The 15 days
that decide your license.

Most people walking out of a Missouri police station after a DWI arrest think they have one problem: the criminal charge. They have until the arraignment to find a lawyer, the lawyer will negotiate, the case will move at the pace of the docket. There is time. There is process.

That is half right. The criminal case moves at the pace they expect. The other case — the one nobody warned them about — is already running, and they have fifteen days to act on it. Miss that deadline, and the license is gone. The criminal case can still be won. They can be acquitted at trial. They can have the charge dismissed in negotiation. None of that will get the license back. By then, it is too late.

This is the most consequential thing a Missouri DWI defendant can know in the first two weeks after an arrest. Most never hear it from the arresting officer. It is rarely emphasized in the paperwork they go home with. It is the single biggest reason people lose their driving privileges unnecessarily — and it is the first thing we move on the moment a client walks through our door.

Why a Missouri DWI is two cases, not one

A Missouri DWI arrest triggers two separate, independent legal proceedings. They run in parallel. They are decided by different bodies. They have different rules of evidence, different burdens of proof, and different consequences. Winning one does not win the other.

The first is the criminal case. The State files a charge — typically Driving While Intoxicated under RSMo 577.010. It moves through the criminal court (associate circuit or circuit court, depending on the county and the seriousness of the charge). The prosecution must prove guilt beyond a reasonable doubt. The penalties on this side include possible jail time, fines, probation, ignition interlock requirements, and a permanent criminal record. This is the case most people focus on, and rightly — the stakes are real.

The second is the administrative case. This one is run by the Missouri Department of Revenue. It is purely about your license. The standard of proof is much lower (a preponderance of the evidence, not beyond a reasonable doubt), and it is decided not by a judge in a courtroom but by an administrative hearing officer. The penalty is a license suspension or revocation. And here is the critical part: if you do nothing, the Department of Revenue will suspend your license automatically — regardless of what eventually happens in the criminal case.

The 15-day clock

When a Missouri officer arrests a driver and either obtains a breath test result above 0.08% (0.04% for a CDL holder, 0.02% for someone under 21) or the driver refuses to submit to a chemical test, the officer takes the driver's physical license on the spot. In its place, the driver is handed a piece of paper that functions as a temporary fifteen-day driving permit.

That paper looks like a receipt. It has fine print. Buried in that fine print is the most important fact in any Missouri DWI case: the recipient has fifteen days from the date of arrest to request an administrative hearing with the Department of Revenue. If the request is not made within that window, the right to a hearing is forfeited and the suspension takes effect automatically on the sixteenth day.

Fifteen days is not a lot of time. It includes weekends and holidays. The clock starts on the day of the arrest, not the day the paperwork is mailed or the day the driver gets out of jail. By the time most people stop reeling, find a lawyer, and have an initial consultation, several days are already gone. By the time the lawyer files the request, more days. The longer the request is delayed, the less time exists for the lawyer to gather evidence, subpoena records, and prepare for the hearing.

What happens if you do nothing

If the fifteen-day window closes without a hearing request, the Department of Revenue's records reflect an automatic administrative suspension. The length of the suspension depends on the circumstances:

• First offense, breath test above 0.08%: 90-day suspension, of which the first 30 days is hard suspension (no driving at all) followed by 60 days of restricted privileges with an ignition interlock device.
• Refusal to submit to a chemical test (any offense): a one-year revocation under Missouri's Implied Consent law (RSMo 577.041), with very limited eligibility for hardship driving.
• Repeat offenders face longer suspensions and more onerous conditions for reinstatement.

None of this depends on what happens in the criminal case. A defendant who is acquitted at trial six months later still has the license suspension. A defendant whose case is dismissed for lack of evidence still has the suspension. The administrative case lives independently of the criminal case, and unless someone affirmatively challenges the suspension within fifteen days, it sticks.

What an administrative hearing actually does

Filing a request for a hearing within the fifteen-day window does two things immediately. First, it stops the suspension from taking effect on day sixteen — the temporary permit gets extended until the hearing is held and decided, often months later. The driver continues to drive lawfully throughout that period.

Second, it creates an opportunity to defeat the suspension entirely. At the hearing, an attorney can challenge whether the arresting officer had probable cause for the stop, whether the breath test machine was properly calibrated, whether the maintenance records meet Missouri's regulatory requirements, whether the officer followed the fifteen-minute observation period before administering the test, whether the driver was actually informed of their rights under the Implied Consent law, and a long list of other technical and procedural issues. Many of these issues are also relevant to the criminal case — but the administrative hearing offers a separate, earlier opportunity to test them.

