What Is AIG?
AIG is the marketing name for American International Group, Inc.; AIG says its insurance products are written or provided by subsidiaries or affiliates. Its U.S. business pages list commercial casualty, property, cyber, management and professional liability, and specialty programs, but a brand-level page does not identify the insurer for a particular policy. 1,2
What Is Gallagher?
Gallagher’s technology specialists serve startups through global enterprises, while its executive-risk team supports IPO and M&A needs; small firms seeking one simple digital quote should compare online agencies. 4,5,6,7,8
Read the Gallagher Umbrella and Excess Liability Insurance page
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. 10,11,12,13,14
Key Differences in Umbrella and Excess Liability Insurance
Form and underlying coverage
AIG markets lead umbrella, mid-excess, and high-excess positions and advertises up to $75 million on an individual account subject to underwriting. Gallagher places umbrella and excess within a broader casualty program and describes custom program design without publishing attachment points or limits. A buyer should obtain a layer-by-layer schedule from Gallagher and compare it with the capacity AIG can offer for the same underlying structure. 3 9
Capacity and buyer support
Gallagher describes pre-renewal meetings, contract and form review, gap analysis, and a claims and loss-control advocacy group. AIG names its own risk and claims specialists and litigation-management strategies. Ask who reviews legacy losses, coordinates with underlying carriers, and advocates after a claim. 3 9
What to Confirm in Umbrella and Excess Liability Insurance Quotes
AIG and Gallagher Review Scores for 2026
These averages can combine ratings for different products, locations, and customer groups, including approximate BBB grade conversions. Read each review for the sources, scope, and calculation.
AIG Review Score
Review Score
2 rated sources
Customer ratings for AIG are low: Trustpilot shows 1.9 out of 5 from 252 reviews, and NerdWallet gives 2.5 stars and notes more claims complaints than expected. These pages cover many AIG products and countries, so they only loosely describe business insurance.[1][2]
Read AIG reviewsGallagher Review Score
Review Score
3 rated sources
Gallagher has strong Trustpilot feedback and a favorable historical large-commercial survey result. Neither directly measures today’s US small-business service.[2][4][6]
Read Gallagher reviewsAIG vs Gallagher Umbrella and Excess Liability Insurance Compared
AIG vs Gallagher: Umbrella and Excess Liability Insurance: documented features by provider
| Criteria | AIG Excess Casualty and Lead Umbrella | Gallagher Umbrella/Excess Liability Insurance |
|---|---|---|
| Role in This Line | AIG markets admitted and non-admitted excess casualty capacity, including lead umbrella, mid-excess and high-excess positions. The legal insurer and structure for a specific tower are account-specific. 3Company-reported. Role in this product is limited to the description on the linked AIG source. | Gallagher's Casualty practice places umbrella and excess liability coverage with outside carriers as one line within a broader casualty program; it does not underwrite the policy. 9Company-reported. Group-level casualty practice page. |
| Issuing Insurer | Confirm in your quote. | The casualty practice page does not name the insurer that would issue a given client's umbrella or excess policy. 9Not publicly disclosed. Checked the group-level casualty practice page. |
| Who It’s For | AIG describes lead umbrella, mid-excess and high-excess placements for a wide range of accounts, including small-business and corporate risks. It does not state an account-specific appetite or attachment eligibility. 3Company-reported. Audience is the segment AIG names on the linked source; this is not an underwriting decision, quote or guarantee of availability. | The casualty practice page does not name a target industry, size or minimum premium for umbrella/excess placements; it describes the practice generally as serving clients with a broader casualty program. 9Not publicly disclosed. Checked the group-level casualty practice page on 2026-09-23. |
| Coverage Features | AIG describes excess liability protection against severe liabilities and lead umbrella placements that may integrate with other casualty lines. The exact underlying policies, attachment points and follow-form terms depend on the placement. 3Company-reported. AIG’s public product description is not the policy. Actual entitlement depends on the applicable issued form, endorsements and declarations. | Gallagher groups umbrella/excess liability with automobile liability, workers' compensation and general/product liability under its casualty practice, offering "customized excess casualty program design and placement" and non-traditional alternative risk programs, but does not describe specific attachment points, exclusions or triggers. 9Company-reported. Group-level casualty practice page; a service description, not a specific policy's insuring agreement. |
