What Illinois requires
Illinois liability minimums are 25/50/20 - $25,000 per injured person, $50,000 per accident, $20,000 of property damage - and unlike most states at this price level, the required package also includes uninsured motorist coverage. Illinois does not mandate personal injury protection or medical payments; your health plan or MedPay you add yourself handles first-party medical bills.
| Coverage | Illinois minimum | Required? |
|---|---|---|
| Bodily injury liability | $25,000 / $50,000 | Yes |
| Property damage liability | $20,000 | Yes |
| Uninsured motorist | $25,000 / $50,000 | Yes - part of the required package |
| Personal injury protection | None | No - not offered as a state mandate |
| Medical payments | None | No - optional add-on |
The required UM layer is the notable feature. With a meaningful share of Illinois drivers uninsured - elevated in Chicago's outer corridors - the mandated UM coverage means an uninsured or hit-and-run crash still routes through your own policy for bodily injury. $20,000 of property damage remains the weak point: one late-model SUV can exceed it.
Fault rules after a crash
Illinois is an at-fault state using modified comparative negligence. Your recovery from another driver is reduced by your percentage of responsibility, and if a jury or adjuster puts your fault at half the blame or more, you recover nothing at all. The same rule cuts against the other driver: their 49% share still leaves them collecting 51% from you, which is why liability limits above the floor protect you as much as them.
Uninsured motorist coverage steps in when the other driver has no insurance - a collision with an uninsured driver in Illinois becomes a claim on your own UM benefits rather than a dead end. Underinsured situations work differently: your UM pays when the at-fault driver's limits are too low to cover your damages, up to your UM ceiling. Stacking questions and UM reductions get contested; keeping higher UM limits than the state minimum is the cheap answer.
How Illinois rates are set
Insurers file rates with the Illinois Department of Insurance and price primarily on driving record, garaging zip, annual mileage, vehicle, age, marital status, and credit-based insurance scores - Illinois permits credit in rating, unlike California or Massachusetts. Territory is where the state splits: Chicago garaging routinely prices far above downstate counties for identical drivers, and a move across town can re-rate a policy by itself.
- Chicago and the inner suburbs carry the state's highest premiums - density, theft and claim frequency drive it.
- Downstate garaging (outside Cook and the collar counties) prices noticeably lower for the same driver.
- Teen additions and at-fault accidents surcharge for several years; Illinois point suspensions interact with rates.
- Telematics programs are widely offered and permitted.
- Bundling home or renters with auto remains the largest single discount for most households.
What Illinois drivers pay
Illinois lands mid-pack nationally. Quote.com's September 2025 state table put the average around $57 a month for minimum coverage - below the coastal expensive states, above the cheapest rural ones. The spread inside Illinois matters more than the average: a clean-record driver in a quiet downstate zip can pay a fraction of what the same driver pays eight miles from the Loop.
Shopping behavior follows the map. Drivers moving within Illinois should re-quote at the new address immediately, because zip changes re-rate policies regardless of driving history. Urban drivers benefit most from comparing three to five carriers; rural drivers often gain more from asking which credits they are missing on a renewal they never shopped.
How to save in Illinois
- Take every mandated discount: good driver, good student, defensive driving course, low mileage, professional and alumni affinity credits.
- Bundle with renters or homeowners coverage - the largest standard discount available.
- Price telematics: Illinois permits usage-based programs and clean scores cut premiums.
- Raise comp and collision deductibles in steps you could actually pay; liability stays at 100/300/100 rather than the floor.
- Confirm your UM limits match or exceed liability - the required package is only as strong as the numbers on it.
When a claim goes sideways or a cancellation looks unfounded, the Illinois Department of Insurance consumer services division handles complaints - a free process that routinely un-stalls stalled claims.
Illinois coverage gaps worth closing
The state package leaves three gaps open, and each closes cheaply if you do it before a claim rather than after. Property damage at $20,000 is the first: one new crossover exceeds it, and the excess is yours to pay. Medical is the second - Illinois mandates no PIP and no MedPay, so accident bills run through your health plan's paperwork or your own savings until a fault determination lands. The third is underinsurance: the required UM matches state minimums, which is exactly the layer that exhausts first in a serious crash.
- Raise property damage to at least $50,000; newer vehicles and multi-car crashes blow through the floor quickly.
- Add medical payments of $5,000 to $10,000 for first-dollar accident bills without waiting on health-plan coordination.
- Push UM and underinsured limits above the state floor - the required package is a starting point, not a target.
- Rideshare driving and rental cars are excluded from personal policies; a rideshare endorsement or rental reimbursement closes the gap for a few dollars a month.
- Homeowners carrying equity should price a million-dollar umbrella - it lifts liability across every vehicle at once.
Related pages
- Liability limits: how much you need
- How car insurance works
- How to get the cheapest car insurance rates
- Auto insurance in Texas
- Auto insurance hub
Frequently Asked Questions
Is car insurance required in Illinois?
Yes. Every vehicle must carry 25/50/20 liability limits plus uninsured motorist coverage of 25/50. Driving without insurance risks fines, license plate suspension and vehicle registration suspension until coverage is restored.
Is Illinois a no-fault state?
No. Illinois is an at-fault state with modified comparative negligence - your recovery is reduced by your share of fault and barred entirely at 50 percent or more. There is no mandated PIP coverage.
Is uninsured motorist coverage mandatory in Illinois?
Yes - uninsured motorist coverage is part of the required package at limits matching the state minimum liability limits. It pays your bodily injury costs when the at-fault driver has no insurance, including many hit-and-run crashes.
Are minimum limits enough in Illinois?
They meet the law. $20,000 of property damage may not cover one newer vehicle, and $25,000 per person can be exhausted by a single hospital stay. Most agents recommend 100/300/100 with UM matching.
Why is Chicago car insurance so much more expensive?
Garaging zip is a primary rating factor: traffic density, theft rates, repair costs and claim frequency in Chicago and the inner suburbs price well above downstate counties for identical drivers and records.
Last updated: 2026-10-01