How Your Credit Score Affects Your Insurance Rates

Tojocu Editorial Team | Last verified: April 2026

In the majority of the United States, an individual's financial history serves as a primary variable in the calculation of their auto and homeowners insurance premiums. Insurance carriers utilize a specific metric known as a credit-based insurance score to predict the statistical likelihood of an applicant filing a future claim. This practice remains a subject of intense debate between industry actuaries and consumer advocacy groups. Specific requirements, rates, and availability vary by state and insurer.

Defining the Credit-Based Insurance Score

A credit-based insurance score (CBIS) is not identical to a standard FICO credit score, though both are derived from the same underlying consumer financial reports maintained by major bureaus such as Equifax, Experian, and TransUnion [1].

A standard FICO score is engineered specifically for banking institutions to predict the likelihood that an individual will default on a loan or fail to make a credit card payment. An insurance score utilizes similar data, including payment history, outstanding debt ratios, the length of credit history, and recent applications for new credit, but processes that data through a different algorithmic model [2]. The insurance score model is engineered exclusively to predict the frequency and severity of future insurance claims. Crucially, neither standard credit scores nor insurance scores factor in income, employment history, gender, race, or geographic location.

The Actuarial Correlation

The insurance industry's reliance on credit scoring is rooted in extensive statistical analysis. Multiple independent actuarial studies, including a landmark report by the Federal Trade Commission (FTC), have demonstrated a highly reliable statistical correlation between credit history and insurance risk [3].

The data indicates that individuals demonstrating responsible financial management, evidenced by consistent, on-time payments and low debt utilization, are mathematically less likely to file auto collision or homeowners property claims. Conversely, individuals with poor credit histories file claims more frequently, and those claims tend to involve higher monetary payouts [1]. Insurance carriers argue that utilizing this data allows them to price risk accurately, resulting in lower baseline premiums for the majority of consumers who maintain strong credit profiles.

Application in the Underwriting Process

Insurance carriers do not utilize the credit-based insurance score in isolation; it is integrated into a broader algorithm alongside other risk factors, such as driving history, age, and geographic location.

The score determines which rating tier the applicant qualifies for. An applicant with a pristine insurance score is placed in a "preferred" tier, receiving the carrier's lowest possible base rates. An applicant with a poor insurance score is placed in a "non-standard" tier and is assessed a severe premium surcharge. Depending on the carrier's proprietary formula, a poor credit-based insurance score can sometimes increase an auto insurance premium more drastically than a recent at-fault collision or a speeding citation [2].

Legislative Restrictions and Consumer Advocacy

The practice of utilizing credit data for insurance pricing faces significant opposition from consumer advocacy organizations. These groups argue that the correlation between credit and driving ability is fundamentally flawed, asserting that credit scores are heavily impacted by unpredictable life events such as unexpected medical emergencies, job loss, or divorce, none of which inherently make an individual a more hazardous driver [3]. Furthermore, advocates argue that credit-based pricing disproportionately impacts low-income demographics and perpetuates systemic financial inequalities.

In response to these concerns, several state legislatures have enacted laws prohibiting or severely restricting the use of credit data in insurance underwriting. States such as California, Hawaii, Massachusetts, and Michigan prohibit the use of credit-based insurance scores for determining auto insurance rates [1]. Other states, including Maryland, Oregon, and Utah, impose specific restrictions on how and when the data can be utilized, particularly regarding policy cancellations or renewals.

Checking and Improving Insurance Scores

Under the federal Fair Credit Reporting Act (FCRA), consumers possess specific rights regarding their data. If an insurance carrier takes an "adverse action" against an applicant, such as denying coverage or offering a higher premium specifically because of their credit-based insurance score, the carrier is legally required to notify the consumer and provide the name of the credit bureau that supplied the report [2].

Improving a credit-based insurance score involves identical strategies to improving a standard FICO score. Establishing a long history of on-time payments is the most heavily weighted factor. Consumers are advised to pay down outstanding revolving debt, particularly credit card balances, to lower their credit utilization ratio. Finally, avoiding applying for multiple new lines of credit within a short timeframe prevents "hard inquiries" from temporarily depressing the score [3].