The new Kansas DUI law, enacted in 2022 through House Bill 2377, changed how prior offenses are counted, replaced long full-license suspensions with ignition interlock restrictions, and closed the diversion route around monitored driving. Senate Bill 500 added further adjustments to restricted driving privileges effective January 1, 2025. If you are charged with a DUI in Kansas today, three things shape your case: how many prior convictions you have in the last ten years, whether you took or refused the chemical test, and whether you are willing to drive with an ignition interlock device (IID).
How Prior DUIs Now Count
Kansas used to count every DUI conviction in your lifetime when deciding the severity of a new charge. The revised statute draws the line at ten years. Convictions within the past ten years count as full priors and push a new offense into a higher penalty tier. Older convictions still appear on your record, but they no longer carry the same sentencing weight.
This matters most for drivers with old convictions. Under the previous lifetime rule, someone with two DUIs from 15 and 20 years ago faced felony charges on a new arrest. Under the current framework, those older convictions are treated differently, and the new charge may remain a misdemeanor depending on the circumstances. The change does not erase old convictions; it recalibrates how much they escalate current penalties.
Criminal Penalties by Offense Level
Kansas classifies DUI offenses on a sliding scale, and every conviction carries a mandatory alcohol and drug evaluation. The court can order treatment based on the results.
- First conviction: a class B nonperson misdemeanor. Minimum of 48 consecutive hours in jail (or 100 hours of community service) plus a fine.
- Second conviction: a class A nonperson misdemeanor. Minimum of 90 days in jail and a higher fine. The court cannot waive the minimum jail time.
- Third conviction: also a class A nonperson misdemeanor, with a minimum of 90 days in jail and steeper fines.
- Fourth or subsequent conviction: a nonperson felony. Sentence of 90 days to one year in prison with a $2,500 fine, with no probation or parole eligibility until at least 90 days have been served.
The felony threshold is where the ten-year lookback makes the biggest difference. A fourth lifetime DUI that would have been an automatic felony under the old law can now be charged as a misdemeanor if fewer than two of the prior convictions fall within the ten-year window.
License Suspension and the Interlock Restriction
Separately from any criminal case, the Kansas Department of Revenue imposes administrative penalties on your license after a DUI arrest. These follow their own timeline based on the chemical test result or refusal, independent of what happens in court. The 2022 law restructured these periods and made the ignition interlock device a central part of the process.
Test Failure With BAC Under .15
A first occurrence carries a 30-day suspension followed by 180 days of IID-restricted driving. A second occurrence triggers a one-year suspension followed by one year of interlock restriction. Third and subsequent occurrences carry a one-year suspension plus interlock periods reaching two years on a third occurrence and three years on a fourth.
Test Failure With BAC of .15 or Higher
A first high-BAC failure results in a one-year suspension followed by a one-year interlock restriction. Repeat high-BAC failures carry the same one-year suspension, with interlock periods stretching from two years on a second occurrence to ten years on a fifth or subsequent occurrence.
Test Refusal
Refusing the chemical test triggers a one-year suspension every time, whether it is your first refusal or your fifth. What changes is the interlock restriction that follows: two years for a first refusal, three for a second, four for a third, five for a fourth, and ten years for a fifth or subsequent refusal. These are the longest administrative restriction periods in the current framework.
Driving During a Suspension With an IID
Before 2022, an administrative suspension meant waiting out the full period without any legal driving. The revised law created a path back on the road during the suspension itself if you agree to install an ignition interlock device. Under K.S.A. 8-1015, you can apply to the Division of Vehicles to convert your full suspension into a restricted license that allows driving only in an IID-equipped vehicle.
The application requires a $100 fee. If approved, you receive an order specifying the restrictions, which you must carry any time you drive. The Division approves the request unless your driving privileges have been separately suspended, revoked, or disqualified for another reason.
Compliance-Based Removal
You cannot simply run out the clock on your interlock restriction. To qualify for device removal, you must complete the final 90 days of the restriction without a single failed breath test, tampering attempt, or program violation. A positive result or violation in that final 90-day window resets the clock. Drivers who continue drinking during the restriction may find their IID requirement extended well beyond the original term.
Tampering and Interlock Violations
Under K.S.A. 8-1017, it is illegal to tamper with or circumvent an ignition interlock device, to ask someone else to blow into the device or start the vehicle for you, to blow into another person’s device to help them start their vehicle, or to drive any vehicle not equipped with an IID while your license is restricted to IID-equipped vehicles.
Each of these is a class A nonperson misdemeanor carrying up to one year in jail. The administrative consequences compound the criminal charge. A first tampering conviction adds 90 days to the interlock restriction period. A second tampering conviction restarts the entire original restriction from scratch. Driving a vehicle without an IID when your license requires one also restarts the restriction from day one.
Diversion No Longer Avoids the IID
A DUI diversion agreement lets a defendant avoid a conviction by completing conditions set by the prosecutor, such as an alcohol evaluation, treatment, and fees. If every condition is satisfied, the charge is dismissed. Before 2022, diversion participants generally were not required to install an ignition interlock device.
That has changed. If the DUI case involved a failed or refused chemical test, an IID is now a standard condition of the diversion agreement. The interlock period within diversion typically mirrors what a first-offense conviction would carry. You still benefit from avoiding a conviction on your record, but the day-to-day monitoring obligation is essentially the same.
Commercial Drivers Face Harsher Consequences
A DUI affects both commercial and personal driving privileges for anyone holding a Commercial Driver’s License, and the commercial penalties are harsher. A first DUI results in a minimum one-year disqualification from commercial driving, whether the offense occurred in a commercial vehicle or a personal car. A second DUI triggers a lifetime CDL disqualification. These periods are mandatory and cannot be reduced by the court.
Under K.S.A. 8-2,150, CDL holders generally cannot use diversion to keep a traffic violation off their commercial driving record. The 2022 changes reinforced this in the DUI context. DUI offenses are reported to the Commercial Driver’s License Information System, a national database that tracks disqualifying offenses across state lines, so diversion in Kansas will not keep a DUI off your national commercial record.
SR-22 and Interlock Costs
Fines and court costs are not the end of the financial picture. Any driver convicted of DUI, or who completes a DUI diversion agreement, must file proof of financial responsibility (an SR-22 certificate) with the Division of Vehicles for 12 consecutive months. If coverage lapses at any point during that period, the 12-month clock restarts. The SR-22 is just a form your insurer files, but most insurance companies charge significantly higher premiums for drivers who need one.
The device itself carries ongoing costs. Installation fees typically run between $70 and $150, with monthly lease and calibration fees ranging from roughly $60 to $120 depending on the provider and vehicle. A one-year IID restriction translates to roughly $800 to $1,600 in device costs alone. Multi-year restrictions from a test refusal or repeat offense scale accordingly, and because removal is compliance-based, the costs continue until you complete 90 clean days at the end.
Driving on a Suspended License Is Its Own Charge
Skipping the IID process and driving anyway is a separate criminal offense under K.S.A. 8-262. A first conviction is a class B nonperson misdemeanor, and repeat violations escalate. This charge stacks on top of whatever penalties the original DUI already imposed, so applying for the IID-restricted license is almost always the better route to staying on the road legally.