ISO Form (Insurance Services Office)
Definition. ISO Forms are standardized commercial insurance policy forms drafted by the Insurance Services Office and used (with state-approved modifications) by most US carriers.
Also known as: ISO Standard Form, ISO CGL
The ISO CGL form (CG 00 01) is the basis for nearly every commercial GL policy sold in the US. Standardization makes quote comparison meaningful — carriers compete on price + endorsements rather than reinventing core policy language. Some specialty markets use manuscript (non-ISO) forms.
Sources cited
Need iso form (insurance services office) coverage?
Compare quotes from 10+ commercial insurance carriers in 5 minutes. Free, no contact info required.
Get My Quotes →Disclosures
📘 Educational content only.
Reviewed by California-licensed Property & Casualty insurance agent
Jason Wootton (CA License #0I94454). Not insurance advice, an individual recommendation, or a solicitation in any state. Insurance regulations vary by state. For specific coverage decisions, consult a licensed insurance agent in your state.
Advertiser disclosure.
Get Business Coverage is a licensed insurance referral service. We may receive
compensation when you click links to carrier partners or complete a quote. This
compensation may impact how and where products appear on this page, but it does
not influence our editorial content or research methodology.