Illinois Car Accident Laws: Everything You Need to Know

AT A GLANCE:

– System: Fault state (traditional tort)

– Comparative fault: Modified 50% bar (changed from 51% in 2023)

– Statute of limitations: 2 years PI, 5 years PD (longest PD among major states)

– Minimum insurance: 25/50/20

– DMV report threshold: $1,500 (highest among major states)

– Key law: Dram Shop Act — can sue bars that served drunk drivers

– Annual accidents: ~320,000

Illinois law underwent a significant change in 2023 when the comparative fault rule shifted from a 51% bar to a stricter 50% bar. This guide covers every aspect of Illinois car accident law that affects your rights and recovery.

Illinois’s Fault System

Illinois is a traditional fault/tort state. This means:

The driver who caused the accident is legally responsible for damages
There is no PIP (Personal Injury Protection) or no-fault requirement
Victims pursue compensation through the at-fault driver’s liability insurance, their own insurance coverage, or a personal injury lawsuit
Both medical expenses and property damage follow fault-based rules

Unlike no-fault states (New York, New Jersey, Florida), Illinois does not require drivers to file medical claims with their own insurer first. The claim process centers entirely on establishing who was at fault.

Illinois’s Comparative Fault Rule — The 2023 Change

The Most Important Change in Recent Illinois Accident Law

Illinois made a significant change to its comparative fault rule in 2023 under Public Act 102-0489. The rule shifted from modified 51% to modified 50% (735 ILCS 5/2-1116).

What Changed

	Before 2023 (51% Bar)	After 2023 (50% Bar)
Rule	Recover if fault is 50% or less	Recover if fault is 49% or less
50/50 split	Recovery allowed (reduced by 50%)	No recovery
Barred at	51%+ fault	50%+ fault
Effect	More lenient	Stricter

Why This Matters

The shift from 51% to 50% may seem like a small change, but its practical impact is significant:

At exactly 50% fault, Illinois plaintiffs now recover nothing. Before 2023, they could recover 50% of their damages
In a disputed accident where fault is roughly evenly split, the outcome is now all-or-nothing rather than a reduced recovery
Insurance adjusters and defense attorneys in Illinois now have a lower threshold to target — pushing a plaintiff’s fault to 50% eliminates the entire claim

How the 50% Bar Works in Practice

Your Fault %	$100K Damages	Recovery
0%	$100,000	$100,000
10%	$100,000	$90,000
25%	$100,000	$75,000
40%	$100,000	$60,000
49%	$100,000	$51,000
50%	$100,000	$0
60%	$100,000	$0
100%	$100,000	$0

Practical Example

Consider a T-bone collision at an intersection. You entered the intersection on a yellow light; the other driver was speeding. If fault is assigned 49% to you and 51% to the other driver, you recover $51,000 on a $100,000 claim. But if fault shifts to 50/50 — just one percentage point — you recover nothing.

This razor-thin margin makes evidence collection, witness testimony, and experienced legal representation more critical than ever in Illinois accident cases.

How Fault Is Determined in Illinois

Fault is assessed through multiple sources:

Police crash reports and officer observations at the scene
Physical evidence: skid marks, vehicle damage patterns, point of impact, debris fields
Witness testimony from bystanders, passengers, and other drivers
Traffic camera, dashcam, and surveillance footage
Accident reconstruction analysis (in complex or high-value cases)
Traffic law violations: speeding, running red lights, distracted driving, DUI
Expert testimony on vehicle dynamics, road conditions, or medical causation

Comparison to Other States

State	Comparative Fault Rule	At 50% Fault
Illinois	Modified 50% bar	No recovery
Georgia	Modified 50% bar	No recovery
Texas	Modified 51% bar	Recovery allowed
Ohio	Modified 51% bar	Recovery allowed
Florida	Modified 51% bar	Recovery allowed
California	Pure comparative	Recovery allowed
New York	Pure comparative	Recovery allowed
North Carolina	Contributory negligence	No recovery at any fault

Illinois’s rule is now as strict as Georgia’s and stricter than Texas, Ohio, and Florida. Only North Carolina’s contributory negligence rule (any fault bars recovery) is harsher.

