Wisconsin OWI Laws Explained

By Javier Marín, Editor·Last reviewed September 2026·How we check this

Wisconsin uses the term OWI — Operating While Intoxicated — under Wisconsin Statutes §346.63, not DUI or DWI. Wisconsin is the only U.S. state where a 1st-offense OWI is a non-criminal civil forfeiture, not a misdemeanor. The first conviction carries a fine and license revocation but no jail time and no criminal record. Repeat offenses — 2nd, 3rd, and beyond — are criminal misdemeanors and felonies under standard rules.

The legal threshold

Wisconsin's per-se OWI thresholds:

Adults 21+ (1st-3rd offense): 0.08% BAC.
Adults 21+ (4th+ offense): 0.02% BAC — the lowered threshold for habitual offenders.
Drivers under 21: any detectable amount of alcohol — Wisconsin's "Absolute Sobriety" rule.
Commercial drivers (CDL): 0.04% BAC.
"Intoxicated" by drugs: impairment is measured by officer observation, Standardized Field Sobriety Tests, and Drug Recognition Expert evaluations. No per-se threshold for most drugs.

Wisconsin allows convictions on either the per-se BAC or on impairment evidence alone — even below 0.08%.

Why 1st OWI is civil, not criminal

Wisconsin's 1st-offense OWI was decriminalized in the 1990s as part of a legislative compromise that increased penalties for repeat offenders. The civil forfeiture treatment means:

No jail time on a 1st conviction (criminal jail exposure begins at 2nd OWI).
No criminal record — the conviction is a civil forfeiture, like a parking ticket or speeding violation.
No constitutional jury trial right — civil forfeiture cases are decided by a Circuit Court judge.
No court-appointed counsel — defendants must hire their own attorney or proceed without one.
Lower burden of proof — the state must show the violation by a preponderance of the evidence rather than beyond a reasonable doubt.

Despite the civil treatment, the conviction goes onto the WisDOT driving record permanently, counts toward the lifetime OWI lookback, and triggers IID and SR-22 obligations. So a 1st OWI is "civil" for criminal-record purposes only — for licensing and insurance purposes, it's treated as a serious offense.

The implied consent procedure

Wisconsin's implied consent law requires drivers to submit to chemical testing on lawful demand. Refusal triggers:

1-year revocation for a 1st refusal.
2-year revocation for a 2nd refusal.
3-year revocation for a 3rd or subsequent refusal.
The refusal can also be used as evidence against the driver in the OWI case.

A driver has 10 days from arrest to request a refusal hearing — same hearing process as the criminal-civil OWI case.

1st-offense penalties (civil)

A 1st OWI conviction in Wisconsin produces:

Fine of $150-$300, plus court costs (typically $700-$1,200 total).
License revocation of 6-9 months.
Mandatory completion of an alcohol assessment (AODA) at a county-approved provider, plus compliance with the assessment-prescribed driver safety plan.
Ignition interlock device (IID) required for 1 year if BAC was 0.15% or higher (otherwise IID is at the court's discretion).
SR-22 financial responsibility filing for 3 years — see Wisconsin insurance.
6 demerit points on the WisDOT record. See Wisconsin point system.
Eligibility for an occupational license immediately to allow driving to work, school, IDP appointments, and approved errands.

2nd-offense penalties (criminal misdemeanor)

A 2nd OWI in Wisconsin is a criminal misdemeanor:

Mandatory minimum 5 days in county jail.
Fine of $350-$1,100, plus court costs.
License revocation of 12-18 months.
IID required for 1 year on every vehicle the driver operates.
Mandatory AODA assessment and IDP plan compliance.
SR-22 for 3 years.
Wisconsin's lifetime OWI lookback applies — every prior OWI counts toward enhancement, regardless of how long ago.

3rd and 4th offense (criminal)

3rd OWI: criminal misdemeanor with mandatory 45 days jail, $600-$2,000 fine, 2-3 year revocation, IID required, lifetime SR-22 in some cases.

4th OWI: criminal felony (Class H), with up to 6 years prison, $10,000 fine, 2-3 year revocation, mandatory IID, and prosecution at the 0.02% BAC threshold instead of 0.08%.

Wisconsin's lifetime lookback

Most states use a 5- or 10-year lookback for OWI/DUI sentence enhancement. Wisconsin uses a lifetime lookback — every prior OWI conviction counts forever. A driver with a 1st OWI in 1995 and a 2nd OWI in 2025 would face the full 2nd-offense criminal penalties despite the 30-year gap. The lifetime lookback applies to OWI convictions from any state, not just Wisconsin.

Aggravating factors

Penalties escalate quickly when:

BAC at or above 0.15% (mandatory IID at 1st offense).
An accident with injury or property damage (separate charges may apply).
A passenger under 16 in the vehicle (mandatory minimum jail time, separate child-endangerment exposure).
Excessive speed or reckless driving combined with the OWI.
Causing great bodily harm or homicide while OWI (felony OWI charge with substantially elevated penalties).

For reinstatement after the suspension period, see Wisconsin suspended license. For the points associated with each conviction, see Wisconsin point system.