Who writes commercial auto in Washington
The 65 largest writers by premium in 2025 from the Washington Office of the Insurance Commissioner and the Surplus Line Association of Washington market report (a top-65 list, shares of earned premium).
The 65 largest writers of commercial auto in Washington in 2025: United Financial Casualty Company led with 23.9% of the state's premium; the top five hold 49%.
By Sam Alishahi, independent insurance broker · All lines in Washington
The companies
| # | Company | NAIC | Home state | Status here | Premium | Share |
|---|---|---|---|---|---|---|
| 1 | United Financial Casualty Company | 11770 | OH | Admitted (licensed) | $213.9M | 23.93% |
| 2 | Western National Mutual Insurance Company | 15377 | MN | Admitted (licensed) | $73.2M | 8.18% |
| 3 | Great West Casualty Company | 11371 | NE | Admitted (licensed) | $67.2M | 7.52% |
| 4 | Ohio Security Insurance Company | 24082 | NH | Admitted (licensed) | $57.1M | 6.38% |
| 5 | Zurich American Insurance Company | 16535 | NY | Admitted (licensed) | $28.0M | 3.13% |
| 6 | Alaska National Insurance Company | 38733 | AK | Admitted (licensed) | $24.6M | 2.75% |
| 7 | Federated Reserve Insurance Company | 16024 | MN | Admitted (licensed) | $20.3M | 2.27% |
| 8 | Northland Insurance Company | 24015 | CT | Admitted (licensed) | $19.5M | 2.18% |
| 9 | Mutual of Enumclaw Insurance Company | 14761 | OR | Admitted (licensed) | $19.0M | 2.12% |
| 10 | Old Republic Insurance Company | 24147 | PA | Admitted (licensed) | $17.8M | 1.99% |
| 11 | Travelers Indemnity Company of Connecticut (The) | 25682 | CT | Admitted (licensed) | $17.7M | 1.98% |
| 12 | Philadelphia Indemnity Insurance Company | 18058 | PA | Admitted (licensed) | $17.6M | 1.97% |
| 13 | Middlesex Insurance Company | 23434 | WI | Admitted (licensed) | $16.8M | 1.88% |
| 14 | National Union Fire Insurance Company of Pittsburgh, Pennsylvania | 19445 | PA | Admitted (licensed) | $16.7M | 1.87% |
| 15 | Fire Insurance Exchange Fire Underwriters Association | 21660 | CA | Admitted (licensed) | $16.1M | 1.80% |
| 16 | Berkshire Hathaway Homestate Insurance Company | 20044 | NE | Admitted (licensed) | $15.8M | 1.77% |
| 17 | Sentry Select Insurance Company | 21180 | WI | Admitted (licensed) | $15.2M | 1.70% |
| 18 | Integon National Insurance Company | 29742 | IL | Admitted (licensed) | $14.1M | 1.58% |
| 19 | State Farm Mutual Automobile Insurance Company | 25178 | IL | Admitted (licensed) | $12.5M | 1.40% |
| 20 | Travelers Indemnity Company (The) | 25658 | CT | Admitted (licensed) | $12.5M | 1.40% |
| 21 | Travelers Casualty Insurance Company of America | 19046 | CT | Admitted (licensed) | $12.5M | 1.39% |
| 22 | Pioneer Specialty Insurance Company | 40312 | MN | Admitted (licensed) | $12.5M | 1.39% |
| 23 | National Interstate Insurance Company | 32620 | OH | Admitted (licensed) | $12.4M | 1.39% |
| 24 | Arch Insurance (UK) Limited | 11150 | MO | Admitted (licensed) | $12.2M | 1.36% |
| 25 | Cincinnati Insurance Company (The) | 10677 | OH | Admitted (licensed) | $12.1M | 1.35% |
| 26 | Empire Fire and Marine Insurance Company | 21326 | IL | Admitted (licensed) | $11.6M | 1.30% |
| 27 | Hartford Fire Insurance Company | 19682 | CT | Admitted (licensed) | $9.9M | 1.11% |
| 28 | West American Insurance Company | 44393 | IN | Admitted (licensed) | $8.9M | 1.00% |
| 29 | Travelers Property Casualty Company of America | 25674 | CT | Admitted (licensed) | $8.7M | 0.97% |
| 30 | Western National Assurance Company | 24465 | MN | Admitted (licensed) | $8.6M | 0.96% |
| 31 | Allmerica Financial Benefit Insurance Company | 41840 | MI | Admitted (licensed) | $8.2M | 0.92% |
| 32 | COUNTRY Mutual Insurance Company | 20990 | IL | Admitted (licensed) | $7.7M | 0.86% |
| 33 | Canal Insurance Company | 10464 | SC | Admitted (licensed) | $7.6M | 0.85% |
| 34 | American Bankers Insurance Company of Florida | 10111 | FL | Admitted (licensed) | $6.8M | 0.76% |