Statute of Limitations

Claim Type	Deadline	Citation
Personal injury	2 years	735 ILCS 5/13-202
Property damage	5 years	735 ILCS 5/13-205
Wrongful death	2 years from date of death	740 ILCS 180/2
Government entity	1 year	Local Governmental and Governmental Employees Tort Immunity Act

Key Points

The 5-Year Property Damage Deadline:

Illinois’s 5-year property damage statute of limitations is the longest among all major states covered on this site. For comparison:

Ohio: 2 years
Texas: 2 years
California: 3 years
New York: 3 years
Florida: 4 years
Illinois: 5 years

This extended deadline gives Illinois accident victims significantly more time to pursue property damage claims. However, the 2-year PI deadline is standard and should not be relied upon for delays.

Government Claims:

Claims against government entities (state, county, city vehicles, public transportation) must be filed within 1 year under the Local Governmental and Governmental Employees Tort Immunity Act. This is half the standard 2-year PI deadline.

Minors:

The statute of limitations for minors is tolled (paused) until they reach 18. A minor injured in a car accident has until their 20th birthday to file a personal injury claim.

Discovery Rule:

In rare cases where injuries are not immediately apparent, the discovery rule may extend the deadline. The clock starts when the plaintiff knew or should have known about the injury. This is fact-specific and requires legal analysis.

Minimum Insurance Requirements

Coverage	Minimum	Citation
Bodily Injury per Person	$25,000	625 ILCS 5/7-601
Bodily Injury per Accident	$50,000	625 ILCS 5/7-601
Property Damage	$20,000	625 ILCS 5/7-601
UM/UIM	25/50/20	Must match liability unless rejected in writing

UM/UIM Coverage — Automatic in Illinois

This is one of the most important and underappreciated features of Illinois auto insurance law. Unlike many states where UM/UIM is optional, Illinois requires insurers to automatically include UM/UIM coverage matching your liability limits. You have this coverage unless you specifically rejected it in writing.

Why This Matters:

If the at-fault driver is uninsured, your UM coverage pays for your injuries
If the at-fault driver’s insurance is insufficient, your UIM coverage makes up the difference
Many Illinois drivers do not realize they have this coverage because they never actively selected it
Check your declarations page — you almost certainly have UM/UIM unless you signed a written rejection

What Illinois Drivers Should Carry

While 25/50/20 is the legal minimum, the following is recommended:

100/300/100 for liability coverage
UM/UIM matching your liability limits (likely already included)
MedPay of at least $5,000-$10,000 (since Illinois has no PIP)
Collision and complete for your own vehicle

Accident Reporting

Requirement	Detail
Reporting threshold	$1,500 property damage or any injury/death
Deadline	10 days
Filed with	Illinois Department of Transportation (IDOT)
Police report	Required for injuries; recommended for all accidents

The $1,500 Threshold — Highest Among Major States

Illinois has the highest reporting threshold among the major states covered on this site:

State	Reporting Threshold
Florida	$500
Georgia	$500
New Jersey	$500
California	$1,000
Ohio	$1,000
North Carolina	$1,000
Texas	$1,000
New York	$1,001
Pennsylvania	$1,000
Illinois	$1,500

What This Means:

Accidents with less than $1,500 in property damage and no injuries do not legally require a report to IDOT
However, a police report is still strongly recommended for every accident, regardless of the damage amount
A police report provides independent documentation that helps during the insurance claims process
Without a police report, the claims process becomes a “your word against theirs” situation

How to File

If police respond at the scene, they file a crash report with the investigating agency
If no officer responds, file a driver’s crash report with IDOT within 10 days
The Illinois driver’s crash report form is available on the IDOT website
In Chicago, reports can also be filed at the nearest police district station

Key Illinois-Specific Laws

No PIP Requirement

Illinois is a traditional fault/tort state with no PIP requirement. After an accident, medical bills are covered through:

The at-fault driver’s liability insurance — the primary avenue for compensation
Your own health insurance — covers treatment as usual, potentially subject to subrogation
MedPay (optional auto insurance add-on) — covers your medical expenses regardless of fault, typically $1,000-$25,000. Strongly recommended in Illinois since there is no PIP
UM/UIM coverage — if the at-fault driver is uninsured or underinsured

Dram Shop Liability (235 ILCS 5/6-21)

Illinois has one of the strongest Dram Shop Acts in the country. This law creates a powerful additional source of recovery for accident victims.

