---
title: "Marsh McLennan Agency vs TechInsurance: Professional Liability (E&O) Insurance"
description: "TechInsurance E&O overview gives policy basis and price factors; MMA product overview names specialist lines."
canonical: "https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/professional-errors-omissions"
page-type: "line-comparison"
updated-at: "2026-09-30"
comparison-pair: "marsh-mclennan-agency-vs-techinsurance"
provider-a: "marsh-mclennan-agency"
provider-b: "techinsurance"
coverage-line: "professional-errors-omissions"
---

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[Human-readable page](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/professional-errors-omissions)

## Agent Guide

**What this page is:** Focused comparison of Marsh McLennan Agency and TechInsurance 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 Marsh McLennan Agency versus TechInsurance. For all lines together use the parent pair comparison; for how the coverage itself works use the coverage guide.

**Questions this page answers:**
- Marsh McLennan Agency vs TechInsurance for Professional Liability (E&O) Insurance: how do they differ?
- Which is better for Professional Liability (E&O) Insurance, Marsh McLennan Agency or TechInsurance?
- What does Marsh McLennan Agency or TechInsurance 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 Marsh McLennan Agency or TechInsurance?

**Key facts:**
- Line: Professional Liability (E&O) Insurance. Providers: Marsh McLennan Agency and TechInsurance.
- 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:**
- [Marsh McLennan Agency vs TechInsurance](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance) — 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
- [Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency) — provider profile (evidence)
- [TechInsurance profile](https://spot.insure/insurance-providers/techinsurance) — provider profile (evidence)
- [Marsh McLennan Agency vs TechInsurance Commercial Auto Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/commercial-auto) — sibling comparison (other line, or other pair for this line)
- [Marsh McLennan Agency vs TechInsurance Commercial Property Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/commercial-property) — sibling comparison (other line, or other pair for this line)
- [Marsh McLennan Agency vs TechInsurance Employment Practices Liability Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/employment-practices) — sibling comparison (other line, or other pair for this line)
- [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [AIG vs TechInsurance Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-techinsurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Alliance Risk vs TechInsurance Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-techinsurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Aon vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [At-Bay vs TechInsurance Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-techinsurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)
- [Beazley vs TechInsurance Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-techinsurance/professional-errors-omissions) — sibling comparison (other line, or other pair for this line)

# Marsh McLennan Agency vs TechInsurance: How Do They Compare for Professional Liability (E&O) Insurance?

TechInsurance E&O overview gives policy basis and price factors; MMA product overview names specialist lines.

## Research Scope and Use

Use this comparison to evaluate Marsh McLennan Agency and TechInsurance 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.

## Summary

Marsh McLennan Agency names E&O, architects-and-engineers, and lawyers professional liability as distinct professional lines. TechInsurance describes E&O covering negligence, incomplete work, breach of contract, missed deadlines, and misrepresentation, with defense costs and resulting judgments or settlements. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance")

## What Is Marsh McLennan Agency?

Marsh McLennan Agency provides business insurance and employee health and benefits, alongside retirement, wealth, and private-client services across the United States and Canada. Its US small-business page lists six common coverage types and directs buyers to request a personalized quote by phone; the insurer and terms for a specific placement must be confirmed in the proposal. [1](https://www.marshmma.com/us/mma/about-us.html "Who We Are") [2](https://www.marshmma.com/us/solutions/small-business.html "Small Business Insurance Solutions")

[Marsh McLennan Agency profile](https://spot.insure/insurance-providers/marsh-mclennan-agency)

## What Is TechInsurance?

TechInsurance fits freelancers and small software, SaaS and IT firms that want to compare several insurers' quotes from one application, with agent help and a tech E&O plus cyber bundle. Growth-stage companies needing a managed renewal program or firm quote deadlines should look at specialist brokers. [4](https://www.techinsurance.com/about-us "About TechInsurance") [5](https://www.techinsurance.com/errors-omissions-insurance/technology-errors-omissions-coverage "Technology Errors and Omissions – Tech E&O Insurance") [6](https://www.techinsurance.com/contact-us "Contact Us")

[TechInsurance profile](https://spot.insure/insurance-providers/techinsurance)

## 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")

## Key Differences in Professional Liability (E&O) Insurance

### Which Professional Work Is Named

TechInsurance says its E&O policies are claims-made: the policy must be active when the incident happens and when the claim is filed. MMA’s overview does not state whether its professional lines are claims-made or occurrence-based, so buyers comparing older work need to establish the retroactive date and reporting options in each quote. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance")

### Placement Scope and Buying Route

TechInsurance gives a median premium of $88 per month and says price depends on profession, limits, deductible, staff, claims history, and income. MMA publishes no universal price or limit in the reviewed overview; compare actual premiums with the limits and retentions offered. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance")

## What to Confirm in Professional Liability (E&O) Insurance Quotes

- What retroactive date and extended reporting option does TechInsurance quote, and what events trigger coverage? [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance")
- What policy basis, retroactive date, limits, retentions, and premium would MMA propose? [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA")

