A third-degree murder sentence runs up to 15 years in Florida, up to 25 years in Minnesota, and up to 40 years in Pennsylvania. Those are the only three states that use the charge, and each defines it differently, so the length depends heavily on where the killing happened and on rules about parole, gain-time, and supervised release that decide how much of the sentence a person actually serves.
Maximum Sentences in Each State
Third-degree murder is a felony everywhere it exists, but the ceiling and the underlying conduct look different in each state.
Pennsylvania: Up to 40 Years
Pennsylvania classifies third-degree murder as a first-degree felony and allows a sentence of up to 40 years in prison.1Pennsylvania General Assembly. Pennsylvania Code Title 18 Chapter 11 Section 1102 – Sentence for Murder There is no mandatory minimum, which gives judges wide latitude. The judge sets both a minimum and a maximum term, and the defendant becomes eligible for parole after serving the minimum.2Commonwealth of Pennsylvania. Parole 101
Pennsylvania’s definition is the broadest of the three. Any murder that does not qualify as first-degree or second-degree falls into this category, which lets prosecutors bring the charge whenever they can prove malice but not premeditation or specific intent to kill.
Minnesota: Up to 25 Years
Minnesota allows up to 25 years in prison for third-degree murder. If the charge involves distributing a Schedule I or II controlled substance that caused a death, a fine of up to $40,000 can be added.3Minnesota Office of the Revisor of Statutes. Minnesota Code 609 – Murder in the Third Degree
The statute covers two very different scenarios: causing death through an act so reckless it shows utter disregard for human life (“depraved mind” murder), or causing death by illegally distributing certain controlled substances.
Minnesota’s sentencing guidelines are more structured than most. For a defendant with no criminal history convicted of depraved-mind third-degree murder, the presumptive sentence is 150 months, or 12 and a half years, with a guidelines range of 128 to 180 months.4Minnesota Sentencing Guidelines Commission. 2025 Standard Sentencing Guidelines Grid Judges can depart from that range, but they need to state their reasons on the record.
Florida: Up to 15 Years
Florida treats third-degree murder as a second-degree felony, punishable by up to 15 years in prison and a fine of up to $10,000.5Florida Legislature. Florida Code 782.04 – Murder
Florida also has the narrowest definition. The charge applies only when someone unintentionally kills another person while committing or attempting a felony, and only if that underlying felony is not one of the serious crimes that would trigger first-degree felony murder. Robbery, burglary, kidnapping, arson, sexual battery, and carjacking, among others, are excluded because they push the case into a more serious category.
How Much of That Sentence You Actually Serve
The announced sentence and the time behind bars are rarely the same number. Each state handles this differently, and the differences can add or subtract years.
Pennsylvania
The defendant must serve the entire minimum before becoming eligible for parole.2Commonwealth of Pennsylvania. Parole 101 Eligibility is not release. A parole board reviews the inmate’s prison behavior, rehabilitation programming, and release plan before deciding. Pennsylvania does not require inmates to serve 85 percent of their maximum, despite a common misconception.
Florida
Florida eliminated traditional parole for most offenses committed after 1995 and replaced it with gain-time. Inmates can earn basic gain-time of 10 days per month plus incentive gain-time of up to 10 additional days per month for work, education, or good behavior. No combination of credits can reduce time served below 85 percent of the imposed sentence.6Florida Senate. Florida Statutes 944.275 – Gain-Time On a 15-year sentence, that floor works out to roughly 12 years and 9 months.
Minnesota
Every felony sentence in Minnesota is split automatically: two-thirds served in prison, one-third served on supervised release in the community.7Minnesota Office of the Revisor of Statutes. Minnesota Statutes Section 244.101 This is built into the sentence, not earned. A 150-month sentence means roughly 100 months, about 8 years and 4 months, incarcerated before transitioning to supervision. Violating the terms of supervised release can send someone back to prison to finish the original sentence.
What Determines Where in the Range a Judge Lands
The statutory maximum is a ceiling, not a default. Judges weigh case-specific circumstances to fit the sentence to the crime and the defendant.
Aggravating factors push toward the top of the range. The most influential are a prior criminal record (especially for violence), the vulnerability of the victim, use of a weapon, especially cruel conduct, and committing the crime while on probation or bail for another offense. Lack of remorse or attempts to conceal evidence also weigh against the defendant. In Minnesota’s structured system, these factors can justify an upward departure from the presumptive guidelines number.
Mitigating factors work the other way. A clean criminal record is the single most powerful one, because sentencing guidelines weight criminal history heavily. Judges also consider genuine remorse, cooperation with law enforcement, a minor role compared to co-defendants, mental illness, and whether the defendant acted under extreme emotional distress. None of these erase the sentence, but they can meaningfully reduce it within the permitted range.
When There Are Other Charges: Concurrent vs. Consecutive
Third-degree murder charges often come alongside other counts, and the total prison time depends on whether sentences run at the same time (concurrent) or back to back (consecutive). Under federal law, multiple sentences imposed at the same time run concurrently unless the court orders otherwise.8Office of the Law Revision Counsel. 18 U.S. Code 3584 – Multiple Sentences of Imprisonment State rules vary but generally follow the same principle, and a judge who stacks sentences consecutively typically has to explain the decision on the record.
The practical effect is significant. A Minnesota defendant convicted of third-degree murder and assault might face 150 months on the murder count and 48 months on the assault. Concurrent sentences mean roughly 150 months total. Consecutive sentences mean roughly 198 months. That single decision can add years to time served.
How Sentences Get Shorter: Defenses and Plea Deals
A charge is not a conviction, and the sentence a defendant actually faces often turns on what the case gets negotiated down to.
The most direct defense challenges the mental state element. In Minnesota, prosecutors must prove a “depraved mind” showing utter disregard for human life. A defense attorney may argue that the conduct, while reckless, did not reach that extreme, which can push the case down to manslaughter. The line between recklessness and depravity is genuinely fuzzy, and reasonable people can disagree about where a given set of facts falls.
Self-defense is a separate route. If the defendant reasonably believed they faced imminent death or serious bodily harm and used proportional force, the killing may be justifiable, resulting in acquittal rather than a reduced sentence.
In Florida, the third-degree charge requires proof that the killing occurred during a qualifying felony. If the defense can show the defendant was not committing that felony, or that the death was not causally connected to it, the murder count collapses with the underlying charge.
Plea bargaining also drives the real sentence in many cases. Research on homicide cases suggests roughly two-thirds of defendants who plead guilty to homicide charges plead to a reduced charge rather than the original one. Third-degree murder is frequently negotiated down to voluntary manslaughter, which carries substantially lower sentences in all three states.