Who writes commercial auto in Michigan
Top insurer groups from the NAIC market share report; the state's own licensed-company list isn't available in a form a program can read.
Progressive Group wrote the most commercial auto in Michigan in 2025, $188.6M and 10.5% of the state's premium; the top five groups hold 33%. Michigan doesn't publish a machine-readable list of every licensed company, so the ranking below is the NAIC's top 10 groups.
By Sam Alishahi, independent insurance broker · All lines in Michigan
Method and source
Top insurer groups from the NAIC market share report; the state's own licensed-company list isn't available in a form a program can read. "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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