Key Takeaways

  • Wisconsin requires minimum liability coverage of 25/50/10 for all registered vehicles
  • Uninsured motorist bodily injury coverage (25/50) is mandatory in Wisconsin
  • Wisconsin follows a tort (at-fault) system with modified comparative negligence
  • Drivers must carry proof of insurance and show it upon request by law enforcement
  • Penalties for driving without insurance include fines up to $500 and license suspension
Last updated: January 2026

Wisconsin Auto Insurance Requirements

Wisconsin law requires all drivers to maintain minimum auto insurance coverage. The state uses a traditional tort (at-fault) system for determining liability in auto accidents.

Minimum Liability Coverage: 25/50/10

Coverage TypePer PersonPer AccidentProperty Damage
Bodily Injury$25,000$50,000-
Property Damage--$10,000

What These Limits Mean

  • $25,000 Bodily Injury per Person: Maximum paid for injuries to one person
  • $50,000 Bodily Injury per Accident: Maximum paid for all injuries in one accident
  • $10,000 Property Damage: Maximum paid for damage to another person's property

Mandatory Uninsured Motorist Coverage

Wisconsin requires uninsured motorist bodily injury (UMBI) coverage:

CoverageMinimum Limits
UMBI per Person$25,000
UMBI per Accident$50,000

UMBI Coverage Protects Against

  • Accidents with uninsured drivers
  • Hit-and-run accidents
  • Underinsured motorists (with UIMBI)

Additional Coverage Options

Physical Damage Coverage (Optional)

CoverageDescription
CollisionDamage from collision with another vehicle or object
ComprehensiveDamage from theft, vandalism, weather, animals
Rental ReimbursementCost of rental car while yours is repaired
Towing/LaborRoadside assistance and towing

Medical Payments (MedPay)

  • Pays medical expenses regardless of fault
  • Covers driver and passengers
  • Optional in Wisconsin

Underinsured Motorist Coverage (UIMBI)

  • Covers when at-fault driver has insufficient limits
  • Highly recommended in Wisconsin
  • Same limits as UMBI

Exam Tip: Wisconsin requires 25/50/10 liability coverage AND 25/50 uninsured motorist bodily injury coverage. Memorize both requirements.

Test Your Knowledge

What are Wisconsin's minimum auto liability limits?

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Wisconsin Tort System

Wisconsin follows a traditional at-fault (tort) system for auto insurance, not a no-fault system.

How the Tort System Works

  1. At-fault driver responsible: The driver who caused the accident is responsible for paying damages
  2. Third-party claims: Injured parties file claims against the at-fault driver's insurance
  3. Right to sue: Injured parties can sue for damages including pain and suffering
  4. No restrictions on lawsuits: Unlike no-fault states, there are no thresholds to meet before suing

Modified Comparative Negligence

Wisconsin uses a modified comparative negligence rule (51% bar rule):

Your Fault PercentageCan You Recover?
0-50%Yes - damages reduced by your percentage of fault
51% or moreNo - you cannot recover any damages

Comparative Negligence Example

Scenario: $100,000 in damages, you are 25% at fault

  • Your recovery: $100,000 × (100% - 25%) = $75,000

Scenario: $100,000 in damages, you are 51% at fault

  • Your recovery: $0 (barred from recovery)

Joint and Several Liability

In Wisconsin:

  • Defendants less than 51% at fault: Liable only for their percentage
  • Defendants 51% or more at fault: Jointly and severally liable

Direct Action Against Insurers

Wisconsin allows injured parties to:

  • Name and sue the at-fault driver's insurance company directly
  • Include the insurer as a defendant in the lawsuit
  • Make the jury aware of insurance coverage

Statute of Limitations

Claim TypeTime Limit
Personal Injury3 years from accident
Property Damage6 years from accident

Exam Tip: Wisconsin uses a modified comparative negligence system with a 51% bar. If you are 51% or more at fault, you cannot recover any damages.

Test Your Knowledge

Under Wisconsin's modified comparative negligence rule, what happens if you are 40% at fault in an accident?

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Proof of Insurance Requirements

What Drivers Must Carry

  • Insurance identification card (paper or electronic)
  • Must show proof upon request by law enforcement
  • Electronic proof on smartphones is accepted

When Proof is Required

  • Traffic stops
  • At the scene of an accident
  • Vehicle registration renewal
  • When filing accident reports

Penalties for Driving Without Insurance

ViolationPenalty
Operating without insuranceFine up to $500
Failure to show proof at stopFine up to $10
Fraudulent proof of insuranceFine up to $5,000
Repeated violationsHigher fines, longer suspensions

Additional Consequences

  • License suspension
  • Vehicle registration suspension
  • SR-22 requirement for reinstatement
  • Difficulty obtaining future coverage

SR-22 Requirements

When SR-22 is Required

  • After driving without insurance conviction
  • After certain serious traffic violations
  • After at-fault accident while uninsured
  • DUI/DWI convictions

SR-22 Details

  • Certificate of Financial Responsibility
  • Filed by insurance company with DMV
  • Required for 3 years typically
  • Higher insurance premiums

Exam Tip: Wisconsin accepts electronic proof of insurance on smartphones. However, fraudulent proof of insurance carries a penalty of up to $5,000.

Test Your Knowledge

What is the maximum fine for operating a motor vehicle without insurance in Wisconsin?

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Test Your Knowledge

Which coverage is mandatory in Wisconsin in addition to liability insurance?

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