What It Allows:

Victims can sue bars, restaurants, liquor stores, and other alcohol sellers that served alcohol to a visibly intoxicated person who then caused an accident
The claim is against the establishment, not just the intoxicated driver
The establishment’s commercial liability insurance (typically much higher limits than personal auto policies) may be available

When It Applies:

The driver was intoxicated at the time of the accident
The establishment served the driver when they were already visibly intoxicated
The intoxication was a proximate cause of the accident

Why It Matters:

The at-fault driver may have minimum insurance coverage (25/50/20), which may not cover serious injuries
The establishment’s commercial policy often has much higher limits ($1 million+)
This creates a second, often deeper-pocketed, source of recovery

Deadline:

Dram Shop claims have a 1-year statute of limitations — shorter than the standard 2-year PI deadline. This is a critical deadline to watch.

Social Host Liability:

Illinois generally does not extend dram shop liability to social hosts (private individuals hosting parties) unless they served alcohol to a minor. Social hosts who serve adults are typically not liable under the Dram Shop Act.

Distracted Driving (625 ILCS 5/12-610.2)

Illinois prohibits handheld phone use while driving. Key points:

Holding a phone while driving is a moving violation
Texting while driving is separately prohibited
Violations are recorded on your driving record
In accident cases, phone use at the time of the crash can increase your assigned fault percentage
Cell phone records can be subpoenaed as evidence
Penalties: $75 first offense, $100 second, $125 third; subsequent violations carry higher fines and potential license suspension

Seat Belt Law (625 ILCS 5/12-603.1)

Illinois requires seat belt use for all vehicle occupants. However, seat belt non-use is not admissible as evidence of negligence in a personal injury case. The other side cannot argue that your failure to wear a seat belt contributed to your injuries or should reduce your compensation.

Joint and Several Liability (735 ILCS 5/2-1117)

In cases with multiple defendants, Illinois applies a modified joint and several liability rule:

A defendant who is 25% or more at fault can be held jointly and severally liable for all of the plaintiff’s medical expenses
For non-economic damages (pain and suffering), each defendant is liable only for their proportionate share
This is particularly relevant in multi-vehicle accidents or cases involving both a driver and a commercial entity (trucking company, employer)

Example: In a three-car pileup, if Driver B is 30% at fault and your medical bills are $200,000, Driver B can be held responsible for the entire $200,000 in medical expenses (joint and several), even though other defendants share fault. For pain and suffering, Driver B pays only their 30% share.

Wrongful Death (740 ILCS 180)

Illinois wrongful death claims can be filed by the personal representative of the deceased’s estate. Recoverable damages include:

Loss of financial support
Loss of companionship, guidance, and society
Grief and sorrow of surviving family members
Medical and funeral expenses

The statute of limitations is 2 years from the date of death.

How Comparative Fault Works With Multiple Defendants

In accidents involving more than two parties, Illinois’s 50% bar applies to each plaintiff’s total fault, not just their fault relative to any single defendant.

Example — Three-Car Accident:

Driver A (plaintiff): 45% at fault
Driver B: 35% at fault
Driver C: 20% at fault

Driver A can recover because their fault (45%) is below 50%. Recovery: $55,000 on a $100,000 claim (reduced by 45%).

If Driver A’s fault were shifted to 50%, they would recover nothing — even though they are less at fault than the combined fault of Drivers B and C.

How Illinois Compares to Other States

Factor	Illinois	Texas	Ohio	California	New York	Florida
System	Fault	Fault	Fault	Fault	No-fault	No-fault
Comparative fault	Modified 50%	Modified 51%	Modified 51%	Pure	Pure	Modified 51%
PI SOL	2 years	2 years	2 years	2 years	3 years	2 years
PD SOL	5 years	2 years	2 years	3 years	3 years	4 years
Min BI	25/50	30/60	25/50	30/60	25/50	N/A
Min PD	$20,000	$25,000	$25,000	$15,000	$10,000	$10,000
Report threshold	$1,500	$1,000	$1,000	$1,000	$1,001	$500
PIP required	No	No	No	No	Yes	Yes
UM/UIM required	Yes	No	No	Offered	Yes	No

Key Illinois Distinctions

Stricter fault bar (50%) than Texas, Ohio, and Florida (51%)
Longest PD statute of limitations (5 years) among all major states
Highest reporting threshold ($1,500) — most states use $500-$1,000
UM/UIM automatically included unless specifically rejected in writing
Dram Shop Act provides additional recovery source against alcohol-serving establishments
No PIP — medical bills go through fault-based channels

Recent Law Changes Affecting Illinois Drivers

2023: Comparative Fault Change (Public Act 102-0489)

The most significant change in recent Illinois accident law. The comparative fault rule shifted from modified 51% to modified 50%, meaning a 50/50 fault split now results in zero recovery for both parties. This change made Illinois’s rule as strict as Georgia’s.

