ISO endorsement ยท commercial auto

CA 26 05 Single Interest Deductibles

Filings
134
latest Aug 27, 2026
Filing companies
72
42 carrier groups
States
11
Latest edition
04 80
Apr 1980

Coverage description

An Insurance Services Office (ISO) standard form. It applies the deductible checked in its schedule ($100 or $250) to comprehensive, collision, or fire and theft coverage on the autos it applies to, so each loss is paid only above that deductible.

Editions

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

EditionFilingsCompaniesStatesFiled
04 80Apr 1980Latest1327011Nov 2021 to Aug 2026

1 other edition date appears in one or two filings each, often carrier-specific versions: 04 08.

What the filings show

  • Edition in use: in the past 12 months, 26 companies filed the 04 80 edition.
  • CA 99 27 (Split Liability Limits) is filed alongside it most often, in 130 of the same filings (97%).

Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Aug 2026, excluding withdrawn and rejected filings.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 26 05, out of 42 in total.

CarrierFilingsStatesEditions, most filed firstLast filed
Arch Insurance Group3 group companies filed it, led by Arch Indemnity Insurance Company and Arch Insurance Company12104 80Apr 8, 2026
Scor GroupGeneral Security National Insurance Company10104 80Jun 9, 2026
OLD Republic Group2 group companies filed it, led by Old Republic General Insurance Corporation and Old Republic Insurance Company8104 80Jun 30, 2025
Markel Corporation Group3 group companies filed it, led by State National Insurance Company, Inc. and Markel Insurance Company7404 80Jun 24, 2024
Tokio Marine Holdings Incorporated Group2 group companies filed it, led by Safety National Casualty Corporation and Philadelphia Indemnity Insurance Company7304 80Aug 27, 2026
Clear Blue Financial Group2 group companies filed it, led by Clear Blue Insurance Company and Rock Ridge Insurance Company6304 80Oct 29, 2025
Alliance Insurance GroupFarmers Alliance Mutual Insurance Company5104 80May 19, 2026
Ambac Financial GroupEverspan Insurance Company5404 80Apr 28, 2025
Group 1001 Insurance Holdings GroupCLEAR SPRING PROPERTY AND CASUALTY COMPANY5204 80Mar 18, 2026
Liberty Mutual GroupState Automobile Mutual Insurance Company5104 80Jun 17, 2026

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States

Number of filings that include CA 26 05 in each state, Oct 2021 to Aug 2026. Darker states have more filings.

Tennessee: 0 filingsTNAlabama: 0 filingsALFlorida: 0 filingsFLGeorgia: 0 filingsGAOklahoma: 1 filingOK1South Carolina: 23 filingsSC23Arkansas: 0 filingsARMissouri: 0 filingsMOIndiana: 0 filingsINLouisiana: 0 filingsLAOhio: 0 filingsOHWisconsin: 1 filingWI1Texas: 0 filingsTXKentucky: 1 filingKY1Iowa: 0 filingsIAKansas: 0 filingsKSMississippi: 0 filingsMSNorth Carolina: 0 filingsNCNebraska: 0 filingsNESouth Dakota: 0 filingsSDMontana: 0 filingsMTNew Hampshire: 0 filingsNHVirginia: 0 filingsVAArizona: 0 filingsAZPennsylvania: 0 filingsPARhode Island: 0 filingsRIMichigan: 0 filingsMIAlaska: 0 filingsAKDistrict of Columbia: 0 filingsDCIdaho: 0 filingsIDMaryland: 1 filingMD1West Virginia: 0 filingsWVUtah: 0 filingsUTWyoming: 3 filingsWY3Delaware: 0 filingsDENew Mexico: 2 filingsNM2Colorado: 83 filingsCO83Connecticut: 0 filingsCTMaine: 0 filingsMENorth Dakota: 0 filingsNDIllinois: 3 filingsIL3Minnesota: 0 filingsMNNew Jersey: 0 filingsNJNew York: 0 filingsNYMassachusetts: 0 filingsMAWashington: 0 filingsWAOregon: 1 filingOR1Vermont: 0 filingsVTCalifornia: 15 filingsCA15Nevada: 0 filingsNVHawaii: 0 filingsHI
FewerMore filingsNone

Often filed with

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

  • CA 99 27Split Liability Limits130 filings
  • CA 99 15Governmental Bodies Amendatory Endorsement126 filings
  • CA 02 38Reinstatement of Insurance125 filings
  • CA 20 27Registration Plates Not Issued for a Specific Auto125 filings
  • CA 23 97Amphibious Vehicles125 filings
  • CA 99 16Hired Autos Specified as Covered Autos You Own125 filings
  • CA 99 23Rental Reimbursement Coverage125 filings
  • CA 99 44Loss Payable Clause125 filings
  • CA 99 47Employee as Lessor125 filings
  • CA 02 40Suspension of Insurance124 filings

Recent filings

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

SubmittedCompanyStateEditionsTracking number
Aug 27, 2026Philadelphia Indemnity Insurance CompanyNM04 80PHLX-135063316
Jun 25, 2026Selective Insurance Company of Americaand 3 moreCO04 80SELC-134998854
Jun 24, 2026Great American Alliance Insurance Companyand 3 moreCO04 80GACX-134993563
Jun 19, 2026Addison Insurance Companyand 1 moreCO04 80UNFG-134905846
Jun 18, 2026Sompo America Fire and Marine Insurance Companyand 1 moreCO04 80SMPJ-134972831
Jun 17, 2026State Automobile Mutual Insurance CompanyCO04 80STAT-134983865
Jun 9, 2026General Security National Insurance CompanyCO04 80PERR-134978283
Jun 9, 2026General Security National Insurance CompanyCO04 80PERR-134978297
Jun 5, 2026Incline Casualty CompanySC04 80MRTN-134969595
May 21, 2026Jet Insurance CompanyNM04 08MRTN-134878221
May 19, 2026Farmers Alliance Mutual Insurance CompanyCO04 80FAMI-134934257
Apr 30, 2026Trisura Insurance CompanyCA04 80SHNF-134890981

Most filed ISO CA forms

All Commercial Auto (ISO CA) forms

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