Last reviewed: May 23, 2026

Montana Law Overview

Montana's legal system reflects its frontier heritage and libertarian ethos. The state's 1972 constitution is considered one of the most progressive in the nation, with strong privacy, environmental, and individual rights protections. Montana legalized recreational marijuana in 2020 and has adopted permitless carry.

Montana's legal landscape is significantly influenced by federal public lands, which comprise roughly 30% of the state. Water rights, mineral rights, and land use law are critical legal domains. The state has enacted the Montana Firearms Freedom Act claiming that state-manufactured firearms are exempt from federal regulation, though this has not been upheld by federal courts.

MontanaGovernment & Politics

Main article: Montana State Government

Constitution

Montana is governed by a constitution. The first constitution was drafted by a constitutional convention in 1889, in preparation for statehood. Ninety percent of its language came from an 1884 constitution which was never acted upon by Congress for national political reasons. The 1889 constitution mimicked the structure of the United States Constitution, as well as outlining almost the same civil and political rights for citizens. However, the 1889 Montana constitution significantly restricted the power of state government, the legislature was much more powerful than the executive branch, and the jurisdiction of the District Courts very specifically described.[340] Montana voters amended the 1889 constitution 37 times between 1889 and 1972.[341] In 1914, Montana granted women the vote. In 1916, Montana became the first state to elect a woman, Progressive Republican Jeannette Rankin, to Congress.[342][343]

In 1971, Montana voters approved the call for a state constitutional convention. A new constitution was drafted, which made the legislative and executive branches much more equal in power and which was much less prescriptive in outlining powers, duties, and jurisdictions.[344] The draft included an expanded, more progressive list of civil and political rights, extended these rights to children for the first time, transferred administration of property taxes to the counties from the state, implemented new water rights, eliminated sovereign immunity, and gave the legislature greater power to spend tax revenues. The constitution was narrowly approved, 116,415 to 113,883, and declared ratified on June 20, 1972. Three issues that the constitutional convention was unable to resolve were submitted to voters simultaneously with the proposed constitution. Voters approved the legalization of gambling, a bicameral legislature, and retention of the death penalty.[345]

The 1972 constitution has been amended 31 times as of 2015.[346] Major amendments include establishment of a reclamation trust (funded by taxes on natural resource extraction) to restore mined land (1974); restoration of sovereign immunity, when such immunity has been approved by a two-thirds vote in each house (1974); establishment of a 90-day biennial (rather than annual) legislative session (1974); establishment of a coal tax trust fund, funded by a tax on coal extraction (1976); conversion of the mandatory decennial review of county government into a voluntary one, to be approved or disallowed by residents in each county (1978); conversion of the provision of public assistance from a mandatory civil right to a non-fundamental legislative prerogative (1988);[347] a new constitutional right to hunt and fish (2004); a now-defunct prohibition on same-sex marriage (2004); a prohibition on new taxes on the sale or transfer of real property (2010), and a constitutional provision codifying abortion rights (2024).[346][348] In 1992, voters approved a constitutional amendment implementing term limits for certain statewide elected executive branch offices (governor, lieutenant governor, secretary of state, state auditor, attorney general, superintendent of public instruction) and for members of the Montana Legislature. Extensive new constitutional rights for victims of crime were approved in 2016.[349]

The 1972 constitution requires that voters determine every 20 years whether to hold a new constitutional convention. Voters turned down a new convention in 1990 (84 percent no)[350] and again in 2010 (58.6 percent no).[351]

Executive

See also: List of governors of Montana

Montana has three branches of state government: legislative, executive, and judicial. The executive branch is headed by an elected governor. The governor is Greg Gianforte, a Republican elected in 2020. There are also nine other statewide elected offices in the executive branch: Lieutenant Governor, Attorney General, Secretary of State, State Auditor (who also serves as Commissioner of Securities and Insurance), and Superintendent of Public Instruction. There are five public service commissioners, who are elected on a regional basis. (The Public Service Commission's jurisdiction is statewide.)

There are 18 departments and offices which make up the executive branch: Administration; Agriculture; Auditor (securities and insurance); Commerce; Corrections; Environmental Quality; Fish, Wildlife & Parks; Justice; Labor and Industry; Livestock; Military Affairs; Natural Resources and Conservation; Public Health and Human Services; Revenue; State; and Transportation. Elementary and secondary education are overseen by the Office of Public Instruction (led by the elected superintendent of public instruction), in cooperation with the governor-appointed Board of Public Education. Higher education is overseen by a governor-appointed Board of Regents, which in turn appoints a commissioner of higher education. The Office of the Commissioner of Higher Education acts in an executive capacity on behalf of the regents and oversees the state-run Montana University System.

