
Criminal Defense North Texas
It is a common trope in movies and television: a defendant claims they were so blacked out or under the influence that they “didn’t know what they were doing,” leading to a dramatic acquittal. However, in a Texas courtroom, reality paints a much harsher picture.
At Beltz Law Group, we frequently encounter clients who believe that voluntary intoxication can negate the intent required to commit a crime. Under the Texas Penal Code, this is almost never the case. If you are facing charges, understanding the nuances of Section 8.04 is critical to your defense strategy.
The Harsh Reality of Section 8.04(a)
The baseline for Texas law is found in Sec. 8.04(a), which states:
- “Voluntary intoxication does not constitute a defense to the commission of crime.”
In plain English, this means you cannot argue that you lack “criminal intent” simply because you were drunk or high. Texas law holds individuals accountable for the decision to consume a substance. Whether you had one drink too many or experimented with a controlled substance, the law views the subsequent criminal act as a direct consequence of that initial voluntary choice.
Mitigation vs. Exoneration: Sec. 8.04(b) and (c)
While intoxication cannot get your charges dismissed or result in a “not guilty” verdict, it may play a role during the sentencing phase of a trial.
Section 8.04(b) allows for evidence of temporary insanity caused by intoxication to be introduced. It is important to distinguish this from a standard defense:
- A Defense: Aimed at an acquittal (not guilty).
- Mitigation: Aimed at reducing the severity of the punishment (a lighter sentence).

Criminal Defense North Texas
To successfully use intoxication in mitigation, the defense must prove that the defendant’s level of intoxication reached the threshold of “temporary insanity.” This means that, at the time of the offense, the individual did not know their conduct was wrong or was incapable of conforming their conduct to the law due to the substance’s effects.
If this evidence is presented, Section 8.04(c) requires the judge to instruct the jury on how to weigh this information. The jury can then decide if the defendant’s mental state warrants a lesser penalty, though the underlying conviction remains on their record.
How Texas Defines “Intoxication”
The legal definition provided in Sec. 8.04(d) is broad and all-encompassing:
“Intoxication means disturbance of mental or physical capacity resulting from the introduction of any substance into the body.”
This definition does not limit intoxication to alcohol or illegal drugs. It can include:
- Prescription medications.
- Over-the-counter drugs.
- Inhalants or chemical vapors.
If you chose to take the substance—even if you didn’t expect it to affect you as strongly as it did—it is legally considered “voluntary.”
Are There Exceptions?

Criminal Defense Attorney
The only significant loophole to this rule is involuntary intoxication. This occurs if you were drugged without your knowledge or took a prescription medication that had an utterly unpredictable “medically intoxicating” effect you weren’t warned about. However, proving involuntary intoxication is an uphill battle that requires expert testimony and a rigorous evidentiary trail.
Why You Need Skilled Legal Counsel
Because Texas law is so restrictive regarding intoxication, “winging it” with an excuse about being under the influence can actually backfire, essentially handing the prosecution an admission of guilt.
At Beltz Law Group, we look beyond the intoxication to find weaknesses in the prosecution’s evidence, procedural errors by law enforcement, or legitimate affirmative defenses that can actually protect your future.







