---
title: "Aon vs CNA: Fiduciary Liability Insurance"
description: "CNA lists fiduciary expense categories and claims guidance; Aon’s overview does not detail policy costs or claims handling."
canonical: "https://spot.insure/compare/aon-vs-cna/fiduciary"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-cna"
provider-a: "aon"
provider-b: "cna"
coverage-line: "fiduciary"
---

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-cna/fiduciary)

## Agent Guide

**What this page is:** Focused comparison of Aon and CNA for Fiduciary Liability 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 Fiduciary Liability Insurance questions about Aon versus CNA. 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 CNA for Fiduciary Liability Insurance: how do they differ?
- Which is better for Fiduciary Liability Insurance, Aon or CNA?
- What does Aon or CNA publish about Fiduciary Liability Insurance (limits, eligibility, claims, add-ons)?
- What should I confirm in a quote for Fiduciary Liability Insurance from Aon or CNA?

**Key facts:**
- Line: Fiduciary Liability Insurance. Providers: Aon and CNA.
- 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 CNA](https://spot.insure/compare/aon-vs-cna) — parent: all coverage lines for this pair
- [Fiduciary Liability Insurance guide](https://spot.insure/coverage/fiduciary) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [CNA profile](https://spot.insure/insurance-providers/cna) — provider profile (evidence)
- [Aon vs CNA Commercial Property Insurance](https://spot.insure/compare/aon-vs-cna/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Crime Insurance](https://spot.insure/compare/aon-vs-cna/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Cyber Insurance](https://spot.insure/compare/aon-vs-cna/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA D&O Insurance](https://spot.insure/compare/aon-vs-cna/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-cna/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA General Liability Insurance](https://spot.insure/compare/aon-vs-cna/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-cna/kidnap-ransom) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Management Liability Insurance](https://spot.insure/compare/aon-vs-cna/management-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-cna/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs CNA Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-cna/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-aon/fiduciary) — sibling comparison (other line, or other pair for this line)
- [AIG vs CNA Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-cna/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs The Baldwin Group Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-baldwin/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Beazley Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-beazley/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Berkshire Hathaway Specialty Insurance Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-berkshire-hathaway-specialty-insurance/fiduciary) — sibling comparison (other line, or other pair for this line)

# Aon vs CNA: How Do They Compare for Fiduciary Liability Insurance?

CNA lists fiduciary expense categories and claims guidance; Aon’s overview does not detail policy costs or claims handling.

## Research Scope and Use

Use this comparison to evaluate Aon and CNA for Fiduciary Liability 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

CNA lists fiduciary expense categories and claims guidance; Aon’s overview does not detail policy costs or claims handling. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES "Fiduciary Liability | CNA")

## 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)

## CNA Small Business Insurance: Products, Agents and Service

CNA directs small-business buyers to independent agents and describes CNA Connect as a businessowners policy for more than 600 small-business classes. Issuer and availability vary by policy and state, so confirm both in a quote. [4](https://www.cna.com/solutions/small-business "Insurance for Small Businesses") [5](https://www.cna.com/products/cna-connect "CNA Connect Small Businessowners Policy (BOP) | CNA Insurance") [6](https://www.cna.com/cnadisclaimer/generaldisclaimer "General Disclaimer")

[CNA profile](https://spot.insure/insurance-providers/cna)

## What Is Fiduciary Liability Insurance?

Fiduciary liability can protect your company and plan fiduciaries when participants claim mishandling of an employee benefit plan. If you sponsor a retirement or health plan, check who is insured and whether both administration errors and fiduciary-breach claims are addressed. [8](https://www.dol.gov/sites/dolgov/files/ebsa/employers-and-advisers/guidance/field-assistance-bulletins/erisa-fidelity-bonding-requirements.pdf "Field Assistance Bulletin No. 2008-04: Guidance Regarding ERISA Fidelity Bonding Requirements") [9](https://asset.trvstatic.com/download/assets/fri-3001.pdf/c75b6c8e63ca11ee93454641efede6a9 "Fiduciary Liability") [10](https://www.travelers.com/business-insurance/professional-liability-insurance/fiduciary-liability "Fiduciary Liability Insurance")

## Key Differences in Fiduciary Liability Insurance

### Placement and Plan Fit

CNA says its fiduciary offering is written for public, private, and nonprofit organizations. Aon’s Professional Services Practice names law, accounting, and consulting firms as its audience for fiduciary placement and advice. Those market descriptions differ in emphasis but do not determine eligibility for a particular plan sponsor. Buyers should provide plan type, size, and organization class to both before relying on a product overview. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES "Fiduciary Liability | CNA")

