OWI First Offense Penalties in Wisconsin in WI — Dui Legal Guide | CGMIMM

## What happens after a first-offense OWI in Wisconsin? In Wisconsin, the legal BAC limit is **0.08**. Drivers under 21 are subject to a near-zero limit. Commercial drivers are limited to 0.04. If you're charged with a first OWI, here's the framework. **Worth knowing about Wisconsin:** Wisconsin is the only state where a 1st-offense OWI is a CIVIL violation rather than a crime. There's no jail and no criminal record — but you still get the license suspension and (often) IID. ### Classification Civil traffic offense — not a crime in Wisconsin. ### Jail None — there is NO jail for a basic 1st-offense OWI in Wisconsin. ### License suspension 6–9 months. ### Ignition interlock device (IID) Required if BAC 0.15+ or for refusal. ## What aggravators do The framework above describes a basic, no-aggravator first offense. The penalties get worse — fast — when any of these are present: - **High BAC** — most states pile on extra mandatory jail and IID time once BAC crosses 0.15 or 0.20 - **Child in the vehicle** — many states elevate the charge or add mandatory jail - **Accident, especially with injury** — can convert a misdemeanor into a felony - **Refusing the breath/blood test** — usually triggers a longer license suspension on its own, separate from the criminal case ## You're fighting two cases, not one A DUI/DWI arrest sets two parallel processes in motion: 1. **The criminal case** — where the prosecutor has to prove you were impaired beyond a reasonable doubt. 2. **The administrative license case** — handled by the state DMV/MVD, with a much lower burden of proof and a tight deadline (often 7–30 days from arrest) to request a hearing or you lose your license by default. Missing the administrative deadline is one of the most common, costly mistakes. Talk to a lawyer immediately, not after your court date. ## Diversion, deferred adjudication, and pretrial alternatives Many states (and many local prosecutors in Wisconsin) offer first-offense alternatives — diversion, deferred judgment, ARD, 24D, treatment programs — that can avoid a permanent conviction. Eligibility is fact-specific (BAC, driving history, accident, refusal). A local DUI defense attorney will know what your county's prosecutor offers. ## What you should do Don't plead guilty at your first appearance without talking to a lawyer. OWI cases have technical defenses (calibration of the breath device, traffic-stop legality, blood-draw chain of custody, field-sobriety test administration) that can change the outcome. Most Wisconsin DUI defense attorneys offer free consultations. --- *This guide is general information about Wisconsin OWI law as of early 2026 and is not legal advice. Penalties shift, prosecutors have discretion, and your specific facts will change the analysis. Talk to a licensed Wisconsin criminal-defense attorney about your case before making decisions.*