2015 Study: How Credit Scores Impact Car Insurance Costs By State

by Alina Comoreanu

Car Insurance

Everyone knows that auto insurance is mandatory (except in New Hampshire). Furthermore, we know that our credit scores dictate the types of loans and credit cards for which we can garner approval. But when it comes to the connection between credit scores and car insurance, most of us are in the dark.

With that in mind, WalletHub set out to determine 1) how transparent insurance companies are in disclosing the use of credit data in underwriting decisions; 2) how transparent they are about the source of their credit data; and 3) the extent to which credit data impacts insurance policies across the 50 states and the District of Columbia.

In evaluating the importance of credit data to insurance underwriting, WalletHub obtained quotes from five of the largest auto insurance providers in the country for two hypothetical consumers who are identical save for the fact that one has excellent credit while the other has no credit. This allowed us to isolate for the role of credit in insurance policy pricing, but it is important to note that the exact credit-based pricing fluctuations discussed throughout the report may not hold true for all consumers given the multitude of other factors that contribute to the insurance policies each of us are extended. In other words, the fact that credit scores impact insurance premiums to a significant extent should be the main takeaway for consumers, rather than the exact amount of the impact.

Key Findings

  • Farmers Insurance appears to rely on credit data the most, with the WalletHub Scenario revealing a 62% fluctuation in premiums between a consumer with excellent credit and a consumer with no credit. GEICO, on the other hand, appears to rely on credit data the least, displaying a 32% premium fluctuation.
  • There is a 49% differential in the cost of car insurance premiums for a person with an excellent credit score and a person with no credit history, in the average state.
  • Credit data has the smallest impact on insurance premiums in Connecticut (15% fluctuation) and the biggest impact in the Michigan (115% fluctuation).
  • As was the case in 2014, Progressive is the most transparent insurer regarding the use of credit data in quote generation as well as the source of that credit data, scoring the maximum 10 points in this category. The least transparent insurer, Liberty Mutual – the lowest scoring provider – obtained a score of only 4.5.
  • Out of the five major insurance providers that WalletHub examined, Geico use credit data in the fewest states (30), while Allstate uses credit data in all but three states.

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States Where Credit Data is Most & Least Significant

*All numbers in the above chart are percentages.
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Average Premium Fluctuation by Company

*Averages reflect quotes for the WalletHub Scenario. States in which credit score is not used have been excluded.
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Insurance Provider Transparency Ratings

Company Transparency Score*

*For information about how transparency was evaluated, see the Methodology section of this report.
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In order to determine the impact of consumer credit data on car insurance premiums, we collected premium quotes from the websites of five of the largest insurance providers in the United States, based on the total number of insurance premiums issued, according to SNL Financial. In light of the fact that insurers use numerous variables in pricing their policies, we obtained quotes for two hypothetical consumers, identical save only for their credit history. More specifically, one consumer has excellent credit while the other has no credit history.

Our base case, also referred to as the “WalletHub Scenario” in this report, assumes the following details about the driver and the automobile:

Base Case – Experienced Male Driver

male figure

2008 Honda Accord
2009 Honda Accord

Annual Mileage: 16,000
Licensed: 21 Years / Age: 37 Years
Marital Status and Gender: Single Male Employment Status/ Profession: Job that is not eligible for discounts
Commute: 20 miles each way
Days per week: 5 Days
Vehicle: 2009 Honda Accord LX, 4 cyl., Sedan
Assume driver side air bag, standard performance, no anti-theft device.
Bodily Injury Liability coverage of $50,000/$100,000
Property Damage Liability of $50,000
Minimum Personal Injury Protection or MedPay coverage in states where required
Uninsured Motorist Coverage of $50,000 (where available)
Underinsured Motorist Coverage of $50,000 (where available)
Collision with deductible of $1,000
Comprehensive with deductible of $1,000

The insurance coverage details were used as guidelines, as different states have different requirements. Where we were unable to match the coverage details to the above specifications, we chose the value closest to our base case data, or the cheapest option for the coverage limits that were available. State specific and other miscellaneous taxes have been included in the quote as needed.

In order to receive a quote from the insurance provider websites, a specific zip code was required. For each state in which the company was active, we chose zip codes where the average household income was closest to the average income for the state as a whole.

Once we received the quote with the total amount of the premium, we divided the amount by the number of months the premium was for in order to get an equal monthly payment and a fair comparison point.

Insurance Provider Credit Use Transparency
We also evaluated the top 10 insurance companies in the in order to determine how transparent each company is about the use of consumer credit information in their pricing policies. We reviewed each company’s website based on the following criteria:

A. How easy is it for a consumer to find out if the insurance provider is accessing their credit information and using it to provide pricing information? This question is worth 5 points total, and we scored it based on 2 dimensions: location of information and how prominent it is. If the information could not be located, no points were given.

Based on location:
1 point - If information is found on the first page of the quoting process.
0.5 points - If information is found on a subsequent page of the quoting process.

Based on how prominent the information is:
4 points - Prominent and normal size font.
3 points - Prominent and small size font.
2 points - Prominent accompanied by a pop-up.
1 point - Not prominent.

B. How easy is it for a consumer to determine which credit reporting agency credit data is being requested from? This question is worth 5 points total.

5 points - Information can be found on site and is a part of the quoting process.
4 points - Information can be found on the site, but needs to be searched for outside of the quoting process.
2 points - Information can be obtained through customer service lines.
1 point - Information is provided by the Public Relations department.
0 points - Information is not present on the website, cannot be obtained through customer lines or from the Public Relations department.

We sent the transparency scores to the included insurance companies so that they may verify the data and provide comments or corrections. There were no changes reported compared to last year.

USAA and State Farm said they will take our findings into consideration as they review opportunities to update their website.


Alina is a Research Analyst at Evolution Finance. She is a Business Administration graduate. Previously she worked as a desktop publisher for a daily newspaper and for the National Census&Statistical…
242 Wallet Points


By: Derby
Sep 11, 2015
I suppose I began this conversation because I, too, believe credit scores ought to be used only for perhaps bank-related transactions--if at all. One of the huge problems with credit scores is that they make no allowance for victims of financial crimes. In my case, a thief defaulted and got away with stealing $1.8 million from me, thus ruining my financial standing and credit score. Over a period of 40 years I had never failed read more
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By: Derby
Jun 3, 2014
I cannot understand the rational used to justify the use of credit scores for determining the rate paid for car insurance. Many people with bad credit scores are victims through no fault of their own, yet the Credit Bureaus have no way to add that to their faulty scoring system. I, for instance, lost my business when I agreed to sell it--only I was taken in by professional thieves and bad lawyering. The result was read more
By: Jayjay75
Jul 1, 2014
You are more likely to turn in a claim if you have poor credit. Plain and simple.

You can have your existing company re run your credit in most states or change companies when your credit gets better.
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By: Billw1
Sep 10, 2015
@Jayjay75: So, if it can be shown that the lower the credit score, the more likely someone is to shoplift, then it's appropriate that my Kroger card add 40% to my grocery bill when I check out?
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By: Jayjay75
Sep 10, 2015
@Billw1: That is a pretty ridiculous comparison but I will indulge you.

Insurance is the transfer of risk from one entity to the other (in this case your risk to your insurance company). The company gives you a rate for this service based on many things, your credit being one of them. This is very similar to a lender evaluating your ability to pay back a loan on many different bits of info, your credit read more
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