---
title: "Aon vs Corgi: Umbrella and Excess Liability Insurance"
description: "Compare Aon and Corgi on umbrella and excess liability insurance to see how their documented coverage, audience or placement routes affect your quote questions."
canonical: "https://spot.insure/compare/aon-vs-corgi/umbrella-excess"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "aon-vs-corgi"
provider-a: "aon"
provider-b: "corgi"
coverage-line: "umbrella-excess"
---

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[Human-readable page](https://spot.insure/compare/aon-vs-corgi/umbrella-excess)

## Agent Guide

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

**Key facts:**
- Line: Umbrella and Excess Liability Insurance. Providers: Aon and Corgi.
- 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 Corgi](https://spot.insure/compare/aon-vs-corgi) — parent: all coverage lines for this pair
- [Umbrella and Excess Liability Insurance guide](https://spot.insure/coverage/umbrella-excess) — coverage explainer for this line
- [Aon profile](https://spot.insure/insurance-providers/aon) — provider profile (evidence)
- [Corgi profile](https://spot.insure/insurance-providers/corgi) — provider profile (evidence)
- [Aon vs Corgi Cargo and Transit Insurance](https://spot.insure/compare/aon-vs-corgi/cargo-transit) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi Commercial Auto Insurance](https://spot.insure/compare/aon-vs-corgi/commercial-auto) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi Crime Insurance](https://spot.insure/compare/aon-vs-corgi/crime) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi Cyber Insurance](https://spot.insure/compare/aon-vs-corgi/cyber) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi D&O Insurance](https://spot.insure/compare/aon-vs-corgi/directors-officers) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-corgi/employment-practices) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-corgi/fiduciary) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi General Liability Insurance](https://spot.insure/compare/aon-vs-corgi/general-liability) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-corgi/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Corgi Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-corgi/workers-compensation) — sibling comparison (other line, or other pair for this line)
- [AIG vs Aon Umbrella and Excess Liability Insurance](https://spot.insure/compare/aig-vs-aon/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [AIG vs Corgi Umbrella and Excess Liability Insurance](https://spot.insure/compare/aig-vs-corgi/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Aon Umbrella and Excess Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs Corgi Umbrella and Excess Liability Insurance](https://spot.insure/compare/alliance-risk-vs-corgi/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Aon Umbrella and Excess Liability Insurance](https://spot.insure/compare/amelia-risk-vs-aon/umbrella-excess) — sibling comparison (other line, or other pair for this line)
- [Amelia Risk vs Corgi Umbrella and Excess Liability Insurance](https://spot.insure/compare/amelia-risk-vs-corgi/umbrella-excess) — sibling comparison (other line, or other pair for this line)

# Aon vs Corgi: How Do They Compare for Umbrella and Excess Liability Insurance?

Compare Aon and Corgi on umbrella and excess liability insurance to see how their documented coverage, audience or placement routes affect your quote questions.

## How to Use the Aon vs Corgi Umbrella and Excess Liability Insurance Comparison

Use this comparison to evaluate Aon and Corgi for Umbrella and Excess 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.

## Aon vs Corgi Umbrella and Excess Liability Insurance Summary

Aon: umbrella and Excess Liability as separate coverage areas within construction liability. The page does not specify an attachment point, underlying policy, limits or terms for a particular placement. Corgi: sells Commercial Umbrella as excess capacity that sits above a startup's scheduled underlying CGL, HNOA, and EPLI policies rather than as a standalone primary policy. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi 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 Corgi Insurance?

Corgi suits technology startups wanting packages organized from pre-seed through growth, with dashboard changes as the business grows; firms seeking only a direct single-carrier policy should compare alternatives. Issuers vary by product and state. [4](https://www.corgi.insure/disclaimers "Disclaimers & Licensing") [5](https://www.corgi.insure "Corgi Insurance: Startup Insurance, Quoted in Minutes") [6](https://www.prnewswire.com/news-releases/corgi-insurance-launches-admitted-insurance-carrier-302860246.html "Corgi Insurance Launches Admitted Insurance Carrier") [7](https://content.naic.org/sites/default/files/publication-loc-zu-listing-companies-summary.pdf "NAIC Listing of Companies") [8](https://content.naic.org/insurance-topics/risk-retention-groups "Insurance Topics: Risk Retention Groups")

[Corgi profile](https://spot.insure/insurance-providers/corgi)

