A directional estimate relative to the national average — not a quote.
Written & fact-checked by the CoverFormula editorial team · Last reviewed 2026-08-19
Auto insurance pricing is set individually by each carrier and varies enormously by state, ZIP code, credit-based insurance score, exact vehicle make/model, and granular driving-record details — none of which a simple calculator can fully capture. This tool starts from a recent national average premium and applies commonly cited directional risk factors (age, driving experience, at-fault accidents, coverage level, vehicle category) to show roughly how your profile compares — not a binding number.
It starts from a national average annual full-coverage premium, then applies percentage adjustments for age bracket, years of driving experience, each at-fault accident in the last 3 years, and vehicle category, before applying a discount for liability-only coverage if selected.
Estimated Premium = National Average × Age Factor × Experience Factor × (1 + 0.25 × At-Fault Accidents) × Vehicle Factor × Coverage FactorAuto insurance pricing is set individually by each carrier and varies enormously by state, ZIP code, credit-based insurance score, exact vehicle, and driving record details that a simple calculator can't capture. This tool applies commonly cited directional risk factors to a national average — it is not a quote.
Drivers under 25, and especially teenagers, have statistically higher accident rates industry-wide, which insurers price into premiums. Rates typically decrease significantly once a driver reaches their mid-20s with a clean record.
It varies by insurer and state, but a single at-fault accident commonly raises premiums noticeably for 3-5 years, after which many insurers no longer factor it in. Some insurers offer accident forgiveness for a first at-fault accident.