State service guide

Wisconsin DUI laws: OWI and PAC split, short BAC-suspension deadlines, and mandatory IID for repeat cases

Wisconsin officially calls impaired driving OWI, and a good Wisconsin DUI page has to separate three different lanes that generic summaries blur together: the OWI or PAC case itself, the six-month administrative suspension that follows a prohibited-alcohol-concentration test result, and the separate refusal revocation process under implied consent. The current practical rules are specific. Most drivers use a 0.08 PAC threshold, commercial drivers use 0.04, first-offense OWI is usually a forfeiture with a 6-to-9-month revocation rather than jail, and repeat cases escalate quickly into mandatory confinement, longer revocations, IID requirements, and eventually felony exposure and possible lifetime revocation.

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Alcohol thresholds Wisconsin generally uses 0.08 PAC, 0.04 for commercial drivers, and 0.02 for fourth-and-later offenders and drivers under IID orders
BAC suspension review deadline A request to review the Notice of Intent to Suspend must be postmarked within 10 business days if handed to you at the stop, or within 13 business days from the notice date if it was mailed
Refusal hearing deadline A first chemical-test refusal triggers a 1-year revocation, and the written hearing request must be received by the court within 10 days of the notice date
IID trigger Wisconsin courts order IID for repeat offenders, first offenders at 0.15 or more, and anyone who refuses a chemical test

Overview

What this page helps you verify

A strong Wisconsin DUI page should be written as an OWI page and should not flatten everything into one national penalty chart. The official Wisconsin sources separate impairment-based OWI and prohibited-alcohol-concentration enforcement, distinguish the BAC administrative suspension from a refusal revocation, apply different alcohol thresholds to commercial drivers and repeat offenders, and add separate under-21 absolute-sobriety rules. The other major Wisconsin-specific point is that IID and occupational-license timing are operationally important from the start, not just after sentencing.

Last reviewed: 2026-05-18. This page was manually upgraded against service-specific official sources, but requirements can still change quickly.

Usually needed

Documents and information to prepare

  • The OWI, PAC, refusal, or restricted-controlled-substance citations issued at the stop
  • The Notice of Intent to Suspend and Administrative Review Request form if the case involves a prohibited-alcohol-concentration suspension
  • The Notice of Intent to Revoke and court-hearing instructions if the case involves a refusal under implied consent
  • Court records or the conviction status report showing the offense level, revocation period, and any IID order
  • Intoxicated Driver Program assessment and Driver Safety Plan records if you need an occupational license or reinstatement after repeat alcohol-related cases

Typical flow

What the process often looks like

  1. Separate the Wisconsin problem first: OWI or PAC charge, BAC administrative suspension, refusal revocation, and under-21 alcohol case are related but not identical issues.
  2. Act on the short review or hearing deadlines immediately, because Wisconsin gives only days, not months, to challenge the BAC suspension or refusal revocation.
  3. Check the threshold and repeat-offense lane carefully by looking at vehicle type, alcohol concentration, age, IID status, and the timing of prior alcohol-related offenses.
  4. Plan the return-to-driving path separately from the court case by checking occupational-license waiting periods, IID requirements, and any IDP assessment or Driver Safety Plan obligations.

OWI, PAC, and substances

Wisconsin's core split is between impaired-driving OWI and prohibited-alcohol-concentration enforcement

That is the first place a reviewed Wisconsin page should be more precise than the benchmark.

  • WisDOT's OWI page says Wisconsin uses the term OWI in its statutes rather than DUI.
  • The same page says a driver can violate Wisconsin law by being impaired by alcohol or drugs, by having an alcohol concentration above the legal limit, or by having a detectable amount of a restricted controlled substance in the blood.
  • Wisconsin's current official threshold summary uses 0.08 for most first, second, and third offenders, 0.04 for a driver operating a commercial vehicle, and 0.02 for drivers with three or more prior OWI convictions and for drivers subject to an IID order.

Front-end license actions

Wisconsin runs separate BAC-suspension and refusal tracks before the OWI case is fully resolved

Those early deadlines are the practical state-specific trap.

  • WisDOT's first-offense page says a Notice of Intent to Suspend starts a six-month administrative suspension 30 days from the notice date after a prohibited-alcohol-concentration test result.
  • WisDOT's administrative-review page says the BAC-suspension review request must be postmarked within 10 business days if the notice was handed to you at the stop, or within 13 business days from the notice date if it was mailed.
  • If you refuse the chemical test, WisDOT says you receive a Notice of Intent to Revoke for a one-year first-refusal revocation, and the written hearing request must be received by the court within 10 days of the notice date.
  • WisDOT also notes that a refusal may still lead to a search warrant for a blood draw, so refusal does not necessarily stop chemical evidence from being gathered.

