What to Know About Refusing a Breathalyzer Test in Wisconsin

 Posted on September 30, 2026 in DUI/OWI

Refusing a chemical test after a Wisconsin OWI arrest can lead to a driver's license revocation. That refusal case is separate from the underlying OWI charge, so the license consequences can apply even if the OWI case is later dismissed.

If you refused chemical testing during a stop in 2026, a Waukesha County OWI defense lawyer can explain the refusal proceeding, the possible license penalties, and how it may affect your OWI case.

What Is Wisconsin's Implied Consent Law?

Under Wisconsin Statute § 343.305, if you are arrested for an OWI-related offense, an officer can ask you to provide a sample of your breath, blood, or urine for chemical testing. By driving in Wisconsin, you are considered to have consented to this testing.

Before asking you to take the test, the officer must read the "Informing the Accused" notice. This notice explains that refusing the test can lead to a driver's license revocation and other penalties. It also explains that the test result, or your refusal to test, can be used against you in court.

If the officer does not give you the required warnings correctly, you likely have grounds to challenge the refusal.

Is the Roadside Breath Test the Same as the One at the Station?

The handheld breath test an officer will ask you to take at the roadside is a preliminary breath test (PBT). Officers use it to help decide whether there is probable cause to arrest you for OWI.

Refusing a roadside PBT does not trigger the same driver's license revocation that applies when you refuse a chemical test after an OWI arrest. PBT results are also not typically used at trial to prove that you were intoxicated. However, they can be used for limited purposes, such as deciding whether the officer had probable cause to arrest you.

After an OWI arrest, the officer may request an evidentiary chemical test of your breath, blood, or urine. Refusing that test is what can lead to a separate driver's license revocation.

What Are the Penalties for Refusing a Chemical Test in Wisconsin?

If a court finds that you refused a chemical test, your driver's license can be revoked under these circumstances:

• One year for a first refusal

• Two years for certain second refusals

• Three years for a third or later refusal

• Longer revocation periods if a passenger under 16 was in the vehicle

You may also have to complete an alcohol or drug assessment and driver safety plan, and you will likely need to install an ignition interlock device in your car. This device requires you to provide a breath sample before the vehicle will start.

For a first refusal, you may be able to apply for an occupational license after 30 days. This limited license can allow you to drive for approved purposes, such as work, school, or essential household needs.

What Happens if You Challenge a Breath Test Refusal in Wisconsin?

You can fight a refusal by asking the court for a refusal hearing. You’re supposed to receive a written notice saying that the State plans to revoke your driver's license because you refused the test. When you get the notice, you have 10 days to mail or deliver a written request for a hearing to the court listed on that notice.

At the hearing, the judge can consider:

• Whether the officer had enough reason to believe you were driving under the influence

• Whether the officer correctly explained the consequences of taking or refusing the test

• Whether you actually refused the test

• Whether a medical condition made you physically unable to complete the test

If the officer did not follow the required steps, the court may decide that your refusal should not lead to a license revocation.

Schedule a Free Consultation With Our Waukesha OWI Defense Attorney

Attorney Paul Bucher spent 20 years as the Waukesha County District Attorney. He was elected twice as President of the statewide District Attorneys Association and served on dozens of state task forces on violent crime. He has litigated thousands of cases, including some of the most high-profile and complicated prosecutions in Wisconsin, and he has directed or personally handled dozens of homicides, hundreds of drunk driving offenses, and thousands of serious drug cases.

If you’ve been charged with OWI, contact Bucher Law Group, LLC at 262-446-9222 to talk to our Jefferson County drunk driving defense lawyer today.