Wisconsin Comparative Negligence — How Shared Fault Affects Your Injury Claim

Under Wis. Stat. § 895.045(1), contributory negligence does not bar recovery as long as that negligence 'was not greater than' the negligence of the person against whom recovery is sought. In practical terms: if your fault is 50% or less, you can recover damages. If your fault reaches 51% or more, you recover nothing.

The statute uses the phrase 'not greater than' — meaning at exactly 50% fault, you can still recover. Your award is reduced by your fault percentage. So if a jury finds you 50% at fault on $200,000 in damages, you take home $100,000. At 51% fault, that drops to zero. That one percentage point is the most expensive line in Wisconsin personal injury law.

Wisconsin's threshold is a hard rule. There is no judicial discretion to award partial damages to a plaintiff who is 51% or more at fault, regardless of the severity of their injuries. This makes the fault determination — and the evidence supporting it — the most important battleground in most Wisconsin personal injury cases.

Wisconsin has a critical rule that distinguishes it from many other comparative negligence states. Under § 895.045(1), your fault is measured separately against each individual defendant — not against the combined fault of all defendants. This matters enormously in multi-party accidents.

Example: You are 40% at fault. Defendant A is 35% at fault. Defendant B is 25% at fault. In states that compare your fault to the combined total (60%), you would recover. In Wisconsin, your fault (40%) is compared individually: against Defendant A (35%), your fault is greater, so you cannot recover from A. Against Defendant B (25%), your fault is also greater, so you cannot recover from B either. You recover nothing — even though two other parties caused 60% of the harm.

This individual comparison rule can produce harsh results in multi-party cases and makes it critical to understand how fault will be allocated among all parties before deciding whether to pursue a claim. An attorney experienced in Wisconsin comparative negligence law can help assess whether the individual comparison rule works for or against you.

The math is straightforward once fault percentages are assigned. If your total damages are $100,000 and you are 0% at fault, you recover the full amount. At 20% fault, you recover $80,000. At 30% fault, $70,000. At 50% fault — the maximum allowed — $50,000. At 51% fault, nothing.

Consider a T-bone collision at a Milwaukee intersection. You entered the intersection on a yellow light. The other driver ran a red light while speeding. A jury might assign you 25% fault (entering on yellow when you could have stopped) and the other driver 75% fault (running the red while speeding). On $120,000 in damages, you recover $90,000 — your $120,000 reduced by 25%.

Now add a third vehicle whose driver was texting and failed to yield. The jury assigns you 30%, Driver A 45%, and Driver B 25%. Under Wisconsin's individual comparison rule, you compare your 30% to each defendant individually. Against Driver A (45%), your fault is less, so you can recover from A. Against Driver B (25%), your fault is greater, so you cannot recover from B. You recover only from Driver A, and your award from A is reduced by your 30% fault.

Wisconsin's comparative negligence statute includes important joint and several liability rules. Under § 895.045(1), a defendant whose causal negligence is 51% or more is jointly and severally liable — meaning they can be held responsible for the entire amount of damages (after reducing for the plaintiff's fault), even if other defendants cannot pay their share.

A defendant whose fault is less than 51% is liable only for their proportionate share. If Defendant A is 45% at fault and Defendant B is 25% at fault, and your damages are $100,000 (with 30% reduction for your fault = $70,000 recoverable), Defendant A pays only their 45% share and Defendant B pays only their 25% share. Neither is on the hook for the other's portion.

The joint and several liability threshold matters when one defendant has deep pockets (like a trucking company or large corporation) and another does not. If the well-funded defendant is 51% or more at fault, they can be required to pay the full judgment. If they are at 50% or less, they pay only their proportionate share — and if the other defendant is judgment-proof, you absorb the shortfall.

Wisconsin is a fault-based state. Fault is determined through evidence gathered during the claims process and, if the case goes to trial, by a jury. Key evidence includes police reports, witness statements, photographs, dashcam and surveillance video, vehicle damage analysis, electronic data recorder (EDR) data, and expert accident reconstruction.

