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Car Insurance Cost Calculator

Full coverage averages $243 a month nationally, but your fair price depends on your state, age, driving record, and deductible. Enter your profile to benchmark your premium, price the $500 vs $1,000 deductible trade-off, and find out if you are overpaying.

Am I overpaying for car insurance?

Pick your state, driver profile, and coverage — the calculator benchmarks your premium against 2026 national averages, prices the $500 vs $1,000 deductible trade-off, and flags overpaying.

Your state

Full-coverage state averages from 2026 market data.

Coverage type

Full coverage adds collision + comprehensive to liability.

Driver age

Drivers under 25 pay the steepest surcharges.

Car age (years)

Older cars may not need collision and comprehensive.

Driving record

One at-fault accident typically raises rates about 40%.

Miles driven per year

Under 7,500 miles a year usually earns a low-mileage break.

Deductible (collision + comprehensive)

Your out-of-pocket per claim — higher means a lower premium.

What you pay now ($/yr)

Your current annual premium. Enter 0 if you do not know it.

Bundled home/renters + auto (about 10% off)

Most big insurers discount multi-policy households.

Telematics / safe-driving program (about 8% off)

An app or plug-in that scores your driving for a discount.

Try:

Estimated fair annual premium$2,306$192 a month · full coverage, $500 deductible, US average

Looks high — about $594 a year over this profile’s benchmark.

How it works: the calculator starts from the 2026 national average annual premium — $2,912 for full coverage, $1,584 for liability-only (Experian, September 2026) — then scales it by your state’s average, age band, driving record, annual mileage, deductible, and checked discounts. The result is a benchmark estimate for your profile, not a quote: real insurers also weigh your exact ZIP code, car model, and credit-based insurance score.

How the car insurance cost math works

Car insurance pricing looks mysterious, but it is mostly multiplication: a base rate for your coverage type, scaled up or down by the risk factors the insurer can measure.

The formula

estimated premium = base × state factor × age factor × record factor × mileage factor × deductible factor × discount factors · base = $2,912 full coverage / $1,584 liability-only (2026 national averages) · fair range = benchmark × 0.85 to × 1.15

Worked example: 35, clean record, Vermont, $500 deductible

Start with the $2,912 national full-coverage average. Vermont’s average is $1,383, so the state factor is 1,383 ÷ 2,912 ≈ 0.475. Age 35, a clean record, and 12,000 miles all factor at 1.00. A $500 deductible trims about 12% (× 0.88), and bundling home + auto takes off another 10% (× 0.90). Multiply through: 2,912 × 0.475 × 0.88 × 0.90 ≈ $1,095 a year — about $91 a month.

If this driver actually pays $1,500, they are roughly $405 (37%) above the benchmark — a clear sign to shop for new quotes.

Where this comes in handy

Answering "am I overpaying?": enter your current annual premium and the tool compares it to the fair range for your exact profile — flagging anything 15% or more over.
Pricing the deductible decision: the calculator shows what $500 vs $1,000 costs you per year and the break-even point — how many claim-free years it takes the savings to cover the extra claim risk.
Deciding when to drop full coverage: for older cars, the tool checks the car’s rough value against the collision/comprehensive slice of the premium and flags when liability-only makes more sense.
Seeing what a ticket costs you: flip the driving-record selector between clean and one ticket to watch the benchmark move — usually about a 22% jump.
Valuing discounts honestly: toggle the bundle and telematics boxes to see each discount priced into your number instead of trusting the insurer’s headline.
Setting a shopping target: the benchmark gives you the number to beat when quotes arrive — any quote under it is genuinely competitive for your profile.

For the full price breakdown — what each coverage type buys, the five factors that move your rate most, and seven legitimate ways to pay less — see the guide How much does car insurance cost per month?. Financing the car itself? Use the auto loan term calculator and the lease vs buy calculator.

Car insurance costs — frequently asked questions

What is the average cost of car insurance per month in 2026?

Nationally, about $243 a month for full coverage and $132 a month for state-minimum liability, based on September 2026 market data. The spread by state is huge: Vermont averages around $115 a month for full coverage while Maryland averages about $352. Your price depends on your state, age, record, car, mileage, and deductible.

How much does raising my deductible from $500 to $1,000 save?

Typically 15–30% of the collision and comprehensive portion of your premium — often a few hundred dollars a year. The calculator prices it for your exact profile and shows the break-even: how many claim-free years it takes the savings to cover the extra $500 of claim risk. The rule of thumb: pick the highest deductible you could comfortably pay this week.

What is the difference between collision and comprehensive coverage?

Collision covers damage to your car from a crash — hitting another car, a pole, or a curb. Comprehensive covers everything else: theft, hail, vandalism, falling objects, and hitting an animal. You can often set different deductibles for each — for example $1,000 for collision and $250 for comprehensive, since hail and deer do not care how carefully you drive.

Should I drop full coverage on an old car?

Probably, once the math flips. A common rule: when ten years of the collision/comprehensive portion of your premium costs more than the car is worth, switch to liability-only and bank the difference. The calculator runs this check on your car’s age automatically.

Do I pay my deductible every month?

No. A deductible is per claim, not per month — you pay it only when you file a covered collision or comprehensive claim, and it is subtracted from the insurer’s payout. If repairs cost less than your deductible, you simply do not file.

How often can I change my car insurance deductible?

There is no set limit — most insurers let you change it at any time, though many drivers do it at renewal. The change only applies to future claims, never retroactively to an accident that already happened.

Does liability-only insurance have a deductible?

Generally no. Liability coverage pays for damage and injuries you cause to other people, and it carries no deductible. Deductibles only apply to damage to your own car under collision and comprehensive coverage.

Why did my premium go up when I had no tickets or accidents?

Rates follow repair costs, parts prices, and claim trends in your state — not just your record. Insurers also re-price for mileage changes, credit-based insurance scores where allowed, and rising litigation costs. A clean record keeps your factor at 1.0, but the base rate underneath it can still climb.