Coalition vs Marsh: How Do They Compare for Professional Liability (E&O) Insurance?

Marsh places professional liability for specialized sectors like banking, venture capital and biotech, backed by attorneys and actuaries. Coalition markets professional liability to any business performing professional services, as an Active Cyber add-on.

Marsh serves specialized sectors such as banking, asset management and healthcare; Coalition offers MPL only with an Active Cyber quote. ^1,³

What Are the Key Differences Between Coalition and Marsh Professional Liability (E&O) Insurance?

Placement and Claims Support

Marsh places coverage with outside insurers, while Coalition combines MPL with its own cyber relationship. ³ ¹ Marsh describes attorneys, economists and actuaries assessing exposures before placement; Coalition describes an in-house claims team managing MPL and cyber claims together. ³ ¹ The services serve different stages; If you want exposure assessment before buying, Marsh describes that service; Coalition focuses on handling MPL and cyber claims together after purchase.

Coverage Breadth

Coalition lists defense costs, settlements, judgments and other expenses for professional-services errors on a duty-to-defend basis. ¹ Marsh says many policies it places also cover privacy violations and computer-security breaches, depending on the chosen wording. ³ Ask Marsh to confirm cyber terms for the specific quote.

What Should You Confirm in Coalition and Marsh Professional Liability (E&O) Insurance Quotes?

Ask Marsh which insurer it proposes and whether privacy and computer-security claims are included. ³
Ask Coalition whether Active Cyber is required and who issues the MPL. ¹ ²
Compare the insurer, limits, exclusions and claims service in each quote. ¹ ³

Coalition vs Marsh Professional Liability (E&O) Insurance Compared

Coalition vs Marsh: Professional Liability (E&O) Insurance: documented features by provider

Criteria	Coalition Miscellaneous Professional Liability (MPL)	Marsh Professional Liability Insurance Brokerage
Who It’s For	Coalition markets MPL to any business that performs professional services, naming examples such as consultants, marketing and PR firms, staffing firms, printers, interior decorators, photographers and videographers, and property managers. ¹Company-reported. Miscellaneous Professional Liability product page as read on 2026-09-23.	Marsh names specialized industries its professional liability experts serve, including banking and broker/dealers, insurance companies and asset managers, merchant banking and venture capital, accountants, attorneys, architects and engineers, media and entertainment, technology, and healthcare and biotechnology. ³Company-reported. Marsh professional liability page, What We Offer section.
Coverage Features	Coalition says MPL covers defense costs, settlements, judgments, and other expenses from claims of errors and omissions in professional services, including negligence, failure to provide service, and misstatements about the service performed, on a duty-to-defend basis even when the business is not ultimately at fault. ¹Company-reported. Miscellaneous Professional Liability product page as read on 2026-09-23; the issued policy controls actual terms.	Marsh says professional liability coverage can protect a company against liability and defense costs from a claim alleging an error, omission or negligence in performing professional services, and that many policies also cover privacy violations and computer security breaches. ³Company-reported. Marsh professional liability page opening description; illustrative policy description, not a specific policy form.
Role in This Line	Coalition designs and distributes MPL as an add-on coverage that combines with certain Active Cyber Insurance policies, sold through appointed brokers. ¹Company-reported. Miscellaneous Professional Liability product page as read on 2026-09-23.	Marsh's financial and professional liability practice places professional liability (errors and omissions) insurance; MMA also places E&O coverage within its executive and professional liability practice for middle-market clients. ^3,⁴Company-reported. Marsh professional liability page and MMA executive and professional liability page.