Police reports are important during insurance negotiations but are generally not admissible at trial in Wisconsin because they may contain hearsay and officer opinions. Independent witness testimony — from people with no connection to either driver — tends to carry the most weight. Dashcam footage, when available, can be decisive because it provides an objective record of what happened.

Wisconsin's high rate of alcohol-involved accidents adds a common fault factor. The state consistently ranks among the top states for excessive drinking, with approximately 20% of adults reporting binge drinking according to recent CDC Behavioral Risk Factor Surveillance System data. Alcohol impairment is a significant fault factor — a driver found to be intoxicated will typically bear a large percentage of fault. However, the other driver can still be assigned partial fault for their own negligent behavior, such as speeding or failing to take evasive action.

Claims against Wisconsin government entities are subject to special rules under Wis. Stat. § 893.80. You must deliver a written notice of claim within 120 days of the injury. The notice must be sworn (notarized) and include the time, place, and circumstances of the claim. It must be properly served under Wis. Stat. § 801.11 — typically by personal delivery or certified mail to the Attorney General or the relevant government office.

Damages against Wisconsin political subdivisions, governmental agencies, and their employees acting in official capacity are capped at $50,000 per occurrence. For claims against volunteer fire companies, the cap is $25,000. Punitive damages are not available against government entities. These caps apply regardless of the actual damages you suffered.

The 120-day notice deadline is strictly enforced. Missing it bars your claim entirely, even if the 3-year statute of limitations for personal injury has not yet expired. If your accident involved a government vehicle, a road maintained by a municipality, or any government employee acting in their official capacity, consult an attorney immediately — the 120-day clock is running from the date of your injury.

Insurance adjusters in Wisconsin are trained to maximize the fault percentage assigned to you. Every percentage point they add to your fault directly reduces what they pay — and pushing you past 51% eliminates the claim entirely. On a $200,000 claim, shifting your fault from 20% to 40% saves the insurer $40,000. Shifting it to 51% saves $200,000.

Common adjuster arguments include: you were speeding (even 5 mph over the limit), you were not wearing a seatbelt, you were distracted by your phone, you did not seek medical treatment quickly enough (implying your injuries are not serious), or you made a statement at the scene that could be interpreted as admitting fault. In Wisconsin's drinking culture, adjusters will also look for any evidence that you had consumed alcohol before the accident.

Protect yourself by documenting everything immediately after the accident. Photograph the scene and all vehicles from multiple angles. Get names and phone numbers of independent witnesses. Request the police report. Save any dashcam footage. Seek medical attention the same day — even if you feel okay, because soft tissue injuries and concussions often do not produce symptoms for 24-72 hours. Do not give a recorded statement to the other driver's insurance company without legal counsel.

The strongest fault evidence is objective and created at or near the time of the accident. Scene photographs taken within minutes of the collision, dashcam footage, traffic camera video, and 911 call recordings are difficult for the other side to dispute. Electronic data recorder (EDR) data from modern vehicles provides pre-impact speed, braking force, and steering inputs — hard data that can definitively establish what each driver was doing before the collision.

Medical records play a dual role. Prompt treatment documents the link between the accident and your injuries, while gaps in treatment give the insurer room to argue that your injuries are pre-existing or not accident-related. Follow your doctor's treatment plan completely, attend every appointment, and keep records of every visit, prescription, and therapy session.

In serious or high-dispute cases, expert accident reconstruction can shift fault by 10, 20, or more percentage points. A reconstructionist analyzes physical evidence — vehicle damage, road marks, debris patterns, sight lines — to build a physics-based model of what happened. In Wisconsin's individual-comparison system, where fault percentages against each defendant are compared separately, even a small shift in the numbers can determine whether you recover anything at all.

Wondering how fault might affect your case? Get your free Injury Claim Check. You will answer a few questions about your accident and injuries, and we will provide a personalized report that includes how Wisconsin's comparative negligence rule applies to your situation, what your claim may be worth after any fault reduction, and whether connecting with a Milwaukee or Madison personal injury attorney makes sense for your case.

Insurance companies are already building their case to assign you fault. The sooner you understand where you stand, the better positioned you are to protect your claim. Free, confidential, and takes less time than waiting on hold with an insurance company.