Concurrent is the default under § 3.03(a)
Two statutes decide whether Texas sentences stack. Penal Code § 3.03 governs offenses from the same criminal episode that are tried in one proceeding, and it makes concurrent sentencing the default. Code of Criminal Procedure art. 42.08 governs the broader power to cumulate — to order that a sentence in one case begin only after the sentence in another has ceased to operate. The interaction is simple to state: art. 42.08 gives the judge general authority to stack, and § 3.03 removes that authority whenever the offenses share a criminal episode and are prosecuted together, except for a short list of enumerated offenses.
Because concurrent is the default, adding a second or third count to a single trial usually does not increase the total time a defendant faces — the counts run together, and the longest one controls. The stakes of the concurrent-versus-consecutive question are therefore highest in two settings: cases that qualify for a § 3.03(b) exception, and cases charged and resolved separately so that art. 42.08 discretion applies.
What counts as the same criminal episode
The concurrent rule applies only when the offenses arise from the same criminal episode. Penal Code § 3.01 defines that term broadly:
- Same transaction or common scheme (§ 3.01(1))
- Two or more offenses committed pursuant to the same transaction, or pursuant to two or more transactions that are connected or that constitute a common scheme or plan. A burglary and an assault committed during it are a classic example.
- Repeated commission of the same or similar offenses (§ 3.01(2))
- The repeated commission of the same or similar offenses — for instance, a series of thefts or drug deliveries of the same character, even across separate dates.
Whether counts fall inside one episode is a fact question decided on the record. If they do not — if the offenses are genuinely unrelated — then § 3.03 does not apply at all, and the judge's art. 42.08 discretion controls whether the sentences stack.
What is a single criminal action
Section 3.03 applies only when same-episode offenses are prosecuted in a “single criminal action.” The Court of Criminal Appeals defined that phrase in LaPorte v. State: a defendant is prosecuted in a single criminal action whenever allegations and evidence of more than one offense arising out of the same criminal episode are presented in a single trial or plea proceeding, whether pursuant to one charging instrument or several. LaPorte v. State, 840 S.W.2d 412, 415 (Tex. Crim. App. 1992).
Two practical points follow. First, resolving several cause numbers in one plea hearing is still a single criminal action, so the sentences run concurrently unless an exception fits. Second, if the State instead tries or resolves the cases in genuinely separate proceedings, § 3.03's concurrent command does not apply, and art. 42.08 discretion governs whether the sentences stack.
The stacking exceptions under § 3.03(b)
Section 3.03(b) lists the offenses a court may run consecutively even when they share a criminal episode and are tried together. In Patterson v. State, the Court of Criminal Appeals summarized the core categories as intoxication manslaughter and specified sexual offenses committed against a child younger than 17. Patterson v. State, 152 S.W.3d 88, 91–92 (Tex. Crim. App. 2004). The Legislature has amended the list over time, so always check the current statute for the exact offenses and effective dates.
| Exception category | Representative statutes | Governing subsection |
|---|---|---|
| Intoxication assault / intoxication manslaughter | Penal Code §§ 49.07, 49.08 | § 3.03(b)(1) |
| Sexual offenses against a child under 17 | Penal Code §§ 21.02, 21.11, 22.011, 22.021, 25.02, 43.25, 43.26 | § 3.03(b)(2) |
| Trafficking of persons / compelling prostitution | Penal Code §§ 20A.02, 20A.03, 43.05 | § 3.03(b)(3) |
Even inside § 3.03(b), the discretion is limited. In Miles v. State, the court held that the statute lets a court stack qualifying offenses only within the same category; it cannot stack an offense listed in one subsection with an offense listed in a different subsection, and any non-qualifying counts must still run concurrently. Miles v. State, 468 S.W.3d 719, 722–24 (Tex. App.—Houston [14th Dist.] 2015, no pet.).
Separate cases and article 42.08 discretion
When the offenses are not part of the same episode, or same-episode offenses are prosecuted in separate actions, the general cumulation statute controls. Article 42.08(a) provides that when a defendant has been convicted in two or more cases, the judgment in the second and subsequent convictions may either be that the sentence begins when the sentence in the preceding conviction has ceased to operate, or that the sentence runs concurrently with it.
