What Adding a Teen Driver Does to a Car Insurance Bill

Adding a teen driver often makes a household's car insurance bill much larger, because insurers price from crash data and newly licensed teens crash far more often per mile than any other age group. The National Association of Insurance Commissioners (NAIC) puts it plainly: insuring a teen driver will mean additional costs "no matter which insurance policy you choose" ³. Maine's Bureau of Insurance is just as direct, saying that "insuring a youthful driver is expensive" ⁸.

How much more depends on the insurer, the state, the car the teen drives and the discounts that apply. There is no single national figure we could source for the cost of adding a teen, so this page explains the mechanism and the choices regulators point to, rather than quoting a typical increase.

Car insurance prices follow expected claims, and the crash data for young drivers is stark. The Centers for Disease Control and Prevention (CDC) says the risk of motor vehicle crashes is higher among teens ages 16 to 19 than among any other age group, and that their fatal crash rate per mile driven is almost three times that of drivers 20 and older ¹.

The Insurance Institute for Highway Safety (IIHS) reports the same pattern from its latest data. Using 2022 mileage figures, it counts 7.5 fatal passenger vehicle crash involvements per 100 million miles for drivers 16 to 19, compared with 5.1 for drivers 20 to 29 and 1.9 for drivers 30 to 59 ². IIHS says the risk is highest at ages 16 and 17 ².

Risk is also highest right after licensing. The CDC says crash risk is especially high in the first months of driving alone, and that per mile driven, 16-year-olds have a crash rate about 1.5 times that of 18- and 19-year-olds ¹. Insurers may reflect that drop in risk as a teen gains experience, but whether and how fast the added cost eases varies by insurer.

The CDC lists several conditions that raise a teen's crash risk ¹:

• Passengers. Teen or young adult passengers increase the risk for an unsupervised teen driver, and the risk rises with each added passenger.
• Night driving. The fatal crash rate at night for drivers 16 to 19 is about three times that of drivers 30 to 59, per mile driven ¹.
• Seat belts. In 2020, 56% of teen drivers and passengers ages 16 to 19 killed in crashes, whose belt use was known, were not wearing one ¹.
• Sex. In 2020, the crash death rate for male drivers 16 to 19 was three times the rate for female drivers of the same age ¹.

Insurers do not all use the same factors, and some states limit which ones can be used. But this is the data the pricing reflects.

The Texas Department of Insurance says that if there is a new teen driver in your household, you need to insure them ⁴. It adds that while insurance is not legally required for a teen with a learner's permit, you should tell your insurer if a teen is learning in your car, and that failing to do so could lead to a denied claim, a voided policy or nonrenewal ⁴. Rules differ by state, so check with your own state insurance department and your insurer.

The same department says adding a teen to an existing policy is usually cheaper than buying the teen a separate policy ⁴.

Many families plan to hand the teen the least expensive car in the driveway and expect the teen to be priced on that car alone. That may happen, but it is not how every insurer works, and the reason starts with who is on the policy.

Every licensed driver in the home may count. Insurers generally look at the whole household, not only the person who drives a given car. The NAIC says insurance companies can base premiums on all insured drivers in your household ⁹. The Maryland Insurance Administration says an insurer is entitled to collect premiums, under its filed rating rules, for all licensed drivers living in the policyholder's home, including those with learner's permits, unless a driver has been specifically excluded from the policy ⁷. Maine's Bureau of Insurance says an insurer can charge your policy for any licensed driver in your home ⁸.

Which car the teen is rated on varies. Once a teen is on the policy, the insurer has to decide which vehicle that teen's rate is tied to, and practices differ. The Michigan Department of Insurance and Financial Services says many insurance companies rate a teen driver on the most expensive vehicle in the household, while others may base the rate on the vehicle the teen will drive ⁶. The Texas Department of Insurance describes a similar split: if a teenager is the main driver of a car, the company will base the premium on that car; otherwise, the company will base the teen's premium on the car in the family with the highest rate ⁵.

In practice, that means a teen who can take the keys to any car in the home may be rated on a more expensive one than the car the family had in mind. Giving the teen the least expensive vehicle may help less than expected if the insurer assigns the teen to a higher-rated car, or if the teen is not treated as the main driver of the inexpensive one. Each insurer applies its own rating rules, so ask your insurer how it assigns drivers to vehicles, which car your teen would be rated on, and what information it uses to decide who mainly drives each car.

