Legal & Regulatory

Complaint Ratio

A complaint ratio normalizes the complaints a state insurance department receives about an insurer by the insurer's size, so carriers of different scale can be compared. It is related to, but not the same as, the NAIC complaint index.

Last reviewed: October 2026 · Editorial methodology

Definition

A complaint ratio expresses the complaints a state insurance department received about an insurer relative to the insurer's size. Colorado's Division of Insurance, for example, publishes a Complaint Ratio showing complaints per $1 million of premium, so a large insurer and a small one can be compared on the same footing. It is a different statistic from the NAIC complaint index, which compares an insurer's share of complaints with its share of the market (1.00 means the two shares are equal). Methods differ by state and by line of business, so compare insurers using the same report. The NAIC compiles closed, confirmed complaints reported by state insurance departments; you can look up a company's complaint records on the NAIC Consumer Insurance Search (CIS), and many state insurance departments publish their own complaint reports.

Where this term matters

NAIC complaint index by company →How to file a state insurance complaint →Insurance Companies →Claims Help Center →

Tip

Glossary definitions are educational. Always check your own policy language — insurers can define common terms differently from one another. When in doubt, request a written explanation from your agent.

Related terms

NAIC Complaint IndexThe complaint index compares a company's share of complaints with its share of the business written. An index of 1.00 means the two shares are equal; below 1.00 means fewer complaints than the company's size would suggest, and above 1.00 means more.NAICThe National Association of Insurance Commissioners — sets model laws and publishes complaint data.State Insurance CommissionerThe state insurance commissioner (or superintendent/director of insurance) is responsible for licensing insurers and agents, approving rates and policy forms, handling consumer complaints, and enforcing insurance laws within their state.Market Conduct ExaminationMarket conduct examinations are audits conducted by state insurance departments to assess whether insurers are treating policyholders fairly and complying with consumer protection laws.
Source: Cover Forge USA editorial team|Last verified: May 2026|Methodology
Definitions are educational and may be simplified. Always refer to your policy contract and consult a licensed agent for terms that affect coverage decisions.
CF

Cover Forge USA Editorial Team

Editorial Lead

This article was researched and written by the Cover Forge USA editorial team against federal sources (NAIC, CMS, FEMA, DOL, SSA, state DOIs) and standard policy forms. Bylines organize content by topic — they do not assert individual licensure. See our editorial-policy for details.

Reviewed June 2026

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