Key Takeaways

• Texas has a zero-tolerance policy for drivers under 21, meaning any detectable amount of alcohol in your system while driving is illegal, even a BAC as low as 0.01%.
• Fines for a first DUIM (Driving Under the Influence; Minor) under the zero-tolerance law reach $500, but a DWI charge (BAC of 0.08% or higher) carries fines of up to $2,000 for a first offense and up to $10,000 for a third-offense felony.
• A DWI (Driving While Intoxicated) arrest triggers two separate legal processes: a criminal case and an administrative license suspension through DPS. 
• Every element of the state’s case, from the legality of the traffic stop to breathalyzer calibration records and blood sample handling, can be challenged when law enforcement fails to follow proper procedure.
• With an in-house forensic toxicologist and a team that dedicates over 64% of its caseload to DWI defense, Texas Criminal Defense Group provides data-driven defense strategies for underage DWI cases across Texas.

Texas Zero Tolerance Law: What It Means for Drivers Under 21

In Texas, a first DWI under 21 carries fines up to $2,000, a 90-day to 1-year license suspension, and up to 180 days in jail. Unlike adult drivers, who are held to a 0.08% BAC limit, under Texas’s zero-tolerance policy, drivers under 21 have no minimum threshold. Even a BAC of 0.01% or 0.02%, amounts that would not register as impairment in an adult, is enough to trigger a criminal charge against a minor. There is no exception and no margin.

A DWI arrest also starts two separate legal processes: a criminal case and an administrative license suspension, and you have just 15 days from arrest to protect your driving privileges. Dismissal is possible, but it depends on how quickly and aggressively the defense is built.

Maximum Fines for DWI Under 21 in Texas

First Offense

For a first DUIM under the zero-tolerance law, the maximum fine is $500. However, mandatory alcohol awareness program fees, court costs, and administrative charges routinely push the actual out-of-pocket cost well beyond that number.

If the offense rises to a DWI charge (BAC of 0.08% or above), the maximum fine increases to $2,000. If an open container was present in the vehicle, the mandatory minimum jail time increases from 72 hours to six days.

Second & Third Offense

A second DWI carries a maximum fine of $4,000. A third offense is a third-degree felony with fines up to $10,000, and the consequences at that level extend well beyond money into employment, housing, and civil rights.

License Suspension Timelines by Offense

First Offense

A first DUIM under the zero-tolerance law results in a license suspension of 60 to 180 days. A first DWI where the BAC reached 0.08% or higher carries a minimum 90-day suspension and up to one year. 

In either case, you have 15 days from the date of arrest to request an ALR hearing to contest the suspension. Missing that deadline means the suspension proceeds automatically.

Second Offense

A second DUIM doubles the suspension to 120 days. A second DWI can result in a suspension of 180 days to 2 years.

Third Offense

A third DUIM carries a minimum 180-day suspension. If the charge escalates to a felony DWI, the suspension can extend up to two years on top of potential prison time and a permanent felony record.

How Texas Administrative License Revocation Works

Texas operates a two-track system. The ALR process is completely separate from the criminal case and moves faster. 

The officer confiscates the license at the scene and issues a temporary permit valid for 40 days. After that, the suspension begins unless you have requested a hearing within 15 days. 

Winning an ALR hearing does not resolve the criminal case, but it preserves driving privileges while the defense is being built.

Other Penalties That Come With a Conviction

Mandatory Alcohol Awareness Classes

Every minor convicted under the zero-tolerance law must complete an alcohol awareness program approved by the Texas Department of State Health Services. 

These programs typically run 12 hours and must be completed within a court-specified timeframe. In many underage cases, the court also orders the minor’s parents to attend.

Community Service Requirements

A first offense under the zero-tolerance law requires between 20 and 40 hours of community service at a nonprofit or government agency. That number increases with each subsequent offense. Proof of completion is submitted to the court and enforced, and missing the deadline can trigger additional hearings and penalties.

Jail Time Risk for Drivers 17 & Older

Most first and second DUIM offenses for minors do not result in jail time, but the risk escalates quickly when the charge is a full DWI or when prior offenses exist.

• A first DUIM under the zero-tolerance law is a Class C misdemeanor, with only fines. 
• A first DWI (BAC of 0.08% or higher) is a Class B misdemeanor carrying up to 180 days in jail. 
• A second DWI is a Class A misdemeanor, with a penalty of 30 days to one year. A third DWI is a third-degree felony carrying 2 to 10 years in state prison.

