A second OWI offense within 10 years in Madison, Wisconsin, carries a mandatory minimum of 5 days to 6 months in jail and a 12- to 18-month driver’s license revocation. In 2026, judges have zero discretion to waive the ignition interlock device (IID) requirement, which must stay for at least one year.

If you are facing a second OWI charge in Wisconsin, you are facing steep penalties. The penalties that are on the table are even steeper if your prior OWI conviction was within the past 10 years. In this scenario, you are facing mandatory minimum penalties—including mandatory jail time—and you will need to defend yourself successfully to avoid these (and other) life-altering consequences.

Successfully defending against a second OWI charge requires experienced legal representation. As you may know from your prior case, prosecutors and judges in Wisconsin take drunk driving charges very seriously. Wisconsin’s OWI laws are strict as well, and knowing how the law applies under the specific circumstances of your case is vital for making informed decisions about your defense.

Mandatory Minimum Jail Time

While a standard first OWI offense in Wisconsin does not carry jail time, a second OWI within 10 years carries a mandatory term of incarceration. If you get convicted of a second OWI within 10 years, you will face:

  • A mandatory minimum jail sentence of five days; and,
  • A maximum jail sentence of up to six months.

This assumes that your case does not involve any special circumstances or aggravating factors. If, for example, you had a minor under the age of 16 in your vehicle or you are being accused of causing a serious or fatal accident while driving under the influence, you could be facing anywhere from 10 days to 10 years of prison time.

The 10-Year Look-Back Rule

As mentioned above, you are only facing mandatory jail time if your prior conviction occurred within the past 10 years. This is known as the “10-year look-back rule.” If you have a prior OWI conviction that is more than 10 years old, you are facing the same penalties as a first-time offender.

IID Installation Requirements

For a second OWI within 10 years, once you get out of jail and get your driver’s license back, you will be required to install an ignition interlock device (IID) in each of your vehicles in order to restore your driving privileges. You will be required to keep an IID installed in each of your vehicles for anywhere from 12 to 18 months.

You must install each IID at your expense, and you will need to pay for monitoring as well. You will also have to pay to have your IIDs removed. This alone can add more than $1,500 to the cost of your OWI.

Occupational License Eligibility

In Wisconsin, a second OWI within 10 years carries a 12- to 18-month driver’s license revocation. However, you may be eligible to obtain an occupational license after 45 days. Obtaining an occupational license allows you to drive for the following purposes:

  • Going to work
  • Going to school
  • Going to your place of worship
  • Going to the grocery store, bank, and pharmacy
  • Taking your children to school or day care
  • Attending medical appointments
  • Completing your Intoxicated Driver Program (IDP)

When you have an occupational license, you are not allowed to drive for recreational purposes, and you are not allowed to drive a commercial motor vehicle (even if you have a CDL). Your occupational license will also specify the hours that you are allowed to drive; and, as the Wisconsin Department of Transportation (DOT) makes clear, “[i]f you operate a motor vehicle outside the specified hours or for a purpose not listed on the occupational license, you can be cited for operating after suspension or revocation.”

Challenging the Stop in Madison

Regardless of whether you have a prior OWI on your record, prosecutors must be able to prove your guilt beyond a reasonable doubt to secure a conviction in Wisconsin state court. The fact that you have a prior OWI has no bearing on whether you are guilty in your current case.

Depending on the circumstances of your case, you may be able to use a variety of defense strategies to avoid unnecessary consequences. For example, one strategy you may be able to use is challenging the constitutionality of your traffic stop in Madison.

Any time you are driving, you are protected by the U.S. Constitution. Specifically, the Fourth Amendment to the U.S. Constitution prohibits the police from stopping drivers without a valid justification. In legal terms, this means the police must have “reasonable suspicion” to conduct a traffic stop.

