Massachusetts Criminal Process: From Clerk-Magistrate Hearing to Trial and Appeal

A Massachusetts criminal case can begin with a complaint application, an arrest, or a grand jury indictment. Later proceedings may address arraignment, bail, discovery, pretrial motions, a negotiated disposition or trial, sentencing, probation, and appeal. Criminal-record consequences may continue after the case ends. This page explains the usual order and links to more detailed treatment of each subject.

This page addresses procedure. The Massachusetts criminal defense practice areas page covers particular charges and the separate consequences for students, licensed professionals, and noncitizens.

Attorney Joe Serpa has practiced Massachusetts criminal defense since 1995. He represents defendants in the Boston Municipal Court, the District Courts of Eastern Massachusetts, and the Superior Court at the stages described below.

The Sequence and Its Variations

Few cases pass through every stage. A clerk-magistrate may decline to issue a complaint, the Commonwealth may enter a nolle prosequi, or a judge may allow a motion to dismiss. Many cases end through a negotiated disposition before trial.

The starting procedure depends on the court and charging method. A District Court or Boston Municipal Court case ordinarily begins with a complaint. A Superior Court case begins with a grand jury indictment, so the grand jury comes before arraignment. A case ordinarily proceeds without a clerk-magistrate hearing when police make an arrest.

A case in which the alleged conduct occurred before age eighteen ordinarily proceeds in the Juvenile Court. The firm’s page on juvenile delinquency and youthful offender defense explains the age and jurisdiction rules, diversion, sentencing, and confidentiality in the Juvenile Court.

A youthful offender indictment requires an offense, committed when the child was at least fourteen and younger than eighteen, that would be punishable by imprisonment in state prison if an adult committed it.

The child must also have a prior commitment to the Department of Youth Services, or the offense must involve the infliction or threat of serious bodily harm or be a firearms offense specified in G.L. c. 119, § 52. The Juvenile Court also keeps jurisdiction over a pending case after the child turns eighteen.

Separation of Powers in a Massachusetts Criminal Case

Article 30 of the Massachusetts Declaration of Rights requires the separation of legislative, executive, and judicial power. In a criminal case, the Massachusetts Legislature defines statutory offenses, assigns jurisdiction, and establishes authorized penalties and statutory dispositions. A Massachusetts district attorney exercises executive authority over charging and prosecution, including whether to seek an indictment, enter a nolle prosequi, or agree to reduce a charge as part of a plea. A Massachusetts judge exercises judicial authority over motions, bail and conditions of release, pleas, trial rulings, and sentencing.

The Legislature cannot decide a pending case. A district attorney cannot determine guilt or impose a sentence. A judge cannot direct the Commonwealth to bring or reduce a charge, or dismiss a legally adequate prosecution solely because the judge believes it should end. Clerk-magistrates, grand juries, and trial juries make additional decisions at the stages described below.

Investigation and the Complaint Application

A lawyer can represent a person before any complaint or indictment issues. The firm’s page on what to do when under criminal investigation before charges are filed explains how a lawyer responds to police contact, a request for an interview, a search warrant, or a grand jury subpoena. The page also explains how the lawyer preserves evidence before any charge.

In the District Court and the Boston Municipal Court, a criminal proceeding begins when the court issues a complaint. A police officer or any other person with knowledge, whether firsthand or not, of the facts constituting the alleged offense may apply for the complaint under Mass. R. Crim. P. 3(g).

Some cases begin with a complaint application before any arrest. In other cases, police arrest first and apply for the complaint afterward. The application identifies the requested charges and the facts offered in support. An arrest affects whether the accused has a right to a clerk-magistrate hearing. The page on how criminal cases begin in Massachusetts District and Boston Municipal Courts explains the three starting procedures and the rules for each.

In a case that begins with a vehicle stop, counsel first examines whether the stop was lawful. Massachusetts Traffic Stops, Exit Orders, and Pretext Searches explains what an officer may do at each stage of the encounter. Counsel also examines any statement made during the investigation under the rules explained in Your Right to Remain Silent in Massachusetts.

