Commercial-auto insurers lost money on underwriting in 2023

Per the NAIC's 2023 Report on Profitability by Line by State, commercial auto ran roughly a 74% loss ratio and posted an underwriting loss — the worst of the major commercial lines. That's the structural pressure behind the commercial-auto rate increases showing up in filings: when a line loses money on underwriting nationally, carriers file for rate. If you run vehicles, expect commercial-auto to be the line most likely to see increases at renewal.

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