## Offering Details

| Criteria | Marsh McLennan Agency professional errors omissions (official overview) | TechInsurance Errors and Omissions Insurance |
| --- | --- | --- |
| Role in This Line | Marsh McLennan Agency describes arranging professional errors omissions for the audience stated on the cited product page. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | TechInsurance arranges errors and omissions (E&O) insurance, also called professional liability insurance, as a standalone policy for businesses that provide professional services or advice. [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance") (Evidence: Company-reported; scope: Errors and omissions product page..) |
| Issuing Insurer | Confirm in your quote. | The reviewed page does not name the issuing insurer for an E&O policy. [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance") (Evidence: Not publicly disclosed; scope: Errors and omissions product page as read on 2026-09-23..) |
| Who It’s For | Organizations seeking professional liability placement; source does not imply all professions share one policy. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | TechInsurance targets E&O at businesses that provide professional services or advice, naming IT and software professionals, cybersecurity and SaaS companies, insurance agents, real estate agents, tax preparers and consultants as example segments, and notes it is sometimes required by state law or licensing boards. [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance") (Evidence: Company-reported; scope: Errors and omissions product page, Who should get errors and omissions insurance coverage? section..) |
| Coverage Features | The cited product page describes E&O and named specialist professional lines, including architects and engineers and lawyers professional liability; the overview does not treat them as one form. Marketing description only; actual coverage, exclusions, conditions, limits, and availability depend on the issued policy and jurisdiction. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | TechInsurance says E&O insurance covers professional negligence claims, errors or incomplete work, breach of contract, missed deadlines, misrepresentation of skill level, and communication-related disputes, and pays legal defense costs and any resulting judgment or settlement. [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance") (Evidence: Company-reported; scope: Errors and omissions product page; general policy description, not a specific policy form..)<br><br>TechInsurance says its E&O policies are claims-made, meaning coverage applies only if the policy was active both when the incident occurred and when the claim was filed, and recommends keeping the policy active or setting a retroactive date to cover past work. [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance") (Evidence: Company-reported; scope: Errors and omissions product page, Why is it important to keep your E&O insurance policy active? section..) |
| Limits and Retentions | 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. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Not publicly disclosed; scope: Only the cited marketing page was reviewed for published limit and retention information; no policy-form entitlement is inferred..) | TechInsurance says its E&O policyholders pay a median of $88 per month, or $1,051 a year, with the exact premium depending on location, profession risk level, coverage limits, deductible, employee count, claims history and annual income. [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance") (Evidence: Company-reported; scope: Errors and omissions product page cost section; a company-reported median from TechInsurance's own book of business, not a published rate table..) |
| How to Apply | The page invites organizations to contact a Marsh McLennan Agency adviser or specialist to discuss placement. The page does not establish a quote, bind, or coverage-effective timeline. [3](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html "Executive and Professional Liability | MMA") (Evidence: Company-reported; scope: professional errors omissions marketed by marsh-mclennan-agency; scope is limited to the cited official product overview and described audience. This is not a policy form or a universal eligibility statement..) | Confirm in your quote. |
| Claims Support | Confirm in your quote. | TechInsurance says that if a client threatens to sue, you contact your carrier directly, provide policy information and explain the circumstances, and the insurer's representative helps determine next steps. [7](https://www.techinsurance.com/errors-omissions-insurance "Errors & Omissions (E&O) Insurance") (Evidence: Company-reported; scope: Errors and omissions product page, How does E&O insurance coverage work? section..) |

## Full Comparison

- [Marsh McLennan Agency vs TechInsurance](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance): 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.
- [Marsh McLennan Agency vs TechInsurance Commercial Auto Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/commercial-auto)
- [Marsh McLennan Agency vs TechInsurance Commercial Property Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/commercial-property)
- [Marsh McLennan Agency vs TechInsurance Employment Practices Liability Insurance](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/employment-practices)
- [AIG vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-marsh-mclennan-agency/professional-errors-omissions)
- [AIG vs TechInsurance Professional Liability (E&O) Insurance](https://spot.insure/compare/aig-vs-techinsurance/professional-errors-omissions)
- [Alliance Risk vs TechInsurance Professional Liability (E&O) Insurance](https://spot.insure/compare/alliance-risk-vs-techinsurance/professional-errors-omissions)
- [Aon vs Marsh McLennan Agency Professional Liability (E&O) Insurance](https://spot.insure/compare/aon-vs-marsh-mclennan-agency/professional-errors-omissions)
- [At-Bay vs TechInsurance Professional Liability (E&O) Insurance](https://spot.insure/compare/at-bay-vs-techinsurance/professional-errors-omissions)
- [Beazley vs TechInsurance Professional Liability (E&O) Insurance](https://spot.insure/compare/beazley-vs-techinsurance/professional-errors-omissions)