Ongoing: Minimum Coverage Discussions

As of 2026, Illinois maintains its 25/50/20 minimum requirements. Legislative discussions about increasing these minimums have occurred but no enacted changes have been confirmed. Illinois’s minimums are slightly below the median among the states covered on this site.

Looking Ahead

Key areas to watch include:

Potential minimum coverage increases to match states like Texas (30/60/25) or California (30/60/15)
Distracted driving penalty enhancements
Possible changes to the Dram Shop Act regarding social host liability

Frequently Asked Questions

What changed about Illinois’s comparative fault rule in 2023?

Illinois shifted from a modified 51% bar to a modified 50% bar under Public Act 102-0489. The practical effect: at exactly 50% fault, plaintiffs can no longer recover damages. Before 2023, a plaintiff at 50% fault could still recover 50% of their damages. This makes Illinois’s rule as strict as Georgia’s.

How long do I have to file a lawsuit in Illinois?

2 years for personal injury (735 ILCS 5/13-202) and 5 years for property damage (735 ILCS 5/13-205). The 5-year PD deadline is the longest among all major states. Government entity claims have a shorter 1-year deadline. Dram Shop claims have a 1-year deadline.

Does Illinois require PIP insurance?

No. Illinois is a traditional fault/tort state with no PIP requirement. Medical bills are covered through the at-fault driver’s liability insurance, your health insurance, optional MedPay, or UM/UIM coverage. MedPay is particularly important in Illinois as a no-fault source of medical coverage.

Do I automatically have UM/UIM coverage in Illinois?

Most likely, yes. Illinois law requires insurers to include UM/UIM coverage matching your liability limits in your policy. It is automatically included unless you specifically rejected it in writing. Check your declarations page to confirm your coverage levels.

What if a bar served the drunk driver who hit me?

Illinois’s Dram Shop Act (235 ILCS 5/6-21) may allow you to sue the bar, restaurant, or liquor store that served the intoxicated driver. The establishment must have served the person when they were visibly intoxicated. Dram Shop claims have a 1-year statute of limitations — shorter than the 2-year PI deadline. This is a critical deadline to watch.

Why is the reporting threshold $1,500?

Illinois has the highest reporting threshold among all major states. Accidents with less than $1,500 in property damage and no injuries do not legally require a report to IDOT. However, a police report is still strongly recommended for any accident. Without independent documentation, the insurance claims process becomes significantly more difficult.

How does joint and several liability work in Illinois?

A defendant who is 25% or more at fault can be held jointly and severally liable for all of the plaintiff’s medical expenses. This means in a multi-party accident, one defendant can be required to pay the full amount of medical bills even if other parties share fault. For non-economic damages (pain and suffering), each defendant pays only their proportionate share.

What if the other driver has no insurance?

Your UM (Uninsured Motorist) coverage is your primary protection. Illinois automatically includes UM/UIM coverage matching your liability limits unless you rejected it in writing. If you have UM coverage, your own insurer pays for your injuries as if they were the at-fault driver’s insurer. You can also sue the uninsured driver directly, though collecting may be difficult.

Can I file a claim against the city or state if road conditions caused my accident?

Yes, but the deadline is 1 year under the Local Governmental and Governmental Employees Tort Immunity Act — half the standard 2-year PI deadline. You must demonstrate that the government entity was negligent in maintaining the road. Claims can include inadequate signage, dangerous potholes, faulty traffic signals, and other maintenance failures.

Related Guides

Get Help With Your Illinois Claim

If you were in a car accident in Illinois and need legal guidance, a local attorney can evaluate your case at no cost. Most personal injury lawyers work on contingency — you pay nothing unless they recover money for you.

Common Mistakes Illinois Drivers Make After a Car Accident

Navigating the aftermath of a car accident in Illinois can be complex, especially given the state’s specific fault rules and deadlines. Understanding common missteps can help drivers protect their potential for recovery.