## What Is Umbrella and Excess Liability Insurance?

Umbrella or excess insurance adds liability limits above the policies named in the quote after a covered claim exhausts their limits. It may fit if a contract sets higher limits; check which primary policies are listed and any gaps between them. [10](https://www.iii.org/publication/insuring-your-business-small-business-owners-guide-to-insurance/specific-coverages/liability-insurance "Liability Insurance") [11](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm "Commercial Insurance Guide") [12](https://www.insurance.ca.gov/0200-industry/0050-renew-license/0200-requirements/casualty/lines-of-ins.cfm "Lines of Insurance") [13](https://www.coverdash.com/coverage "Coverage Hub") [14](https://kinro.com/products "Products")

## What Are the Key Differences Between Aon and Corgi Umbrella and Excess Liability Insurance?

### Scheduled policies and attachment

Corgi says its occurrence-based umbrella follows scheduled CGL, hired and non-owned auto, and EPLI policies, attaching after their per-occurrence or aggregate limit is exhausted. Aon lists umbrella and excess as construction coverage areas but gives no attachment details. A construction buyer should ask Aon to map the proposed layer to each underlying policy. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance")

### Illustrative limits and retention

Corgi illustrates a $5 million per-occurrence and aggregate layer with a $0 self-insured retention above scheduled underlying limits. Aon does not publish a buyer-specific limit or retention in its reviewed page. Compare the actual attachment point and limit with the illustrative example, not as a guaranteed offer. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance")

### Construction placement and startup scope

Aon describes construction risk placement for contractors, project owners and designers; Corgi’s umbrella is specifically scheduled above startup CGL, hired-auto and EPLI policies. Ask each whether your company type and underlying program fit the line it describes. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance")

## What Should You Confirm in Aon and Corgi Umbrella and Excess Liability Insurance Quotes?

- Ask Aon to confirm the quoted coverage trigger, underlying policies and exclusions; its offering says umbrella and Excess Liability as separate coverage areas within construction liability. The page does not specify an attachment point, underlying policy, limits or terms for a particular placement. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management")
- Ask Corgi to confirm the quoted coverage trigger, underlying policies and exclusions; its offering says sells Commercial Umbrella as excess capacity that sits above a startup's scheduled underlying CGL, HNOA, and EPLI policies rather than as a standalone primary policy. [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance")

## Aon vs Corgi Umbrella and Excess Liability Insurance Compared

| Criteria | Aon Umbrella and Excess Liability brokerage and risk-advisory offering | Corgi Commercial Umbrella Liability |
| --- | --- | --- |
| Role in This Line | Aon says its global construction practice designs and places risk solutions and uses broking experience and a global network across construction insurance lines. For umbrella and excess liability, this is evidence of Aon’s brokered market offering; the page does not identify the insurer for a buyer’s placement. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Aon’s global construction and infrastructure practice page. This establishes a marketed brokerage/advisory offering, not policy issuance or account-specific placement..) | Corgi sells Commercial Umbrella as excess capacity that sits above a startup's scheduled underlying CGL, HNOA, and EPLI policies rather than as a standalone primary policy. [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance") (Evidence: Company-reported; scope: Umbrella product page description..) |
| 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/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (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..) | The umbrella product page does not name the issuing carrier for this line; Corgi's general disclosures say coverage may be underwritten by affiliated or third-party carriers depending on product and jurisdiction, without identifying which entity covers umbrella specifically. [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance") (Evidence: Not publicly disclosed; scope: Umbrella product page as read on 2026-09-23, checked against the site's general underwriting disclosure language..) |
| Who It’s For | Aon describes its global construction and infrastructure practice as serving contractors, owners, developers, engineers, architects, designers, financiers and investors, and says it works with organizations of varied sizes and complexity. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Audience described for Aon’s global construction and infrastructure practice. It does not establish U.S. state availability or underwriting eligibility for a placement..) | Confirm in your quote. |
| Coverage Features | Aon lists Umbrella and Excess Liability as separate coverage areas within construction liability. The page does not specify an attachment point, underlying policy, limits or terms for a particular placement. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (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..) | Corgi describes the umbrella as occurrence-based and follow-form: it attaches once a scheduled underlying policy's per-occurrence or aggregate limit is exhausted, matches that policy's terms and exclusions, and can drop down to respond as primary if an underlying policy is unavailable due to insurer insolvency or aggregate exhaustion (but generally not for a coverage exclusion). [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance") (Evidence: Company-reported; scope: Umbrella product page glossary and FAQ; actual attachment and drop-down terms are set by the issued policy..)<br><br>Corgi lists six scenarios the umbrella extends to: CGL excess, hired-auto excess, EPLI excess, personal and advertising injury excess, products-completed operations excess, and CGL aggregate refresh. [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance") (Evidence: Company-reported; scope: Umbrella product page "Six Scenarios" section; each still requires the matching underlying policy to be in place and exhausted..) |
| 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/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Not publicly disclosed; scope: Aon’s global practice page as reviewed 2026-09-30; no quote, bond form or issued policy was reviewed..) | Corgi's illustrative umbrella example shows a $5 million per-occurrence and $5 million aggregate layer with a $0 self-insured retention above the scheduled underlying limits. [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance") (Evidence: Company-reported; scope: Illustrative policy structure ('Anatomy of a $5M Umbrella Policy') on the product page; actual limits and retention depend on the issued policy and the schedule of underlying..) |
| Risk Services | Aon describes project risk-advisory services to understand project-specific risks and develop risk-transfer, management or mitigation strategies. It also describes a global construction team and market access. These are company-reported brokerage and advisory services, not coverage benefits. [3](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management "Construction and Infrastructure Insurance and Risk Management") (Evidence: Company-reported; scope: Company-reported advisory services on Aon’s global practice page; account-specific service scope is not stated..) | The reviewed umbrella page does not describe risk-management or loss-control services tied specifically to the umbrella layer. [9](https://www.corgi.insure/umbrella "Commercial Umbrella Insurance for Startups | Corgi Insurance") (Evidence: Not found in reviewed sources; scope: Umbrella product page as read on 2026-09-23..) |
| How to Apply | Confirm in your quote. | Corgi's homepage lists Commercial Umbrella Liability under specialty coverages with a 1-14 day turnaround, distinct from the policies marked for an instant online quote. [5](https://www.corgi.insure "Corgi Insurance: Startup Insurance, Quoted in Minutes") (Evidence: Company-reported; scope: Homepage policy-card labeling as of 2026-09-23..) |

