In 43 states, auto insurers use a specialized credit-based insurance score to help set your premium. It's not your FICO score — it's a different model. Here's how it works, which states ban it, and what to do about it.
In 43 U.S. states, auto insurers use a credit-based insurance score — a separate model from your FICO score — to help set your premium. Approximately 95% of auto insurers use it where permitted. Eight states ban the practice: CA, HI, MD, MA, MI, NV, OR, and UT. If credit is used against you, federal and most state laws require an adverse action notice. Improving your credit over time can lower your premium; shopping at renewal captures differences between insurer scoring models.
In 43 U.S. states, one of the biggest variables in your auto insurance premium isn't your driving record — it's your credit history. Insurers in these states use a specialized model called a credit-based insurance score to predict the likelihood you'll file a claim, and the results can meaningfully shift what you pay each month.
If that surprises you, you're not alone. Most drivers are aware their driving record affects their rate. Fewer know their credit history does too — and in a different way than most people expect.
A credit-based insurance score is not the same as your standard FICO credit score, even though both draw from the same underlying credit bureau data. The NAIC (National Association of Insurance Commissioners) explains that both models evaluate factors like payment history, amounts owed, length of credit history, new credit inquiries, and credit mix — but they weight those factors differently because they're solving different problems.
Your FICO 8 score is designed to predict whether you'll default on a loan. An insurance credit score is calibrated to predict whether you'll file an insurance claim. These are related but meaningfully different behaviors. myFICO notes that FICO produces dedicated insurance-specific scoring models used by insurers — distinct from the FICO versions lenders pull when you apply for a mortgage or car loan.
The practical implication: the same credit file that produces a 720 FICO 8 score may produce a different number under an insurance scoring model. Drivers sometimes assume their credit score is "good enough" without realizing the insurance model weighted certain factors differently.
According to data presented at NAIC hearings by FICO, approximately 95% of auto insurers and 85% of homeowners insurers use credit-based insurance scores in states where the practice is permitted. This makes it one of the most widely used non-driving rating factors in personal auto insurance.
The academic and regulatory basis for this: a 2007 report to Congress by the Federal Trade Commission studied whether credit-based insurance scores actually predict claims. The FTC found that they do — drivers with lower credit-based insurance scores file more claims on average. The same study also documented significant score disparities across racial and ethnic groups, which has driven legislative efforts in multiple states.
As of 2026, eight states prohibit or significantly restrict the use of credit information in setting auto insurance rates:
California, Hawaii, Maryland, Massachusetts, Michigan, Nevada, Oregon, and Utah.
In these states, your auto insurance premium is determined by traditional rating factors: your driving record (violations, at-fault accidents, claims history), years of licensed driving experience, the vehicle you insure, annual mileage, and where the vehicle is garaged. Credit is off the table.
This matters when you relocate. A driver moving from California to a state where credit scoring is permitted may see premium changes unrelated to their driving record — purely because the new state's insurers now incorporate their credit profile. Conversely, a driver with poor credit moving to one of the eight ban states may see relief at renewal.
The exact premium impact varies by insurer, state, and the other rating factors in your file. Neither the NAIC nor the FTC publishes a single national average premium differential, because each insurer files its own credit scoring model with state regulators and the weights differ.
What the FTC's research confirms: credit is among the most heavily weighted non-driving factors in personal auto underwriting where it's used. A driver with a strong credit profile will generally pay less than an equivalent driver — same car, same driving record, same ZIP code — with poor credit. The gap is real; the specific dollar amount depends on the insurer's model.
Clean up your credit file first. The underlying data is the same as what feeds your FICO score — so errors on your credit report hurt your insurance rate the same way they hurt your borrowing costs. Pull your free reports at AnnualCreditReport.com and dispute any inaccuracies before your next renewal. A single wrongly reported late payment can depress both scores. See How to Read Your Credit Report and Dispute Errors for the step-by-step process.
Improve the underlying credit behaviors that move both scores. On-time payments, lower credit card utilization, and avoiding new hard inquiries in the months before renewal all improve credit-based insurance scores alongside standard FICO scores. These aren't separate problems to solve — the same credit hygiene habits move both numbers.
Shop around at renewal — seriously. Different insurers use different credit-based insurance scoring models. The same credit file can produce materially different scores with different models, and quotes from competing insurers at renewal often reflect those differences. Getting two or three quotes when your credit has improved is one of the highest-return actions available to a driver in a scoring-permitted state.
Request re-evaluation after improvement. Many states require insurers to re-evaluate your premium at your request if your credit has improved since the original policy was issued. Some states mandate this automatically at renewal. If your credit has improved meaningfully since you first got your policy, contact your insurer and ask for a re-rate.
Know your adverse action rights. Under most state insurance laws and the federal Fair Credit Reporting Act, if credit information negatively affected your premium, coverage terms, or policy decision, the insurer must notify you — an adverse action notice. If your premium increases significantly and you don't receive an explanation, ask in writing whether credit played a role.
For drivers who are also small business owners: the same credit profile that affects your auto insurance rate also affects your access to business financing. See How Your Credit Score Affects Small Business Funding for the lending-side implications of the same underlying credit file.
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*Related: Best Auto Insurance Companies 2026 | How to Read Your Credit Report and Dispute Errors | Fix Your Credit Fast: What Small Business Owners Need to Know*
No. According to the NAIC consumer guide on credit-based insurance scores, both models pull from the same credit bureau data — payment history, utilization, length of credit history, new inquiries, and credit mix — but they weight those factors differently. Your FICO score is optimized to predict loan default. A credit-based insurance score is calibrated to predict claim filing frequency. The same credit file can produce meaningfully different numbers under each model. myFICO notes that FICO produces a dedicated insurance-specific score version used by insurers, separate from FICO 8 or FICO 9.
In most states that allow credit-based insurance scoring, the answer is no. The NAIC model regulation adopted by most states prohibits insurers from using credit as the sole reason to deny coverage, cancel a policy, or refuse renewal. Credit can be one rating factor among many — not the only one. Eight states go further and ban the practice outright: California, Hawaii, Maryland, Massachusetts, Michigan, Nevada, Oregon, and Utah. If you live in one of those states, your insurer cannot use your credit information when pricing your policy.
If credit information negatively affected your premium, most state laws require the insurer to provide an adverse action notice — a written statement identifying that credit was used and which factors contributed to the unfavorable outcome. This is similar to the adverse action notices lenders provide under the Fair Credit Reporting Act. If your premium increased at renewal and you didn't receive an explanation, contact your insurer in writing and ask whether credit information played a role. Keep the response.
In states where credit-based insurance scoring is permitted, yes — though the timeline and magnitude depend on the insurer's model and state rules. Many states require insurers to re-evaluate your premium at your request if your credit profile has improved since the original policy was issued. Some states mandate that insurers automatically check credit at renewal. Because different insurers use different models, re-shopping quotes after a significant credit improvement often surfaces a lower rate with a competitor even if your current insurer's model hasn't updated. For credit improvement strategies, see How to Read Your Credit Report and Dispute Errors — correcting errors is the fastest lever.
Yes, in most states. The NAIC model regulation, which most states have adopted in some form, requires insurers to provide exceptions for consumers whose credit dropped due to a qualifying life event: divorce, death of a spouse or child, a catastrophic medical event, temporary loss of employment, or an identity theft incident. Ask your insurer in writing to apply an extraordinary life circumstances exception. Not all states require this provision, and the definition of qualifying events varies — but if your credit dip was triggered by something beyond your control, it's worth asking.