The Clerk-Magistrate Hearing

Under G.L. c. 218, § 35A, an accused person who is not under arrest ordinarily has an opportunity to oppose the issuance of a misdemeanor complaint before any process issues. For a felony application submitted by a law enforcement officer, § 35A requires a hearing if the officer requests one. The court has discretion whether to provide a hearing on a felony application submitted by someone other than a law enforcement officer. Section 35A does not require a hearing where there is an imminent threat of bodily injury, the commission of another crime, or flight from Massachusetts.

The clerk-magistrate decides whether probable cause exists. The clerk-magistrate may decline to authorize a complaint even when the application establishes probable cause, unless the Attorney General or district attorney has communicated a decision to prosecute. The clerk-magistrate must authorize a legally valid complaint supported by probable cause when the Attorney General or district attorney has communicated a decision to prosecute. The clerk-magistrate may defer a decision when further investigation is necessary or, with the consent of both the complainant and the accused, to permit an informal resolution.

A clerk-magistrate hearing is presumptively private. The clerk-magistrate may open the hearing to the public only when the application has special public significance and the legitimate public interest outweighs the accused person’s right of privacy.

No complaint, arraignment, or CORI entry results from an application that the clerk-magistrate denies. A complainant has no appeal as of right, but may ask a judge to redetermine the application. The judge may deny redetermination, review the factual allegations previously submitted, or consider the application anew with additional evidence or argument. A denial ordinarily ends the application in practice, but it is not a final judgment. Any later application remains subject to the applicable limitation period. G.L. c. 277, § 63 provides a six-year period for most offenses and longer periods for specified offenses.

Under G.L. c. 90C, § 3, a person accused of a misdemeanor motor vehicle offense with no accompanying felony may request a clerk-magistrate hearing before a complaint issues. The request must be made in writing within four days of the alleged violation. Clerk-Magistrate Hearings in Massachusetts covers who receives a hearing, what the magistrate may consider, and the possible rulings. Massachusetts Motor Vehicle Crimes and the Uniform Citation covers the citation itself.

Grand Jury Indictment and the Superior Court

A criminal prosecution in the Superior Court proceeds by grand jury indictment. The defendant is excluded from the grand jury proceeding. The standard for an indictment is probable cause. A defendant charged with an offense punishable by state prison has the right to be proceeded against by indictment, except for an offense within concurrent jurisdiction that the District Court retains. G.L. c. 263, § 4. The right to indictment may be waived under § 4A.

The District Court and the Boston Municipal Court have original jurisdiction concurrent with the Superior Court over all misdemeanors except libel, felonies punishable by no more than five years in state prison, and specified additional offenses. G.L. c. 218, § 26. The District Court and the Boston Municipal Court may impose the penalties the Superior Court could impose for an offense within their jurisdiction, except a state prison sentence. G.L. c. 218, § 27.

Some prosecutions that may ultimately proceed in the Superior Court begin by complaint in the District Court. A defendant charged in the District Court has a right to a probable cause hearing if the charge is an offense for which the defendant has a right to indictment. The same right applies to a charge of an offense within concurrent jurisdiction that the District Court will not retain.

The defendant has no right to the hearing if the grand jury has returned an indictment for the same offense. The defendant may waive the hearing. At the hearing, a judge who finds probable cause must bind the defendant over to the Superior Court. A judge who does not find probable cause must dismiss the complaint. Mass. R. Crim. P. 3(f). An indictment returned before the scheduled hearing ordinarily makes the probable cause hearing unnecessary.

Prosecution in a District Court does not convert a felony into a misdemeanor. Commonwealth v. Lightfoot, 391 Mass. 718 (1984). The felony or misdemeanor classification affects the charging method, the sealing waiting period, and the possible sentence. A separate page explains which Massachusetts court hears the case and whether a committed sentence is served in the house of correction or in state prison.

