Wisconsin car accident laws treat the at-fault driver as financially responsible for the crash, apply a modified comparative negligence rule that cuts off recovery if you were more than 50% to blame, require every registered vehicle to carry liability and uninsured motorist insurance, and give you three years to file most injury lawsuits. The rules below cover what you have to do at the scene, when you must report, how fault is sorted out, what coverage is mandatory, and the deadlines and caps that shape any claim.
Duties at the Scene
If you’re in a crash that causes injury, death, or property damage, Wisconsin law requires you to stop immediately at the scene or as close as you safely can. You then have to give your name, address, and vehicle registration number to the other driver or anyone struck, and show your driver’s license if asked. When someone is hurt, you must offer reasonable assistance, which includes arranging a ride to the hospital if treatment looks necessary or the injured person requests it.
Hit an unattended car? You either track down the owner or leave a written note somewhere visible on the vehicle with your name, address, and a short description of what happened. The same approach applies if you damage roadside property like a fence or guardrail.
Leaving without doing these things carries real consequences. A hit-and-run with no injury can bring a fine of $300 to $1,000 and up to six months in jail. If the crash caused injury short of great bodily harm, the fine climbs to $10,000 and jail to nine months. Great bodily harm makes it a Class I felony.1Wisconsin State Legislature. Wisconsin Code 346.74 – Penalty for Violating Sections 346.67 to 346.73
When You Must Report the Crash
Not every minor collision has to be reported. Wisconsin requires you to notify local law enforcement by the quickest means available when a crash results in any of the following:2Wisconsin State Legislature. Wisconsin Code 346.70 – Duty to Report Accident
- Injury or death.
- Property damage of $1,000 or more to any one person’s property, including vehicles.
- Damage of $200 or more to state or municipally owned property other than government vehicles.
If the responding officer doesn’t file the report, you have to. The Wisconsin Driver Report of Crash goes to the Department of Transportation within 10 days of the accident and can be submitted through the DOT’s online portal.3Wisconsin Department of Transportation. Crash Reporting You’ll need the other driver’s full name, license number, insurance details, and the VIN of each vehicle. Skipping a required report can cost $200 to $500 for a first offense and $300 to $500 for a second within a year.1Wisconsin State Legislature. Wisconsin Code 346.74 – Penalty for Violating Sections 346.67 to 346.73
How Fault and Recovery Work
Wisconsin follows modified comparative negligence. You can recover from another driver only if your share of the fault does not exceed theirs. Cross 50%, and you collect nothing.4Wisconsin State Legislature. Wisconsin Code 895.045 – Contributory Negligence
At or below that line, your recovery is reduced by your percentage of blame. A $100,000 award with a 30% fault finding against you pays out $70,000. The reduction hits every category: medical bills, lost wages, pain and suffering.
One wrinkle people miss: your negligence is weighed separately against each defendant, not against all of them combined. In a multi-car crash you might recover from one driver and be barred against another, depending on how fault lines up with each one.4Wisconsin State Legislature. Wisconsin Code 895.045 – Contributory Negligence
How much any single defendant has to pay also depends on their share. A defendant whose causal negligence is under 51% owes only their proportional slice. A defendant at 51% or more is jointly and severally liable, meaning you can pursue them for the full award even if other defendants can’t pay.
Required Insurance Coverage
Every vehicle registered in Wisconsin must carry liability insurance at these minimums:5Wisconsin State Legislature. Wisconsin Code 344.33 – Motor Vehicle Liability Policy Defined
- $25,000 for bodily injury or death of one person per accident.
- $50,000 for bodily injury or death of two or more people per accident.
- $10,000 for property damage per accident.
Every auto policy must also include uninsured motorist coverage, with minimums of $25,000 per person and $50,000 per accident for bodily injury.6Wisconsin State Legislature. Wisconsin Code 632.32 – Insurance Policy Provisions That coverage pays when the at-fault driver has no insurance at all.
Underinsured motorist coverage, which fills the gap when the at-fault driver’s policy isn’t large enough, is not required. Your insurer has to offer it, and you can turn it down. If you buy it, the minimum limits are $50,000 per person and $100,000 per accident.7Office of the Commissioner of Insurance. Frequently Asked Questions – Automobile Insurance Given how low the state’s liability minimums sit, UIM is worth a serious look.
Deadlines to File a Claim
Miss a deadline and an otherwise strong claim is gone. The core windows:
Personal Injury and Property Damage
You have three years from the date of the accident to file suit for personal injuries from a vehicle crash,8Wisconsin State Legislature. Wisconsin Code 893.54 – Injury to the Person and the same three years for property damage.9Wisconsin State Legislature. Wisconsin Code 893.52 – Action for Damages for Injury to Property Three years sounds like plenty until you add up treatment time, insurer negotiations, and evidence gathering.
Wrongful Death
When a crash is fatal, the deadline for a wrongful death lawsuit is two years from the date of death, a full year shorter than the injury deadline.8Wisconsin State Legislature. Wisconsin Code 893.54 – Injury to the Person
Claims Against a Government Entity
If the crash involved a government vehicle or a public employee acting in an official capacity, you have to serve a written notice of claim on the government body within 120 days of the accident, before any lawsuit.10Wisconsin State Legislature. Wisconsin Code 893.80 – Claims Against Governmental Bodies The notice has to describe the circumstances, give your address, and state the relief you want. A court can still let the claim proceed after a late notice, but only if the government had actual notice and wasn’t prejudiced. That’s not something to rely on.
Limits on What You Can Recover
Wrongful Death
Wisconsin does not cap economic damages in wrongful death cases. Medical bills before death, funeral expenses, and lost future earnings have no statutory ceiling. The cap applies only to non-economic damages for loss of society and companionship:11Wisconsin State Legislature. Wisconsin Code 895.04 – Plaintiff in Wrongful Death Action
- $350,000 per occurrence for the death of an adult.
- $500,000 per occurrence for the death of a minor.
Those caps cover the combined recovery of all eligible family members, including a spouse, children, parents, and siblings who were minors at the time of death. If a jury award exceeds the cap, the judge must reduce it. Comparative negligence applies first: if the deceased was partly at fault, the non-economic award is reduced by that percentage before the cap is applied.
Punitive Damages
Punitive damages are capped at $200,000 or twice your compensatory damages, whichever is greater.12Wisconsin State Legislature. Wisconsin Code 895.043 – Punitive Damages One exception matters in crash cases: the cap doesn’t apply when the defendant was driving under the influence of an intoxicant. A drunk driver who causes serious injury faces uncapped punitive exposure.