Car Insurance Payment Calculator

A closer look at the factors behind your auto insurance estimate.

Getting a car insurance estimate doesn’t have to feel like a black box. Our estimator uses many of the same factors insurers consider when setting rates, giving you a starting point before you shop for coverage.

Read on to learn which factors we consider, why they matter, and where the numbers come from.

Every auto insurer uses a rating model to calculate your premium. Insurers start with a base rate for your area, then adjust it based on factors such as your age, driving record, vehicle, and coverage.

If a factor suggests that you’re more likely to file a claim, your rate increases. If it suggests that you’re less likely to file a claim, your rate decreases.

These factors work together, which is why a teen driving a sports car can pay significantly more than a 40-year-old driving a sedan.

Your location

Where you live is the biggest factor in your base rate. A driver in South Florida pays much more than one in Iowa because local traffic density, weather, uninsured driver rates, and state insurance laws affect the cost of claims in those areas.

We use your ZIP code to place you in one of ten US pricing regions, each calibrated to real state-level premium data. The national average for a full-coverage monthly premium of $140 serves as the center of the scale.

Age range

Age is one of the strongest predictors of crash risk. Drivers ages 18 to 24 have higher crash rates than drivers in their late 30s and 40s, largely because of differences in driving experience and risk-taking. Crash risk declines through the 20s and is lowest among those ages 35 to 49.  For older adults, crashes may also result in more serious injuries.

Credit score

Research shows that drivers with lower credit scores file more insurance claims, and those claims tend to cost more. California, Hawaii, Massachusetts, and Michigan are the only states that ban credit-based insurance scoring. If you live in one of these states, your provider cannot use your credit score to determine car insurance rates.

Driving record

Your driving history is one of the most important factors insurers use to assess risk. A single at-fault accident can raise your premium by over 50 percent, while a DUI can nearly double it. Providers usually look at the past three years of your driving record for violations and accidents, and five years for DUIs and major offenses.

Annual mileage

The more you drive, the more exposure you have to accidents, which can affect your insurance rate.  The average American drives about 13,500 miles per year, according to federal highway data. Drivers who put fewer miles on their vehicles may qualify for low-mileage discounts with some insurers. Drivers with higher annual mileage may pay more because they spend more time on the road.

Coverage gaps 

Drivers who let their policies lapse are statistically more likely to file claims and have costlier losses. If you have a coverage gap, providers increase your premium; standard insurers might not offer coverage if you have an extended gap, so you’d have to look for non-standard policies. 

Continuous coverage 

The longer you’ve had uninterrupted coverage, the more providers consider you a low-risk driver. Drivers without prior coverage history pay more; those with three or more years of continuous coverage earn a loyalty discount.

After we apply all rating factors, we check for discounts. If you qualify for more than one, the savings add up. In line with standard industry practice, we cap your total discount at 50 percent.

1. NAIC, Auto Insurance Database Report. naic.org. Base rates; credit and vehicle class data.
2. Bankrate, Auto Insurance Rate Analysis. bankrate.com/insurance/car. Rate benchmarks; age, violation, and lapse factor data.
3. ISO/Verisk, Personal Automobile Manual. verisk.com. Multiplicative rating model structure; factor relativity methodology.
4. IIHS, Fatality Facts: Teenagers. iihs.org. Age factor for 18–24; crash frequency and severity data.
5. IIHS, Fatality Facts: Older Drivers. iihs.org. Age factor for 65+; injury severity data.
6. NHTSA, Traffic Safety Facts: Young Drivers. nhtsa.gov. Crash rates for drivers under 25.
7. NHTSA, Electric Vehicle Safety. nhtsa.gov. EV repair cost and risk data.
8. FTC, Credit-Based Insurance Scores Report. ftc.gov. Credit-to-loss correlation; credit multiplier calibration.
9. NAIC, Use of Credit Information by Insurers. naic.org. Credit tier relativities; state prohibition list.
10. FHWA, Annual Vehicle Miles Traveled. fhwa.dot.gov. US average mileage baseline (~13,500 mi/yr).
11. HLDI, Insurance Loss Statistics by Vehicle. iihs.org/hldi. Vehicle type loss data and relativities.
12. J.D. Power, U.S. Auto Insurance Study. jdpower.com. Homeowner and loyalty discount benchmarks.
13. CDC, Motor Vehicle Safety. cdc.gov/motorvehiclesafety. Married driver lower accident rate data.

We analyze average premiums across four coverage levels — minimum liability, standard, full, and full-plus — for good drivers with good credit, as well as other driver profiles, including those with DUIs, at-fault accidents, minor violations, or lower credit scores. We also factor in common discounts like multi-policy, safe driver, homeowner, and low-mileage savings.

Estimates come from a multiplicative rating model, which is the same structure real insurers use. We start from a national base rate for each coverage level and adjust it for age, credit score, driving record, vehicle type, annual mileage, insurance continuity, and location.

Coverage levels are defined as follows:

• Minimum liability: state-minimum bodily injury and property damage liability only
• Standard: liability plus collision coverage
• Full coverage: liability, collision, and comprehensive coverage
• Full coverage plus: full coverage plus roadside assistance, rental reimbursement, and gap coverage

Full and standard coverage averages have a $1,000 deductible, the industry baseline.

This estimator is an educational tool, not an insurance quote. Estimates are based on industry-average data and don’t reflect any specific insurer’s rates. Your actual premium depends on your application and the provider’s own rate filing for your state.

Several factors not included in this estimator can affect your actual premium, including your vehicle’s year, make, and model; your exact garaging address; your claims and motor vehicle record history; your selected coverage types and limits; and your insurer’s own territory experience.

Credit score counts as a factor in this estimator and is legal in 47 US states. Residents of California, Hawaii, Massachusetts, and Michigan should note that their provider cannot use credit in pricing their policy.

Always obtain multiple official quotes from licensed insurers before purchasing a policy.