| Circular Number | Circular Title | Summary | State(s) |
| LI-CF-2026-034 | PENNSYLVANIA COMMERCIAL FIRE AND ALLIED LINES ADVISORY PROSPECTIVE LOSS COST REVISION FILED | ISO announces revised advisory prospective loss costs reflecting a loss cost level change of -1.1% have been filed. ISO cautions the filing has not yet been implemented. The changes are applicable to all policies written on or after June 1, 2026. | PA |
| LI-PA-2026-025, LP-AA-2026-001 | PERSONAL AUTO 2024 LIABILITY AND PIP/MEDICAL PAYMENTS (LPMP) VEHICLE RATING PLAN REVISION TO BE IMPLEMENTED IN MASSACHUSETTS | ISO announces they are implementing the 2024 liability and PIP/medical payments vehicle rating plan revision in Massachusetts, stating that they have received the necessary approvals from the state insurance department. | MA |
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Circular Tracker 1-23-26
A summary of the ISO Circular for January 23, 2026. Circulars provide a wide variety of information from form changes to rules, loss costs, experience reviews, and other information.
Ray Sugrim | January 23, 2026