### Coverage Terms and Service

CNA lists defense and claim expenses, certain legal penalties, voluntary-compliance costs, and pre-claim investigation costs, and says insureds can access a claims team and expert guidance. Aon describes data-informed risk and human-capital advice but does not specify fiduciary claim costs or claims services. Ask CNA how those categories apply to the proposed policy and ask Aon what claim advocacy its broker engagement includes. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES "Fiduciary Liability | CNA")

## What to Confirm in Fiduciary Liability Insurance Quotes

- Ask CNA for applicable sublimits and the claims contact process. Ask Aon which carrier it proposes and whether pre-claim investigation or voluntary-compliance costs are covered. [3](https://www.aon.com/en/capabilities/risk-transfer/professional-services-practice "Professional Services Practice") [7](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES "Fiduciary Liability | CNA")

## Offering Details

| Criteria | Aon Fiduciary Liability brokerage and risk-advisory offering | CNA Epack 3 Fiduciary Liability |
| --- | --- | --- |
| Role in This Line | Aon presents Fiduciary Liability 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..) | CNA states its fiduciary offering is written for public, private and nonprofit organizations. [7](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES "Fiduciary Liability | CNA") (Evidence: Company-reported; scope: Entity: CNA brand; issuing company varies by form/state Product: Epack 3 Fiduciary Liability Jurisdiction: United States Research source scope: U.S. employee-benefit/retirement-plan fiduciary liability under Epack 3; not ERISA fidelity bond Claim limitation: Subject to underwriting and policy terms. Source/date qualification: Fiduciary sheet dated 20251218 / ©2025; it is a marketing summary, not the issued policy form..) |
| Coverage Features | Aon lists Fiduciary coverage within the professional-services practice’s property-and-casualty coverages. The page does not describe covered fiduciary acts, plans, exclusions or policy terms. [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..) | CNA states its Fiduciary Liability addresses exposure from administration and management of employee benefit and retirement plans. [7](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES "Fiduciary Liability | CNA") (Evidence: Company-reported; scope: Entity: CNA brand; issuing company varies by form/state Product: Epack 3 Fiduciary Liability Jurisdiction: United States Research source scope: U.S. employee-benefit/retirement-plan fiduciary liability under Epack 3; not ERISA fidelity bond Claim limitation: This is fiduciary liability, not an ERISA fidelity bond or employee-benefits liability. Source/date qualification: Fiduciary sheet dated 20251218 / ©2025; it is a marketing summary, not the issued policy form..)<br><br>CNA lists defense/claim expenses, certain legal penalties, voluntary compliance costs and pre-claim investigation costs among its fiduciary coverage features. [7](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES "Fiduciary Liability | CNA") (Evidence: Company-reported; scope: Entity: CNA brand; issuing company varies by form/state Product: Epack 3 Fiduciary Liability Jurisdiction: United States Research source scope: U.S. employee-benefit/retirement-plan fiduciary liability under Epack 3; not ERISA fidelity bond Claim limitation: Company marketing summary only; issued policy forms, underwriting, jurisdictional availability, limits, exclusions and definitions control. Source/date qualification: Fiduciary sheet dated 20251218 / ©2025; it is a marketing summary, not the issued policy form..) |
| 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. | CNA says fiduciary insureds have access to a claims team and expert guidance. [7](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES "Fiduciary Liability | CNA") (Evidence: Company-reported; scope: Entity: CNA brand; issuing company varies by form/state Product: Epack 3 Fiduciary Liability Jurisdiction: United States Research source scope: U.S. employee-benefit/retirement-plan fiduciary liability under Epack 3; not ERISA fidelity bond Claim limitation: Company-reported service description; not an outcome guarantee. Source/date qualification: Fiduciary sheet dated 20251218 / ©2025; it is a marketing summary, not the issued policy form..) |

## Full Comparison

- [Aon vs CNA](https://spot.insure/compare/aon-vs-cna): all coverage lines, business roles, service and claims.
- [What Is Fiduciary Liability Insurance?](https://spot.insure/coverage/fiduciary): Fiduciary liability can protect your company and plan fiduciaries from covered claims about benefit-plan management; check who is insured and whether administration errors are included.
- [Aon vs CNA Commercial Property Insurance](https://spot.insure/compare/aon-vs-cna/commercial-property)
- [Aon vs CNA Crime Insurance](https://spot.insure/compare/aon-vs-cna/crime)
- [Aon vs CNA Cyber Insurance](https://spot.insure/compare/aon-vs-cna/cyber)
- [Aon vs CNA D&O Insurance](https://spot.insure/compare/aon-vs-cna/directors-officers)
- [Aon vs CNA Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-cna/employment-practices)
- [Aon vs CNA General Liability Insurance](https://spot.insure/compare/aon-vs-cna/general-liability)
- [Aon vs CNA Kidnap and Ransom Insurance](https://spot.insure/compare/aon-vs-cna/kidnap-ransom)
- [Aon vs CNA Management Liability Insurance](https://spot.insure/compare/aon-vs-cna/management-liability)
- [Aon vs CNA Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-cna/professional-errors-omissions)
- [Aon vs CNA Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-cna/workers-compensation)
- [AIG vs Aon Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-aon/fiduciary)
- [AIG vs CNA Fiduciary Liability Insurance](https://spot.insure/compare/aig-vs-cna/fiduciary)
- [Alliance Risk vs Aon Fiduciary Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/fiduciary)
- [Aon vs The Baldwin Group Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-baldwin/fiduciary)
- [Aon vs Beazley Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-beazley/fiduciary)
- [Aon vs Berkshire Hathaway Specialty Insurance Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-berkshire-hathaway-specialty-insurance/fiduciary)