| Limits and Retentions | AIG advertises up to $75 million total capacity on an individual-account basis, subject to underwriting. This is not a standard or guaranteed limit for a buyer. 3Not publicly disclosed. This statement reports only what the linked public source discloses and does not substitute for a quote or issued policy. | The casualty practice page does not publish specific umbrella/excess limits, attachment points or premium ranges; it says program structure, coverage, limits and pricing are designed to fit the client's current and future needs. 9Not publicly disclosed. Checked the group-level casualty practice page. |
| Risk Services | AIG describes in-house risk experts, claims specialists, litigation-management strategies and integration with domestic and foreign casualty platforms. Those services do not change policy wording. 3Company-reported. The linked page describes company-reported support; specific account services and third-party arrangements must be confirmed. | Gallagher describes pre-renewal meetings with a client's finance, HR, operations and risk-management stakeholders, a gap analysis and contract/form review to close coverage gaps between policies, and a dedicated claims and loss-control advocacy group that reviews legacy loss information to build claim-mitigation and loss-prevention programs. 9Company-reported. Group-level casualty practice page; described at the practice level across all casualty lines, not exclusively for umbrella/excess. |
Related Pages for AIG vs Gallagher Umbrella and Excess Liability
Umbrella and Excess Liability Insurance Pages for AIG and Gallagher
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Sources for AIG vs Gallagher Umbrella and Excess Liability Insurance
Sources About AIG
- Investor Relations. American International Group, Inc. (AIG); About AIG and legal footer; lines 244–246 and 327–331. Accessed 2026-09-28.
- Business. AIG US; Surplus Lines heading and paragraph, lines 357–359. Accessed 2026-09-28.
- Excess Casualty Insurance. AIG; Official AIG Excess Casualty page: admitted/non-admitted options, lead umbrella/mid/high excess placements, advertised per-account capacity subject to underwriting, domestic/foreign integration, risk and claims services. Accessed 2026-09-30.
Sources About Gallagher
- Technology Insurance. Gallagher; Introduction; Solutions and coverages for the technology industry: Technology errors and omissions including cyber, Intellectual property insurance, Product liability, Employee benefits; Data-driven insights; global network. Accessed 2026-09-16.
- Insurance for Technology & IT Businesses. Gallagher Small Business; Protection for IT Professionals & Their Technology-Based Businesses; recommended coverage menu, including Surety Bond Programs; Connect With An Advisor. Accessed 2026-09-16.
- Executive and Financial Risk Insurance. Gallagher; Opening (insurance broking and placement); three key services; Directors and Officers; IPO and direct listings; Employment Practices; Fiduciary; Employee Dishonesty (Crime) and Fidelity Bond; Kidnap, Ransom and Extortion; M&A Transactional Insurance. Accessed 2026-09-16.
- Legal Information. Gallagher Small Business; Producer identification immediately above Quick Links. Accessed 2026-09-16.
- Woodruff Sawyer Is Now Gallagher. Gallagher; Opening; Executive and Financial Risk consulting; Continued access to client portals; contact form. Accessed 2026-09-16.
- Casualty Insurance. Gallagher; Holistic approach for better insurance and risk management in casualty: Automobile Liability, Workers Compensation, General/Product Liability, Umbrella/Excess Liability and alternative forms of risk transfer; Robust casualty risk analysis process; Casualty Practice Summary. Accessed 2026-09-23.
Sources for the Umbrella and Excess Liability Insurance Guide
- 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.
- Commercial Insurance Guide. 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.
- Lines of Insurance. 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.
- Coverage Hub. Coverdash; Excess & Specialty: Umbrella; Excess Liability. Accessed 2026-09-16.
- Products. Kinro; 09 Umbrella/Excess: additional limits above scheduled underlying policies; when to review; reviewed with. Accessed 2026-09-16.