Failing to report the accident within the state’s deadline — Illinois law generally requires drivers to report accidents involving more than ,500 in property damage or any personal injury to the Illinois Department of Transportation (IDOT) within 10 days. Missing this deadline can complicate insurance claims and legal proceedings.
Admitting fault at the scene — In Illinois’s 50% bar modified comparative fault system, any statement admitting fault can significantly reduce or even eliminate your ability to recover damages if you are found to be 50% or more responsible for the crash. It is often advisable to stick to factual observations without assigning blame.
Delaying medical evaluation — Even if injuries seem minor, delaying medical attention can make it more challenging to link those injuries directly to the accident. This can impact a personal injury claim, especially with Illinois’s 2-year statute of limitations for personal injury.
Not thoroughly documenting the scene — As a fault state, Illinois places the burden on the victim to prove the other driver’s negligence. Failing to gather evidence such as photos, witness contact information, and police report details can weaken a claim for damages.
Ignoring the personal injury statute of limitations — Illinois has a strict 2-year statute of limitations for personal injury claims arising from car accidents. Waiting too long to file a lawsuit typically means losing the legal right to pursue compensation, regardless of the merits of the case.
Misunderstanding Illinois’s 50% bar modified comparative fault rule — Many drivers are unaware that if they are found to be 50% or more at fault for an accident, they are barred from recovering any damages in Illinois. This rule makes understanding and proving fault critically important for any claim.

Frequently Asked Questions About Car Accident Laws in Illinois

What is Illinois’s fault rule for car accidents?

Illinois operates under a 50% bar modified comparative fault rule. This means that a driver can recover damages from an at-fault party as long as their own percentage of fault for the accident is less than 50%. If a driver is found to be 50% or more responsible for the collision, they are generally barred from recovering any compensation.

How long do I have to file a personal injury lawsuit after an accident in Illinois?

In Illinois, the statute of limitations for filing a personal injury lawsuit related to a car accident is generally 2 years from the date of the crash. It is important to consider this deadline, as failing to file within this timeframe typically results in the loss of the right to pursue a claim for damages.

What are the minimum car insurance requirements in Illinois?

Illinois law mandates minimum liability insurance coverage of 25/50/20. This translates to ,000 for bodily injury per person, ,000 for total bodily injury per accident, and ,000 for property damage per accident. These minimums are designed to ensure drivers have some financial responsibility for accidents they cause.

Is Illinois a no-fault state?

No, Illinois is not a no-fault state; it operates under a traditional fault-based system. This means that the driver who is determined to be at fault for an accident is generally responsible for covering the damages and injuries of the other parties involved. Unlike no-fault states, Illinois does not require drivers to carry Personal Injury Protection (PIP) coverage.

When Professional Help Tends to Make Sense

Most minor accidents in Illinois are resolved between the drivers and their insurance companies without ever involving an attorney. Many accident victims, however, consider consulting an attorney when one or more of the following applies to their situation:

A fatality occurred, or a wrongful-death claim may be involved
Medical bills are already in the tens of thousands of dollars, or still growing
There is a permanent injury, visible scar, or any sign of traumatic brain injury (TBI)
The insurance company’s first settlement offer feels far below your actual costs
The insurance company is arguing that your injuries are pre-existing, or trying to shift primary fault onto you despite the evidence
Multiple vehicles or multiple parties are involved and liability is unclear
Fault is disputed — especially relevant given Illinois’s 50% bar modified comparative fault rule (any plaintiff 50% or more at fault recovers nothing)
The Illinois statute of limitations for personal injury (2 years from the accident) is within six months
A government vehicle, commercial truck, or rideshare driver is involved
The other driver was uninsured, underinsured, or fled the scene (hit-and-run)

If none of these apply to your situation, you may be able to settle directly with the insurance company. The other guides on this site walk through that process step by step.

Speak with a Free Car Accident Attorney

Reviewed by TurnYourClaim Editorial Team — Last verified: 2026-03-03

Sources: 735 ILCS 5/2-1116 (Comparative Fault); 625 ILCS 5/7-601 (Financial Responsibility); Public Act 102-0489 (2023 Comparative Fault Amendment); IDOT Crash Data

DISCLAIMER: This website is not a law firm and does not provide legal advice. This page provides general educational information only. Laws change frequently, and this information may not reflect the most current legal developments. Always consult a licensed attorney in your state for advice specific to your situation. Last updated: May 2026.