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When someone’s convicted of more than one offense, one of the biggest worries is whether those sentences run at the same time or stack on top of each other.
With concurrent sentences, everything’s served simultaneously. In that case, the longest term basically decides how long the person’s actually locked up. Consecutive sentences work differently. This means one sentence has to finish before the next one even starts.
That gap between the two setups can be the difference between five years in prison and 20 years. Figuring out what tends to drive that choice is the first thing anyone trying to navigate a multi-count criminal case should understand.
The federal default rule and when it applies
Under 18 U.S.C. § 3584, multiple sentences handed down at the same time tend to run concurrently by default, unless a judge clearly orders otherwise or if a statute says they must run consecutively. But when the sentences are imposed at different moments, that default turns around. In that setup they run consecutively unless the court says differently. In fact, this mismatch matters a lot more than most folks realize.
Defendants with several charges often don’t fully get how much this issue drives plea discussions until a lawyer spells out the risk numbers, point by point, in a plain calculation.
Firms such as Shreveport criminal defense lawyer Michael Davis handle exactly this kind of multi-count exposure analysis as part of building a defense strategy from the earliest stages of a case.
That default is not the whole story. Even where judicial discretion exists, it works within a frame that’s set by the Federal Sentencing Guidelines, statutory mandatory minimums, and the factors courts are expected to consider under 18 U.S.C. § 3553(a). Discretion in multicount sentencing is real.
How the federal sentencing guidelines structure multi-count cases
When a defendant gets convicted on multiple counts, federal judges do not just pile on the sentences count by count. Instead, they follow a process tied to the U.S.S.G. § 5G1.2, where they work out one combined guideline range across all grouped counts, and then they parcel out that entire punishment.
When the most serious count covers the total
If the statutory maximum on the most serious count is high enough to take in the entire combined guideline range, then the sentences all run concurrently at that length. The total punishment is basically from just one count.
When the most serious count falls short
If the statutory maximum on the lead count does not cover enough to reach the full guideline punishment, the court has to run one or more of the leftover counts consecutively, but only as much as is actually needed so the total hits that same number. The point is to land at the combined punishment the guidelines call for, not to stretch it out for more time via some random stacking scheme.
The factors judges weigh when exercising discretion
Beyond the guidelines calculation, courts take into account the whole range of factors under 18 U.S.C. § 3553(a) when they decide how to set up multiple sentences. A few of these, over and over, end up steering whether the time runs concurrently or consecutively, depending on what’s in the record.
The connection between the offenses really sits at the center of it. When multiple counts stem from one continuous course of conduct, concurrent sentences are more likely. When counts involve different victims, different dates, or clearly distinct conduct, consecutive terms look more justified, since each offense represents a separate harm.
Also, state law sometimes answers this question differently than the federal system, and that becomes significant since most criminal matters are actually brought in state court. Coverage such as consecutive vs concurrent criminal sentencing breaks down how Indiana’s own statutory caps and default rules work, offering a useful point of comparison against the federal framework described here.
Criminal history matters just as much. Defendants with no prior record are more likely to get concurrent sentences. A pattern of similar past offenses makes consecutive sentencing easier to justify, and courts have held that if earlier punishment clearly failed to deter someone, that’s a legitimate reason to add time.
Victim impact plays a role too. When a crime causes lasting harm to specific individuals, especially multiple victims each affected independently, courts tend to lean toward consecutive terms. A concurrent sentence would otherwise discount the harm suffered by every victim after the first.
Mandatory consecutive sentences
In certain cases, federal law takes the decision out of the judge’s hands entirely. The sentences have to stack, no exceptions, no matter what mitigating factors exist or how the judge personally feels about proportionality.
In fiscal year 2024 alone, there were 2,522 federal cases involving § 924(c) convictions, with sentences averaging 150 months. For defendants classified as career offenders, that average jumped to 195 months. That’s more than 16 years, well above the baseline. In cases like these, judges never even got to weigh in on concurrent versus consecutive. The statute already made that call.
How plea agreements Come into play
Defendants often end up thinking only about if they should plead guilty and to which charges, while kind of missing that the shape of a plea agreement really drives the sentencing part. Like the negotiated plea can spell out if the sentences are supposed to run concurrently or consecutively, and prosecutors usually rely on that setup, conditioning the better concurrent terms on a guilty plea that settles everything without trial.
Where the charging document includes a 924(c) count alongside drug trafficking charges, the mandatory consecutive term is often the primary leverage point. Dismissal of the 924(c) count in exchange for a plea on the underlying charges can reduce an exposure of 15 or 20 years to one that reflects only the drug offense. The Department of Justice’s principles of federal prosecution guide charging decisions, but plea negotiations routinely involve the structure of sentences as a primary bargaining point.
What this means in practice
Defense counsel needs to assess whether offenses can be grouped under the guidelines and whether any count triggers a mandatory consecutive term. They also need to assess the facts that support arguing for concurrent sentences based on a single course of conduct before the case is resolved. In any matter involving more than one charge, understanding this framework isn’t optional.



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