Facing criminal charges in Texas can feel like the whole system is stacked against you. An affirmative defense flips part of that equation. Instead of only poking holes in the State's case, it lets you present your own evidence to excuse or justify what happened. Understanding how it works could change the outcome of your case. If charges are hanging over you, call Garcia Garcia & Mullen Criminal Defense & Injury Lawyers at (214) 214-1000 for a free case evaluation.
An affirmative defense is a legal argument in which the defendant admits the conduct happened but offers a reason the law should not hold them criminally responsible for it. It does not say "I didn't do it." It says "I did the act, but here is why I should not be punished for it."
That distinction matters because of who carries the burden. In a normal criminal case, the State must prove every element of the offense beyond a reasonable doubt, and the defendant does not have to prove anything. An affirmative defense shifts a piece of that responsibility. Once the defendant raises it and puts on supporting evidence, the defendant must prove the affirmative defense by a preponderance of the evidence, meaning it is more likely true than not. That is a far lower bar than beyond a reasonable doubt, but the responsibility to meet it rests with the defense.
This tradeoff is exactly why strategy matters so much. Raising an affirmative defense is a decision, not a reflex, and it should be made with an attorney who knows Texas criminal law inside and out.
Texas law draws a clear line between two categories, and the difference decides who has to prove what.
Under Section 2.03 of the Texas Penal Code, an ordinary "defense" is signaled in the statutes by the phrase "It is a defense to prosecution." Once a defendant produces some evidence raising that kind of defense, the burden stays on the State. The prosecution then has to disprove the defense beyond a reasonable doubt. Self-defense is the most common example, and the defendant never has to prove it is true, only raise it with enough evidence to put it before the jury.
Under Section 2.04 of the Texas Penal Code, an "affirmative defense" is signaled by the phrase "It is an affirmative defense to prosecution." Here the burden shifts. The issue is not submitted to the jury unless evidence supporting the defense is admitted, and if it is submitted, the court instructs the jury that the defendant must prove the affirmative defense by a preponderance of the evidence.
In plain terms: with an ordinary defense, the State has to knock it down. With an affirmative defense, you have to build it up. Knowing which category applies to your situation is the first strategic call in the case, and getting it wrong can cost you.
Texas recognizes several true affirmative defenses, each labeled that way in the Penal Code. These are the ones where the defendant concedes the conduct and carries the burden of proof.
Insanity (Section 8.01). It is an affirmative defense that, at the time of the conduct, the defendant, as a result of a severe mental disease or defect, did not know their conduct was wrong. The law is narrow. A mental illness alone is not enough; the question is whether the person understood that what they were doing was wrong. Texas also excludes conditions shown only by repeated criminal or antisocial behavior.
Duress (Section 8.05). It is an affirmative defense that the defendant engaged in the conduct because they were compelled to by a threat of imminent death or serious bodily injury to themselves or another person. The threat has to be immediate and serious, and the compulsion must be the kind that would move a person of reasonable firmness. It does not apply if the defendant recklessly placed themselves in the situation.
Mistake of law (Section 8.03). In limited circumstances, it is an affirmative defense that the defendant reasonably believed the conduct was legal because they relied on an official statement of the law or a written interpretation from a public official charged with interpreting it. This is a narrow provision and rarely applies, but it exists.
Involuntary intoxication (Section 8.04). Texas courts recognize involuntary intoxication as an affirmative defense when the defendant took an intoxicant without knowing what it was or without any independent judgment, and as a result did not know the conduct was wrong. Being drugged without consent is the classic scenario. Voluntary intoxication, by contrast, is not a defense in Texas.
Each of these requires real evidence, often expert testimony, and each demands careful handling. Presenting an affirmative defense the wrong way can weaken your whole position, which is why preparation and timing are everything. Our attorneys build these defenses with the seriousness they demand. Reach us at (214) 214-1000 to talk through your options.
People often assume any argument that admits conduct must be an affirmative defense. In Texas, several well-known defenses actually fall under Section 2.03, meaning the State keeps the burden of disproving them beyond a reasonable doubt.
