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Montana law

Criminal Defense Laws in Montana.

Montana does not classify felonies or misdemeanors into subcategories or classes. Instead, each criminal statute specifies its own maximum penalty. Felonies carry more than 1 year in state prison, while misdemeanors carry up to 1 year in county jail. Montana allows expungement of misdemeanor records under certain conditions but does not permit felony expungement.

Last verified: 2026-02-25

State law

Statute of Limitations

No limit for deliberate homicide; 5 years for felonies; 1 year for misdemeanorsMont. Code Ann. § 45-1-205

There is no statute of limitations for deliberate homicide. Felony prosecutions must be commenced within 5 years. Misdemeanor prosecutions must be commenced within 1 year.

Exceptions

Sexual Offenses10 yearsMont. Code Ann. § 45-1-205(2)(c)

Prosecutions for certain felony sexual offenses, including sexual assault and sexual intercourse without consent, must be commenced within 10 years.

State law

Key Montana Statutes

Sentencing AuthorityMont. Code Ann. § 46-18-201

Grants judges sentencing authority including imprisonment, fines, restitution, suspended or deferred sentences, and community service. Judges may defer sentences up to 1 year for misdemeanors and up to 3 years for felonies.

Misdemeanor ExpungementMont. Code Ann. § 46-18-1104

A person convicted of misdemeanors may petition for expungement after completing all sentence requirements and maintaining a clean record for 5 years. Limited to one expungement order per lifetime but may cover multiple misdemeanor offenses. Certain offenses such as assault, DUI, and stalking are excluded from presumptive expungement.

A first DUI offense carries 24 hours to 6 months in jail and a $600 to $1,000 fine. The BAC limit is 0.08 for standard drivers and 0.04 for commercial drivers. Penalties escalate with aggravating factors such as passengers under 16 or prior offenses.

It is unlawful to operate a vehicle with a blood alcohol concentration of 0.08 or more, or while under the influence of alcohol or drugs to a degree that renders the person incapable of safely driving.

Every person charged with an offense punishable by incarceration has the right to an attorney. If the person cannot afford one, the court must appoint a public defender.

State law

Official Sources

Not Legal Advice

This page summarizes publicly available statutes and rules for informational purposes only. It does not constitute legal advice, and no attorney-client relationship is created by viewing this content. Laws change — always verify with the primary source or consult a licensed attorney in Montana.

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