If the hearing officer rules in the driver's favor, the suspension is set aside and the license is fully restored. If the ruling goes against the driver, there is still an opportunity to appeal to circuit court (a "trial de novo"), which extends the timeline further and offers another chance to win.

Even where the underlying facts are not strongly defensible, requesting the hearing buys time. Months of continued lawful driving while the case progresses is itself enormously valuable to people whose jobs, families, or healthcare access depend on the ability to drive.

What the hearing involves

An administrative hearing is not a courtroom trial in the way most people picture one. It is held before an administrative hearing officer, often by telephone or video. The arresting officer typically appears (sometimes by phone), and the State puts on its evidence — usually consisting of the arrest report, the breath test ticket, the calibration records, and the officer's testimony. The driver, through counsel, has the right to cross-examine the officer, present evidence, and argue the case.

The standard of proof is preponderance of the evidence — meaning the State must show that it is more likely than not that the driver was operating a vehicle with a prohibited blood-alcohol concentration (or refused a test after being properly informed of the consequences). This is a lower standard than the criminal case's "beyond a reasonable doubt," which is one reason that winning the administrative case is harder than winning the criminal one. But it is also why getting the hearing on the calendar — and getting time to prepare for it — matters so much.

Common mistakes that cost people their license

Even people who eventually call a lawyer often arrive having already made one or more of these mistakes:

Assuming the criminal case is the only case. The most common mistake. People focus entirely on finding a defense lawyer for the upcoming arraignment, never realizing that a separate, parallel deadline is running.

Throwing away the temporary permit paperwork. The fifteen-day notice is on a small printed form that looks like a receipt. People discard it without reading it. The legal deadline runs whether or not the paperwork was preserved.

Waiting for the criminal case to be filed before acting. Charges are sometimes filed weeks or months after the arrest — but the administrative hearing deadline runs from the date of the arrest, not the date charges are filed. Waiting for the formal charge guarantees the deadline will pass.

Assuming a refusal "just" means a one-year suspension. A refusal under Missouri's Implied Consent law triggers a one-year revocation that is much harder to reverse than a regular suspension. Hardship driving privileges after a refusal are limited and require a substantial waiting period.

Trying to handle the administrative hearing without counsel. The hearing has its own rules, its own evidentiary standards, and its own subpoena process. The State will be represented. The hearing officer's decision is final unless appealed within the time required by statute. This is not the place to learn on the fly.

What to do in the first 24 hours after a DWI arrest

1. Save the paperwork. Every document the police hand you. The temporary permit. The breath test ticket. The arrest report if you receive a copy. Photograph everything in case anything is lost.
2. Write down what happened. While memory is fresh: the time of the stop, what the officer said, the field sobriety tests administered, what you ate or drank and when, any medications you take, whether the officer waited fifteen minutes before the breath test, whether you were read your rights, and any unusual circumstances. Date and sign your notes.
3. Do not post about it on social media. Anything posted is potentially discoverable in either case.
4. Do not contact the arresting officer or the prosecutor directly. Anything said is admissible against you.
5. Call an attorney experienced in Missouri DWI defense. Same day if at all possible. The fifteen-day clock is running.

What we do when you call

The first conversation is free, confidential, and usually short. We need to know the date of the arrest (to confirm the deadline), whether a chemical test was administered or refused, and any documents you have. Once retained, we file the request for the administrative hearing immediately — typically within hours of being engaged. From there we begin working both the criminal case and the administrative case in parallel: subpoenaing the breath test maintenance records, requesting the dashcam and bodycam footage, reviewing the discovery as it comes in from the prosecutor, and preparing for whichever proceeding moves first.

For more on our approach to DWI defense generally, see our practice-area page. For answers to the most common questions clients ask, see our FAQ. For a glossary of the terms you'll encounter, see our legal glossary.

If you have been arrested for a Missouri DWI in the last fifteen days, the most useful thing you can do today is pick up the phone. The hearing request takes minutes to file once we are retained. The license you save will be your own.

This article is general legal information for Missouri residents. It is not legal advice. Missouri law changes regularly — statutes are amended, case law evolves, and the application of any rule depends on the specific facts of each case. Do not act, or refrain from acting, based on this article without consulting a qualified Missouri attorney about your particular situation. Reading this article does not create an attorney-client relationship. For advice on your specific case, contact David Naumann & Associates at (314) 831-9350. The initial consultation is free. See the full Legal Disclaimer for complete terms.