Car insurance claims in Wisconsin

Fault rules, deadlines, insurer response times, minimum coverage and the regulator for car insurance claims in Wisconsin, with every rule cited to its source.

Verified as of September 11, 2026

Fault system At-fault (tort)
Shared-fault rule Modified comparative (51% bar) Contributory negligence does not bar recovery «if that negligence was not greater than the negligence of the person against whom recovery is sought», with damages «diminished in the proportion to the amount of negligence attributed to the person recovering» — and then the decisive sentence: «The negligence of the plaintiff shall be measured separately against the negligence of each person found to be causally negligent» (Wis. Stat. § 895.045(1)). A claimant at exactly 50 % still recovers half. The 51 % figure in the same subsection is a different rule entirely: a defendant at 51 % or more is jointly and severally liable for the whole award, while one below that pays only its own share. It is not a bar on the claimant.
Deadline to sue for vehicle damage 3 years from the accident [2] Three years, not the six that governs property generally, because § 893.52(2) carves out an action «to recover damages for an injury to real or personal property that are caused or sustained by, or that arise from, an accident involving a motor vehicle». Publishing six would be wrong by double. The period runs from accrual «or be barred», and the section fixes no accrual rule.
Deadline to sue for injury 3 years from the accident [2] Three years for an action to recover damages for injuries to the person, «including an action to recover damages for injuries to the person caused or sustained by or arising from an accident involving a motor vehicle» (Wis. Stat. § 893.54(1m)(a)) — the statute names the motor case expressly, so no interpretive step is needed. A wrongful-death claim arising from a motor vehicle accident is shorter: two years (§ 893.54(2m)), against three years for other wrongful-death claims, and shorter than the injured survivor’s own period for the same crash.
Deadline to sue your own insurer 3 years from the accident [2] Three years, not the general six: «An action upon a motor vehicle insurance policy described in s. 632.32(1) shall be commenced within 3 years after the cause of action accrues or be barred» — and the accrual rule removes the usual trap, because «a cause of action involving underinsured motorist coverage … or uninsured motorist coverage … accrues on the date there is final resolution of the underlying cause of action by the injured party against the tortfeasor» (Wis. Stat. § 893.43(2)). The policy cannot shorten it: no insurance policy may «limit the time for beginning an action on the policy to a time less than that authorized by the statutes», prescribe the court, or provide that no action may be brought (§ 631.83(3)(a)–(c)). You must, however, wait — no action to compel payment may be brought until at least sixty days after proof of loss (§ 631.83(4)).
Insurer response deadlines — Acknowledge the claim 10 days from the claim [8] Consecutive days — the rule’s own word, so calendar days — because the administrative rule requires insurers to acknowledge communications and provide forms «promptly» and then defines the word: «the terms “prompt” and “promptly” as used in this rule shall mean responsive action within 10 consecutive days from receipt of a communication concerning a claim» (Wis. Admin. Code § Ins 6.11(4)). Two limits travel with it: the definition is expressly subordinate, «except where a different period is specified by statute or rule», and § Ins 6.11(3)(a) bites only on conduct «without just cause and performed with such frequency as to indicate general business practice». Wisconsin has no decision clock at all — the duty to affirm or deny coverage is stated only as «within a reasonable time after proof of loss has been completed» (§ Ins 6.11(3)(a)7.), with no day count anywhere in the chapter.
Minimum liability coverage Bodily injury, per person $25,000 · Bodily injury, per accident $50,000 · Property damage $10,000 [1] $25,000 for bodily injury to or death of one person, $50,000 for two or more, $10,000 for injury to or destruction of the property of others in any one accident (Wis. Stat. § 344.33(2)(a)–(c), corroborated from the security-deposit side at § 344.15(1)). Neither section prints an effective date or a superseded tier, so the amounts are published without a date rather than with an inferred one. The property-damage figure is a tenth of the per-person injury limit, and it is what a minimally insured driver brings to the table when a car is written off.
Diminished value recoverable Not yet verified
Uninsured / underinsured motorist cover Mandatory
Regulator Office of the Commissioner of Insurance
  1. Wisconsin Statutes, chapter 344 (Financial Responsibility) — §§ 344.62, 344.33, 344.15, § 344.62(1)–(2); § 344.33(2)(a)–(c); § 344.15(1) — verified as of 2026-09-12
  2. Wisconsin Statutes, chapter 893 (Limitations) — §§ 893.54, 893.52, 893.43, § 893.54(1m)(a), (2m); § 893.52(1)–(2); § 893.43(1)–(2) — verified as of 2026-09-12
  3. Wisconsin Statutes, chapter 895 — § 895.045 (contributory negligence), § 895.045(1) — verified as of 2026-09-12
  4. Wisconsin Statutes, chapter 631 — § 631.83 (prohibited policy clauses; waiting period), § 631.83(1)(d), (3)(a)–(c), (4) — verified as of 2026-09-12
  5. Wisconsin Statutes, chapter 628 — § 628.46 (timely payment of claims), § 628.46(1)–(3) — verified as of 2026-09-12
  6. Wisconsin Statutes, chapter 632 — § 632.32 (provisions of motor vehicle insurance policies), § 632.32(1), (2)(at), (2)(bh), (4)(a)1.–2., (4)(bc), (4)(c), (4m)(a)–(e) — verified as of 2026-09-12
  7. Wisconsin Statutes, chapter 346 — § 346.70 (duty to report accident), § 346.70(1), the NOTE printing the text as amended eff. 1-4-27 by 2025 Wis. Act 196, and (2)–(3) — verified as of 2026-09-12
  8. Wisconsin Administrative Code, ch. Ins 6 — § Ins 6.11 (insurance claim settlement practices), § Ins 6.11(1), (3)(a)1.–3., 7., 11., (3)(b), (4), (5) — verified as of 2026-09-12
  9. Office of the Commissioner of Insurance — department homepage, Homepage — verified as of 2026-09-12
  10. Office of the Commissioner of Insurance — Types of Complaints, Page headings and body; the page’s own «Last Updated: May 20, 2026» — verified as of 2026-09-12

