Illinois State Guide

Car Accident Claims
in Illinois

Chicago is one of the most congested cities in the US, with high accident rates on the I-90/94 and I-290 corridors. This guide covers Illinois-specific laws, average settlement amounts, and exactly what you need to do to protect your claim.

Updated March 2026 Illinois law reviewed

Illinois Car Accident Laws at a Glance

Statute of Limitations
2 years from accident date
Fault Rule
Modified Comparative (51% bar rule)
No-Fault State?
No — Illinois is an at-fault state
Min. Liability Insurance
$25,000/$50,000/$20,000
Average Settlement
$35,000–$55,000 (injury claims)

Illinois Fault Rules Explained

Illinois follows modified comparative fault with a 51% bar. If you are 51% or more at fault, you cannot recover. If you are 50% or less at fault, your award is reduced by your percentage of fault.

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Frequently Asked Questions

How long do I have to file a car accident claim in Illinois?
Illinois has a 2-year statute of limitations for personal injury claims from car accidents, measured from the date of the accident. For wrongful death claims, the 2-year period runs from the date of death. If the at-fault driver was a government employee (city bus, state vehicle), you may have as little as 1 year to file a notice of claim. Missing the deadline permanently bars your claim.
What is Illinois's comparative fault rule?
Illinois uses modified comparative fault with a 51% bar. This means: (1) if you are 50% or less at fault, you can recover damages reduced by your percentage of fault; (2) if you are 51% or more at fault, you are completely barred from recovery. For example, if you were 30% at fault and your damages are $100,000, you recover $70,000.
What is the average car accident settlement in Illinois?
The average car accident settlement in Illinois ranges from $15,000 for minor soft tissue injuries to over $500,000 for serious injuries. Cook County (Chicago) tends to produce higher verdicts than downstate counties due to larger jury pools and higher cost of living. Soft tissue injuries average $20,000–$40,000; herniated disc cases average $60,000–$200,000; cases requiring surgery can exceed $300,000.
Do I need to report a car accident to the Illinois DMV?
In Illinois, you must report an accident to the Illinois Department of Transportation (IDOT) if it results in injury, death, or property damage over $1,500. The report must be filed within 10 days using the Illinois Motorist Report form. You should also file a police report at the scene. Failure to report can affect your insurance claim.
What are Illinois's minimum car insurance requirements?
Illinois requires all drivers to carry: $25,000 per person / $50,000 per accident bodily injury liability; $20,000 property damage liability; and uninsured motorist coverage of $25,000/$50,000. Illinois does not require underinsured motorist coverage, but it is strongly recommended given the high number of underinsured drivers.
How does Chicago traffic affect car accident claims?
Chicago's dense traffic creates unique claim considerations: (1) higher frequency of multi-vehicle accidents on expressways; (2) more pedestrian and cyclist accidents in the Loop and surrounding neighborhoods; (3) Cook County courts tend to award higher damages than downstate; (4) traffic camera footage is more widely available in Chicago, which can be crucial evidence; and (5) rideshare accidents (Uber/Lyft) are more common in urban areas.

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