Texas courts describe that power as broad: so long as cumulation is authorized by law, the decision to stack lies within the trial court's discretion and is difficult to disturb on appeal. The judge does not have to make particular findings — the choice is a normative sentencing decision, like selecting a term within the punishment range.
In practice, prosecutors most often ask for stacking in cases with multiple victims, repeated conduct, or an offense committed while the defendant was already on bond, probation, or parole. Defense counsel counters by presenting mitigating circumstances and by holding the State to the specificity a cumulation order requires. Because the decision is discretionary, the sentencing hearing — not the plea — is frequently where the concurrent-versus-consecutive question is actually won or lost.
How courts apply § 3.03 and § 42.08
Three decisions frame the analysis this calculator models:
- LaPorte v. State, 840 S.W.2d 412 (Tex. Crim. App. 1992). Once the facts show a single criminal action based on same-episode charges, the trial court may not order consecutive sentences. LaPorte also held that an improper cumulation order is essentially a void sentence that can be challenged at any time, even without a trial objection; the remedy is to reform the judgment to delete the stacking.
- Patterson v. State, 152 S.W.3d 88 (Tex. Crim. App. 2004). Section 3.03 makes same-episode sentences concurrent in general, but the Legislature created exceptions for intoxication manslaughter and enumerated child sex offenses, for which consecutive sentences are permitted. Patterson also cautioned that the statute does not authorize “stop-action” prosecution: a conviction bars a second conviction for conduct demonstrably part of the same greater offense.
- Miles v. State, 468 S.W.3d 719 (Tex. App.—Houston [14th Dist.] 2015, no pet.). Applying § 3.03(b)'s limits, the court held that a sentence for compelling prostitution could not be stacked on a sentence for sexual assault of a child because the offenses fell under different subsections; the sentences had to run concurrently.
Read together, the cases show the pattern: concurrent is the floor, § 3.03(b) is a narrow and category-bound exception, and art. 42.08 discretion appears only when § 3.03 does not.
Cumulation orders must be specific
When a court does stack sentences, the cumulation order has to be precise. Texas appellate courts look for the earlier cause number, the court, the date, the offense, and the sentence, so the order can be enforced without guesswork. And because the oral pronouncement of sentence controls over the written judgment, a stacking order that appears only in the paperwork — but was not pronounced in open court — cannot stand. Defects of this kind are routinely corrected on appeal by deleting the cumulation language and letting the sentences run concurrently.
Concurrent vs. consecutive: what it means for your time
The arithmetic is the easy part; the consequences are not. Concurrent sentences produce a single controlling term, while consecutive sentences add up.
| Two sentences | How they run | Total time |
|---|---|---|
| 10 years + 5 years | Concurrent (§ 3.03(a) default) | 10 years (the longer term) |
| 10 years + 5 years | Consecutive (stacked) | 15 years |
| Life + 20 years | Concurrent | Life |
| Life + 20 years | Consecutive | Life, then 20 years |
Consider a defendant convicted of two counts from one robbery spree and sentenced to 12 years and 8 years. If the counts share a criminal episode and are tried together, § 3.03(a) makes the total 12 years. If the State instead indicts and tries them as separate cases, article 42.08 lets the judge stack them for a 20-year total. The same two numbers, a different procedural posture, and an eight-year difference in exposure — which is why the questions this calculator asks matter so much. Federal cases follow a different framework entirely; see our federal sentencing guidelines calculator for how counts group and run in federal court.
Stacking also affects parole. Each stacked sentence is treated separately for parole-eligibility purposes, so a defendant does not begin earning eligibility on the second sentence until the first has been served to its parole threshold. That is why the difference between concurrent and consecutive can matter far more than the raw numbers suggest — and why an accurate cumulation analysis, and a lawyer arguing against stacking at sentencing, can change the practical length of a prison term. Use the results above as a starting point, then talk through the specifics with counsel.