Will I Go to Jail for a First-Time DWI in Missouri?

When someone is arrested for DWI for the first time in Missouri, one of the first questions is whether jail time is inevitable. The answer depends on several factors, including the person’s blood alcohol content at the time of arrest, whether they qualify for a suspended imposition of sentence, and whether DWI court or other treatment programs are available.

At Rose Legal Services, we represent individuals facing their first DWI charge throughout Missouri. Understanding the potential jail time and sentencing options is critical because the outcome of a first offense can significantly impact someone’s future.

First-Offense DWI is a Class B Misdemeanor

Under Section 577.010.2(1), RSMo, a first-offense DWI in Missouri is classified as a Class B misdemeanor.

A Class B misdemeanor in Missouri carries:

• Up to six months in county jail
• A fine of up to $1,000
• Court costs and other fees

However, the maximum possible sentence is not what most first-time offenders receive. Many first-time DWI cases are resolved without any jail time through a suspended imposition of sentence, probation, or participation in specialized treatment programs.

What is a Suspended Imposition of Sentence?

A suspended imposition of sentence (SIS) is one of the best possible outcomes for a first-time DWI offender. With an SIS:

• The person pleads guilty or is found guilty
• The court does not enter a conviction
• The person is placed on probation (typically for two years)
• If probation is successfully completed, the case is closed without a conviction

This means that after completing probation, the person can truthfully state on most job applications that they have not been convicted of a crime. The case can also potentially be expunged from the person’s record.

However, Missouri law places specific restrictions on when an SIS can be granted for a first-time DWI.

When Can Someone Receive a Suspended Imposition of Sentence?

According to Section 577.010.3, RSMo, a person found guilty of a first-offense DWI shall not be granted a suspended imposition of sentence unless one of two conditions is met:

Condition 1: Minimum Two-Year Probation

The person must be placed on probation for a minimum of two years.

This is straightforward. If someone receives an SIS, the probation period cannot be shorter than two years. During this time, the person must comply with all conditions of probation, which typically include:

• Completing a Substance Abuse Traffic Offender Program (SATOP)
• Paying all fines, court costs, and fees
• Not committing any new offenses
• Complying with any other court-ordered conditions

Condition 2: High BAC and Treatment Program Completion

If the offense was committed with a blood alcohol content of .15 or more and a DWI court or other court-ordered treatment program is available in that circuit, the person must participate in and successfully complete the program.

Section 577.010.3(2), RSMo states that in circuits where a DWI court or docket created under Section 478.007 or other court-ordered treatment program is available, an SIS cannot be granted for someone with a BAC of .15 or higher unless they complete the program.

DWI courts are specialized treatment dockets that combine intensive supervision, substance abuse treatment, frequent court appearances, and accountability measures. Not all Missouri circuits have DWI courts, but they are available in some areas, including certain courts in the St. Louis region.

When is Jail Time Required for First-Offense DWI?

If someone is not granted a suspended imposition of sentence, mandatory minimum jail time applies based on the person’s blood alcohol content at the time of arrest.

According to Section 577.010.5, RSMo:

BAC Between .15 and .20

If the person operated the vehicle with a blood alcohol content between fifteen-hundredths (.15) and twenty-hundredths (.20) of one percent by weight of alcohol in their blood, the required term of imprisonment is not less than 48 hours.

BAC Greater Than .20

If the person operated the vehicle with a blood alcohol content greater than twenty-hundredths (.20) of one percent by weight of alcohol in their blood, the required term of imprisonment is not less than five days.

These are mandatory minimum sentences. This means the judge has no discretion to impose less jail time if the person does not receive an SIS and their BAC was at these levels.

However, if the person does receive an SIS (and meets the requirements discussed above), these mandatory minimums do not apply.

The Two-Track System: Criminal Court and Driver License Suspension

It’s important to understand that a first-time DWI triggers consequences on two separate tracks:

Track 1: The Criminal Case

This is the DWI charge that proceeds through criminal court. This is where the person faces potential jail time, fines, probation, and a possible conviction on their criminal record.

Track 2: Driver License Suspension

According to the Missouri Department of Revenue, a first-time DWI conviction results in a 90-day suspension of driving privileges. This is separate from the criminal penalties.

Additionally, if someone is arrested with a blood alcohol content of .08 or higher (or refuses to submit to a breath or blood test), their license may be administratively suspended or revoked even before the criminal case is resolved. This is governed by Sections 302.500 through 302.540, RSMo.

A person may be eligible for a Restricted Driving Privilege (RDP), which allows limited driving for work, school, medical appointments, and other essential purposes during the suspension period.

What About Probation Without Jail Time?

Even if someone does not receive an SIS, jail time is not always required for first-offense DWI cases where the BAC was below .15. In these situations, the court may impose:

• A suspended execution of sentence (probation with a conviction on the record)
• Weekend jail time (served over consecutive weekends)
• House arrest or electronic monitoring
• Participation in treatment programs

Every case is different, and outcomes depend on the specific facts, the prosecutor’s office, the judge, and the quality of legal representation.

How an Experienced DWI Attorney Helps You

Many people mistakenly believe that because it’s a first offense, the outcome is predetermined or that any attorney can handle the case the same way. This is not true.

An experienced DWI attorney can:

• Challenge the legality of the traffic stop and arrest
• Examine whether field sobriety tests were properly administered
• Review breath or blood test procedures for errors
• Advocate for admission to a DWI court or treatment program
• Negotiate for a suspended imposition of sentence
• Present mitigating factors to the prosecutor and court
• Protect constitutional rights throughout the process

At Rose Legal Services, we dedicate our practice exclusively to criminal defense. DWI is our most common type of case and makes up 40% of our caseload. All of our attorneys have completed the same DWI training as law enforcement officers, and we are very familiar with the prosecutors and judges in courts throughout Missouri.

A First DWI Is Serious, But It Doesn’t Have to Ruin Someone’s Life

A first-time DWI charge is serious, but it does not automatically mean jail time, and it does not have to result in a permanent conviction. With the right legal representation and early intervention, many first-time offenders achieve outcomes that allow them to move forward without the long-term consequences of a criminal record.

We are passionate about helping good people get a second chance. If someone is facing their first DWI charge in Missouri, the decisions made in the early stages of the case can make a significant difference in the outcome.

Rose Legal Services represents individuals throughout Missouri who are facing first-time DWI charges. We understand what’s at stake, and we work to achieve the most favorable outcome possible, whether that means securing a suspended imposition of sentence, gaining admission to a treatment program, or challenging the evidence against our clients.

Your defense starts with a conversation.