Penalty ladder

Wisconsin's OWI ladder becomes much harsher once the case is no longer a true first offense

The current WisDOT penalty chart is more specific than a generic first-second-third summary.

  • WisDOT's October 1, 2023 penalty chart lists a first-offense OWI at a $150 to $300 forfeiture plus surcharge, no confinement, and a 6-to-9-month revocation.
  • A second OWI with a prior OWI within 10 years rises to 5 days to 6 months of confinement and a 12-to-18-month revocation plus confinement length, while a third OWI rises to 45 days to 1 year and a 2-to-3-year revocation plus confinement length.
  • By the fourth offense, Wisconsin's PAC line drops to 0.02 and the chart treats the offense as a Class H felony with 60 days to 6 years of confinement.
  • The same official chart says the period between alcohol-related offenses is measured violation date to violation date, which matters for repeat-offense classification.

IID and occupational driving

Wisconsin treats IID as a core operating-privilege restriction, not as an optional add-on

This is the main restoration rule users need to understand early.

  • WisDOT's penalty chart says courts enter IID orders on any repeat offender, any first offender with a BAC of 0.15 or more, and any person who refuses a chemical test.
  • WisDOT's IID page says the IID time requirement starts only once a Wisconsin driver license or occupational license is issued, which means the requirement cannot simply be waited out while not driving.
  • WisDOT's occupational-license page says many Wisconsin alcohol cases still allow limited driving, but the waiting period changes by offense type: immediate eligibility for a first alcohol conviction or BAC suspension, 45 days for a second or later alcohol conviction, and 30, 90, or 120 days for refusal cases depending on history.
  • For drivers with two or more alcohol-related withdrawals or convictions counted under section 343.307(1), Wisconsin says occupational-license eligibility also requires assessment compliance, a Driver Safety Plan, and proof of IID installation.

Under 21 and lifetime-revocation edges

Wisconsin also has a separate not-a-drop rule for under-21 drivers and a real lifetime-revocation law for serious repeat cases

Those edge cases are important enough to keep visible.

  • WisDOT's underage alcohol penalty chart says the Absolute Sobriety or Not a Drop law applies under age 21, carries a $200 fine, a 3-month suspension, and immediate occupational-license eligibility.
  • WisDOT's general OWI page separately warns that under Wisconsin's graduated-licensing rules, drivers under 21 must maintain absolute sobriety and any amount of alcohol is illegal for them.
  • WisDOT's lifetime-revocation page says permanent revocation can apply when a person has four or more countable alcohol or drug impairment-related offenses and the fourth occurs within 15 years of the previous offense.
  • The same page also says permanent revocation can apply when a person has two countable alcohol-related convictions, suspensions, or revocations within 25 years and also has two or more qualifying serious convictions, and no occupational license is available in those permanent-revocation cases.

Accuracy notes

Where people get tripped up

  • Wisconsin DUI content should be framed as OWI content and should keep the OWI or PAC case, the BAC administrative suspension, and the refusal revocation as separate legal tracks.
  • The short Wisconsin deadlines matter operationally. The BAC-suspension review uses a 10-business-day or 13-business-day postmark rule, while refusal uses a 10-day court-hearing request deadline.
  • Do not flatten Wisconsin into a simple adult 0.08-only state. Official Wisconsin materials also use 0.04 for commercial operation, 0.02 for fourth-and-later offenders and IID-restricted drivers, and an under-21 absolute-sobriety rule.
  • IID is central in Wisconsin rather than exceptional. Current official sources say repeat offenders, first offenders at 0.15 or more, and refusers all fall into the IID lane, and the clock starts only once Wisconsin issues a license.
  • Permanent revocation is a real Wisconsin edge case and should not be buried under ordinary repeat-offense summaries.

FAQ

Common questions

  • Does Wisconsin use the term DUI or OWI?

    Wisconsin's official materials use OWI, meaning Operating While Intoxicated.

  • What is the alcohol limit for OWI in Wisconsin?

    Wisconsin generally uses 0.08 for most drivers, 0.04 for someone operating a commercial vehicle, and 0.02 for fourth-and-later offenders and drivers under an IID order.

  • How fast do I have to challenge a Wisconsin BAC suspension?

    WisDOT says the administrative-review request must be postmarked within 10 business days if the notice was handed to you at the stop, or within 13 business days from the notice date if it was mailed.

  • What happens if I refuse the chemical test in Wisconsin?

    WisDOT says a first refusal brings a 1-year revocation and the written hearing request must be received by the court within 10 days of the notice date.

  • When does Wisconsin require an ignition interlock device?

    Wisconsin's official penalty chart says courts order IID for repeat offenders, any first offender with a BAC of 0.15 or more, and any person who refuses a chemical test.

Sources

Official references used for this page

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