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Insurance Company Ratings: How to Evaluate an Insurer (2026)

Understand the key metrics behind insurance company ratings and how they affect your claims. Make informed decisions for better coverage.

By FreeCalculators Editorial · Published 2026-09-01 · Updated 2026-09-04 · 5 min read · 1070 words

An insurance company rating measures one of two very different things, and confusing them is the common mistake. Financial strength ratings from agencies such as AM Best measure the ability to pay claims at all, on a letter scale running from A++ down through B and C to D. Complaint and satisfaction data measure willingness to pay them without a fight. A carrier can score well on one and poorly on the other.

Financial Strength Against Service Quality

Financial strength is an assessment of reserves, reinsurance and underwriting discipline. It answers whether the carrier can still pay after a catastrophe season that hits its entire book at once, which is why it matters most for property coverage in catastrophe-exposed states and for long-duration contracts such as life insurance and annuities.

Service quality is measured somewhere else entirely: complaint counts filed with state regulators, and claim satisfaction surveys of policyholders who have actually been through the process. For a two-year auto policy, service quality is usually the more useful signal, because the chance of insolvency within two years at a well-rated carrier is small.

What each rating source actually measures. A financial strength letter and a complaint index answer different questions, so both are worth checking before buying.
SourceWhat it measuresScale or unitBest used for
AM Best financial strength Ability to pay claims A++ down to D, plus E and F Property in catastrophe states, life, annuities
Other financial strength agencies The same question, different method Agency-specific letter scales Cross-checking a borderline rating
NAIC complaint index Complaints relative to market share 1.00 equals the market average Spotting an outlier carrier
State insurance department records Complaints and enforcement actions Counts and case files Checking a carrier in your own state
Claim satisfaction surveys Policyholder experience after a claim Ranked scores by line of business Comparing service on identical coverage
State guaranty association The backstop if a carrier fails Limits set by state law Understanding the downside of a weak rating

Reading the Complaint Index

The complaint index published through the National Association of Insurance Commissioners normalises complaints against premium volume, so 1.00 means a carrier attracts exactly the number of complaints its market share would predict. Persistently above 2.00 across several years is the signal worth acting on. A single bad year on a small book of business means very little.

State insurance department records are the more specific source, because insurance is regulated state by state. Coverage forms, rate filings and claim practices all vary, so a carrier with a clean national profile can still be the wrong choice where you live. Departments publish complaint data and enforcement actions for precisely this purpose.

Vetting a Carrier in Twenty Minutes

  1. Check the financial strength rating and confirm it sits in the A range for property, life or annuity coverage.
  2. Look up the complaint index and treat anything persistently above 2.00 as a reason to keep shopping.
  3. Search the state insurance department record for enforcement actions against that carrier.
  4. Read the claim satisfaction ranking for the specific line you are buying rather than the company overall.
  5. Ask the agent how claims are handled: in-house adjusters, a third-party administrator, or a general call centre.
  6. Confirm the guaranty association limits in your state, since that is the backstop if the carrier fails.

Two quotes that look identical on price (2026)

                Carrier A premium                   1,410
Carrier A financial strength        A range
Carrier A complaint index           0.8
Carrier B premium                   1,340
Carrier B financial strength        B range
Carrier B complaint index           2.6
Price difference                    70 / yr
Verdict: 70 does not buy a 2.6 complaint index

What Ratings Cannot Tell You

No rating captures the policy language, and the language is what pays. Two carriers in the A range can differ on loss settlement basis, on whether wind and hail carry a separate percentage deductible, and on whether ordinance and law coverage is included at all. Compare the forms first, then use ratings to break the tie.

Ratings also lag. They are reviewed periodically rather than continuously, so a downgrade tends to follow deterioration rather than predict it. That is one more reason to recheck both the letter and the complaint index at every renewal instead of once at purchase and never again. Health coverage has a parallel worth knowing: Medicare publishes star ratings for Advantage and drug plans that blend clinical quality with member experience, which is the closest equivalent to a service rating on that side of the market.

Frequently asked questions

What is a good AM Best rating for an insurance company?
Anything in the A range signals a strong ability to pay claims, while B++ and B+ are generally read as adequate rather than strong. For property coverage in a hurricane or wildfire state, and for life insurance where the contract runs for decades, staying in the A range is the practical rule.
Where can I check complaints against an insurance company?
Two places. The complaint index published through the National Association of Insurance Commissioners normalises complaints against market share. Your own state insurance department publishes complaints and enforcement actions for carriers licensed there, and because insurance is regulated by state, that record is the more relevant of the two.
Does a high rating mean my claim will be paid quickly?
No. Financial strength measures capacity to pay, not willingness or speed. A carrier can sit in the A range and still rank near the bottom for claim satisfaction. Check the complaint index and the satisfaction score for the specific line you are buying alongside the letter rating.
What happens if my insurance company goes out of business?
A state guaranty association takes over covered claims up to limits set by state law, which differ by policy type and are lower than many policy limits. Coverage continues through a transition period. The backstop exists, but it is capped, which is exactly why financial strength still matters.

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