Wisconsin runs on fault and compels a liability policy, not a benefits scheme. No person may operate a motor vehicle on a highway in the state unless the owner or operator «has in effect a motor vehicle liability policy with respect to the vehicle being operated», and must carry proof while driving (§ 344.62(1)–(2)); if that proof is shown on a phone, producing it «is not considered consent for the traffic officer to view any content on the telephone or other device except the proof required». The compulsory limits are 25/50/10, and that property-damage figure deserves a second look: it is a tenth of the per-person injury limit. The only first-party benefit any policy must contain is medical payments coverage of at least $1,000 per person, and a named insured may reject even that (§ 632.32(4)(a)2., (bc)) — far too small and too optional to describe as a no-fault layer.

Sharing the blame reduces the award, and Wisconsin measures it in a way that quietly favours a claimant facing several defendants: the claimant’s negligence is «measured separately against the negligence of each person found to be causally negligent», one to one rather than against the defendants added together (§ 895.045(1)). A claimant 30 percent at fault suing two defendants at 35 percent each recovers from both. The 51 percent in the same subsection does different work: a defendant below it pays only its own share, while one at 51 percent or more is jointly and severally liable for the whole award.

The court deadlines are where Wisconsin rewards precision, because 2015 Wisconsin Act 133 pulled every motor-vehicle period down and left the general ones alone. Injury is three years, damage to the car is three years and not the general six, a wrongful-death claim from a crash is two years, and an action on the policy itself is three years and not six — with the uninsured and underinsured motorist clock not starting until the case against the at-fault driver is finally resolved. Better still, the policy cannot shorten any of it (§ 631.83(3)(a)), which is the question several neighbouring states leave open.

On the insurer’s side Wisconsin has an acknowledgement clock and a payment clock and no decision clock, and it is worth knowing which is which. The administrative rule defines «prompt» as ten consecutive days from receipt of a communication about a claim. The statutory payment rule provides that a claim «shall be overdue if not paid within 30 days after the insurer is furnished written notice of the fact of a covered loss and of the amount of the loss», that any partial amount supported by written notice is separately overdue on the same thirty days, and that «all overdue payments shall bear simple interest at the rate of 7.5 percent per year» (§ 628.46(1)–(2)) — but that section confines itself by its own subsection (3) to the classes of claims enumerated in s. 646.31(2), and whether a private passenger motor vehicle claim is within those classes has not yet been verified against a primary text, so no payment period is stated as a field on this page. On cover, uninsured motorist protection is compulsory at $25,000 per person and $50,000 per accident — the statute says every policy «shall contain» it and gives no right to reject — and Wisconsin defines in statute the case that usually goes unnamed: a «phantom motor vehicle» is one that makes no physical contact with you and whose driver and owner cannot be identified (§ 632.32(2)(bh), (4)(a)1.). Underinsured motorist coverage is a different animal: the insurer must offer it once in writing, acceptance or rejection «need not be in writing», and «the absence of a premium payment for underinsured motorist coverage is conclusive proof that the person has rejected such coverage» — so it is lost by not buying it, and a rejection binds everyone on the policy and rides every renewal unless someone asks in writing; bought, it must be written at $50,000 per person and $100,000 per accident (§ 632.32(4m)). Finally, reporting: notice to police is required immediately, by the quickest means, where anyone is injured or killed, where government property is damaged to an apparent extent of $200 or more, or where total damage to property owned by any one person reaches an apparent extent of $1,000 or more — and «injury» means needing first aid or a doctor’s attention, «whether or not first aid or medical or surgical treatment was actually received» (§ 346.70(1)). Unless a law enforcement agency reports it, the driver must also forward a written report to the department within ten days (§ 346.70(2)).

File a complaint: Office of the Commissioner of Insurance →

Frequently asked questions

How long do I have to sue for injuries after a car accident in Wisconsin?

3 years from the accident (Wisconsin Statutes, chapter 893 (Limitations) — §§ 893.54, 893.52, 893.43 — Three years for an action to recover damages for injuries to the person, «including an action to recover damages for injuries to the person caused or sustained by or arising from an accident involving a motor vehicle» (Wis. Stat. § 893.54(1m)(a)) — the statute names the motor case expressly, so no interpretive step is needed. A wrongful-death claim arising from a motor vehicle accident is shorter: two years (§ 893.54(2m)), against three years for other wrongful-death claims, and shorter than the injured survivor’s own period for the same crash.).

Is Wisconsin an at-fault or no-fault jurisdiction?

At-fault (tort). Shared-fault rule: Modified comparative (51% bar).

Who do I complain to about an insurer in Wisconsin?

Office of the Commissioner of Insurance (https://oci.wi.gov/Pages/Consumers/Types-of-Complaints.aspx).