The legal blood alcohol concentration (BAC) limit for most drivers in Texas is 0.08%.

Quick Scoop: Texas Legal Alcohol Limit

  • For drivers 21 and over, you are considered legally intoxicated at a BAC of 0.08% or higher while operating a motor vehicle.
  • For commercial drivers (CDL holders), the legal limit is lower: 0.04% BAC.
  • For drivers under 21 , Texas is effectively zero tolerance : any detectable amount of alcohol in your system while driving can lead to charges.

Even below 0.08%, if your normal mental or physical faculties are impaired, you can still be treated as intoxicated under Texas law.

Mini Basics: What That Means For You

  • 0.08% BAC or more (21+): You can be charged with DWI, face fines, license suspension, and possible jail time.
  • 0.04%+ with a commercial license: You risk DWI charges and serious action against your commercial license.
  • Under 21 with any alcohol: You can face DUI/DWI-type consequences even if you are under 0.08%.

BAC is affected by weight, sex, how fast you drink, food in your stomach, and more, so there is no safe “number of drinks” that guarantees you’re under the limit.

Important Note

This is general information, not legal advice. If you’re anywhere close to the limit, the safest move—for you and everyone else—is not to drive and to use a ride-share, taxi, or designated driver instead.

TL;DR: In Texas, the legal limit is 0.08% BAC for most drivers , 0.04% for commercial drivers , and essentially zero for drivers under 21.

Information gathered from public forums or data available on the internet and portrayed here.