For drivers 17 and older, Texas courts can try cases in adult criminal court depending on the severity of the offense and the minor’s history. A DWI with a child passenger under 15 in the vehicle elevates the charge to a state jail felony regardless of prior offenses.

What Are the Real Chances of Dismissal?

Common Defense Strategies That Can Lead to Dismissal

The most effective defense strategies in underage DWI cases target how the stop was conducted, how BAC was measured, and whether proper procedures were followed. If the officer lacked reasonable suspicion for the stop, all evidence collected afterward may be inadmissible. 

Breathalyzer devices must be properly calibrated and operated by a certified technician, and blood samples must be drawn, stored, and transported in accordance with documented protocols. Deviations at any point give a defense attorney grounds to challenge the evidence directly.

Prosecutors in underage cases are often willing to negotiate for first-time offenders with no prior record. Deferred disposition, which results in the charge being dismissed upon successful completion, is sometimes available for DUIM cases under the zero-tolerance law but is far less common for full DWI charges.

How BAC Testing Errors Can Weaken the Case Against You

Breathalyzer results depend on proper calibration, maintenance logs, and certified operator training. If any of those requirements were not met on the day of the arrest, the reading can be challenged. Blood tests are more accurate but require a qualified draw, correct storage, proper preservatives, and a documented chain of custody. 

Officers are also required to conduct a 15-minute observation period before administering a breath test to account for mouth alcohol from mouthwash, acid reflux, or medications. If that observation period was skipped or shortened, it becomes a viable challenge point.

Texas Criminal Defense Group Can Help With Your Underage DWI Case

At Texas Criminal Defense Group, we are led by Stephen Hamilton, a board-certified criminal law attorney with 27 years of experience, and DWI cases make up over 64% of our caseload. From the 15-day ALR deadline to preserving critical evidence, we know that experienced representation from day one shapes the entire outcome.

We back every case with a thorough evidence review, including dashcam footage, police reports, and an in-house forensic toxicologist who challenges chemical evidence at the scientific level. With offices across Texas and flexible payment options, get in touch to schedule a free consultation and understand your options.

Schedule Your Free Consultation →

Frequently Asked Questions (FAQs)

Can a DWI Under 21 in Texas Be Expunged From Your Record?

A DWI conviction cannot be expunged in Texas, but if the case was dismissed or resulted in an acquittal, expunction may be available. For first-time misdemeanor convictions, the Texas Second Chance Law (HB 3016) allows the record to be sealed through an Order of Nondisclosure after a two- to five-year waiting period. Consulting with a criminal defense attorney is the only reliable way to determine what options apply to a specific case.

Do You Automatically Lose Your License After a DWI Under 21 in Texas?

A DWI arrest triggers the ALR process, which is separate from the criminal case. The officer confiscates the license and issues a temporary permit valid for 40 days, and you have 15 days from the arrest to request an ALR hearing to preserve your driving privileges. Missing that deadline means the suspension proceeds automatically with no opportunity to contest it.

Can a Minor Be Charged With Both DUIM and DWI at the Same Time in Texas?

A minor can face exposure under both statutes, but prosecutors typically pursue whichever charge carries the strongest evidence and the most serious consequences. If the BAC is 0.08% or higher, the DWI charge takes precedence. Being under 21 does not provide protection from the Texas DWI law. It only adds additional exposure.

How Long Does a DWI Under 21 Stay on Your Record in Texas?

Without expunction or an Order of Nondisclosure, a DWI conviction remains on the criminal record permanently. Texas courts also consider prior DWI history with no statute of limitations for enhancement, meaning a second offense at 22 is treated as a second offense even if the first occurred at 17. The decisions made in the first two weeks after an arrest carry more weight on the final outcome than almost anything that follows.

Why Choose Texas Criminal Defense Group for an Under-21 DWI Case?

Texas Criminal Defense Group is led by Stephen Hamilton, a board-certified criminal law attorney with 27 years of experience, and DWI cases account for over 64% of the firm’s caseload. Every case is supported by an in-house forensic toxicologist who reviews blood test results, lab procedures, and sample-handling records. Our team obtains all police reports and video footage and transcribes everything to build a strong defense based on what the evidence actually shows.

 

*Disclaimer: This article is provided for informational purposes only and does not constitute legal advice. Reading this content does not create an attorney-client relationship. For advice regarding your specific situation, please contact Texas Criminal Defense Group.