Everything you need to know about Missouri DUI laws — fines, jail time, license suspension, and when you need an experienced attorney on your side.
Find A DUI LawyerGetting charged with a DUI in Missouri is a serious legal matter — one that can follow you for years in the form of higher insurance rates, a suspended license, and even jail time. Whether you are facing a first-time DUI offense in Missouri or dealing with a second or third charge, understanding the penalties and your legal options is the first step toward protecting your future.
This guide breaks down Missouri's DUI laws as they stand in 2026, covering everything from the legal blood alcohol limit to felony DUI consequences and what factors can make penalties worse.
A first DUI in Missouri is a Class B misdemeanor with up to 6 months in jail and a $1,000 fine. A second offense is a Class A misdemeanor with up to 1 year in jail, a third offense is a Class E felony, and a fourth or later offense is a Class D felony. You have only 15 days after an arrest to request a hearing to challenge an administrative license suspension.
In Missouri, driving while intoxicated is referred to legally as DWI (Driving While Intoxicated), though DUI is commonly used interchangeably. Under Missouri Revised Statutes § 577.010, a person commits a DWI offense when they operate a motor vehicle while in an intoxicated or drugged condition.
The legal thresholds for intoxication in Missouri are:
You can also be charged with a DWI even if your BAC is below 0.08% if an officer determines you are impaired by alcohol or drugs. Missouri law covers impairment from prescription medications, marijuana, and other controlled substances as well.
For a comprehensive overview of how DUI laws work across the U.S., see this guide on DUI laws and penalties.
Missouri's penalties escalate quickly with each conviction. Each level carries its own jail time, fines, and license consequences.
A first DUI offense in Missouri is classified as a Class B misdemeanor. While it may not sound severe, the consequences are wide-ranging and can have a lasting impact on your personal and professional life.
| Penalty | First Offense |
|---|---|
| Jail Time | Up to 6 months |
| Fine | Up to $1,000 |
| License Suspension | 30 days (with possible restricted driving privilege) |
| Probation | Up to 2 years |
| Substance Abuse Traffic Offender Program (SATOP) | Required |
A second DUI conviction in Missouri is treated significantly more harshly. It is charged as a Class A misdemeanor, with mandatory minimum sentences.
| Penalty | Second Offense |
|---|---|
| Jail Time | Minimum 10 days; up to 1 year |
| Fine | Up to $2,000 |
| License Revocation | 1 year (5 years if within 5 years of first offense) |
| IID Requirement | Required for reinstatement |
| SATOP | Required (more intensive level) |
For a second offense, Missouri courts are unlikely to grant leniency without strong legal representation. If you're facing this situation, speaking with a Missouri DUI lawyer as soon as possible is strongly advised.
Missouri's "persistent offender" and "aggravated offender" classifications elevate DUI charges to felonies for repeat violators. A third DUI offense is a Class E felony, punishable by up to 4 years in state prison. This is a life-altering charge that affects voting rights, employment, and housing.
A fourth or subsequent DUI conviction in Missouri is a Class D felony, carrying up to 7 years in prison. At this level, prosecutors typically seek maximum sentences.
Felony consequences beyond prison: A felony DUI conviction in Missouri can result in permanent loss of your driver's license, loss of firearm rights, difficulty finding employment, and ineligibility for certain professional licenses.
Missouri has an Administrative License Suspension (ALS) law, which means your license can be suspended automatically — separate from any criminal case — if you fail or refuse a chemical test. A refusal triggers a 1-year license revocation for a first offense. You have only 15 days from arrest to request an administrative hearing to challenge this suspension.
Key takeaway: Acting quickly after a DUI arrest is critical. Missing the 15-day window to request a hearing means your license will be automatically suspended, even if your criminal case is later dismissed.
Even first-time offenders may be required to install an Ignition Interlock Device (IID) on their vehicle to obtain a limited driving privilege. This device requires the driver to pass a breath test before the engine will start. Costs for installation and monthly monitoring are borne by the driver.
Certain circumstances can dramatically increase the severity of DUI charges and penalties in Missouri, even for a first offense:
These situations call for immediate legal help. Missouri DUI laws are complex, and an experienced attorney can make the difference between prison and probation. You can learn more about the full scope of DUI laws and how they're applied across different states.
In Missouri, a DUI conviction adds 12 points to your driving record. Accumulating 8 or more points in 18 months results in license suspension. Points remain on your record for 3 years, though the conviction itself stays on your criminal record indefinitely.
Insurance companies treat a DUI conviction as a major red flag. Most drivers see their auto insurance premiums increase by 50–100% or more after a DUI, and some insurers may drop coverage entirely. Missouri requires proof of SR-22 financial responsibility filing before reinstating a license after a DUI suspension.
Missouri law does allow for expungement of a single DUI conviction under certain conditions, as outlined in Missouri Revised Statutes § 577.054. Eligibility generally requires:
Expungement is not automatic — you must file a petition with the court. This process is best handled with the guidance of a knowledgeable DUI attorney.
Knowing your rights can protect you from making the situation worse:
The Missouri Department of Revenue provides information on driver license reinstatement requirements. For state-level DWI statutes, you can review the official Missouri Revised Statutes § 577.010.
DUI law is complex, and the stakes — your freedom, your license, your livelihood — are high. A qualified Missouri DUI defense attorney can:
The legal blood alcohol concentration (BAC) limit in Missouri is 0.08% for drivers 21 and older, 0.04% for commercial drivers, and 0.02% for drivers under 21 under Missouri's Zero Tolerance Law.
A first DUI offense carries up to 6 months in jail, but many first-time offenders receive probation rather than active jail time, especially with no aggravating factors and strong legal representation.
A DUI conviction stays on your criminal record permanently unless expunged. Driving points remain on your motor vehicle record for 3 years. Expungement may be possible after 10 years if you meet the eligibility requirements.
Yes, but refusal has serious consequences under Missouri's implied consent law. Refusing a chemical test results in a 1-year license revocation for a first offense and can be used as evidence against you in court.
A third DUI offense in Missouri is a Class E felony, and a fourth or subsequent offense is a Class D felony. DUI causing serious injury or death can also result in felony charges on the first offense.
When you factor in fines, court fees, attorney costs, SATOP program fees, IID installation, increased insurance premiums, and license reinstatement fees, a first-time DUI in Missouri can cost $10,000 or more.
While not legally required, having an attorney significantly improves your chances of a favorable outcome. A DUI lawyer can challenge evidence, negotiate reduced charges, and help you avoid a conviction that stays on your record permanently.
Local attorneys who know the courts and prosecutors in your area can make a significant difference in your case. Connect with experienced DUI defense lawyers in Chesterfield, Creve Coeur, and Richmond Heights, or browse all Missouri DUI lawyers on FindTheLawyers.
Find A DUI LawyerLegal Disclaimer: This article is intended for informational purposes only and does not constitute legal advice. Laws may change; consult a licensed Missouri attorney for advice specific to your situation.
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