Who writes inland marine in Minnesota
Top insurer groups from the NAIC market share report; the state's list carries no lines of authority.
Liberty Mutual Group wrote the most inland marine in Minnesota in 2025, $93.5M and 15.4% of the state's premium; the top five groups hold 37%. Minnesota'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 Minnesota page.
By Sam Alishahi, independent insurance broker · All lines in Minnesota
Method and source
Source: the Minnesota insurance regulator company list, read 2026-10-18 and the surplus lines list. Minnesota Dept. of Commerce 'Insurance Supplement' financial summaries. admitted = every licensed Property and Casualty insurer (Domestic + Foreign and Alien), data year 2023, 921 rows (PDF total 921); P&C only (life/health insurers are a separate PDF, not included), so type is 'Property and Casualty' for all rows. No NAIC codes, no lines of authority and no license dates in the source: match by name + domicile. Rows with a status instead of financials (e.g. Liquidation) keep it in 'status'. surplus_lines = 'Eligible Property and Casualty Insurers, Surplus Lines--Foreign' (154) and '--Aliens' (21), data year 2021 (no 2023 edition published); these are the surplus lines insurers that reported Minnesota business, not an official eligibility roster (Commerce keeps none; Minn. Stat. 60A.206). Alien domicile codes are the PDF's own 2-letter country codes (UK, GE, IR, BU, BB, IT ...). The same PDF's accredited reinsurers (13) and registered risk retention groups (90) are excluded from surplus_lines. Source footer: unaudited, may contain inadvertent errors. "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.
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