Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Estimated annual premium
$1,701
Per month
$142
Per 6-month policy term
$851
Cost of your accidents / violations
$0
Age rating factor applied
1.00
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How to use this
- 1Enter typical premium in your area ($/year).
- 2Enter driver age.
- 3Enter at-fault accidents / major violations (last 3 yrs) (count).
- 4Enter annual mileage (miles).
- 5Enter liability limits.
- 6Enter comp & collision deductible.
- 7Enter discounts (multi-policy, telematics, etc.) (%).
- 8Read your estimated annual premium on the right — it updates as you type.
- 9Hit Share to keep the scenario or send it to someone.
About this calculator
Auto insurance pricing looks opaque because carriers publish rates, not rating factors. In practice a personal auto premium is a base rate for your state and vehicle class multiplied by a short list of relative factors: driver age band, years licensed, at-fault accidents and violations in the last three to five years, annual mileage, the liability limits you buy, and the comprehensive and collision deductible you accept. This estimator applies typical US relativities to a base annual premium so you can see the direction and rough size of each decision before you shop. Raising a collision deductible from $500 to $1,000 commonly trims 8-12% off the physical damage portion; a single at-fault accident commonly adds 40% or more for three years; dropping full coverage on an older vehicle removes that portion entirely. Use the output as a planning range and then get real quotes — every carrier weights these factors differently, and state regulation limits which factors may be used at all.
Worked example
Using the values the calculator loads with:
Inputs
- Typical premium in your area: 1800 $/year
- Driver age: 25-49
- At-fault accidents / major violations (last 3 yrs): 0 count
- Annual mileage: 12000 miles
- Liability limits: 100/300/100
- Comp & collision deductible: $500
- Discounts (multi-policy, telematics, etc.): 10 %
Results
- Estimated annual premium: $1,701
- Per month: $142
- Per 6-month policy term: $851
- Cost of your accidents / violations: $0
- Age rating factor applied: 1
What each field means
Inputs
- Typical premium in your area ($/year)
- The typical premium in your area used in the calculation, measured in $/year. Starts at 1800 $/year so you have a working example on load. Accepted range: 300–8000 $/year.
- Driver age
- Pick the option that matches your situation — the maths changes per option. Choices: Under 21, 21-24, 25-49, 50-64, 65+.
- At-fault accidents / major violations (last 3 yrs) (count)
- The at-fault accidents / major violations (last 3 yrs) used in the calculation, measured in count. Starts at 0 count so you have a working example on load. Accepted range: 0–5 count.
- Annual mileage (miles)
- The annual mileage used in the calculation, measured in miles. Starts at 12000 miles so you have a working example on load. Accepted range: 1000–40000 miles.
- Liability limits
- Pick the option that matches your situation — the maths changes per option. Choices: State minimum (25/50/25), 100/300/100, 250/500/250.
- Comp & collision deductible
- Pick the option that matches your situation — the maths changes per option. Choices: Liability only (no comp/collision), $250, $500, $1,000, $2,000.
- Discounts (multi-policy, telematics, etc.) (%)
- The discounts (multi-policy, telematics, etc.) used in the calculation, measured in %. Starts at 10 % so you have a working example on load. Accepted range: 0–40 %.
Results
- Estimated annual premium
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Per month
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Per 6-month policy term
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Cost of your accidents / violations
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Age rating factor applied
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Why does my quote differ from this estimate?
Carriers use hundreds of rating variables including credit-based insurance scores where permitted, garaging ZIP code, vehicle trim, and claims history from shared databases. This tool models the six factors that move premiums most, so treat it as a planning range rather than a quote.
How much does raising my deductible really save?
Only the comprehensive and collision part of the premium responds to the deductible. Going from $500 to $1,000 typically saves under 10% of the total bill, so make sure you can actually fund the higher deductible before taking it.
When should I drop full coverage?
A common test: if annual comp and collision premium exceeds roughly 10% of the car's actual cash value, the coverage is buying back very little. Run the numbers with the liability-only option to see the difference.
Do accidents raise rates forever?
No. Most carriers surcharge for three to five years and then drop the factor, which is why the record input here is limited to recent incidents.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Car Insurance Premium Estimator. Retrieved from https://www.revenuelab.fyi/toolbox/car-insurance-premium-estimator
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/car-insurance-premium-estimator" target="_blank" rel="noopener">Car Insurance Premium Estimator — RevenueLab</a> (2026).</p>
Source: [Car Insurance Premium Estimator — RevenueLab](https://www.revenuelab.fyi/toolbox/car-insurance-premium-estimator) (2026).