## Sources

### Marsh McLennan Agency

1. [Who We Are](https://www.marshmma.com/us/mma/about-us.html). Marsh McLennan Agency; Lines 193-195: ‘a business of Marsh’ and company-listed service lines across US and Canada. This does not establish the legal entity for an account, corporate ownership chart, or insurer role.. Accessed 2026-09-29.
2. [Small Business Insurance Solutions](https://www.marshmma.com/us/solutions/small-business.html). Marsh McLennan Agency; Lines 205-207: small-business audience and call invitation; lines 224-249 list six coverage categories and short descriptions; line 264 is an embedded form whose function is not stated. No form submitted.. Accessed 2026-09-29.
3. [Executive and Professional Liability | MMA](https://www.marshmma.com/us/solutions/executive-and-professional-liability.html). Marsh McLennan Agency; E&O, architects and engineers, and lawyers professional lines are named in the policy suite.. Accessed 2026-09-30.

### TechInsurance

4. [About TechInsurance](https://www.techinsurance.com/about-us). TechInsurance; Opening description; one-application process; History of TechInsurance, 2011 and 2022 entries. Accessed 2026-09-16.
5. [Technology Errors and Omissions – Tech E&O Insurance](https://www.techinsurance.com/errors-omissions-insurance/technology-errors-omissions-coverage). TechInsurance; Tech E&O insurance includes two policies; quotation form; Technology professionals we insure. Accessed 2026-09-16.
6. [Contact Us](https://www.techinsurance.com/contact-us). TechInsurance; FAQs: How does TechInsurance work? (agent assistance obtaining surety bonds); agent or broker role; application; finding quotes; updating address; certificates. Accessed 2026-09-16.
7. [Errors & Omissions (E&O) Insurance](https://www.techinsurance.com/errors-omissions-insurance). TechInsurance; What does errors and omissions insurance cover? (professional negligence, errors or incomplete work, breach of contract, missed deadlines, misrepresentation, communication challenges); How much does E&O insurance cost?; Who should get errors and omissions insurance coverage?; How does E&O insurance coverage work? (claims-made). Accessed 2026-09-23.

### 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.

## Marsh McLennan Agency Reviews

Review Score: 8.2 / 10 from 2 rated sources, equally weighted.

There are almost no public customer reviews of Marsh McLennan Agency (MMA). Trustpilot shows 3.2 out of 5, but from a single review, and BBB shows an A grade with four complaints closed in three years.

- Trustpilot: TrustScore 3.2 (out of 5); 1 reviews. Trustpilot profile for marshmma.com, MMA's own domain. Unclaimed; MMA has not invited reviews. Period: checked 2026-09-29. Checked 2026-09-29. [marshmma.com Trustpilot profile](https://www.trustpilot.com/review/marshmma.com)
- Trustpilot: TrustScore (Marsh brand) 1.3 (out of 5); 115 reviews. Trustpilot page for marsh.com, the global Marsh brand (mostly individual and non-US customers). This is a different entity from MMA. Period: checked 2026-09-29. Checked 2026-09-29. [Marsh Reviews](https://www.trustpilot.com/review/www.marsh.com)
- BBB: BBB business grade A. BBB San Diego-area profile for Marsh & McLennan Agency LLC (accredited). MMA has separate BBB profiles per office; Dayton and Schaumburg both show A+. Checked 2026-09-29. [Marsh & McLennan Agency LLC (San Diego) BBB](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103)
- BBB: Complaints 4. Same San Diego-area profile; zero customer reviews. No client-count denominator. Period: closed in the last three years (checked 2026-09-29). Checked 2026-09-29. [Marsh & McLennan Agency LLC — BBB Complaints](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/complaints); [Marsh & McLennan Agency LLC — BBB Reviews](https://www.bbb.org/us/ca/san-diego/profile/insurance-services-office/marsh-mclennan-agency-llc-1126-3000103/customer-reviews)

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

## TechInsurance Reviews

Review Score: 9.1 / 10 from 2 rated sources, equally weighted.

TechInsurance’s available ratings are favorable, with praise for broker guidance. The feedback supports its shopping service more than any particular insurer’s claims handling.

- Trustpilot: Trustpilot TrustScore 4.4 (5 stars); 311 reviews. Self-selected consumer aggregate; product and business/personal scope may be mixed. Period: accessed 2026-09-25. Checked 2026-09-25. [Trustpilot result for TechInsurance](https://uk.trustpilot.com/review/techinsurance.com)
- ConsumerAffairs: ConsumerAffairs consumer rating 4.7 (5 stars); 25 reviews. Self-selected consumer aggregate; product and business/personal scope may be mixed. Period: updated 2026-08-14; accessed 2026-09-25. Checked 2026-09-25. [ConsumerAffairs result for TechInsurance](https://www.consumeraffairs.com/insurance/techinsurance.html)

Reviewed 2026-09-25. [Read the sourced review](https://spot.insure/insurance-providers/techinsurance/reviews).

## Agent and Developer Resources

- [Markdown page](https://spot.insure/compare/marsh-mclennan-agency-vs-techinsurance/professional-errors-omissions.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)