What Is the Legal BAC Limit in Texas?

 Posted on January 19, 2026 in Criminal Defense

In Texas, the legal blood alcohol concentration (BAC) limit for most drivers is 0.08. This number matters because reaching or exceeding it can lead to an arrest. As of 2026, Texas continues to aggressively enforce DWI laws, and drivers can face serious penalties even when they think their alcohol level is low.

If you are being investigated or charged, The Meza Law Firm, PLLC can help you defend yourself. Our North Richland Hills, TX DWI defense lawyer will explain the limitations of BAC testing and how they could have negatively impacted your case.

What Does BAC Mean Under Texas Law?

BAC measures how much alcohol is in someone’s bloodstream. It is shown as a number that represents grams of alcohol per 100 milliliters of blood.

Texas defines intoxication under Texas Penal Code § 49.01. A person can be considered intoxicated if their BAC is 0.08 or higher. A person can also be considered intoxicated even with a lower BAC if alcohol affects their normal mental or physical abilities.

For example, an officer may observe slurred speech, slow reactions, or trouble following simple instructions during a traffic stop. Officers may also rely on field sobriety tests and driving behavior, such as drifting between lanes. Even if a driver believes they feel normal, an arrest can still be made based on these observations.

Are There Different BAC Limits for Certain Drivers in Texas?

Texas law sets lower BAC limits for certain drivers because of added safety concerns. Examples include drivers under the age of 21, who are subject to a zero-tolerance rule, and commercial drivers, who can face penalties at a BAC of 0.04.

For these drivers, even a small amount of alcohol can trigger an arrest, license action, or other serious consequences.

How Is BAC Measured During a Texas DWI Stop?

BAC is usually measured through breath or blood testing. Breath tests are often given at the roadside or police station. Blood tests are usually taken at a medical facility and are not as common.

Both tests must follow strict rules. Problems with equipment, timing, or how samples are handled can affect the results. These issues are often reviewed closely in DWI cases.

How Can a DWI Arrest Affect Immigration Status?

For non-citizens, a DWI arrest can raise serious immigration concerns. Criminal charges can affect visas, green cards, or future applications. Understanding both criminal and immigration consequences is critical. Acting quickly can help protect a person’s legal status.

When Should You Talk to a DWI Defense Lawyer?

You should speak with a lawyer as soon as possible after a DWI stop or arrest. Acting early can help protect your rights and preserve evidence that may be lost or overlooked as time passes.

An attorney can review BAC test results, examine how the traffic stop and testing were handled, and explain how Texas DWI laws apply to your situation. Early legal guidance can also help you avoid mistakes that may affect both your criminal case and your driver’s license.

Contact Us Today To Speak With Our Tarrant County, TX DWI Defense Attorney

If you are facing a DWI charge, strong legal guidance matters. At The Meza Law Firm, PLLC, you work directly with an attorney who has extensive experience in both criminal law and immigration law. We provide personalized, one-on-one guidance, and our office is structured with just one lawyer and two assistants, so your case always gets direct attention.

We understand the special challenges immigrants face after an arrest and what must be done immediately to safeguard their immigration status. Call 817-732-6392 to speak with a North Richland Hills, TX DWI defense lawyer about your situation and next steps. Hablamos Español.