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Directory · Massachusetts · Warranty

Who writes warranty in Massachusetts

Top insurer groups from the NAIC market share report; the state's list carries no lines of authority.

Zurich Insurance Group wrote the most warranty in Massachusetts in 2025, $25.0M and 41.0% of the state's premium; the top five groups hold 89%. Massachusetts's company list doesn't say which lines each company is licensed for, so the ranking below is the NAIC's top 10 groups; every licensed company is on the Massachusetts page.

By Sam Alishahi, independent insurance broker · All lines in Massachusetts

Top 10 · NAIC table: 30 - Warranty

The insurer groups that write the most warranty in Massachusetts

Top 10 insurer groups by direct premium written in 2025, from the NAIC's Market Share Reports for Property/Casualty Groups and Companies by State. A group is the parent and its insurance companies together; share is the group's part of the state total for the line; loss ratio is losses incurred over premium earned.

#Insurer groupPremium writtenShareLoss ratioMember companies here
1Zurich Insurance Group$25.0M41.00%55%Zurich American Insurance Company, Rural Community Insurance Company, American Zurich Insurance Company, American Guarantee and Liability Insurance Company
2Allstate Insurance Group$21.8M35.75%118%Allstate Vehicle and Property Insurance Company, Allstate Fire and Casualty Insurance Company, Allstate Northbrook Indemnity Company, Allstate North American Insurance Company
3Old Republic Group$3.9M6.31%66%Old Republic Insurance Company, Great West Casualty Company, BITCO General Insurance Corporation, Pennsylvania Manufacturers' Association Insurance Company
4Starr Group$1.9M3.18%96%STARR INDEMNITY \u0026 LIABILITY COMPANY, Starr Surplus Lines Insurance Company, Starr Specialty Insurance Company
5Industrial Alliance Group$1.8M2.99%51%Dealers Assurance Company
6Cna Insurance Group$1.8M2.94%51%Continental Casualty Company, Continental Insurance Company, (The), American Casualty Company of Reading, Pennsylvania, National Fire Insurance Company of Hartford
7Tiptree Financial Group$1.6M2.58%104%Lyndon Southern Insurance Company, Response Indemnity Company of California, Fortegra Specialty Insurance Company, Insurance Company of the South
8Ally Insurance Holdings Group$994,0001.63%70%Motors Insurance Corporation, MIC Property and Casualty Insurance Corporation, CIM Insurance Corporation
9Assurant Inc Group$679,0001.11%32%Virginia Surety Company, Inc., American Bankers Insurance Company of Florida, American Security Insurance Company, Standard Guaranty Insurance Company
10American International Group$488,0000.80%—National Union Fire Insurance Company of Pittsburgh, Pennsylvania, AIG Property Casualty Company, Lexington Insurance Company, AIU Insurance Company
Turned down?

Last resort for warranty in Massachusetts

Last resortLinesWhereHow to get in
Surplus lines and Lloyd's open marketallall states, under each state's diligent-search rulesThrough surplus lines wholesalers; commercial property and liability have no guaranteed plan, so this is their last stepSource

Method and source

Source: the Massachusetts insurance regulator company list, read 2026-10-18 and the surplus lines list. MA Division of Insurance 'Licensed Or Approved Companies' workbook dated October 1, 2026 (sheet XLSX_Approved_Worksheet, 2717 rows across 23 company types). admitted = licensed insurers only: types Property & Casualty, Life, Accident & Health, Title, Fraternal, Health Maintenance Organization, Hospital (M&D) Service Plan (850 Property & Casualty; filter on type). Left out: TPAs, risk purchasing groups, risk retention groups, accredited/certified/reciprocal reinsurers, PBMs, service contract providers and other non-insurer registrants. The master file carries no domicile, lines of authority or license date; its State column is the mailing address, not domicile. domicile is 'MA' only for companies on the DOI's Domestic P&C list, else blank. lines come from the DOI's per-designation lists (Auto Liability 6G, Workers' Compensation 6E, Fidelity & Surety 4G) and are partial: a P&C company with no lines here may still hold other designations. surplus_lines = company types 'Surplus Lines' and 'Reinsurer/Surplus Lines'; eligible date not published; alien inferred (Lloyd's of London or non-US address) since the file gives no domicile. Source list page: https://www.mass.gov/lists/massachusetts-licensed-insurance-companies. "Premium" is direct premium written in the state for the year shown; "share" is that company's part of the state total for the line. A company can be licensed for a line and write none of it, and a surplus lines insurer can write a line without a state license for it.

Open to use. Cite "Alishahi Insurance insurance company directory" and link here. CSV · JSON.

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