Self-defense (Sections 9.31 and 9.32). Self-defense is a justification and an ordinary defense, not an affirmative defense. You raise it with evidence, and then the prosecution must disprove it beyond a reasonable doubt. This is a powerful position for a defendant because the burden never truly leaves the State.
Entrapment (Section 8.06). Entrapment is labeled "It is a defense to prosecution," which makes it an ordinary defense rather than an affirmative one. It applies when a law enforcement agent induced the conduct using persuasion or methods likely to cause an otherwise unwilling person to commit the offense. Simply giving someone the opportunity to break the law is not entrapment.
Mistake of fact (Section 8.02). A reasonable but mistaken belief about a fact can be a defense when it negates the mental state the offense requires. It is labeled as a defense, so the burden stays with the State.
The label in the statute is not a technicality. It decides who has to convince the jury, and that can be the difference between a conviction and an acquittal.
An affirmative defense does not appear on its own. It has to be raised, supported, and argued at the right moments in the case.
First, the defense must put on evidence supporting it. Under Section 2.04, the issue is not even submitted to the jury unless evidence supporting the defense is admitted at trial. That evidence can come from witnesses, records, or expert testimony, depending on the defense.
Second, if the evidence clears that threshold, the judge instructs the jury on the defense. The court tells jurors that the defendant must prove the affirmative defense by a preponderance of the evidence. The jury then weighs whether the defense is more likely true than not.
Third, timing and notice can matter. Some defenses, such as insanity, come with specific procedural rules and notice requirements that must be handled early in the case. Missing a deadline or failing to preserve the issue can shut the door on a defense before trial even begins.
This is why an affirmative defense is not something to improvise at the last minute. It is a strategy that is planned, developed, and executed over the life of a case.
Choosing to raise an affirmative defense is one of the most consequential decisions in a criminal case. Because it concedes that the conduct happened, it can close off other arguments. If the jury does not accept the defense, the concession is still on the record. That is a real risk, and it has to be weighed against the strength of the evidence and the alternatives.
An experienced criminal defense attorney evaluates whether an affirmative defense fits the facts, whether the supporting evidence is strong enough to meet the burden, and how raising it interacts with the rest of the case. The earlier that analysis happens, the more room there is to gather evidence, line up experts, and protect your rights.
The prosecution has resources and time. You deserve a defense that meets that pressure with preparation and aggression. At Garcia, Garcia & Mullen, that is exactly how we approach every case, from the first phone call to the final verdict.
A defense, under Section 2.03, must be disproven by the State beyond a reasonable doubt once you raise it. An affirmative defense, under Section 2.04, requires you to prove it by a preponderance of the evidence.
No. Self-defense is a justification and an ordinary defense under Sections 9.31 and 9.32. You raise it with evidence, and then the prosecution must disprove it beyond a reasonable doubt.
The defendant does. Once the defense is raised and supported by evidence, the defendant must prove the affirmative defense by a preponderance of the evidence, meaning it is more likely true than not.
No. Entrapment is labeled "It is a defense to prosecution" under Section 8.06, which makes it an ordinary defense. It applies when law enforcement induced the conduct rather than simply providing an opportunity to commit it.
Often, yes, but it takes careful strategy. Some defenses can conflict with each other, and raising an affirmative defense concedes the conduct, which may undercut a defense that denies it.
If the jury finds you proved the affirmative defense by a preponderance of the evidence, the result is an acquittal on that charge. The defense excuses or justifies the conduct in the eyes of the law, so even though the act occurred, you are not held criminally responsible for it.
An affirmative defense can be the strongest tool in your case, but only when it is chosen and built correctly. The wrong move at the wrong time can do lasting damage, so the decisions you make now matter. Attorney Lukas Garcia and the team at Garcia Garcia & Mullen Criminal Defense & Injury Lawyers fight to protect your freedom, your record, and your future. Do not face the State alone. Call (214) 214-1000 today for a free case evaluation and let us start building your defense.
Phone: (214) 214 1000
Phone: (214) 214 1000