Independent state agencies not within a department or office include the Montana Arts Council, Montana Board of Crime Control, Montana Historical Society, Montana Public Employees Retirement Administration, Commissioner of Political Practices, the Montana Lottery, Office of the State Public Defender, Public Service Commission, the Montana School for the Deaf and Blind, the Montana State Fund (which operates the state's unemployment insurance, worker compensation, and self-insurance operations), the Montana State Library, and the Montana Teachers Retirement System.

Sourced from Wikipedia (CC-BY-SA 3.0).

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Montana

Montana state laws, regulations, court decisions, and active legislation

Capital: HelenaPopulation: 1,084,225
Federal & State Law Editorial TeamLast reviewed: April 2026

Montana Court Structure

Montana's court system includes city courts, justice courts, district courts (organized into 22 judicial districts), the Workers' Compensation Court, and the Montana Supreme Court. Montana does not have an intermediate appellate court — all appeals go directly to the Supreme Court. All judges are elected in nonpartisan elections.

Highest Court

Supreme Court of Montana

Chief Justice

Mike McGrath

100 total judges

Trial Courts
  • District Court
  • Justice's Court
  • City Court
Specialized Courts
  • Water Court
  • Small Claims Court
  • Youth Court
  • Workers' Compensation Court

Montana has no intermediate appellate court; all appeals go directly to the Supreme Court. The state has a specialized Water Court that adjudicates water rights claims, critical for this western state.

Notable Montana Legal Distinctions

  • Montana's 1972 constitution includes the right to a clean and healthful environment
  • The state has no intermediate appellate court
  • Montana's Firearms Freedom Act claims state-made guns are exempt from federal regulation
  • The state constitution explicitly protects individual privacy
  • Montana allows speed limits to be set as 'reasonable and prudent' on some roads

Montana Legal Landscape

Montana's legal landscape is shaped by its libertarian tradition, expansive public lands, and progressive 1972 constitution. The state has permissive gun and cannabis laws, strong environmental rights, and significant legal activity around federal lands management, water rights, and mineral extraction.

Key Montana Laws (24)

Driving Under the Influence

Montana prohibits driving with a BAC of 0.08% or higher, or while impaired by drugs. First offenders face jail, fines, and license suspension. Fourth offenses become felonies with prison time and chemical dependency treatment.

Mont. Code Ann. § 61-8-1002duicriminaltraffic
active

Permitless Carry and Firearms Freedom Act

Montana allows permitless concealed carry for those 18+. No assault weapon bans, magazine limits, or waiting periods. The Firearms Freedom Act claims state-made guns are exempt from federal regulation. Castle Doctrine applies with no practical duty to retreat.

§ 45-8-321firearmscriminal
active

Montana Marijuana Regulation and Taxation Act (Initiative 190)

Montana legalized recreational marijuana in 2020, allowing adults 21+ to possess 1 ounce and grow 2 mature plants. A 20% state tax applies. Counties may opt out via voter referendum. Prior marijuana convictions are eligible for resentencing and expungement.

§ 16-12-201cannabiscriminal
active

Wrongful Discharge from Employment Act

Montana is the only state that has abolished at-will employment. Employers must have good cause to fire employees who have passed probation (default 1 year). Wrongful discharge remedies include up to 4 years of lost wages. Punitive damages require fraud or malice. This law replaces common-law wrongful termination claims.

§ 39-2-904employmentwrongful dischargelabor
active

Parenting Plans and Best Interest Factors

Montana requires parenting plans in custody cases, with decisions based on the child's best interests. No gender preference is allowed. Parents with domestic violence history face a presumption against custody. Each parent must submit a proposed plan covering the residential schedule, responsibilities, and dispute resolution. Modifications require changed circumstances.

§ 40-4-212family lawcustodyparenting
active

Assault

Montana defines assault as causing bodily injury, threatening injury, or insulting physical contact. Simple assault is a misdemeanor with up to 6 months jail. Aggravated assault with weapons or serious injury is a felony carrying up to 20 years prison.

Mont. Code Ann. § 45-5-201assaultcriminal
active

Aggravated Assault (Battery)

Montana folds battery into its assault statutes. Aggravated assault — causing serious injury or using a weapon — is a felony with up to 20 years prison and $50,000 fine. Restitution to victims is mandatory.

Mont. Code Ann. § 45-5-202batterycriminal
active

Criminal Possession of Dangerous Drugs

Montana criminalizes possession of dangerous drugs, with penalties varying by substance and quantity. First offenses for most drugs are felonies with up to 5 years prison. Treatment court diversion is available for eligible defendants.

