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Four terms show up on every car insurance policy and quote: premium, deductible, limits and surcharge. Here's what each one actually means and how they interact.
Your premium is simply the price of the policy — what you pay in exchange for coverage. It's due on each renewal (commonly every six or twelve months, sometimes split into installments), and if it lapses without payment, your coverage ends once any grace period runs out.
Your deductible is the amount you agree to pay out of pocket before your collision or comprehensive coverage kicks in. If you carry a $500 deductible and a covered accident causes $3,000 in damage, you pay the first $500 and the insurer covers the remaining $2,500. If the damage only comes to $400, it's on you — that's below your deductible, so there's nothing for the insurer to pay.
As a rule, a higher deductible means a lower premium, since you're taking on more of the risk yourself. Minimum deductible amounts vary by insurer, state and vehicle. It's often worth paying for minor damage yourself rather than filing a claim: if a $550 repair is barely above your $500 deductible, filing nets you just $50 from the insurer but can still trigger a premium increase that costs you more over time.
Limits are the maximum amount your insurer will pay out for a covered claim. The higher your limits, the higher your premium — but if you're at fault and the damage exceeds your limit, you're personally on the hook for the rest. Two limits matter most: bodily injury limits (medical costs, rehabilitation or wrongful-death costs for people you injure, capped per person and per accident) and property damage limits (repairing or replacing others' vehicles or property).
Every state sets its own minimum required limits, and they vary significantly — see our state-by-state guides for the current minimum in your state, since these numbers do change over time as states update their requirements.
A surcharge is the amount your premium can increase after a claim, and how much depends on your insurer, your driving record and how many previous claims you've filed. Many insurers won't surcharge you at all for a first accident after a long claim-free stretch — often marketed as an "accident forgiveness" program. Where a surcharge does apply, it's typically calculated as a percentage added to the insurer's base rate for your policy, so the same at-fault accident can cost noticeably more or less depending on which company you're with.
AutoInsuranceQuery editorial team. Last reviewed: September 16, 2026.