Leaving the teen off is not a workaround. The Texas department says that if you do not tell your insurer when someone in the family starts to drive or turns 16 and it learns about them later, the company will bill you for the extra premium you should have paid, and it might deny claims or decline to renew the policy ⁵. The Maryland administration notes that collision and comprehensive coverage may not be available for an accident involving an undisclosed licensed driver in the household ⁷. Our guide to whether someone else can drive your car explains listed and excluded drivers in more detail.

Regulators point to a handful of levers. None of them removes the added cost, and eligibility varies by insurer.

Discounts. The NAIC lists discounts some insurers offer for a good student under 25, for completing a driver education course, for having two or more cars on a policy, for safety equipment and anti-theft devices, and for having auto and home coverage with the same company ³. The Texas Department of Insurance adds that good grades or test scores can earn discounts that may last for years, that a teen away at college without a car may qualify for a discount, and that tracking safe driving with an app or device usually earns a discount ⁴. Our guide to how telematics programs work explains what those programs record.

The car. Inexpensive vehicles and those with good safety ratings generally cost less to insure, according to the Texas department ⁴. The NAIC notes that adding a teen to an expensive vehicle can raise the premium considerably, and that a modestly priced car may be more suitable ³. As explained above, though, the teen's own car may not be the one the teen is rated on, so how much a modest car helps depends on how your insurer assigns drivers to vehicles ^{5 6}.

Deductibles and coverage. Both regulators mention raising deductibles to lower the premium ^{3 4}. The NAIC suggests doing so only if you can afford the larger out-of-pocket share, and considering lower or no physical damage coverage on older vehicles unless a lender requires it ³. Our page on minimum versus full coverage explains what that trade involves.

Shopping. The NAIC notes that companies can offer noticeably different premiums ³. Give each insurer complete information, including the make, model and year of the car the teen will drive, because the quote is based on it ³.

Several discounts depend on facts that change: grades, age, whether the teen lives at home, and which car they drive. The NAIC suggests reviewing the policy when the teen graduates from high school or turns 18, and whenever a vehicle is added or removed ³. A discount that quietly lapses can look like a rate increase at renewal; see why discounts disappear at renewal.

If your bill rose and a new driver is only part of the story, our main guide on why car insurance goes up and our guide to reading your renewal notice walk through the other common causes.

• ¹ Official record: CDC teen driver risk factors, including the per-mile fatal crash comparison, the 1.5 times rate for 16-year-olds, night driving, the 2020 seat belt figure of 56% and the male-female comparison, checked October 11, 2026.
• ² Reported: IIHS Fatality Facts 2024, teen fatal crash involvements per 100 million miles (2022 mileage data) and the statement that risk is highest at ages 16 and 17, checked October 11, 2026.
• ³ Official record: NAIC consumer guide on insuring a teen driver, covering added cost, listed discounts, vehicle choice, deductibles and when to review the policy, checked October 11, 2026.
• ⁴ Official record: Texas Department of Insurance tips on adding a teen driver, covering the need to insure a teen, learner's permits, discounts and policy choices, checked October 11, 2026.
• ⁵ Official record: Texas Department of Insurance auto insurance guide, on basing a teen's premium on the car the teen mainly drives or otherwise on the family car with the highest rate, and on what can happen when a new driver is not reported, checked October 11, 2026.
• ⁶ Official record: Michigan Department of Insurance and Financial Services guide to insuring a teenage driver, on insurers rating a teen on the most expensive household vehicle or on the vehicle the teen will drive, checked October 11, 2026.
• ⁷ Official record: Maryland Insurance Administration advisory on licensed drivers in the household, on premiums for all licensed household drivers and coverage for undisclosed drivers, checked October 11, 2026.
• ⁸ Official record: Maine Bureau of Insurance guide to insuring youthful drivers, on cost and charging for any licensed driver in the home, checked October 11, 2026.
• ⁹ Official record: NAIC consumer's guide to auto insurance, on basing premiums on all insured drivers in the household, checked October 11, 2026.