How Long Do the Police Have to Charge You With a Crime?

How long the police have to charge you with a crime depends on which clock you’re asking about. If you’ve already been arrested without a warrant, a judge generally must find probable cause within 48 hours or you’re entitled to release. If no arrest has happened yet and you’re wondering how long prosecutors can wait before filing charges for past conduct, the answer is set by a statute of limitations that runs anywhere from one year to forever, depending on the offense and the jurisdiction.

The 48-Hour Rule After a Warrantless Arrest

Police cannot hold you indefinitely while they decide what to charge. The U.S. Supreme Court ruled in County of Riverside v. McLaughlin that a judge must make a probable cause determination within 48 hours of a warrantless arrest.1Legal Information Institute. County of Riverside v. McLaughlin, 500 U.S. 44 (1991) Once that window passes, the government has to prove that an emergency or extraordinary circumstance justified the delay. Weekends and administrative backlogs do not count.

This 48-hour clock is a completely separate question from how long prosecutors have to file charges in the first place. It governs custody after a warrantless arrest. The statute of limitations governs the deadline for bringing charges at all.

What a Statute of Limitations Does

A statute of limitations is a deadline for filing formal criminal charges after a crime occurs. Once it expires, prosecution is barred no matter how strong the evidence is. If charges are filed too late, a defendant can have them dismissed before trial.

The length of that deadline depends on two things: whether the case is federal or state, and how serious the crime is.

Federal Deadlines

The default federal statute of limitations for most crimes is five years from the date of the offense.2Office of the Law Revision Counsel. 18 U.S. Code 3282 – Offenses Not Capital That covers the bulk of federal felonies, including drug offenses, fraud, and weapons charges. Congress has written different windows for specific categories:

State Deadlines by Severity

Every state writes its own limitations statute. The rules differ enough that checking your specific state is worth doing, but the pattern is consistent: the more serious the crime, the longer prosecutors have.

Misdemeanors

For minor offenses like petty theft, simple assault, or disorderly conduct, most states set a deadline between one and two years. A smaller number allow up to three years. The shorter window reflects how quickly evidence for minor crimes goes stale.

Felonies

Standard felonies like burglary, robbery, or drug trafficking typically fall in a three-to-six-year range, depending on the state and the specific offense. Some states set a single deadline for all non-exempt felonies. Others tier the deadlines by felony class, with more serious violent felonies or complex financial crimes carrying windows of ten years or more.

Crimes With No Deadline

Murder is the most familiar example. Every state and the federal system allow murder to be prosecuted at any time, which is why cold cases from decades ago still result in arrests when new evidence surfaces.6Office of the Law Revision Counsel. 18 U.S. Code 3281 – Capital Offenses

Beyond murder, many states have eliminated deadlines for other serious offenses, particularly sex crimes against children. Federal terrorism offenses that cause or risk death also carry no deadline.4Office of the Law Revision Counsel. 18 U.S. Code 3286 – Extension of Statute of Limitation for Certain Terrorism Offenses The common thread is that crimes causing irreversible harm tend to carry the longest windows, or none.

When the Clock Starts

For most crimes, the statute of limitations begins running on the date the offense was committed. A robbery on June 1 starts the clock on June 1.

The main exception is the discovery rule, which applies to crimes that aren’t immediately apparent to the victim. Fraud and embezzlement are the standard examples. If an employee has been skimming from company accounts for years, the victim may not know until an audit turns up the discrepancy. In those situations, the clock doesn’t start until the crime is discovered, or until a reasonable person would have discovered it. That second half matters. If obvious red flags existed and the victim ignored them, a court may start the clock from the point where a reasonable investigation would have caught the fraud.

What Pauses the Clock

Even after the statute of limitations starts running, certain events can pause it. This is called tolling, and it prevents people from running out the deadline through their own conduct.

Fleeing the Jurisdiction

Federal law stops the clock while a person is a fugitive from justice.7Office of the Law Revision Counsel. 18 U.S. Code 3290 – Fugitives From Justice If you flee the state or hide to avoid prosecution, time stops counting. It picks back up only when you return or are found. Most states have equivalent provisions.

Child Victims

When the victim is a child, many jurisdictions pause or extend the deadline. Federally, prosecution for offenses involving sexual or physical abuse of a child can be brought during the child’s lifetime or for ten years after the offense, whichever gives more time.5Office of the Law Revision Counsel. 18 U.S. Code 3283 – Offenses Against Children Many states similarly toll the deadline until the victim reaches the age of majority.

DNA Evidence

Forensic DNA has changed how old cases are handled. Under federal law, when DNA testing implicates an identified person in a felony, the prosecution gets an additional period equal to the original deadline, counted from the date the DNA identified the suspect.8Office of the Law Revision Counsel. 18 U.S. Code 3297 – Cases Involving DNA Evidence Some states go further, allowing prosecutors to file “John Doe” warrants based on a DNA profile before the suspect’s identity is known, which preserves jurisdiction before the deadline expires.9National Institute of Justice. John Doe Warrant

You Have to Raise the Defense Yourself

The expiration of a statute of limitations does not automatically end a case. It is an affirmative defense, meaning the defendant has to raise it in the trial court. The Supreme Court confirmed in Musacchio v. United States that the federal five-year deadline is a nonjurisdictional defense that becomes part of the case only if the defendant brings it up.10Congress.gov. Statute of Limitation in Federal Criminal Cases: An Overview A defendant who pleads guilty or goes to trial without raising the issue has likely waived it. It cannot be raised for the first time on appeal.

If you’re facing charges for an old offense, identifying the limitations issue early and raising it before trial is what triggers dismissal. Silence lets the case proceed as if no deadline existed.

When Charges Come Late but Still Inside the Deadline

Even when prosecutors file within the statute of limitations, an unusually long delay between the crime and the indictment can violate due process. The Sixth Amendment’s speedy trial protection only applies after arrest or formal accusation, but the Fifth Amendment’s due process clause can serve as a backstop against excessive pre-charge delay.

Winning that argument is hard. A defendant typically has to show actual prejudice from the delay, not just the passage of time. General claims that memories faded are not enough. The defendant needs to point to specific evidence that was lost or witnesses who became unavailable because of the delay. Most courts also require some showing that the delay was intentional or seriously negligent, rather than the natural byproduct of a complex investigation. Courts generally accept that thorough pre-indictment investigation is legitimate and will not penalize prosecutors for taking time to build a solid case.