Texas DWI Laws: What You Need To Know

A DWI charge in Texas is not a minor inconvenience; it can cost you your driver’s license, your job, and your freedom. After you’re arrested, things move fast, and you need to make sure you’re not leaving important details behind. 

If you’ve recently been arrested or charged with driving while intoxicated, knowing exactly how Texas DWI laws work is the first step toward protecting yourself. This guide breaks down what the law actually says, what the penalties look like, and what your options are at each stage.

Continue reading about the Texas DWI laws, or, if you need a Houston DWI lawyer to protect your freedom, contact Turnbull Legal Group today at (832) 314-3232 for a free consultation. Former State District Court Judge and Chief Prosecutor Ned Turnbull has been working Texas DWI cases from every angle for more than 30 years. When the stakes are high, it helps to have a judge in your corner. 

What is a DWI under Texas law?

Under the Texas Penal Code § 49.04, a person commits a DWI offense by operating a motor vehicle in a public place while intoxicated. Texas law defines “intoxicated” in two ways:

1. Having a blood alcohol concentration (BAC) of 0.08% or higher; or 
2. Lacking the normal use of mental or physical faculties due to alcohol, drugs, or any combination of both.

The second definition is massively important. It means you can be convicted of DWI in Texas even if your BAC is below the legal limit if an officer or the evidence suggests your faculties were impaired.

Additionally, Texas applies stricter BAC thresholds to certain drivers. Commercial vehicle operators face a 0.04% limit, and under the state’s zero-tolerance policy for drivers under 21, any detectable amount of alcohol in the system is enough to trigger a charge. This means that technically, DWI law in Texas applies differently depending on who’s behind the wheel.

DWI vs DUI in Texas: What’s the difference?

A common source of confusion is whether Texas charges drivers with a DWI or a DUI. Many people use these terms interchangeably, but in Texas, they’re distinct charges. 

• The short version is this: DUI in Texas applies exclusively to minors under 21 who are caught driving with any detectable alcohol in their system, even below the 0.08% threshold. 
• Adults found operating a motor vehicle while “intoxicated” are charged with DWI. Minors can also be charged with DWI if they’re driving over the legal limit. 

For a deeper breakdown, see our full guide on DWI vs DUI in Texas

Is a DWI a felony now in Texas in 2026?

The short answer is: it depends. Most DWI charges in Texas begin as misdemeanors, but several circumstances can make them felony-level offenses. Generally speaking, a DWI becomes a felony when any of the following apply:

• It is your third DWI offense or more
• You had a child passenger (under 15) in the vehicle
• You caused serious bodily injury to another person (Intoxication Assault)
• You caused the death of another person (Intoxication Manslaughter)
• You were driving a commercial vehicle and held a CDL at the time of the stop (certain circumstances)

Felony DWI charges in Texas carry state prison time, not time in a county jail. The difference matters both legally and practically; a felony conviction affects your civil rights, your ability to own a firearm, and your employment prospects in ways that a misdemeanor typically does not. And while any DWI conviction can follow you for life, the consequences of a felony conviction go far beyond those of misdemeanor DWI. 

Continue reading: Is a DWI a felony?

DWI laws and penalties by offense level

Texas DWI penalties increase significantly with each offense and with the presence of aggravating factors. The table below outlines the standard penalty ranges for the most common charge types. It’s worth noting these are ranges, not guarantees. Outcomes will vary based on the facts of your case, the jurisdiction, the judge, and the quality of your DWI attorney.

This table shows charge classification and the worst-case scenario for you: maximum incarceration. If you want to fight the maximum sentence, you need to hire an attorney who knows how to fight and win and has experience in your local courtrooms.

First offense DWI in Texas

Even a DWI in Texas first offense can come with serious consequences that many people underestimate. A standard first offense is classified as a Class B misdemeanor, which carries a minimum of 72 hours in county jail, fines up to $2,000, and a license suspension of 90 days to a year. 

If your BAC was 0.15% or higher at the time of the stop, the charge is elevated to a Class A misdemeanor with higher fines and up to a year in jail. Beyond the immediate penalties, a DWI conviction becomes part of your permanent criminal record and can affect employment, housing applications, professional licenses, and auto insurance rates for years to come.

DWI over .15 in Texas

Texas treats a BAC of 0.15% or higher as an aggravated circumstance at the first offense level. A standard first offense DWI begins as a Class B misdemeanor, but the moment your BAC reaches .15, it becomes a Class A (the same classification as a second offense). 

Beyond the elevated charge classification, courts may impose additional conditions like mandatory ignition interlock device installation and longer probation periods. A high BAC reading also weakens certain defenses, which is why it’s essential to have an attorney who can scrutinize how the chemical test was administered, whether the equipment was properly calibrated, and any chain of custody issues that the evidence might have had at the precinct and lab.

For more details on what can elevate a DWI charge, see our full guide on aggravated DWI

DWI second offense in Texas

A second DWI in Texas is classified as a Class A misdemeanor and carries a mandatory minimum of 30 days in jail — a requirement that cannot be waived with probation alone. Fines increase to $4,000, and your license can be suspended for up to two years. 

