conditions for Nationwide.com")

[Nationwide profile](https://spot.insure/insurance-providers/nationwide)

## 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. [8](https://www.tdi.texas.gov/commercial/pl-faq.html "FAQ: Professional liability insurance") [9](https://www.iii.org/article/professional-liability-insurance "Professional liability insurance") [10](https://www.sba.gov/counseling/launch-your-business/#business-insurance "Get business insurance") [11](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 Nationwide Professional Liability (E&O) Insurance?

### Advisory placement or agent route

Aon describes a Professional Services Practice for law, accounting and consulting firms; Nationwide directs prospective buyers to an agent or quote request. A firm seeking specialist placement advice can ask Aon about its practice, while Nationwide’s page points to an agent-led route. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance")

### Policy terms to compare

Nationwide describes E&O for claims alleging errors or omissions in professional services. Aon says it tailors professional-liability structures but its summary does not give policy terms. Compare the actual covered allegations, exclusions and limits in the proposals rather than treating either overview as policy wording. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance")

### Eligibility and quote details

Nationwide describes its audience as professionals and businesses providing services to others, with eligibility set by underwriting; Aon names law, accounting and consulting firms. If your occupation falls outside those examples, ask each market to confirm eligibility before preparing a full submission. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance")

## What Should You Confirm in Aon and Nationwide 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 Nationwide to confirm the quoted policy form, retroactive date and covered allegations; its offering says offering professional errors omissions for the audience stated on the cited product page. [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance")

## Aon vs Nationwide Professional Liability (E&O) Insurance Compared

| Criteria | Aon Professional Liability / E&O brokerage and risk-advisory offering | Nationwide professional errors omissions (official overview) |
| --- | --- | --- |
| 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..) | Nationwide describes offering professional errors omissions for the audience stated on the cited product page. [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance") (Evidence: Company-reported; scope: professional errors omissions marketed by nationwide; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| 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..) | Professionals and businesses providing services to others as described by Nationwide; exact eligible classes depend on underwriting. [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance") (Evidence: Company-reported; scope: professional errors omissions marketed by nationwide; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| 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..) | The cited product page describes E&O insurance for claims alleging errors or omissions in professional services, as described on Nationwide's product page. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance") (Evidence: Company-reported; scope: professional errors omissions marketed by nationwide; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |
| 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..) | The cited overview does not set a universal limit or retention for this line. Ask for the proposed policy form, limits, retentions, exclusions, and conditions in the quote. [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) |
| 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. |
| How to Apply | Confirm in your quote. | The page directs prospective customers to contact an agent or request a quote. The page does not establish a quote, bind, or coverage-effective timeline. [7](https://www.nationwide.com/business/insurance/errors-and-omissions/ "Errors and Omissions Insurance") (Evidence: Company-reported; scope: professional errors omissions marketed by nationwide; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) |

## Related Pages for Aon vs Nationwide Professional Liability (E&O)

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

4. [Small Business Insurance](https://www.nationwide.com/business/insurance/small-commercial/). Nationwide; Small business products and solutions, lines 185–214: BOP, workers’ compensation, commercial auto, umbrella, EPLI, cyber and surety; purchase guidance lines 235–247.. Accessed 2026-09-29.
5. [Small Business Insurance Solutions for Agents](https://www.nationwide.com/agents/business/). Nationwide; Specialized small commercial solutions: BOP, auto, workers’ compensation, cyber, EPLI, umbrella, inland marine and professional liability; page states appetite varies by state, lines 129–163, 191–193.. Accessed 2026-09-29.
6. [Terms and Conditions for Nationwide.com](https://www.nationwide.com/personal/about-us/terms-conditions). Nationwide; P&C products not offered by all companies/states; policy/declarations control; NMI and affiliates may underwrite; each underwriter responsible for own products, lines 358–368 and 391–394.. Accessed 2026-09-29.
7. [Errors and Omissions Insurance](https://www.nationwide.com/business/insurance/errors-and-omissions/). Nationwide; E&O page; professional-services liability and coverage overview.. Accessed 2026-09-30.

