Does a Bad Credit Score Affect Car Insurance? (What the Data Shows)

In most U.S. states, a bad credit score can directly increase car insurance premiums. Insurers in the majority of states use what is known as a credit-based insurance score — a specialized scoring model derived from your credit history — to help set your premium. According to the Federal Trade Commission (FTC), credit-based insurance scores are statistically correlated with the likelihood of filing a claim, which is why insurers consider them a valid underwriting factor.

This means two drivers with identical driving records, vehicles, and coverage levels may pay substantially different premiums if one has a lower credit score. The effect is not trivial: consumers with lower credit-based insurance scores consistently face higher premiums than those with strong credit profiles, sometimes by a significant margin.

It is worth noting that the score insurers use is not your standard FICO score or VantageScore. Credit-based insurance scores are built on similar credit report data — payment history, outstanding debt, length of credit history, and new credit inquiries — but they are weighted differently and optimized to predict insurance risk rather than lending risk.

Credit-based insurance scores are generated by the same major data analytics companies that produce consumer credit scores, but the models are purpose-built for the insurance industry. The factors that influence your credit-based insurance score include:

• Payment history — Late payments, collections, and charge-offs lower the score
• Outstanding debt and credit utilization — High balances relative to credit limits signal elevated risk
• Length of credit history — A longer, stable credit history generally produces a higher score
• New credit applications — Multiple recent hard inquiries can reduce the score
• Credit mix — A diverse set of responsibly managed accounts (installment loans, revolving credit) can help

What Is Not Included

Under the Fair Credit Reporting Act (FCRA), insurers are prohibited from using certain data in their scoring models. Your income, employment status, marital status, race, religion, and national origin are excluded from credit-based insurance scores. The score draws exclusively from credit bureau data, not from demographic or financial-status information outside your credit file.

When an insurer uses your credit information and it results in a less favorable rate, they are required by the FCRA to send you an adverse action notice informing you that your credit was a factor in the pricing decision.

Not every state permits insurers to use credit information when setting auto insurance premiums. A few states have enacted outright bans or significant restrictions:

If you live in California, Hawaii, or Massachusetts, your credit score has no bearing on your auto insurance premium. In states with partial restrictions, credit may influence pricing but cannot be the only determining factor. The National Association of Insurance Commissioners (NAIC) maintains model legislation that many states reference when drafting their own credit-scoring rules for insurance.

For consumers in the remaining states, credit-based insurance scores remain a standard part of the underwriting process.

The premium gap between consumers with strong credit and those with weaker credit profiles varies by state, insurer, and coverage level. While specific dollar differences depend on too many individual factors to generalize precisely, industry analyses consistently show that the disparity is material.

Consider the general pattern:

The FTC's 2007 study on credit-based insurance scores confirmed that consumers in lower credit tiers pay more and that the correlation between credit scores and claim frequency held across demographic groups. While the study is not recent, it remains the most comprehensive federal analysis on the topic and is still cited by regulators.

The key takeaway: improving your credit profile can be one of the most effective ways to reduce your car insurance costs over time — in many cases, more impactful than shopping for a different insurer alone.

Because credit-based insurance scores draw from the same credit report data used by lenders, the strategies for improvement overlap significantly with general credit building. Consider the following approach:

1. Review Your Credit Reports for Errors

Under the FCRA, every consumer is entitled to free annual credit reports from each of the three major bureaus (Equifax, Experian, TransUnion) through AnnualCreditReport.com. Errors on your report — incorrect late payments, accounts that do not belong to you, or outdated collection accounts — can drag down your insurance score just as they would your lending score.

Disputing inaccuracies is free and can be done directly with each bureau. If the bureau cannot verify the disputed item, it must be removed.

2. Reduce Outstanding Balances

High credit utilization — the ratio of your balances to your credit limits — is one of the most influential factors in both lending and insurance scores. Paying down revolving balances, particularly on credit cards, can produce measurable score improvements.

3. Avoid Opening Unnecessary New Accounts

Each new credit application generates a hard inquiry on your credit report. While a single inquiry has a small effect, multiple inquiries in a short period can accumulate and signal higher risk to the insurance scoring model.

4. Maintain Long-Standing Accounts

The length of your credit history matters. Closing old accounts — even ones you no longer use — can shorten your average account age and potentially reduce your score. Consider keeping older accounts open with minimal or zero balances.

5. Use a Credit Monitoring Service

Tracking your credit report regularly helps you catch errors early, monitor score changes, and understand which factors are influencing your score. CreditDoc's guide to credit monitoring services compares leading options for consumers who want ongoing visibility into their credit profile.

A common point of confusion is assuming that your FICO score or VantageScore — the numbers you see on banking apps or credit monitoring dashboards — is the same score your insurer uses. It is not.

Credit-based insurance scores use overlapping but differently weighted data. For example:

• A consumer with a strong payment history but high credit utilization might have a moderate FICO score but a relatively better insurance score, because the insurance model may weight utilization differently
• A consumer with a thin credit file (few accounts, short history) may score lower on the insurance model than on a lending model, because the insurance score penalizes limited credit history more heavily

This distinction matters because improving your credit score for lending purposes and improving it for insurance purposes are related but not identical goals. The overlap is large enough that general credit health strategies — paying on time, keeping balances low, maintaining old accounts — benefit both scores. But if your insurance premium seems disproportionately high relative to your credit score, the divergence between models may be the explanation.

You generally cannot request your credit-based insurance score directly, but you can request the adverse action notice from your insurer if your credit was used in a pricing decision. That notice will identify the credit factors that most negatively affected your rate.

If your auto insurance renewal is approaching and you suspect your credit is affecting your premium, consider timing your credit improvement efforts strategically:

• 60-90 days before renewal — Dispute any credit report errors and pay down high-balance revolving accounts. Most credit scoring models update within one to two billing cycles after a balance reduction is reported.
• At renewal — Request re-scoring or shop for new quotes. Some insurers will re-pull your credit at renewal, meaning any recent improvements could be reflected in your new premium.
• Ongoing — Consistent credit management has a compounding effect. A credit-based insurance score, like a lending score, rewards sustained responsible behavior over time.

For consumers working on rebuilding credit, tools like credit builder loans and secured credit cards can help establish positive payment history that eventually flows into both lending and insurance scores.

Understanding the connection between your credit profile and your insurance costs puts you in a stronger position to manage both. Regularly monitoring your credit through a reliable credit monitoring service ensures you are not blindsided by score changes that could ripple into higher premiums at renewal time.