Cutting Your Car Insurance Bill: What Actually Moves the Premium
Car insurance has a particular way of annoying people: the bill goes up when nothing about your driving changed. No tickets, no claims, same car, same commute — and the renewal is higher anyway.
Some of that is real and national. Between September 2020 and September 2025, US auto premiums rose by an average of about 64%. Then 2025 brought cuts as insurers competed for customers again, and 2026 has turned mildly upward: one mid-year analysis put the average full-coverage premium at $2,237, up around 1% in the first half of the year.
But "rates went up" isn't one fact, it's fifty. The same analysis projected Connecticut up 15% by year end, with Kentucky and West Virginia around 8%, while Washington DC, New York and New Jersey all fell by at least 5% in the first half. Your renewal letter is a local event.
What follows is what actually determines the number, in the order it matters.
What sets the price
Number two is the one worth sitting with. In the states that permit it, a credit-based insurance score is reported to be the second most influential rating factor — ahead of your car, your ZIP code and your coverage choices. It is not your FICO score, but it's built from the same credit file, and it moves for the same reasons.
Which means the single most effective thing many people can do about their car insurance has nothing to do with insurance. It's the statement-closing-date trick and the rest of the mechanics in our guide to how credit scores actually move — the same file, priced twice.
Four states have banned the practice for auto insurance: California (under Proposition 103, dating to 1988), Hawaii (auto only — homeowners insurance there may still use it), Massachusetts, and Michigan (since its 2020 no-fault reform). Maryland, Oregon and Utah restrict it without banning it. Washington's ban was struck down in court in 2021 for exceeding statutory authority, and bills were pending in 2026 in Iowa, New York, Oklahoma and Pennsylvania. Sources disagree on New York's current status, so confirm with your own state insurance department rather than a comparison site.
The deductible: run the break-even, skip the rule of thumb
Raising your deductible from $500 to $1,000 is the standard advice, and the standard advice skips the only step that matters.
How much you save varies enormously by state. A national survey put the average at about 9%, but with Michigan near 4% and Massachusetts around 17–19%. Some sites quote ranges as wide as 15–30%, which don't sit well with the survey data. The honest answer is that there is no national number — there's only the two quotes your insurer will give you.
One practical constraint: if the car is financed or leased, the lender almost always requires collision and comprehensive, and frequently caps your deductible at $500 or $1,000. Check the loan documents before you change anything.
Telematics: ask whether it can hurt you
Plug-in devices and phone apps that score your driving are now offered by most big insurers, and the marketing makes them look like free money. The headline caps run from about 10% to 40% depending on the programme, but most drivers are reported to land in the 5–12% range at renewal.
The number isn't the important part. This is:
The asymmetry is everything. Some programmes are one-directional: drive badly and you simply earn a smaller discount. Others are two-directional, and a bad score raises your premium above where it started. Those are completely different products wearing the same name, and the answer is in the programme terms, not the advert.
Two further things worth knowing before you opt in. These systems log hard braking as a risk signal, and they can't distinguish braking hard because you weren't paying attention from braking hard to avoid someone who pulled out. A driver crawling through rush-hour city traffic generates far more of these events than someone on an empty rural highway, at identical real-world safety. And they collect location and behaviour data continuously — if that matters to you, read the data policy, not the discount page.
Liability is the one number to raise
Every other section here is about paying less. This one isn't.
State minimum liability limits are set by legislatures, and they were not set by asking what a serious crash costs. A single hospitalisation can run past $100,000 — more than many states require you to carry — and anything above your limit is a bill addressed to you personally. A common recommendation is at least $100,000 per injured person, with uninsured and underinsured motorist coverage at matching limits, because the driver who hits you is statistically likely to be carrying the minimum or nothing at all.
The limits do move. New Jersey raises its minimums to 35/70/25 on January 1, 2026, and California and Virginia raised theirs in 2025. Notably, when New Jersey's change was analysed, drivers already carrying more than the minimum were expected to see little or no increase — the rise lands on the people who bought the floor.
| Coverage | What it protects | Which way to move it |
|---|---|---|
| Bodily injury liability | Other people's injuries — and your assets | Up. This is the catastrophic-loss coverage |
| Uninsured / underinsured motorist | You, when the at-fault driver has nothing | Up, usually to match your liability limits |
| Collision & comprehensive | Your own car's damage | Judgement call on an older car — see below |
| Deductible | How much of a claim you fund yourself | Up, but only if the break-even is short |
| Rental reimbursement, roadside | Convenience items | Easy cuts if you have alternatives |
Collision and comprehensive on an old car
The usual advice attaches a tidy ratio to this decision. We couldn't verify any particular threshold as an industry standard, so here's the comparison instead of a number.
Collision and comprehensive only ever pay out up to the car's actual cash value, minus your deductible. So on a car worth $3,000 with a $1,000 deductible, the most those coverages can ever do for you is about $2,000 — and that is the ceiling, not the expectation. Set the annual cost of just those two coverages (your insurer can quote the policy with and without) against that ceiling, and against the honest question of whether you could absorb losing the car outright. If the answer is yes, and the coverages cost a meaningful fraction of what they could ever pay, dropping them is defensible. If losing the car would wreck you, keep them regardless of the ratio.
The rest of the list
- Re-shop properly, not loyally. Insurers price new customers and renewing customers differently. Getting three to five quotes is the single most reliable lever here, and the time to do it is before you renew, not after.
- Ask for the discount list out loud. Bundling, paying in full, paperless, low annual mileage, defensive-driving courses, and affinity schemes through an employer, union or alumni association are rarely applied automatically.
- Report a lower commute if yours actually dropped. Mileage is a rating factor and most policies still carry whatever you told them years ago.
- Check the car before you buy it. Repair cost and theft rate drive the premium more than the purchase price. If you're pricing an EV, the Tesla running-cost guide covers how Safety-Score-based pricing changes this calculation.
The short version
- Premiums rose about 64% over five years to September 2025, dipped in 2025, and are drifting up again in 2026 — but by state, not nationally.
- In 46 states your credit-based insurance score is reported as the second biggest factor. Fixing your credit file is car-insurance work.
- It's banned for auto rating in California, Hawaii, Massachusetts and Michigan, and limited in Maryland, Oregon and Utah.
- For the deductible, get both quotes and divide: extra deductible ÷ annual saving = years to break even. Under three is good, over ten is not.
- Before any telematics programme, ask whether it can raise your rate or only shrink your discount. Those are different products.
- Raise liability and uninsured-motorist limits. State minimums were written by legislatures, not by emergency rooms.
- Re-shop with three to five quotes before renewal, every year or two.
Car insurance is one of the few recurring bills where the price is set mostly by things about you rather than things you buy — and two of the biggest, your credit file and your coverage choices, are entirely under your control.
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