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

8. [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.
9. [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.
10. [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.
11. [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).

## Nationwide Review Scores for 2026

Review Score: 7.8 / 10 from 4 rated sources, equally weighted.

Experts like Nationwide more than customers do. NerdWallet gives it 4.5 out of 5 for business insurance, while small-business customers on ConsumerAffairs give it 2.5 out of 5 from 19 reviews.

- NerdWallet: NerdWallet rating 4.5 (out of 5). NerdWallet's editorial small-business review of Nationwide, updated 2026-06-03. It is an expert score, not a customer average. The page header shows 4.5 and a partner card on the same page shows 4.0; the 4.5 is the review's own headline rating. Period: review updated 2026-06-03. Checked 2026-09-29. [Nationwide Business Insurance Review 2026](https://www.nerdwallet.com/business/insurance/learn/nationwide-business-insurance)
- J.D. Power: 2025 Small Commercial satisfaction index 707 (out of 1,000); 2848 reviews. 2025 U.S. Small Commercial Insurance Study: 2,848 U.S. businesses with 50 or fewer employees, fielded Mar-May 2025. Nationwide scored 707 against a study average of 698. A 2026 study was published 2026-08-20 (average 713); Nationwide's 2026 score was not found. Period: 2025 study. Checked 2026-09-29. [2025 U.S. Small Commercial Insurance Study](https://www.jdpower.com/sites/default/files/file/2025-08/2025092%20U.S.%20Small%20Commercial%20Insurance%20Study.pdf); [U.S. Small Commercial Insurance Study](https://www.jdpower.com/business/u-s-small-commercial-insurance-study/); [Rates, Digital Support Boost Small Business Insurance Customer Satisfaction: JD Power](https://www.carriermanagement.com/news/2026/08/20/291242.htm)
- Trustpilot: TrustScore 1.3 (out of 5); 261 reviews. Nationwide's main Trustpilot page. It mixes personal and commercial customers; it cannot be separated. The page text says 1.3 out of 5 while an embedded badge image text said 1.5; we use the visible text score. Period: 69 reviews in the prior 12 months (checked 2026-09-29). Checked 2026-09-29. [Nationwide Reviews](https://www.trustpilot.com/review/nationwide.com)
- ConsumerAffairs: ConsumerAffairs auto average 1.5 (out of 5); 1091 reviews. ConsumerAffairs Nationwide personal auto page (1,091 reviews displayed). Personal auto, not commercial. Period: checked 2026-09-29. Checked 2026-09-29. [Nationwide Auto Insurance Reviews](https://www.consumeraffairs.com/insurance/nationwide_auto.html)
- ConsumerAffairs: ConsumerAffairs rating 2.5 (out of 5); 19 reviews. ConsumerAffairs Nationwide Small Business Insurance page; unclaimed profile; small-business customers. Screenshot captured 2026-09-29. Period: page updated Aug. 14, 2026; captured 2026-09-29. Checked 2026-09-29. [Nationwide Small Business Insurance Reviews](https://www.consumeraffairs.com/insurance/nationwide-small-business-insurance.html)
- BBB: BBB business grade A+. BBB Nationwide profile at the Columbus, Ohio headquarters (BBB Accredited). Covers all Nationwide products, not just commercial. Checked 2026-09-29. [Nationwide BBB Complaints Profile](https://www.bbb.org/us/oh/columbus/profile/insurance-companies/nationwide-0302-2388/complaints)
- BBB: Complaints 111. Same BBB headquarters profile; all Nationwide products, no premium denominator. BBB warns complaint details may be incomplete. The page also shows 269 customer reviews but no star average. Period: closed in the last three years (checked 2026-09-29). Checked 2026-09-29. [Nationwide BBB customer reviews](https://www.bbb.org/us/oh/columbus/profile/insurance-companies/nationwide-0302-2388/customer-reviews)

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

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