Arrest, Summons, and Warrants

After an arrest, police book the defendant. An arrested defendant who is not released must be brought before the court for arraignment if the court is in session, or at the court’s next session if the court is not in session.

A defendant who receives a summons, or who is arrested and then released, must appear for arraignment on a date certain. An accused person whom police do not arrest may instead receive notice of a clerk-magistrate hearing before any complaint issues. The prosecutor may request a warrant or may resummon a defendant who fails to appear in response to a summons after a complaint has issued. Mass. R. Crim. P. 6 and 7.

A warrant remains active until it is removed. Warrants entered in the warrant management system are available to law enforcement agencies and the Registry of Motor Vehicles through the criminal justice information system. G.L. c. 276, § 23A. A licensing authority that learns of an outstanding default or arrest warrant must notify the licensee.

The notice states that the license will be suspended unless the licensee shows within 30 days that the warrant has been recalled or that none is outstanding. G.L. c. 276, § 23B. The licensee may request a hearing. The licensing authority must issue a finding within 45 days after the request.

A planned voluntary surrender allows counsel to address the warrant and present bail information when the defendant appears. The page on warrants and arrests in Massachusetts courts explains the arrest process. The page on removing a Massachusetts warrant explains how counsel can ask the court to recall a warrant and address bail after a default.

Arraignment

At arraignment, the court reads the charges in open court unless a represented defendant waives the reading. The court enters the defendant’s plea, gives the warnings and advisories required by law, addresses the right to counsel, and determines the conditions of release.

The Committee for Public Counsel Services must provide representation to a defendant whom the judge finds indigent or indigent but able to contribute, unless the defendant has knowingly waived counsel. A not-guilty plea is common, but Mass. R. Crim. P. 7 directs the court to enter the plea the defendant makes. A CORI entry is created when the defendant is arraigned. A later dismissal or acquittal becomes part of the disposition history. Later access to the record depends on the applicable sealing or expungement law.

What a person outside the case may see depends on that requester’s authorized level of access under G.L. c. 6, § 172. Criminal justice agencies may obtain all criminal offender record information, including sealed records, when performing criminal justice duties. Employers, landlords, volunteer organizations, and licensing bodies receive a narrower set that includes pending charges and a continuance without a finding until dismissal. The general public receives less information.

Arraignment in Massachusetts explains the proceeding and the options that are no longer available after arraignment.

Bail, Conditions of Release, and Dangerousness

Bail in the District Court and the Boston Municipal Court is set under G.L. c. 276, § 58, and in the Superior Court under § 57. A judge must consider the defendant’s financial resources. A judge must make written or orally recorded findings of fact and state the reasons for the decision if the bail amount the judge sets is likely to cause long-term pretrial detention because the defendant cannot afford it. Brangan v. Commonwealth, 477 Mass. 691 (2017).

A judge may not set unaffordable bail to detain a defendant thought to be dangerous. The presumption of release, statutory factors, six-hour rule, and Superior Court review are explained on the Massachusetts bail page. The Commonwealth must move under G.L. c. 276, § 58A to seek detention based on dangerousness. The Massachusetts dangerousness-hearing page covers qualifying offenses, evidence, and possible conditions.

On the Commonwealth’s motion under G.L. c. 276, § 58A, the judge must hold the dangerousness hearing immediately at the defendant’s first appearance unless the defendant or the Commonwealth requests a continuance. Except for good cause, a continuance on the defendant’s motion may not exceed seven days, and a continuance on the Commonwealth’s motion may not exceed three business days. Detention during the continuance requires a showing that probable cause existed to arrest the defendant. To order detention after the hearing, the judge must find by clear and convincing evidence that no conditions of release will reasonably assure the safety of another person or the community. Absent good cause, detention under § 58A may not exceed 120 days in the District Court or 180 days in the Superior Court, excluding delay defined in Mass. R. Crim. P. 36(b)(2).