The State will use your prior conviction as evidence of a pattern, and prosecutors tend to be less willing to negotiate. If there is a third DWI offense at any point in your history, the charge escalates to a felony. The stakes go up considerably, and so does the importance of mounting an aggressive, experienced defense early.

What happens to your driver’s license after a Texas DWI?

One of the most immediate consequences of a DWI arrest, before any conviction, is the threat of an Administrative License Revocation (ALR) Hearing. Texas’s ALR program operates separately from the criminal court process. When you are arrested for DWI and either fail or refuse a chemical test, the Department of Public Safety will automatically move to suspend your license.

And you have only 15 days from the date of your arrest to request an ALR hearing to contest the suspension. 

If you do not request an ALR hearing within the required time frame, you waive your right to contest the suspension, and your driver's license suspension will take effect automatically.

Although many individuals miss this critical deadline, an ALR hearing can provide a valuable strategic advantage. It offers an early opportunity to evaluate the State's evidence, question law enforcement officers and other witnesses under subpoena, and gain insight into the prosecution's case before the criminal proceedings begin. Information obtained during the hearing can help your attorney identify potential defenses, preserve testimony, and develop a stronger strategy for your criminal case from the outset.

Suspension timelines under Texas ALR rules are generally as follows:

1. Failed breath or blood test, first offense: 90-day suspension
2. Refused breath or blood test, first offense: 180-day suspension
3. Failed test with a prior DWI conviction: 1-year suspension
4. Refused test with a prior DWI conviction: 2-year suspension

An occupational license may be available during suspension, allowing you to drive to work, school, or essential activities, but whether you qualify will depend on your driving history and the nature of the suspension.

Ignition interlock devices and other DWI conditions

Texas courts have broad authority to impose conditions on DWI defendants, both as a condition of bond and as part of sentencing or probation. One of the most common is the ignition interlock device (IID), a breathalyzer installed on your vehicle that requires a clean breath sample before the engine will start. In some cases, courts require an IID as a condition of a bond immediately after arrest, before any conviction.

IIDs are often mandatory in the following situations:

• Second or subsequent DWI convictions
• First offense DWI with a BAC of 0.15% or higher
• DWI with a child passenger
• Cases where the court orders it as a condition of probation or bond

The cost of installing, renting, and maintaining an IID falls on the defendant. If you fail an IID breath test or tamper with the device, it can result in a probation violation and further criminal consequences.

Defending against Texas DWI charges

The good news for those facing DWI charges is that a DWI charge is not a conviction. The State bears the burden of proving every element of the offense beyond a reasonable doubt, and there are legitimate, frequently successful defenses that a skilled attorney can pursue. The right strategy depends entirely on the facts of your specific case, but some of the most effective defenses often include:

1. Challenging the legality of the traffic stop (was there valid reasonable suspicion?)
2. Challenging field sobriety test administration (were the standardized tests performed correctly?)
3. Challenging breath test accuracy (was the Intoxilyzer properly calibrated and maintained?)
4. Challenging blood test chain of custody or lab procedures (was the evidence kept in environments that ensured accurate results?)
5. Suppressing unlawfully obtained evidence through pretrial motions (was all evidence obtained by the book?)

As a former State District Court Judge and Chief Prosecutor, Ned Turnbull approaches DWI defense with a perspective most attorneys simply cannot offer. He has presided over cases as a judge and prosecuted them as a district attorney. He knows exactly what the State needs to prove, where their evidence is most vulnerable, and how judges in Harris, Montgomery, and Brazos Counties evaluate these cases. That institutional knowledge is the Turnbull Edge, and it informs every motion filed and every decision made on your behalf.

Texas DWI laws FAQ

What happens if I refuse a breath or blood test in Texas?

Refusing a chemical test in Texas triggers an automatic license suspension under the state’s implied consent law. Refusal also cannot be used as a guaranteed defense in court; officers can seek a warrant to compel a blood draw, and the refusal itself can be referenced at trial. The decision to refuse is complex and situation-dependent. If you’ve already refused, contact an attorney immediately and request your ALR hearing before the 15-day window closes.

Can a first-offense DWI in Texas be dismissed or expunged?

Under certain circumstances, yes. Dismissal may be possible if pretrial motions succeed in suppressing key evidence or if the State’s case has significant weaknesses. Some first-time offenders may be eligible for deferred adjudication or a pretrial diversion program, which can lead to dismissal and, in some cases, expunction. 

Eligibility depends on the specifics of the charge, the jurisdiction, and the defendant’s history. Dismissal and expunction aren’t automatic; they require a defense strategy built around challenging the State’s evidence from day one.

Do DWI laws apply if I wasn't driving on a public road?

Texas DWI law requires that you were operating a motor vehicle in a public place at the time of the stop. "Public place" is defined broadly under Texas law and includes roads, parking lots, and other areas accessible to the public, which means it does not have to be a highway or a named street. 

Private property, like your own driveway, may fall outside the definition in some circumstances, but you can still get a DWI in your driveway if you were seen by a witness driving from a public roadway onto it. This isn’t an effective DWI defense all that often, but it’s always worth raising the issue with your attorney.