California Commercial Auto Insurance Rate Changes: 2026
Across 564 California commercial auto filings that state an overall rate change, the median change is +12.1% and the mean is +15.66%: 70.7% of filings increased rates against 2% that decreased them (27.3% filed no change).
Source: the California Department of Insurance's own public filing notices, as extracted into Get Business Coverage's regulatory corpus. Commercial auto filings (Auto Liability / Physical Damage) stating an overall rate change; identifiers and percentages verbatim from the notices. View the California Department of Insurance public rate-filing notices ↗
The numbers
| Filings with a rate change stated | 564 |
| Median change | +12.1% |
| Mean change | +15.66% |
| Share that increased | 70.7% |
| Share unchanged | 27.3% |
| Share that decreased | 2% |
California files through its own CDI public-notice system rather than SERFF, which is why this corpus exists at all — the notices are the public record, and every number above traces to one.