After you waive a preliminary hearing, your case is bound over to the trial court on the charges in the original complaint, and the prosecution moves to formally charge you — either by presenting the case to a grand jury or by filing a charging document called an information. No judge reviews the strength of the evidence at this stage. In the federal system, prosecutors have 30 days from your arrest to secure that indictment or information, and the clock keeps running whether you held the hearing or waived it.1Office of the Law Revision Counsel. 18 USC 3161 – Time Limits and Exclusions
Your Case Is Bound Over to the Trial Court
A preliminary hearing is the step where a magistrate decides whether probable cause supports the charges against you.2United States Department of Justice. Preliminary Hearing It normally takes place within 14 days of your initial court appearance if you’re in custody, or 21 days if you’ve been released.3Legal Information Institute. Federal Rules of Criminal Procedure Rule 5.1 – Preliminary Hearing When you waive, the magistrate skips the hearing entirely and transfers the case to the trial court that will handle it from formal charging through trial. The charges in the original complaint proceed exactly as filed.
What You Gave Up and What You Avoided
Waiving removes the earliest opportunity to test the prosecution’s evidence. A judge could have dismissed or reduced charges at the hearing if the proof fell short, and your attorney could have cross-examined prosecution witnesses to see what the case actually looks like. Once you waive, that chance is gone, and courts almost never allow a defendant to take it back.
The trade-offs run the other way too. A hearing creates a transcript of prosecution testimony that can be used at trial even if a witness later becomes unavailable, and testimony sometimes exposes additional conduct that prosecutors tack on as new charges or enhancements. Waiving keeps the case limited to the offenses already filed and sometimes buys goodwill in plea discussions. Those are the reasons defense attorneys recommend it, and they shape what comes next.
Formal Charging: Grand Jury or Information
Once the case is bound over, the prosecution has to formally charge you. The Fifth Amendment requires a grand jury indictment for any serious federal crime.4Library of Congress. US Constitution – Fifth Amendment A federal grand jury of up to 23 citizens reviews the prosecution’s evidence in secret; you and your attorney are not present. If 12 or more jurors find probable cause, they return a “true bill” and the indictment issues. If not, they return a “no bill” and the charges don’t proceed.5United States Courts. Handbook for Federal Grand Jurors Because grand juries hear only the prosecution’s side, indictments are returned in the overwhelming majority of cases.6Legal Information Institute. Federal Rules of Criminal Procedure Rule 6 – The Grand Jury
Federal defendants can waive indictment and agree to be charged by information, a document the prosecutor files directly with the court. That requires your consent in open court after you’re advised of the charges and rights involved, and it’s a common path for defendants who already intend to plead guilty.7Legal Information Institute. Federal Rules of Criminal Procedure Rule 7 – The Indictment and the Information Many state systems let prosecutors file an information without a grand jury at all, so the grand jury step may be optional or absent depending on where your case sits.
Arraignment in the Trial Court
With an indictment or information in hand, you’re brought before the trial court for arraignment. The judge reads the formal charges, and you enter a plea of guilty, not guilty, or no contest. Most defendants plead not guilty at this stage to preserve their options, even those planning to negotiate a plea later. A no-contest plea produces the same sentencing outcome as a guilty plea but cannot be used against you as an admission in a separate civil lawsuit, and federal courts have to approve it rather than accept it automatically.8United States Department of Justice. Initial Hearing / Arraignment
The judge revisits bail at arraignment. If you’ve been in custody, this is another chance to argue for release. If you were already out, the court can modify the conditions. Judges weigh the seriousness of the charges, your prior record, community ties, employment, and whether you present a flight risk or danger.8United States Department of Justice. Initial Hearing / Arraignment
Deadlines That Keep Running
Waiving the hearing doesn’t pause any criminal deadlines. Under the federal Speedy Trial Act, prosecutors must file an indictment or information within 30 days of your arrest, with a 30-day extension available if no grand jury was in session during that window. Once the indictment is filed and you’ve appeared in court, trial must begin within 70 days, measured from whichever is later. Trial also cannot start fewer than 30 days after you first appear with an attorney, which guarantees your defense a minimum preparation window.1Office of the Law Revision Counsel. 18 USC 3161 – Time Limits and Exclusions
These deadlines can be extended for specific reasons: complex cases, competency evaluations, interlocutory appeals, among others. State courts set their own speedy-trial timelines. One practical effect of waiving is that the gap between arrest and formal charges often shrinks, because the hearing that would have taken 14 to 21 days gets skipped entirely.3Legal Information Institute. Federal Rules of Criminal Procedure Rule 5.1 – Preliminary Hearing
Discovery
After arraignment, the case enters discovery. This is where your attorney finally gets a comprehensive look at the government’s case, and it matters more when you’ve waived the preliminary hearing, because discovery becomes your first real window into the evidence.
In federal court, the prosecution’s duty to produce most evidence kicks in on request. That includes your statements to law enforcement, your prior criminal record, documents and physical items the government plans to use at trial, and forensic reports. Expert witness disclosures come on a schedule the court sets far enough before trial to let the defense prepare.9Legal Information Institute. Federal Rules of Criminal Procedure Rule 16 – Discovery and Inspection
Separate from those procedural rules, prosecutors have a constitutional duty to turn over any evidence favorable to the defense on guilt or sentencing. That duty, from Brady v. Maryland, applies whether or not the defense asks for it, and it continues as new material surfaces.10Justia US Supreme Court. Brady v Maryland, 373 US 83 (1963)11United States Department of Justice. Discovery Weaknesses that discovery exposes become leverage in plea negotiations and the foundation for pre-trial motions.
Pre-Trial Motions
Once your attorney has reviewed discovery, pre-trial motions become the next real battleground. The most consequential is a motion to suppress. If evidence was obtained through an illegal search, a coerced confession, or another constitutional violation, your attorney can ask the court to exclude it. Federal rules require suppression motions to be raised before trial when the basis is reasonably available.12Legal Information Institute. Federal Rules of Criminal Procedure Rule 12 – Pleadings and Pretrial Motions A successful suppression motion can gut the government’s case, and occasionally leads to dismissed charges when the excluded evidence was central.
Other motions can attack the indictment as defective, challenge the joinder of charges, or raise speedy-trial violations. Motions in limine ask the judge to rule in advance that specific evidence or testimony is inadmissible, keeping prejudicial material away from the jury before it ever gets in front of them. Suppression challenges how evidence was gathered; motions in limine focus on whether lawfully obtained evidence is unfairly prejudicial or misleading at trial.
Plea Negotiation or Trial
Plea discussions run alongside everything from arraignment through pre-trial motions, and most federal criminal cases end in plea agreements rather than trials. In a plea deal you agree to plead guilty, often to a reduced charge or with the prosecution recommending a lighter sentence, and the case moves directly to sentencing with no trial.13United States Department of Justice. Plea Bargaining
If you plead guilty, the federal sentencing guidelines can reduce your offense level by two for acceptance of responsibility, and by an additional level if your offense level is 16 or higher and you notify the prosecution early enough to avoid trial preparation.14United States Sentencing Commission. Overview of the Federal Sentencing Guidelines That mechanic is part of why defense attorneys sometimes recommend waiving the preliminary hearing as a step in a broader plea-oriented strategy: the earlier the cooperation is visible, the more of that reduction stays available.
If no plea is reached, the case proceeds to trial, and the work done in discovery and pre-trial motions becomes the backbone of the defense that gets presented to the jury.