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ISO

The foundational data, forms, and analytics standard for the U.S. property and casualty insurance industry.

Data & Analytics Enterprise Acquired (Verisk Analytics, Nasdaq: VRSK, 2009)
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Overview

ISO (Insurance Services Office) is the foundational provider of standardized policy forms, rating information, loss costs, statistical data, and analytical tools for the U.S. property and casualty insurance market. Established in 1971 through the consolidation of state, regional, and national rating bureaus, ISO has spent over five decades building and maintaining the data infrastructure that underpins how hundreds of insurers develop products, price risks, and file with regulators.

Acquired by Verisk Analytics in 2009 and now operating as the core brand within Verisk's insurance segment, ISO maintains one of the largest private databases in the world -- with more than 34 billion statistical records spanning 31 commercial and personal lines of P&C insurance. The organization collects approximately 2 billion new records annually and processes 17,000 statistical submissions per year from participating insurers.

ISO's forms, rules, and loss costs serve as the industry baseline: ISO annually monitors more than 10,000 bills, 8,000+ regulatory actions, and 2,000+ court decisions to keep policy language current, and issues over 700 pricing circulars each year. For most U.S. P&C carriers, the ISO data ecosystem is a mission-critical operating dependency -- not a vendor relationship.

Products & Services

ISO Forms, Rules, and Loss Costs

The industry-standard suite of policy language, underwriting rules, and actuarial loss costs spanning 31 commercial and personal lines. Used by hundreds of insurers for product development, pricing, and regulatory filings for over 50 years.

Key Features

  • Continuously updated policy forms reflecting 10,000+ bills, 8,000+ regulatory actions, and 2,000+ court decisions monitored annually
  • 730+ policy forms revised or introduced annually
  • Loss costs based on 8.2 billion commercial lines records and 21.5 billion personal lines records
  • ISO submits forms and loss costs to state regulators on behalf of subscribing insurers
  • 700+ pricing circulars issued annually

Target Users: P&C carriers, MGAs, state insurance regulators

ClaimSearch

Industry-wide claims intelligence database for fraud detection and claims processing, containing over 1.8 billion U.S.-based claims from more than 2,800 contributing organizations -- representing approximately 95% of the U.S. P&C market.

Key Features

  • Cross-carrier claims matching to surface prior losses and detect fraud
  • Prior loss images for property claims
  • Mobile application for field adjusters
  • Partnership program with prebuilt integrations to leading claims platforms (including EIS Group ClaimCore)
  • Adopted by insurtechs including Hippo, Root, and Lemonade

Target Users: P&C carriers, TPAs, self-insureds, claims adjusters

ISO Risk Analyzer Suite

Predictive analytics platform providing granular, location-specific loss cost estimates and advisory pricing recommendations. Replaces or supplements proprietary actuarial models with ISO's deep data assets.

Key Features

  • Micro-segmentation by ZIP code and Census block group for refined pricing
  • By-peril analysis examining hundreds of risk variables
  • Available for Personal Auto, Homeowners, Commercial Auto, and Businessowners lines
  • Can be implemented standalone or integrated with existing pricing models
  • Component scoring provides variable category breakdowns for custom analysis

Target Users: P&C carriers seeking to enhance pricing discipline and reduce adverse selection

ISO Experience Index

Launched in July 2024, a first-of-its-kind benchmarking tool that provides actuaries with frequent, responsive insights into observed underwriting experience and changing risk patterns across the market.

Key Features

  • Quarterly releases with streamlined data adjustments -- more frequent than traditional loss cost reviews
  • Consistent methodology across states for uniform measurement
  • Multi-year view to illuminate longer-term patterns
  • Initial launch covers Homeowners by state; expanding to additional lines
  • Available to eligible Core Lines Services subscribers via existing Verisk delivery platforms

Target Users: P&C actuaries, pricing analysts

ISOnet

Online portal providing subscriber access to ISO forms, rules, loss costs, pricing circulars, and product updates. Includes tools such as ISO Passport, ISO Electronic Numerical Listings of Classification Codes, Mozart Form Composer, and the platform for Special Statistical Data Calls.

Target Users: P&C insurers, MGAs, regulators

FairCheck

A solution that helps insurers assess their pricing models for unfair discrimination against protected classes (e.g., race), supporting compliance with state-level unfair discrimination regulations.

Target Users: P&C carriers, pricing and compliance teams

Statistical and Actuarial Services

ISO collects, analyzes, and files statistical data on behalf of insurer members -- processing 17,000 submissions annually -- and provides regulatory filing support for state-mandated statistical reporting.

Target Users: P&C carriers, state insurance departments

At a Glance

Founded
1971
Headquarters
Jersey City, New Jersey, USA
Employees
1000+
Funding
Acquired (Verisk Analytics, Nasdaq: VRSK, 2009)

Category & Focus

Category
Data & Analytics
Subcategories
Statistical data and actuarial services policy forms and loss costs claims fraud intelligence predictive analytics
Insurance Verticals
P&C Personal P&C Commercial Specialty/E&S Workers Compensation Reinsurance
Target Customers
Carriers, MGAs/MGUs, Reinsurers, Regulators

Customers

  • Hippo (insurtech carrier)
  • Root Insurance (insurtech carrier)
  • Lemonade (insurtech carrier)
  • Hundreds of traditional P&C carriers (comprising approximately 95% of the U.S. P&C market via ClaimSearch)

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Last updated: 2026-06-03