Discovery

Discovery in a Massachusetts criminal case is largely automatic. At arraignment, Mass. R. Crim. P. 14 requires the prosecutor to provide the mandatory discovery then in the prosecutor’s possession and available for disclosure. The prosecutor must then make diligent efforts to obtain the remaining mandatory discovery from the prosecution team and disclose material as it becomes available, ordinarily no later than the first pretrial conference date unless the court orders otherwise.

Mandatory discovery includes the defendant’s and any codefendant’s written or recorded statements and the substance of relevant oral statements. Mandatory discovery also includes grand jury minutes, witness statements, the identities and statements of prospective witnesses, police and investigator reports, photographs, recordings, tangible objects, intended exhibits, physical examinations, scientific tests, expert information, and summaries of identification procedures. Separate rules govern the authentication and admissibility of text messages, phone contents, social-media material, and other digital evidence.

Rule 14 also requires disclosure of material that tends to cast doubt on guilt, the credibility of the evidence, or the credibility of a witness. Rule 14 requires disclosure of any promise, reward, or inducement sought by, offered to, or given to a witness.

Rule 14.1 governs reciprocal discovery from the defense, and Rule 14.2 governs discovery procedure and enforcement. Rule 14.3 addresses notice and discovery concerning specified defenses, self-defense, and first-aggressor evidence. Rule 14.4 governs pretrial discovery of mental-health issues. A party may seek records held by a third party through a summons under Mass. R. Crim. P. 17, subject to the rule’s requirements and any applicable privilege or protective procedure. Counsel should promptly seek preservation of surveillance video or other evidence subject to a short retention period, identify missing automatic discovery, and ask the court to enforce disclosure obligations when necessary.

Pretrial Motions

A motion to dismiss challenges the complaint or indictment before trial. In the District Court and the Boston Municipal Court, a common ground is that the facts stated in the complaint application did not establish probable cause. In the Superior Court, a judge may dismiss an indictment when the grand jury heard insufficient evidence or the integrity of the proceeding was impaired. Dismissal motions may also address lost or destroyed evidence and defective charging documents.

Motor vehicle cases have an additional statutory defense. Failure to give the accused a copy of the citation at the time and place of the alleged violation is a defense. The defense does not apply if the person could not have been stopped, additional time was reasonably necessary to determine the nature of the violation or the person’s identity, or the court finds another circumstance that justifies the delay.

G.L. c. 90C, § 2. The page on how Massachusetts criminal cases get dismissed explains the grounds for dismissal and the difference among dismissal with prejudice, dismissal without prejudice, and a nolle prosequi.

A motion to suppress asks the court to exclude evidence obtained in violation of the Fourth Amendment, Article 14, the Fifth Amendment, or Article 12. Massachusetts law provides greater protection than federal law at some stages of a police encounter. An exit order and a patfrisk each require separate justification. The Commonwealth may be unable to continue the case if the judge suppresses evidence that is central to the prosecution. The page on illegal searches and seizures in Massachusetts explains the governing rules.

Mass. R. Crim. P. 36 generally requires trial within 12 months after the return day in the court where the case is awaiting trial, subject to the excluded periods defined in Rule 36(b)(2). The Commonwealth bears the burden of establishing the time that Rule 36 excludes once the defendant shows that 12 months have elapsed. The defendant is entitled on motion to dismissal with prejudice if the time allowed under Rule 36 has expired.

The dismissal applies to the same offense and all related offenses. Rule 36(c) separately requires dismissal when the prosecutor has been unreasonably lacking in diligence and the delay has prejudiced the defendant, even if the 12-month computation has not expired.

Pleas, Diversion, and Other Dispositions

Most Massachusetts criminal cases end without a trial verdict. Possible outcomes include dismissal, a nolle prosequi, pretrial probation under G.L. c. 276, § 87 without a guilty plea or admission, statutory diversion, a continuance without a finding after a plea or admission, and a guilty plea followed by sentencing. Each outcome has different legal and record consequences.

