Coverage description
An Insurance Services Office (ISO) standard form. It treats the vehicles listed in its schedule as covered autos rather than mobile equipment, for only the coverages with a premium shown, and excludes liability from operating machinery or equipment attached to them.
How the form has changed
Recent editions update the schedule's deductible options and the coverage forms it applies to. The coverage wording is the same.
Editions
Edition dates as filed, newest first. Filing counts include every state submission that lists the edition.
| Edition | Filings | Companies | States | Filed |
|---|---|---|---|---|
| 11 20Nov 2020Latest | 201 | 128 | 32 | Nov 2021 to Sep 2026 |
| 10 13Oct 2013 | 114 | 56 | 33 | Nov 2021 to Jul 2026 |
| 12 04Dec 2004 | 12 | 13 | 8 | Jun 2022 to Mar 2026 |
Filed by one company only: 10 21 (6 filings).
2 other edition dates appear in one or two filings each, often carrier-specific versions: 10 01, 11/01/2020.
Where filings record what this form replaced, they name earlier editions 10 13, 12 04. Only some filings record replacements.
What the filings show
- Edition in use: in the past 12 months, 44 companies filed the 11 20 edition and 13 companies filed 10 13.
- The 10 21 edition appears only in filings from one company (6 filings in 6 states since Aug 23, 2022), which suggests a carrier-specific version.
- CA 00 01 (Business Auto Coverage Form) is filed alongside it most often, in 284 of the same filings (85%).
Filed under
Data from admitted P&C filings with state insurance departments, submitted Oct 2021 to Sep 2026, excluding withdrawn and rejected filings.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 20 15, out of 72 in total.
| Carrier | Filings | States | Editions, most filed first | Last filed |
|---|---|---|---|---|
| Cincinnati Financial Group3 group companies filed it, led by The Cincinnati Casualty Company and The Cincinnati Insurance Company | 48 | 34 | 11 2010 1312 04 | Sep 21, 2026 |
| Nationwide Corporation Group13 group companies filed it, led by Allied Insurance Company of America and Nationwide Mutual Insurance Company | 28 | 7 | 11 2010 13 | Apr 7, 2026 |
| Berkshire Hathaway Group14 group companies filed it, led by National Liability and Fire Insurance Company and National Indemnity Company | 26 | 22 | 10 1311 2012 04 | Jan 21, 2026 |
| Tokio Marine Holdings Incorporated Group3 group companies filed it, led by U.S. Specialty Insurance Company and Safety National Casualty Corporation | 21 | 17 | 10 1311 20 | Aug 27, 2026 |
| Arch Insurance Group3 group companies filed it, led by Arch Insurance Company and Arch Indemnity Insurance Company | 13 | 2 | 11 20 | Apr 8, 2026 |
| OLD Republic Group4 group companies filed it, led by BITCO General Insurance Corporation and BITCO National Insurance Company | 13 | 1 | 11 20 | May 11, 2026 |
| Liberty Mutual Group8 group companies filed it, led by State Automobile Mutual Insurance Company and Employers Insurance Company of Wausau | 12 | 2 | 10 1311 20 | Jun 17, 2026 |
| Scor GroupGeneral Security National Insurance Company | 10 | 1 | 11 20 | Jun 9, 2026 |
| Clear Blue Financial Group2 group companies filed it, led by Clear Blue Insurance Company and Rock Ridge Insurance Company | 9 | 2 | 11 20 | Oct 29, 2025 |
| Markel Corporation Group3 group companies filed it, led by State National Insurance Company, Inc. and Markel Insurance Company | 8 | 4 | 11 2010 13 | Jun 24, 2024 |
How the largest insurers handle CA 20 15
Groups among the largest commercial auto insurers that filed CA 20 15 or their own version in the past five years.
- Travelers GroupUses CA 20 15 in 63 filings
- Berkshire Hathaway GroupUses CA 20 15 in 22 filings
- Liberty Mutual GroupUses CA 20 15 in 2 filings
See more forms
Search related forms, compare editions, and research carrier filings with FilingFocus.
States
Number of filings that include CA 20 15 in each state, Oct 2021 to Sep 2026. Darker states have more filings.
Often filed with
Standard-style form numbers that appear in the same filings most often.
- CA 00 01Business Auto Coverage Form284 filings
- CA 20 01Lessor - Additional Insured and Loss Payee264 filings
- CA 20 54Employee Hired Autos256 filings
- CA 99 28Stated Amount Insurance247 filings
- CA 99 33Employees as Insureds243 filings
- CA 20 71Auto Loan/Lease Gap Coverage241 filings
- CA 99 44Loss Payable Clause228 filings
- CA 20 48Designated Insured for Covered Autos Liability Coverage225 filings
- CA 99 14Fire, Fire and Theft, Fire, Theft and Windstorm and Limited Specified Causes of Loss Coverages222 filings
- CA 20 27Registration Plates Not Issued for a Specific Auto216 filings
Recent filings
Latest filings that include this form number. Filed copies open in FilingFocus.
| Submitted | Company | State | Editions | Tracking number |
|---|---|---|---|---|
| Sep 21, 2026 | The Cincinnati Casualty Companyand 2 more | NV | 11 20 | CNNA-135046178 |
| Sep 10, 2026 | SECURA Insurance, A Mutual Companyand 1 more | IL | 11 20 | SEIC-135044227 |
| Aug 28, 2026 | Jet Insurance Company | SC | 11 20 | MRTN-134878222 |
| Aug 27, 2026 | Philadelphia Indemnity Insurance Company | NM | 11 20 | PHLX-135063316 |
| Jul 8, 2026 | The Cincinnati Casualty Companyand 2 more | SD | 11 20 | CNNA-134986113 |
| Jul 8, 2026 | Colorado Farm Bureau Insurance Company | CO | 10 13 | SFBC-135011078 |
| Jul 2, 2026 | The Cincinnati Casualty Companyand 2 more | WY | 11 20 | CNNA-134975302 |
| Jun 30, 2026 | Accredited Surety and Casualty Company, Inc. | CO | 11 20 | ACSA-135005169 |
| Jun 26, 2026 | Grange Insurance Association | CO | 10 13 | GRIA-135000193 |
| Jun 25, 2026 | Selective Insurance Company of Americaand 3 more | CO | 11 20 | SELC-134998854 |
| Jun 24, 2026 | Great American Alliance Insurance Companyand 3 more | CO | 11 20 | GACX-134993563 |
| Jun 19, 2026 | Addison Insurance Companyand 1 more | CO | 11 20 | UNFG-134905846 |
Most filed ISO CA forms
- CA DS 03 Business Auto Declarations
- CA DS 21 Motor Carrier Declarations
- CA 00 01 Business Auto Coverage Form
- CA 28 03 Abuse Or Molestation Exclusion For Covered Autos Liability Exposure
- CA 23 17 Truckers - Uniform Intermodal Interchange Endorsement Form UIIE - 1
- CA 04 43 Waiver Of Transfer Of Rights Of Recovery Against Others To Us (Waiver Of Subrogation) - Automatic When Required By Written Contract Or Agreement
- CA 04 44 Waiver Of Transfer Of Rights Of Recovery Against Others To Us (Waiver Of Subrogation)
- CA 04 49 Primary and Noncontributory - Other Insurance Condition
- CA 20 01 Lessor - Additional Insured And Loss Payee
- CA 20 48 Designated Insured For Covered Autos Liability Coverage
- CA 00 20 Motor Carrier Coverage Form
- CA 20 71 Auto Loan/Lease Gap Coverage
See more carrier forms
Search forms by carrier, line of business, state, and wording with FilingFocus.