| 35 | Liberty Mutual Fire Insurance Company | 23035 | WI | Admitted (licensed) | $6.7M | 0.75% |
| 36 | Everest Denali Insurance Company | 16044 | DE | Admitted (licensed) | $6.7M | 0.75% |
| 37 | Federal Insurance Company | 20281 | IN | Admitted (licensed) | $6.5M | 0.72% |
| 38 | Continental Western Insurance Company | 10804 | IA | Admitted (licensed) | $6.4M | 0.71% |
| 39 | Ace American Insurance Company | 22667 | PA | Admitted (licensed) | $5.6M | 0.63% |
| 40 | Midvale Indemnity Company | 27138 | WI | Admitted (licensed) | $5.6M | 0.62% |
| 41 | Navigators Insurance Company | 42307 | NY | Admitted (licensed) | $5.5M | 0.61% |
| 42 | Federated Mutual Insurance Company | 13935 | MN | Admitted (licensed) | $3.3M | 0.37% |
| 43 | Grange Insurance Association | 22101 | WA | Admitted (licensed) | $2.6M | 0.29% |
| 44 | Great American Assurance Company | 26344 | OH | Admitted (licensed) | $2.2M | 0.24% |
| 45 | Penn Millers Insurance Company | 14982 | PA | Admitted (licensed) | $2.1M | 0.24% |
| 46 | Preferred Professional Insurance Company | 36234 | NE | Admitted (licensed) | $1.8M | 0.20% |
| 47 | Oregon Mutual Insurance Company | 14907 | OR | Admitted (licensed) | $1.7M | 0.19% |
| 48 | Travelers Indemnity Company of America (The) | 25666 | CT | Admitted (licensed) | $1.4M | 0.16% |
| 49 | Truck Insurance Exchange | 21709 | CA | Admitted (licensed) | $103,000 | 0.01% |
| 50 | Eagle West Insurance Company | 12890 | CA | Admitted (licensed) | $88,000 | 0.01% |
| 51 | Mid-Century Insurance Company | 21687 | CA | Admitted (licensed) | $88,000 | 0.01% |
| 52 | State Farm Fire and Casualty Company | 25143 | IL | Admitted (licensed) | $86,000 | 0.01% |
| 53 | Nationwide Agribusiness Insurance Company | 28223 | IA | Admitted (licensed) | $81,000 | 0.01% |
| 54 | Austin Mutual Insurance Company | 13412 | FL | Admitted (licensed) | $66,000 | 0.01% |
| 55 | MS Transverse Insurance Company | 21075 | TX | Admitted (licensed) | $64,000 | 0.01% |
| 56 | Western Community Insurance Company | 39519 | ID | Admitted (licensed) | $54,000 | 0.01% |
| 57 | General Insurance Company of America | 24732 | NH | Admitted (licensed) | $49,000 | 0.01% |
| 58 | Farmers Insurance Exchange | 21652 | CA | Admitted (licensed) | $47,000 | 0.01% |
| 59 | Sompo America Insurance Company | 11126 | NY | Admitted (licensed) | $44,000 | 0.00% |
| 60 | Vanliner Insurance Company | 21172 | OH | Admitted (licensed) | $38,000 | 0.00% |
| 61 | Midwest Family Mutual Insurance Company | 23574 | IA | Admitted (licensed) | $36,000 | 0.00% |
| 62 | Brotherhood Mutual Insurance Company | 13528 | IN | Admitted (licensed) | $28,000 | 0.00% |
| 63 | AXIS Insurance Company | 37273 | IL | Admitted (licensed) | $24,000 | 0.00% |
| 64 | Harco National Insurance Company | 26433 | IL | Admitted (licensed) | $23,000 | 0.00% |
| 65 | Mitsui Sumitomo Insurance Company of America | 20362 | NY | Admitted (licensed) | $19,000 | 0.00% |
Method and source
Source: the Washington Office of the Insurance Commissioner and the Surplus Line Association of Washington company list, read 2026-10-17 and the surplus lines list. Washington's authorized list comes from the OIC's 2025 market report (Appendix D), which leaves out authorized companies with no premium that year. Premiums are in thousands. "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.
Someone will insure it. I find who.
Send what you need covered and what happened before. I match it to the companies that take it, down to the last-resort plan if it comes to that. I'm licensed in 48 states and Washington, DC and your request stays with my agency, not passed to another agent. In Florida and Washington, where my licenses are still being issued, a partner agency in your state helps in the meantime.
Get a reminder before your renewal.
Tell me when your policy renews and I’ll email you about six weeks before, when it’s worth comparing. One email, no calls.