Under Mass. R. Crim. P. 12, the parties may make an agreed recommendation as to disposition or may make separate requests. A judge who intends to impose a disposition more severe than an agreed recommendation must allow the defendant to withdraw the plea or admission.

A District Court or BMC judge who receives separate requests from the parties must allow withdrawal before exceeding the defendant’s request. In the Superior Court, the judge must allow withdrawal before imposing a disposition more severe than the prosecutor’s recommendation. An agreement that includes both a specific disposition and a prosecutor’s charge concession becomes binding only if the judge accepts that agreement. The limits in Rule 12 do not require the judge to accept a proposed plea, admission, agreement, or recommendation.

The court addresses statutory diversion at arraignment. The court continues the case for 14 days for assessment, or 30 days for a veteran or person on active service. The court may then stay the proceedings for 90 days upon the defendant’s written consent and knowing waiver of the right to a speedy trial. G.L. c. 276A, §§ 2, 3, and 5. Statements made during assessment or while fulfilling the terms of the stay are not admissible and may not be disclosed to the prosecutor. The statute sets no age limit.

With the consent required by G.L. c. 276B, § 2, an eligible juvenile or adult may enter a community-based restorative justice program before arraignment. A participant who successfully completes the program receives a dismissal before arraignment. The participant therefore has no CORI entry from the charge.

Before accepting a guilty plea, a plea of nolo contendere, or an admission to sufficient facts, the court must give the immigration advisement prescribed by G.L. c. 278, § 29D at every plea colloquy. The defendant is presumed not to have received the advisement if the record does not show that the advisement was given.

A disposition can affect sealing eligibility, immigration status, professional licensing, firearms rights, and other interests. A disposition that is favorable for one defendant may have disqualifying consequences for another defendant. Pretrial Probation, CWOFs, and Diversion in Massachusetts compares the principal nontrial dispositions.

Trial

At trial, the Commonwealth must prove every element of every charge beyond a reasonable doubt. A jury verdict must be unanimous. A District Court or Boston Municipal Court jury has six members. A Superior Court criminal jury has twelve members. The Boston Municipal Court criminal-case stages page explains how criminal cases proceed in the court’s eight divisions.

A defendant may waive a jury trial and elect a bench trial only after the judge conducts a colloquy and finds that the waiver is knowing and voluntary. The defendant must sign and file a written waiver. The waiver also requires the court’s approval. Mass. R. Crim. P. 19.

The judge may refuse approval for good and sufficient reason stated on the record. In the District Court and BMC, G.L. c. 218, § 26A also requires that the defendant have an opportunity to consult counsel. The statute prohibits the court from receiving the waiver until the pretrial conference has occurred and the court has heard the results of the conference.

The court also may not receive the waiver until all discovery motions have been decided, all pretrial discovery procedures have been completed, and the resulting orders have been complied with. The stages of trial and the governing evidence rules are covered in the Massachusetts criminal court practice section.

The judge must use a separate procedure if a juror’s ability to continue becomes disputed after deliberations begin. The firm’s analysis of the Lindsay Clancy juror dispute addresses the required inquiry and the limited authority to substitute an alternate.

The defendant has the right to confront and cross-examine the Commonwealth’s witnesses, to present evidence or none, and not to testify. No inference may be drawn from a decision not to testify. Jury selection is the first contested stage of the trial itself. At the close of the Commonwealth’s case, the defense may move for a required finding of not guilty. Preservation of an objection at trial affects the standard of appellate review. Representative outcomes appear in Massachusetts Criminal Defense Results.

Sentencing

A committed sentence imposed in the District Court or the Boston Municipal Court is served in a house of correction. Only the Superior Court may impose a state prison sentence. Within the limits of the law, a judge may impose a committed sentence, a suspended sentence with probation, straight probation, or a fine, and may continue a case without a finding after an admission to sufficient facts.

The sentencing hearing may also address restitution, statutory assessments, credit for time served, and whether multiple sentences run concurrently or consecutively. Sentencing in the Massachusetts District Court and BMC explains the available dispositions and the sentence a judge may impose after revoking probation.