## Related Pages for Aon vs Corgi Umbrella and Excess Liability Insurance

- [Aon vs Corgi](https://spot.insure/compare/aon-vs-corgi): all coverage lines, business roles, service and claims.
- [What Is Umbrella and Excess Liability Insurance?](https://spot.insure/coverage/umbrella-excess): Umbrella or excess insurance can add liability limits above selected underlying policies when a covered claim exceeds them; compare the schedule and any gaps.
- [Aon vs Corgi Cargo and Transit Insurance](https://spot.insure/compare/aon-vs-corgi/cargo-transit)
- [Aon vs Corgi Commercial Auto Insurance](https://spot.insure/compare/aon-vs-corgi/commercial-auto)
- [Aon vs Corgi Crime Insurance](https://spot.insure/compare/aon-vs-corgi/crime)
- [Aon vs Corgi Cyber Insurance](https://spot.insure/compare/aon-vs-corgi/cyber)
- [Aon vs Corgi D&O Insurance](https://spot.insure/compare/aon-vs-corgi/directors-officers)
- [Aon vs Corgi Employment Practices Liability Insurance](https://spot.insure/compare/aon-vs-corgi/employment-practices)
- [Aon vs Corgi Fiduciary Liability Insurance](https://spot.insure/compare/aon-vs-corgi/fiduciary)
- [Aon vs Corgi General Liability Insurance](https://spot.insure/compare/aon-vs-corgi/general-liability)
- [Aon vs Corgi Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-corgi/professional-errors-omissions)
- [Aon vs Corgi Workers’ Compensation Insurance](https://spot.insure/compare/aon-vs-corgi/workers-compensation)
- [AIG vs Aon Umbrella and Excess Liability Insurance](https://spot.insure/compare/aig-vs-aon/umbrella-excess)
- [AIG vs Corgi Umbrella and Excess Liability Insurance](https://spot.insure/compare/aig-vs-corgi/umbrella-excess)
- [Alliance Risk vs Aon Umbrella and Excess Liability Insurance](https://spot.insure/compare/alliance-risk-vs-aon/umbrella-excess)
- [Alliance Risk vs Corgi Umbrella and Excess Liability Insurance](https://spot.insure/compare/alliance-risk-vs-corgi/umbrella-excess)
- [Amelia Risk vs Aon Umbrella and Excess Liability Insurance](https://spot.insure/compare/amelia-risk-vs-aon/umbrella-excess)
- [Amelia Risk vs Corgi Umbrella and Excess Liability Insurance](https://spot.insure/compare/amelia-risk-vs-corgi/umbrella-excess)

## Sources for Aon vs Corgi Umbrella and Excess Liability 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. [Construction and Infrastructure Insurance and Risk Management](https://www.aon.com/en/capabilities/risk-transfer/construction-and-infrastructure-insurance-and-risk-management). Aon; Construction client audience and global placement role, lines 123–126; offering descriptions lines 135–156; coverage-area taxonomy lines 167–195; contact link lines 120–122. Global practice page; no U.S. state or account-specific placement schedule.. Accessed 2026-09-30.