## Sources

### 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.

### CNA

4. [Insurance for Small Businesses](https://www.cna.com/solutions/small-business). CNA; Insurance for Small Businesses, lines 38-50 and 65-67 (CNA Central and agent route); lines 79-106 (product and stated appetite lists); page footer line 132 (CNA registered service mark).. Accessed 2026-09-28.
5. [CNA Connect Small Businessowners Policy (BOP) | CNA Insurance](https://www.cna.com/products/cna-connect). CNA; CNA Connect; coverages, product range, services. Accessed 2026-09-28.
6. [General Disclaimer](https://www.cna.com/cnadisclaimer/generaldisclaimer). CNA; General Disclaimer paragraphs 1 and 5 (HTML lines 24 and 28): CNA describes Continental Casualty Company and its relevant affiliates; references to CNA may include one or more CCC affiliates; each particular policy/product/service is the responsibility only of the specific CNA company that issues or supplies it. Footer line 57 identifies CNA Financial Corporation as trademark registrant. Re-read 2026-09-29.. Accessed 2026-09-29.
7. [Fiduciary Liability | CNA](https://www.cna.com/sites/default/files/assets/4aa227df-6712-403a-8b0a-df219c0f8cc3/CNA-Epack3-Fiduciary-SS.pdf?ContentCache=NONE&MOD=AJPERES). CNA; pp. 1–2: benefit-plan administration, covered costs, eligible organizations and claims. Accessed 2026-09-28.

### Fiduciary Liability Insurance Guide

8. [Field Assistance Bulletin No. 2008-04: Guidance Regarding ERISA Fidelity Bonding Requirements](https://www.dol.gov/sites/dolgov/files/ebsa/employers-and-advisers/guidance/field-assistance-bulletins/erisa-fidelity-bonding-requirements.pdf). U.S. Department of Labor, Employee Benefits Security Administration; Q2 pp.2–3. Accessed 2026-09-16.
9. [Fiduciary Liability](https://asset.trvstatic.com/download/assets/fri-3001.pdf/c75b6c8e63ca11ee93454641efede6a9). Travelers Casualty and Surety Company of America; II.D,J–L pp.2–3; II.A p.1; II.V p.5; Header p.1; II.M p.3; I p.1; III.A.6–8 pp.5–6; II.M.2 p.3; III.B.1 p.6. Accessed 2026-09-16.
10. [Fiduciary Liability Insurance](https://www.travelers.com/business-insurance/professional-liability-insurance/fiduciary-liability). Travelers; What Is Fiduciary Liability Insurance?. 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 Reviews

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).

## CNA Reviews

Review Score: 9.0 / 10 from 1 rated source, equally weighted.

Customer feedback on CNA is mixed and hard to compare. NerdWallet gave it 4.5 out of 5 for manufacturers, while Trustpilot shows about 1.4 out of 5 from 49 mostly self-selected reviews.

- NerdWallet: NerdWallet editorial rating for manufacturers 4.5/5 (Editorial rating). NerdWallet editorial assessment of CNA for U.S. manufacturers, not consumer average. Period: Published 2026-03-26. Checked 2026-09-29. [Best Insurance for Manufacturers in 2026](https://www.nerdwallet.com/business/insurance/learn/manufacturers)
- Trustpilot: Displayed Trustpilot TrustScore 1.4/5 page text; 1.5/5 badge (TrustScore out of 5); 49 reviews. CNA.com profile, mixed business and consumer/LTC reports; self-selected, not representative commercial P&C sample. Period: 14 reviews in prior 12 months; 2026-09-29. Checked 2026-09-29. [CNA customer reviews](https://www.trustpilot.com/review/www.cna.com)
- BBB: BBB customer-review average 1/5 (BBB star rating); 6 reviews. Long Term Care Insurance profile covering headquarters/corporate locations; not commercial P&C; six self-selected reviews. Period: Displayed 2026-09-29. Checked 2026-09-29. [CNA Financial Corporation customer reviews](https://www.bbb.org/us/il/chicago/profile/long-term-care-insurance/cna-financial-corporation-0683-90032439/customer-reviews)

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

## Agent and Developer Resources

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