Probation and the Surrender Hearing

A disposition that includes probation, including a continuance without a finding, keeps the case open until the probation term ends. At a surrender hearing, a judge decides under a preponderance-of-the-evidence standard whether the defendant violated probation. Commonwealth v. Holmgren, 421 Mass. 224 (1995). Substantially reliable hearsay may be admitted. A judge who revokes a continuance without a finding may enter a guilty finding and impose a sentence on the original charge. Massachusetts Probation Violation Defense explains how the proceeding begins, what evidence is permitted, and what the judge may do.

Appeal and Postconviction Review

A conviction after trial may be appealed. Mass. R. Crim. P. 29 permits the trial judge to revise or revoke a sentence upon a timely motion or on the judge’s own initiative. Under Rule 29(a)(2), each 60-day filing period runs from the disposition, from the appellate court’s issuance of the rescript on direct review, or from the disposition of criminal charges against a codefendant. The court has no power to revise or revoke a sentence on a motion filed after the applicable 60-day period.

Under Mass. R. Crim. P. 30(b), a defendant may file a motion for a new trial at any time if it appears that justice may not have been done. The firm’s analysis of withdrawing a guilty plea after later-discovered police misconduct addresses one application of Rule 30(b). Rule 30(a) is available to a person imprisoned or otherwise restrained on a criminal conviction when the confinement or restraint violates the Constitution or laws of the United States or Massachusetts.

G.L. c. 278A provides access to forensic and scientific analysis after conviction. In Commonwealth v. Watson, SJC-13850 (July 9, 2026), the Supreme Judicial Court held that the statute permits postconviction digital forensic analysis of a cell phone. Correcting a Massachusetts Criminal Sentence covers Rule 29 and Rule 30 practice. The firm’s discussion of Commonwealth v. Watson and postconviction digital forensic analysis examines the decision in detail.

The Criminal Record and Its Consequences

A criminal record may remain after the case ends. Under G.L. c. 276, § 100A, eligibility to seal by waiting period ordinarily arises three years after a misdemeanor disposition and seven years after a felony disposition, measured from the disposition or release from incarceration, whichever is later. An intervening conviction restarts the waiting period. Section 100A also imposes additional conditions.

A case that ends without a conviction may be eligible for sealing without a waiting period. After a finding of not guilty, a no bill, or a finding of no probable cause, the commissioner seals the record unless the defendant objects in writing. G.L. c. 276, § 100C. After a nolle prosequi or a dismissal by the court, the court directs sealing when substantial justice would best be served. Commonwealth v. Pon, 469 Mass. 296 (2014).

Separate rules govern immigration, professional-licensing, firearms, and academic consequences. The rule for each kind of consequence may be based on the charge, the alleged conduct, an admission, or the final disposition. The firm’s page on who can see a Massachusetts criminal record explains the levels of access. The page on sealing and expunging a Massachusetts criminal record explains the available procedures. The firm’s page on immigration consequences of Massachusetts criminal charges explains the federal treatment of a continuance without a finding and an admission to sufficient facts.

Chapter 163 and Noncitizen Defendants

Chapter 163 of the Acts of 2026 contains provisions governing immigration-status inquiries, bail, civil arrests at courthouses, access to counsel in detention, and T- and U-visa certifications. Massachusetts Chapter 163 Changes Immigration Enforcement and Criminal Cases identifies each provision’s effective date and requirements.

Criminal Defense Consultation

Serpa Law Office represents defendants at every stage of the Massachusetts criminal process in the Boston Municipal Court, District Courts, and Superior Court. The Massachusetts District Courts and Boston Municipal Court directory lists the courts the firm serves.

To request a free, confidential consultation, call Serpa Law Office at 617-936-0201. The Boston office is at 20 Park Plaza, Suite 400A, and the Quincy Office is at 500 Victory Road, Suite 400A.