Does Your Credit Score Affect Car Insurance? (Yes — Here's How)

In most states, yes — your credit history influences what you pay for car insurance, and the effect can be larger than a speeding ticket. But the number insurers use is not your credit score. It is a separate figure called a credit-based insurance score, built from similar ingredients for a completely different purpose, and understanding the difference is what makes the whole practice make sense — and tells you what you can actually do about it.

A credit-based insurance score is not a credit score

The NAIC draws the line cleanly: a credit-based insurance score is based partly or entirely on information from your credit history, and it is used to estimate how likely someone is to file an insurance claim — not how likely they are to repay a loan. Traditional credit scores predict loan repayment; insurance scores predict claims, and they may weigh the same credit factors differently.

That is why you cannot look up your insurance score the way you check your credit score, and why a person with a good credit score does not automatically have a good insurance score, though in practice the two tend to move together — the underlying credit behaviour feeds both.

How widely it is used

Almost universally, where it is allowed. The NAIC cites FICO's estimate that about 95 percent of auto insurers and 85 percent of homeowners insurers use credit-based insurance scores in states where the practice is permitted. If you live in a state that allows it, you should assume your insurer is using one.

Insurers use the score in two places: underwriting, which is the decision about whether to offer you a policy at all, and rating, which is the premium you are charged. The industry's argument, as the Insurance Information Institute lays out, is that the scores are statistically predictive of claim frequency; the criticism is about fairness and what the correlation actually reflects. Both positions are why the practice is regulated so unevenly across states.

Where it is banned or restricted

This is genuinely state-by-state. A handful of states prohibit using credit in auto insurance pricing altogether, and others restrict how it can be used. More broadly, the NAIC notes that in most states insurers cannot use the score as the sole reason to raise your rate, or to deny, cancel, or refuse to renew a policy — credit can be a factor, but not the only one.

Rather than trusting any list you read online, including this one, check your own state: the NAIC publishes a state-by-state overview, and your state insurance department can tell you exactly what insurers may and may not do with credit where you live.

What this means for your premium

Two people with identical cars and identical driving records can pay meaningfully different premiums because of their credit histories. If your credit has improved substantially since you bought your policy, that is a concrete reason to re-shop — your insurance score may have improved with it, and a new quote captures that where your auto-renewal may not.

The reverse is also true, and worth knowing in advance: a period of financial stress — missed payments, high balances, collections — can show up in your insurance pricing even though your driving never changed. If a renewal jumps and nothing else moved, credit is one of the places to look.

What actually improves your insurance score

Because the score is built from your credit history, the levers are credit levers:

• Pay on time. Payment history is the dominant ingredient in credit-based scores of every kind.
• Reduce outstanding balances, which lowers your utilisation.
• Keep old accounts open, since a longer history generally helps.
• Limit new credit applications in a short window.
• Check your credit reports for errors and dispute anything wrong — a mistake on your report can quietly cost you on insurance as well as loans.

None of this moves overnight, but insurance is a repeat purchase: an improvement this year is cheaper premiums at every renewal after it. And if your state allows insurers to consider extraordinary life circumstances — some require it for events like medical emergencies or divorce — ask, because you may be entitled to have a credit hit from a documented event set aside.

Your rights when credit hurts your quote

If information in your credit history leads an insurer to charge you more or decline you, you are generally entitled to be told that and to know which consumer reporting agency supplied the information, which lets you pull the report and dispute errors. If you think a credit-based decision was handled improperly, your state insurance department takes complaints at no cost.

The bottom line: in most states your credit history feeds a separate credit-based insurance score that most insurers use in pricing, it cannot usually be the sole reason for an adverse decision, and a few states ban the practice entirely. The practical moves are the boring ones — pay on time, keep balances down, fix report errors — plus one insurance-specific habit: re-shop your coverage after your credit improves. Check your own state's rules with your state insurance department, since this varies more than almost anything else in auto insurance.