Wisconsin Personal Lines Law & Coverage Rules
This chapter covers the Wisconsin-specific personal lines rules that sit on top of the shared national property & casualty fundamentals: who regulates insurance in Wisconsin, the minimum auto liability limits, the mandatory uninsured motorist coverage plus offered UIM/med-pay, the state's tort system, and the notice rules governing cancellation and nonrenewal. Figures below were checked against the Wisconsin Office of the Commissioner of Insurance this session; always confirm current numbers before advising a client.
The Wisconsin Office of the Commissioner of Insurance
Insurance in Wisconsin is regulated by the Office of the Commissioner of Insurance (OCI), led by an appointed Commissioner of Insurance. The OCI licenses producers and companies, reviews policy forms and rates, investigates complaints, and enforces the insurance code. There is no federal insurance department. Official site: https://oci.wi.gov.
Minimum Auto Liability Limits (25/50/10) and UM/UIM
To satisfy Wisconsin's financial-responsibility law, a personal auto policy must carry at least $25,000 bodily injury per person, $50,000 bodily injury per accident, and $10,000 property damage (written 25/50/10). Wisconsin also mandates uninsured motorist bodily injury coverage of at least 25/50, and requires insurers to offer underinsured motorist and medical payments coverage, which the insured may accept or reject. Verify current figures with the Wisconsin Office of the Commissioner of Insurance.
Tort (At-Fault) System
Wisconsin is a traditional tort (at-fault) state: the driver who causes a crash — and that driver's liability insurer — is responsible for the other party's injuries and property damage. Wisconsin is not a no-fault state and does not use a full-tort/limited-tort election. Confirm current rules with the Wisconsin Office of the Commissioner of Insurance.
Cancellation and Nonrenewal
State law limits the reasons an insurer may cancel a personal auto or homeowners policy mid-term (for example nonpayment or material misrepresentation) and requires advance written notice of cancellation or nonrenewal. The exact number of days depends on the reason and line — verify current Wisconsin notice periods with the Office of the Commissioner of Insurance rather than memorizing a single number.