Discover Your Options Schedule a Free Consultation
Glass of Alcohol, Car Keys and Handcuffs

What Are the Penalties for a First-Time DWI Offense in Missouri?

Friedrich Law Office, P.C. April 29, 2025

Driving While Intoxicated (DWI) is a serious offense in Missouri, carrying significant legal, financial, and personal consequences, even for first-time offenders. Reviewing the penalties associated with a first-time DWI in Missouri is crucial for residents and visitors alike to move through the state's legalities effectively. 

At Friedrich Law Office, P.C. in Raymore, Missouri, we’re dedicated to bringing you justice when you’ve been charged with a crime. Here, we'll elaborate on penalties, defense strategies, and consequences of a first-time DWI conviction in Missouri.

What's Defined as a DWI in Missouri?

In Missouri, a person commits the offense of driving while intoxicated if they operate a motor vehicle while in an intoxicated condition. This includes being under the influence of alcohol, drugs, or a combination thereof. 

A blood alcohol concentration (BAC) of 0.08% or higher constitutes per se intoxication for drivers. For commercial drivers, the limit is 0.04%, and for drivers under 21 years of age, a BAC of 0.02% or more can lead to DWI charges.

Missouri enforces an implied consent law, which means that drivers automatically agree to submit to chemical testing (breath, blood, or urine) when requested by law enforcement. Refusing to take a chemical test results in an automatic one-year license revocation, regardless of whether the driver is later convicted of DWI.

What Are the Penalties for a First-Time DWI Offense?

A first-time DWI offense in Missouri is typically classified as a Class B misdemeanor. The penalties upon conviction may include:

  • Jail time: Up to six months in county jail.

  • Fines: Up to $1,000 in fines.

  • Probation: Probation is possible but may require compliance with conditions such as community service, alcohol treatment programs, and regular check-ins with a probation officer.

  • Community service: Courts may impose up to 100 hours of community service instead of or in addition to jail time.

A first-time DWI offense typically carries a range of penalties, including fines, license suspension, mandatory alcohol education or treatment programs, and possible jail time, although the specifics can vary significantly based on jurisdiction and individual circumstances, such as BAC level and whether any property damage or injuries occurred.

Aggravating Factors That Increase Penalties

Certain circumstances can increase the severity of the penalties for a first-time DWI conviction. Some of these include:

  • High BAC levels: Drivers with a BAC of 0.15% or higher face enhanced penalties, including mandatory minimum jail sentences.

  • Presence of a minor passenger: If a person under 17 years of age is in the vehicle at the time of the offense, the charge may be elevated to a Class A misdemeanor, carrying up to one year in jail and fines up to $2,000.

  • Accidents resulting in injury or death: If the DWI incident involves an accident that causes physical injury or death, the charges can escalate to felony levels, with significantly harsher penalties.

The presence of aggravating factors can significantly increase the penalties associated with a first-time DWI conviction in Missouri, potentially leading to harsher sentences, elevated charges, and long-term consequences.

Administrative Penalties

In addition to criminal penalties, a first-time DWI offense triggers administrative actions against the offender's driving privileges:

  • License suspension: Typically, a 90-day suspension, though the offender may qualify for a restricted driving permit after 30 days.

  • Ignition Interlock Device (IID): The court may require the installation of an IID as a condition for reinstating driving privileges. The IID requires the driver to pass a breath test before starting the vehicle.

  • Points on driving record: A DWI conviction results in 8 points added to the driver’s record, leading to higher insurance rates and potential further suspension.

The administrative penalties for a first-time DWI in Missouri can result in higher insurance rates and possible license suspension.

Financial Implications

Beyond fines, a DWI conviction entails various costs:

  • Substance Awareness Traffic Offender Program (SATOP): Mandatory participation in SATOP, which includes assessment screening fees and additional program costs.

  • Legal fees: Attorney fees can vary widely based on the case but often range from $2,000 to $10,000.

  • Increased insurance premiums: A DWI conviction often leads to significantly higher auto insurance rates, with some providers increasing premiums by as much as 80%.

  • Other costs: These may include court costs, probation fees, IID installation and maintenance, and license reinstatement fees.

Failing to factor in these additional costs can lead to financial hardship for those convicted of a DWI.

Potential Defense Strategies for a First-Time DWI Charge

Although a DWI charge is serious, there are several potential defense strategies, including:

  • Challenging the traffic stop: Law enforcement must have a valid reason for pulling a driver over. If there was no reasonable suspicion, the stop may be deemed unconstitutional, leading to the dismissal of evidence.

  • Questioning field sobriety tests: Field sobriety tests are subjective and may be influenced by medical conditions, poor road conditions, or improper administration by law enforcement.

  • Challenging breathalyzer or blood test results: Breathalyzer machines can be inaccurate if not properly calibrated, and blood tests must follow strict procedures.

  • Rising BAC defense: The argument that the driver’s BAC was below the legal limit while driving but rose above 0.08% by the time the test was administered.

If successful, any of these defense strategies can potentially lead to a dismissal of the charges or a reduction in penalties for a first-time DWI charge in Missouri.

Long-Term Consequences of a First-Time DWI Conviction

A DWI conviction can have significant long-term repercussions, including:

  • Employment consequences: Some employers may terminate employees or deny job applications based on a DWI conviction.

  • Travel restrictions: Certain countries, such as Canada, restrict entry for individuals with a DWI conviction.

  • Professional licensing issues: Certain professions, such as healthcare, law, and commercial driving, may be impacted by a DWI conviction.

  • Permanent criminal record: A DWI conviction remains on record for 10 years before being eligible for expungement in Missouri.

The long-term repercussions of a DWI conviction can severely impact an individual's personal and professional life, affecting their employment prospects, travel abilities, and eligibility for professional licenses, in addition to the enduring mark of a criminal record.

Rehabilitation Programs and Alternative Sentencing Options

Missouri courts often encourage rehabilitation rather than punishment for first-time offenders. Some alternative sentencing options include:

  • DWI court programs: These programs focus on treatment and monitoring rather than incarceration.

  • Alcohol or drug treatment programs: Completion of an approved treatment program may help reduce sentencing severity.

  • Community service and probation: First-time offenders may be sentenced to probation instead of jail time, provided they comply with strict conditions.

In Missouri, first-time DWI offenders may be eligible for alternative sentencing options that focus on rehabilitation and treatment, such as DWI court programs, alcohol or drug treatment programs, and community service with probation rather than incarceration.

A first-time DWI offense in Missouri carries substantial legal and financial consequences. Understanding these penalties underscores the importance of responsible driving and the need for informed legal counsel if charged. Moving through the intricacies of DWI laws requires a thorough understanding of state statutes and a proactive approach to legal defense.

Contact a DWI Attorney Today

If you or someone you know is facing a first-time DWI offense in Missouri, consulting with an experienced attorney can significantly impact the case's outcome and help mitigate long-term consequences. Friedrich Law Office, P.C. serves clients in Harrisonville, Raymore, Butler, and the surrounding areas, as well as Kansas. Contact us today for a consultation.