ISO endorsement · commercial auto

CA 03 01 Deductible Liability Coverage

Filings
237
latest Aug 28, 2026
Filing companies
105
52 carrier groups
States
35
including DC
Latest edition
09 27
most filed: 10 13

Coverage description

An Insurance Services Office (ISO) standard form. It applies a liability deductible, or a property damage only deductible, per accident to covered autos liability coverage and auto dealers general liability bodily injury and property damage coverage, and lets the insurer pay the deductible and seek reimbursement from you.

How the form has changed

1 change across 1 revision, newest first. Each edition is compared with the one before it, using wording from filed copies.

  1. 09 27 edition

    Sep 2027, compared with 10 13Latest edition
    • The liability deductible now applies to damages and covered pollution cost or expense combined for each accident.

      10 13

      “Schedule, the damages resulting from any one "accident" that are otherwise payable will be reduced by the Liability Deductible”

      09 27

      “the total of all damages and "covered pollution cost or expense" combined”

Editions

Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.

EditionFilingsCompaniesStatesFiled
09 27Sep 2027Latest17116Aug 2026 to Aug 2026
10 13Oct 20132059832Nov 2021 to Aug 2026
03 10Mar 20101173Jun 2022 to Jun 2026
03 06Mar 2006333Dec 2022 to Feb 2024

1 other edition date appears in one or two filings each, often carrier-specific versions: 12 09.

What the filings show

  • Edition in use: in the past 12 months, 42 companies filed the 10 13 edition and 3 companies filed 03 10.
  • The latest edition, 09 27, has been filed by Insurance Services Office, Inc in 16 states since Aug 20, 2026. No carrier filings list it yet.
  • CA 99 10 (Drive Other Car Coverage - Broadened Coverage for Named Individuals) is filed alongside it most often, in 208 of the same filings (88%).

Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings. One filing can cover several affiliated companies.

Carriers filing this form

The 10 carrier groups with the most filings that include CA 03 01, out of 52 in total.

CarrierFilingsStatesEditions, most filed firstLast filed
Berkshire Hathaway Group12 group companies filed it, led by National Liability and Fire Insurance Company and National Indemnity Company231610 1303 10Jun 16, 2026
Tokio Marine Holdings Incorporated Group2 group companies filed it, led by U.S. Specialty Insurance Company and Safety National Casualty Corporation181410 13Feb 17, 2026
Insurance Services Office, Inc.Advisory Organization171609 27Aug 26, 2026
Arch Insurance Group3 group companies filed it, led by Arch Indemnity Insurance Company and Arch Insurance Company14210 13Apr 8, 2026
Cincinnati Financial Group3 group companies filed it, led by The Cincinnati Casualty Company and The Cincinnati Indemnity Company141110 1303 06Jul 12, 2024
OLD Republic Group4 group companies filed it, led by BITCO General Insurance Corporation and BITCO National Insurance Company13110 13May 11, 2026
Scor GroupGeneral Security National Insurance Company10110 13Jun 9, 2026
Nationwide Corporation Group9 group companies filed it, led by Allied Insurance Company of America and Nationwide Mutual Insurance Company9310 13Apr 7, 2026
SH1 Holdings GroupSpinnaker Insurance Company9910 13Nov 10, 2022
Group 1001 Insurance Holdings GroupCLEAR SPRING PROPERTY AND CASUALTY COMPANY6210 13Mar 18, 2026

How the largest insurers handle CA 03 01

Groups among the largest commercial auto insurers that filed CA 03 01 or their own version in the past five years.

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States

Number of filings that include CA 03 01 in each state, Oct 2021 to Aug 2026. Darker states have more filings.

Tennessee: 1 filingTN1Alabama: 3 filingsAL3Florida: 0 filingsFLGeorgia: 0 filingsGAOklahoma: 2 filingsOK2South Carolina: 43 filingsSC43Arkansas: 1 filingAR1Missouri: 3 filingsMO3Indiana: 0 filingsINLouisiana: 2 filingsLA2Ohio: 1 filingOH1Wisconsin: 1 filingWI1Texas: 5 filingsTX5Kentucky: 2 filingsKY2Iowa: 0 filingsIAKansas: 2 filingsKS2Mississippi: 3 filingsMS3North Carolina: 1 filingNC1Nebraska: 3 filingsNE3South Dakota: 2 filingsSD2Montana: 1 filingMT1New Hampshire: 0 filingsNHVirginia: 0 filingsVAArizona: 2 filingsAZ2Pennsylvania: 2 filingsPA2Rhode Island: 4 filingsRI4Michigan: 2 filingsMI2Alaska: 0 filingsAKDistrict of Columbia: 1 filingDC1Idaho: 5 filingsID5Maryland: 1 filingMD1West Virginia: 1 filingWV1Utah: 3 filingsUT3Wyoming: 7 filingsWY7Delaware: 0 filingsDENew Mexico: 1 filingNM1Colorado: 115 filingsCO115Connecticut: 0 filingsCTMaine: 3 filingsME3North Dakota: 3 filingsND3Illinois: 3 filingsIL3Minnesota: 0 filingsMNNew Jersey: 0 filingsNJNew York: 0 filingsNYMassachusetts: 1 filingMA1Washington: 0 filingsWAOregon: 0 filingsORVermont: 3 filingsVT3California: 0 filingsCANevada: 4 filingsNV4Hawaii: 0 filingsHI
FewerMore filingsNone

Often filed with

Standard-style form numbers that appear in the same filings most often.

  • CA 99 10Drive Other Car Coverage - Broadened Coverage for Named Individuals208 filings
  • CA 99 44Loss Payable Clause206 filings
  • CA 20 48Designated Insured for Covered Autos Liability Coverage200 filings
  • CA 99 23Rental Reimbursement Coverage197 filings
  • CA 00 01Business Auto Coverage Form187 filings
  • CA 99 33Employees as Insureds187 filings
  • CA 99 30Tapes, Records and Discs Coverage185 filings
  • CA 20 27Registration Plates Not Issued for a Specific Auto183 filings
  • CA 99 47Employee as Lessor181 filings
  • CA 04 45Golf Carts and Low- Speed Vehicles178 filings

Recent filings

Latest filings that include this form number. Filed copies open in FilingFocus.

SubmittedCompanyStateEditionsTracking number
Aug 28, 2026Jet Insurance CompanySC10 13MRTN-134878222
Aug 26, 2026Insurance Services Office, Inc.LA09 27ISOF-135053020
Aug 26, 2026Insurance Services Office, Inc.TX09 27ISOF-135053045
Aug 26, 2026Insurance Services Office, Inc.TX09 27ISOF-135066694
Aug 25, 2026Insurance Services Office, Inc.OK09 27ISOF-135053037
Aug 21, 2026Insurance Services Office, Inc.AR09 27ISOF-135052987
Aug 21, 2026Insurance Services Office, Inc.MS09 27ISOF-135053025
Aug 21, 2026Insurance Services Office, Inc.ND09 27ISOF-135053035
Aug 21, 2026Insurance Services Office, Inc.VT09 27ISOF-135053047
Aug 20, 2026Insurance Services Office, Inc.AZ09 27ISOF-135052986
Aug 20, 2026Insurance Services Office, Inc.ID09 27ISOF-135052994
Aug 20, 2026Insurance Services Office, Inc.ME09 27ISOF-135053021

Most filed ISO CA forms

All Commercial Auto (ISO CA) forms

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