Auto Insurance Calculator: Compare Quotes on Equal Terms

Auto insurance quote comparison calculator

Enter the full premium for each quote and the policy term it covers. The calculator shows a monthly equivalent, a 12-month equivalent, and the difference.

Comparison tool only. This calculator performs simple arithmetic on the figures you enter. It is not a quote and does not predict what any insurer will charge.

Make sure the quotes match first

The calculator compares prices, not coverage. Before entering two quotes, confirm they have the same drivers, vehicles, liability limits, uninsured motorist limits, deductibles, and optional coverages. The coverage-terms table later on this page lists each item to match.

Installment fees and payment plans

Monthly payment plans often add installment fees, and some insurers discount paying in full. To compare true costs, add any fees to the premium you enter, or compare the paid-in-full price for both quotes.

Reading your results

A six-month quote may look cheaper than a twelve-month quote until you convert both. Remember that six-month policies can be re-rated at each renewal, while twelve-month policies lock in the rate for a full year. A small monthly difference may be worth it for better coverage, claims service, or a stronger insurer.

Six-month vs. twelve-month policies

Many insurers sell six-month auto policies, while others offer twelve-month terms. A six-month policy can be re-rated twice a year, so improvements in your record show up sooner, but price increases do too. A twelve-month policy locks the rate for longer, which helps with budgeting. When comparing, convert both to the same period with the calculator, then weigh the stability of the longer term against the flexibility of the shorter one.

Context: average costs

For context, NAIC reported a 2023 countrywide average auto insurance expenditure of $1,281.60, and state averages vary widely. See our auto insurance rates by state guide.

Next steps

If the quotes are close, compare service and financial strength. See our auto insurance comparisons guide, or request a quote below.

Coverage terms to match on every quote

Limits shown are examples, not recommendations. State minimum requirements differ.

Three coverage levels compared

Examples only, not recommendations. Add UM/UIM at matching limits where possible.

Moving from the minimum to a middle level often costs less than people expect, because liability premiums do not rise in proportion to limits. Ask for both prices before deciding.

Ways to lower your premium

• Compare at least three quotes with identical coverage every year or two, and whenever your premium jumps at renewal.
• Raise collision and comprehensive deductibles to an amount you could pay tomorrow without strain.
• Drop collision and comprehensive on an older car only when the car's value is low enough that you could replace it yourself.
• Ask about every discount: multi-policy, multi-vehicle, good student, defensive driving, paperless, paid-in-full, and safety equipment.
• Try a driving-data program if you drive carefully and are comfortable sharing driving data. See usage-based insurance.
• Keep continuous coverage. Even a short lapse can raise future rates.
• Report accurate mileage. Lower annual mileage can mean a lower premium.
• Bundle auto with renters or homeowners insurance where the combined price is lower.

Discounts to ask about

Discount names, amounts, and availability vary by insurer and state.

Coverage you should think twice about cutting

Some coverage cuts save very little and expose you to large losses. Be cautious about:

• Buying only the state minimum liability. Minimum limits can be exhausted by a single serious injury, leaving you personally responsible for the rest.
• Rejecting uninsured motorist coverage. It protects you when the at-fault driver has no insurance or too little. See uninsured and underinsured motorist coverage.
• Dropping collision on a financed car. Lenders and lessors usually require it.
• Letting the policy lapse between vehicles or during a move.

How insurers set your price

Most insurers price a policy using your driving record, years licensed, age where allowed, the vehicle, where it is garaged, annual mileage, coverage limits, deductibles, prior insurance history, and, where state law permits, a credit-based insurance score. Each insurer weighs these factors differently, which is why quotes for the same driver can differ by hundreds of dollars. Improving the factors you control, especially your record and continuous coverage, pays off over several renewals.

Payment plans and fees

How you pay can change your total cost. Many insurers charge installment fees for monthly payments, and some offer discounts for paying the full term upfront, enrolling in automatic payments, or going paperless. If paying in full is not possible, ask which payment plan has the lowest fees. Missing a payment can cancel your policy and create a lapse, which raises future rates, so set up reminders or autopay.

If you are considered high risk

If several insurers decline you because of violations, accidents, a lapse, or a DUI, you still have options. Many insurers specialize in higher-risk drivers, and every state has a residual market plan for drivers who cannot find coverage in the voluntary market. Prices are higher, but keeping coverage continuous and your record clean will usually bring rates down over three to five years. If a court or the motor vehicle agency requires an SR-22 or similar filing, see our SR-22 insurance and high-risk auto insurance pages.

When an agent may help

Online tools work well for simple situations. A conversation with a licensed agent may be more useful when:

• You have a teen driver, several vehicles, or drivers with recent accidents or violations.
• You need an SR-22 or other state filing. See our SR-22 insurance page.
• You use a vehicle for rideshare, delivery, or other business purposes.
• You own a home, rental property, or significant savings and want liability limits that work with an umbrella policy.
• You have had a claim denied or a policy nonrenewed and need help understanding your options.

An agent can also explain differences in policy wording that are hard to see on a results page.

Switching insurers without a gap

If a new quote is lower, switch carefully so you are never uninsured:

1. Confirm the final price after the insurer verifies your information.
2. Set the new policy to start on or before the date the old one ends.
3. Give the new insurer your lender or lessor information if the vehicle is financed.
4. Save your new ID cards and declarations page.
5. Cancel the old policy effective the same day, and ask about any refund of unused premium.
6. If you have an SR-22, confirm the new insurer files it before the old filing ends.

What to have ready for a quote

These details help produce accurate quotes.

1. Driver details. License numbers and dates of birth for every household driver.
2. Vehicle VINs. And annual mileage for each vehicle.
3. Driving history. Accidents and violations in the past three to five years.
4. Current declarations page. To match limits and deductibles.
5. Garaging address. Where each vehicle is kept.

Auto insurance calculator FAQs

Related guides

• Auto insurance quotes
• Auto insurance comparison
• Auto insurance rates by state

Your next step

Request a quote, and a licensed agent will compare options available to us using the coverage you choose.