By Tyler Brooks · Editor
Published · Updated
Answer in brief
At 18 you can legally sign an insurance contract and buy your own policy. You will need your licence, the vehicle's VIN and title or loan details, your address, and a payment method; most insurers accept a monthly plan with a first installment at binding. Choose liability limits above the state minimum, add uninsured motorist, and carry collision and comprehensive if the car is financed or worth more than a few thousand dollars. Expect the first policy to be expensive and to fall at each renewal; compare several insurers because they disagree sharply about young drivers.
What you need
- Driver's licence number and date first licensed.
- Vehicle year, make, model and VIN; lender information if financed.
- Garaging address and estimated annual mileage.
- Prior insurance information if you were on a parent's policy (it counts as continuous coverage).
- A payment method for the first installment.
Why being on a parent's policy before helps
If you were listed on a parent's policy, you have insurance history. Ask the parent's insurer for a letter of experience or use the policy number; most insurers will credit it as prior insurance, avoiding the no-prior surcharge.
Payment plans
Monthly plans typically require the first month (sometimes two) at binding plus a small installment fee each month. Paying in full for six months is cheaper if you can manage it. Avoid any policy you cannot keep paying—a lapse at 18 adds a surcharge that follows you for a year.
Quote finder
Find auto insurance quotes that fit your situation
Keeping the price down
- Choose a car that is cheap to insure—see cars.
- Enrol in telematics; it is the fastest way to prove your driving.
- Claim good student if you are in school.
- Raise deductibles to $1,000 if you can cover them.
- Compare four or more insurers—see how to compare.
Questions & answers
Can I get car insurance at 18 without my parents?
Yes. At 18 you can sign the contract and hold the policy in your own name.
Do I need a down payment?
Most insurers require the first installment at binding; some require two months.
Does being on my parents' policy count as prior insurance?
Usually yes. Provide the policy details or a letter of experience.
Terms used in this guide
- Named insured
- The person who owns the policy and signs the contract. At 18 you can be a named insured; some insurers require the vehicle's title holder to be one.
- Binding
- The moment coverage takes effect, usually when the first payment is made and the application accepted.
- Down payment (first installment)
- The amount due at binding on a monthly plan—typically one or two months' premium.
Sources and references
Legal figures on this page (minimum limits, filing periods, statutory benefits) are checked against the primary law or the state insurance regulator listed below. Links and figures last verified Nov 2026.
- Teenagers — Insurance Institute for Highway SafetyIndependent researchTeen crash risk, graduated driver licensing research and vehicle recommendations for young drivers.
- Graduated licensing laws by state — Insurance Institute for Highway SafetyIndependent researchState-by-state learner, intermediate and full-licence ages, night-driving and passenger restrictions.
- Facts + Statistics: Teen drivers — Insurance Information InstituteStatistical dataCrash and fatality statistics for drivers 16–19 and graduated licensing context.
- Fatality facts: Teenagers — Insurance Institute for Highway Safety (2024)Statistical dataFatal crash rate per mile driven for 16–19-year-olds is just over 3 times the rate for drivers 20 and older (2022 travel data); all-severity crash rate is over 4 times; risk is highest at 16–17.
- Drivers in fatal motor vehicle crashes by age, 2023 — Insurance Information Institute (2025)Statistical dataFatal-crash involvement per 100,000 licensed drivers: 42.40 (16–20), 35.34 (21–24), 28.97 (25–34), 24.18 (35–44), 21.70 (45–54), 19.45 (55–64), 15.44 (65–74), 16.63 (75+).
- What is covered by a basic auto insurance policy? — Insurance Information InstituteConsumer guidanceDefines bodily injury and property damage liability, MedPay, PIP, uninsured/underinsured motorist, collision, comprehensive and glass coverage.
- Consumer insurance information — National Association of Insurance CommissionersConsumer guidancePlain-language guides from the body of state insurance regulators; links to every state's insurance department and complaint process.
- Auto insurance for teen drivers — Insurance Information InstituteConsumer guidanceAdding a teen to a parent's policy versus a separate policy; good-student and driver-training discounts; vehicle choice.
Practical guidance on this page is original editorial work. Cited sources support factual statements and do not endorse this site. Dollar ranges described as typical or illustrative are editorial estimates, not figures from these sources.
Guide
How Much Car Insurance Costs at 18
What 18-year-olds pay for car insurance on their own policy and on a parent's, why 18 is priced the way it is, and what changes by 19, 21 and 25.
Guide
What Coverage an 18-Year-Old Needs
Liability limits, uninsured motorist, collision and comprehensive for an 18-year-old's first policy—what matters and what to skip.
Guide
Staying on Your Parents' Car Insurance at 18
Whether an 18-year-old can stay on a parent's policy, what residency and vehicle ownership rules apply, how much it saves, and when it stops working.