### Sources About Corgi

4. [Disclaimers & Licensing](https://www.corgi.insure/disclaimers). Corgi Insurance Services, Inc.; Carrier Financial Strength (including “federally chartered” and “federal prudential oversight” wording); About Corgi; Licensing; Premium and Payment Disclosures (producer commissions, fees, or other consideration, amounts available on request); Binding Authority and Policy Issuance; page last updated 04/05/26. Accessed 2026-09-15.
5. [Corgi Insurance: Startup Insurance, Quoted in Minutes](https://www.corgi.insure). Corgi Insurance; Explore Our Main Policies list: "1-14 days turnaround Commercial Umbrella Liability". Accessed 2026-09-23.
6. [Corgi Insurance Launches Admitted Insurance Carrier](https://www.prnewswire.com/news-releases/corgi-insurance-launches-admitted-insurance-carrier-302860246.html). PR Newswire (Corgi press release); Announcement of Corgi Insurance Company, Inc.; planned small-business product classes; guaranty-association eligibility statement. Accessed 2026-09-15.
7. [NAIC Listing of Companies](https://content.naic.org/sites/default/files/publication-loc-zu-listing-companies-summary.pdf). National Association of Insurance Commissioners; June 2026 listing, numerical entry 17763 P 1 AZ TECHNOLOGY RRG INC. Accessed 2026-09-15.
8. [Insurance Topics: Risk Retention Groups](https://content.naic.org/insurance-topics/risk-retention-groups). National Association of Insurance Commissioners; Topic page last updated 13 October 2025: member-owned liability insurers formed under state and federal law; may be formed under a state's captive or traditional insurance laws; domiciled in one state and registered in others; treated as multi-state companies subject to modified NAIC accreditation standards. Accessed 2026-09-15.
9. [Commercial Umbrella Insurance for Startups | Corgi Insurance](https://www.corgi.insure/umbrella). Corgi Insurance; Anatomy of a $5M Umbrella Policy (form CORG-UMB-0100); How Umbrella Compares to CGL and Excess Liability; The Six Scenarios Umbrella Extends To; Umbrella Glossary; FAQ. Accessed 2026-09-23.

### Sources for the Umbrella and Excess Liability Insurance Guide

10. [Liability Insurance](https://www.iii.org/publication/insuring-your-business-small-business-owners-guide-to-insurance/specific-coverages/liability-insurance). Insurance Information Institute; Heading Umbrella Liability Insurance; sentence Umbrella Liability—also known as Excess Liability Insurance; underlying policies listed with limits; typically GL, auto and employers’ liability; starts when a covered loss exhausts the primary per occurrence limit; Most umbrella policies exclude EPL, professional liability, product recall, workers compensation, asbestos, pollution, war and terrorism. Accessed 2026-09-16.
11. [Commercial Insurance Guide](https://www.insurance.ca.gov/01-consumers/105-type/95-guides/09-comm/commercialguide.cfm). California Department of Insurance; Commercial Umbrella; excess over a basic liability policy; auto/CGL/WC or any liability policy can be covered; may respond if basic policy not in force or for gaps; SIR when no underlying. Accessed 2026-09-16.
12. [Lines of Insurance](https://www.insurance.ca.gov/0200-industry/0050-renew-license/0200-requirements/casualty/lines-of-ins.cfm). California Department of Insurance; Umbrella or Excess Liability Policy: excess limits over existing liability; may provide additional coverages not provided by underlying policies. Accessed 2026-09-16.
13. [Coverage Hub](https://www.coverdash.com/coverage). Coverdash; Excess & Specialty: Umbrella; Excess Liability. Accessed 2026-09-16.
14. [Products](https://kinro.com/products). Kinro; 09 Umbrella/Excess: additional limits above scheduled underlying policies; when to review; reviewed with. 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).

## Corgi Review Scores for 2026

Review Score: not enough ratings.

The reviewed sources did not yield customer reviews; the inspected Trustpilot profiles showed none. Its Trustpilot page exists but shows no reviews or rating.



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

## Agent and Developer Resources

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