What Are the Underage DUI Laws in Kansas?

Posted: April 14, 2026 at 3:22 pm

In Kansas, a driver under 21 can lose driving privileges with a blood or breath alcohol level of .02 or higher, even though the standard adult DUI level is .08. If the alcohol level reaches .08 or the facts show impaired driving, the case can move into the regular DUI statute with tougher criminal and licensing consequences.

Why Underage Drivers Face a Lower Limit

Kansas has a separate under-21 rule in K.S.A. 8-1567a. That law makes it unlawful for a person younger than 21 to operate or attempt to operate a vehicle with an alcohol concentration of .02 or greater. For many young drivers, that means the case starts as a zero-tolerance style license matter long before the adult .08 level is reached.

A person considering whether they need a DWI lawyer in Johnson County should also know that this area of law has two tracks at once. One track involves the court case. The other involves the Kansas Department of Revenue and the driver’s license suspension process. Those two tracks move separately, and quick attention is required to potentially protect your license.

Potential Penalties for Underage DUI

For a first underage occurrence with a test result of .02 or greater but less than .08, Kansas law provides a 30-day suspension, followed by a restricted period of an additional 180 days, during which an ignition interlock device (IID) is required. A second or subsequent occurrence results in a one-year suspension followed by a one-year IID requirement. Modification options do not apply to drivers under 21 with a BAC under .08, which can make the restriction harder to work around.

Drivers have a limited window to request a hearing through the Kansas Department of Revenue to contest the suspension. Missing that deadline can mean losing the chance to challenge the license action entirely, which is one reason early legal involvement matters.

An underage case is not a minor issue just because the test was below .08. A license loss can disrupt:

  • School
  • Work
  • Sports
  • Family responsibilities

To avoid such consequences whenever possible, a strong DUI defense focuses on challenging the stop, the testing process, and the State’s evidence.

When an Underage Case Becomes a Standard DUI Case

Once the alcohol level is .08 or more, or the State claims the driver was too impaired to drive safely, the regular Kansas DUI statute may apply instead of only the under-21 rule. Refusing a requested test can also trigger separate suspension and restriction penalties, and refusal may be used as evidence in court.

  • Below .08 but at least .02: Underage administrative penalties apply.
  • At .08 or more: Standard DUI charges become a real risk.
  • Refusal: The licensing consequences may worsen, and the refusal may be included in the prosecution’s evidence.

Let Our DUI Defense Attorney Develop the Strongest Possible Strategy

When an underage DUI charge puts a license at risk, a DWI lawyer in Johnson County can examine the stop, the testing process, the notices given, and whether the State has the evidence required to support the charge.

Henderson Legal Defense is ready to help you understand your options and protect your record. Schedule your free consultation using our online contact form or call us at (913) 359-3789.