If the police stopped you without reasonable suspicion in violation of your Fourth Amendment rights, this could render all of the evidence obtained following your traffic stop inadmissible in court. If prosecutors don’t have evidence they can use against you, they won’t be able to secure a conviction in court. Types of evidence that can be rendered inadmissible by an unconstitutional traffic stop include (but are not limited to):

  • The police officer’s observations
  • Dash camera or body-worn camera footage
  • Your blood alcohol concentration (BAC) reading
  • Your field sobriety test (FST) results
  • Your statements to the police

When you hire an experienced Madison OWI defense lawyer to represent you, your lawyer will be able to assess whether challenging the constitutionality of your traffic stop is a viable defense strategy. If this is a viable defense strategy in your case, your lawyer can seek to have your case dismissed based on the fact that prosecutors won’t be able to prove your guilt at trial.

Schedule a Free Consultation with a Madison OWI Defense Lawyer Today

If you are facing a second OWI charge in Madison, Wisconsin, we encourage you to contact us promptly for more information. To discuss your case with an experienced Madison OWI defense lawyer in confidence, call 608-305-4518 or tell us how we can reach you online now.

The post Wisconsin Second Offense OWI: 2026 Mandatory Minimums and Ignition Interlock Rules appeared first on Mays Law Office.

Mays Law

Lisa Pierobon Mays

Attorney Lisa Pierobon Mays, as the owner of Mays Law Office focuses her legal practice on representing Wisconsin workers who have been injured on the job. With more than twenty-five years of experience, she is dedicated to advocating for injured…

Lisa Pierobon Mays

Attorney Lisa Pierobon Mays, as the owner of Mays Law Office focuses her legal practice on representing Wisconsin workers who have been injured on the job. With more than twenty-five years of experience, she is dedicated to advocating for injured workers who have been unfairly denied their rightful workers’ compensation benefits by companies and their insurers. Lisa understands the profound impact of a work injury, including lost income, medical expenses, emotional distress, physical pain, and social isolation. She takes the time to listen to each client and develops a tailored legal strategy for their specific situation. Lisa is personally involved in every case from beginning to end, ensuring clear communication and recognizing the unique concerns, needs, and expectations of each individual she represents.

Stephen Mays

Attorney Mays, as the owner of Mays Law Office, LLC, practices in all areas of criminal and traffic defense throughout the entire State of Wisconsin. Prior to his becoming a defense attorney, Attorney Mays worked in the Dane County District Attorney’s office.

He has won OWI cases at the municipal, circuit, appellate and Supreme Court levels, and appears regularly before the Federal District Court of Wisconsin and the United States Court of Appeals for the 7th Circuit. He is also admitted to practice before the United States Supreme Court.

He is a past President and member of the Dane County Criminal Defense Lawyers’ Association, as well as a sustaining member of the National Association of Criminal Defense Lawyers, Wisconsin Association of Criminal Defense Lawyers, and the Bar Associations for the Western and Eastern Districts of Wisconsin. He has been a member of the James E. Doyle Inns of Court, as well as the National College for DUI Defense. He is one of the original members of the Drunk Driving Roundtable – an association of attorneys dedicated to the tenacious defense of citizens accused of drunk driving.

He was selected to be a member of the Department of Transportation’s Technical Committee, and has testified before various committees regarding proposed motor vehicle legislation, most recently convincing a sub-committee to not extend the territorial boundaries for OWI enforcement. He is a frequent lecturer on the defense of intoxicated driving, which includes an annual presentation by the Wisconsin Association of Criminal Defense Lawyers in the “Strategies in Handling OWI Cases in Wisconsin” series, a seminar touted as a “must attend” for Wisconsin lawyers defending OWI cases.

Several of Attorney Mays’ cases have attracted substantial media attention, including the successful defense of an individual charged with killing his twin infant daughters while allegedly driving drunk. His cross-examination techniques have gained him statewide recognition as one which has police officers persuading prosecutors to amend charges so as to not have to subject them to his cross-examination again.