Mont. Code Ann. § 45-9-102drugscriminal
active

Theft

Montana theft involves taking property to deprive the owner. Theft of $1,500 or less is a misdemeanor; above that amount it becomes a felony with up to 10 years prison. Stealing firearms, livestock, or vehicles brings enhanced penalties regardless of value.

Mont. Code Ann. § 45-6-301theftcriminal
active

Dissolution of Marriage

Montana grants no-fault divorce when the marriage is irretrievably broken — shown by 180-day separation or serious discord. A 90-day residency is required. Courts handle equitable property division, support, and parenting plans.

Mont. Code Ann. § 40-4-104divorcefamily
active

Best Interest of the Child — Parenting Plans

Montana custody decisions follow the child's best interest, weighing parental wishes, child adjustment, abuse history, and dependency issues. Courts favor continuing contact with both parents and require detailed parenting plans.

Mont. Code Ann. § 40-4-212custodyfamily
active

Child Support Guidelines

Montana calculates child support using state guidelines based on both parents' income, healthcare, and parenting time. Deviations require written justification. Modifications are available with substantial change in circumstances or every 36 months.

Mont. Code Ann. § 40-4-204child supportfamily
active

Minimum Wage

Montana's minimum wage is $10.30 per hour as of 2024, with annual inflation adjustments. Tipped workers must receive the full minimum wage — no tip credit allowed. Very small businesses have a lower $4.00 rate but must comply with federal law if applicable.

Mont. Code Ann. § 39-3-409minimum wageemployment
active

Wrongful Discharge from Employment Act

Montana is the only US state that rejects pure at-will employment after a probationary period (default 12 months). Employees can sue for wrongful discharge if fired without good cause. Damages include up to 4 years of lost wages plus possible punitives.

Mont. Code Ann. § 39-2-904at will-employmentemployment
active

Wage Payment Requirements

Montana requires regular paydays at least every 10 business days. Discharged employees must be paid immediately (or within 15 days under a written policy). Late payment can incur a penalty of up to 110% of wages owed.

Mont. Code Ann. § 39-3-205wage paymentemployment
active

Security Deposits

Montana does not cap security deposits, but landlords must return them within 30 days (10 days if no deductions) with an itemized list. Failure to comply allows tenants to sue for the deposit plus damages and attorney fees.

Mont. Code Ann. § 70-25-201security deposithousingtenant rights
active

Eviction Notices and Procedures

Montana eviction requires written notice: 3 days for unpaid rent, 14 days to cure other lease violations. Self-help eviction by landlords is illegal and exposes them to damages of three months' rent plus attorney fees.

Mont. Code Ann. § 70-24-422evictionhousingtenant rights
active

Montana Limited Liability Company Act

Montana LLCs form by filing articles of organization with the Secretary of State. Members get limited liability protection. The state has no franchise tax and allows relatively anonymous ownership through registered agents.

Mont. Code Ann. § 35-8-201llcbusiness
active

Montana Consumer Protection Act

Montana's Consumer Protection Act bars unfair or deceptive business practices. Consumers can sue for actual damages or $500 (whichever is greater), plus attorney fees. Willful violations trigger treble damages, and the state can seek $10,000 per violation.

Mont. Code Ann. § 30-14-103deceptive practicesconsumer
active

New Motor Vehicle Warranty Act (Lemon Law)

Montana's lemon law covers new vehicles for 2 years or 18,000 miles. After 4 failed repair attempts or 30 days out of service for the same defect, consumers can demand a replacement or refund. Attorney fees are recoverable if litigation is needed.

Mont. Code Ann. § 61-4-501lemon lawconsumer
active

Intestate Succession

When someone dies without a will in Montana, the spouse usually takes everything if all children are also the spouse's. With children from prior relationships, the spouse gets $150,000 plus half the rest. Otherwise the estate passes to children, parents, or siblings.

Mont. Code Ann. § 72-2-112probateestate
active

Execution of Wills

A valid Montana will must be written, signed by the testator (18+ and of sound mind), and either witnessed by 2 people or notarized. Holographic wills handwritten by the testator are valid without witnesses. Self-proved wills speed up probate.

Mont. Code Ann. § 72-2-522willsestate
active

Speed Limits

Montana's interstate speed limit is 80 mph for cars (65 for trucks). Most rural highways are 70 mph daytime and 25 mph in cities. Drivers can be cited for unsafe speed even below the posted limit. Montana doesn't use a points system.

Mont. Code Ann. § 61-8-303speedingtraffic
active

Small Claims Court Jurisdiction

Montana small claims court handles disputes up to $7,000. Attorneys generally cannot represent parties unless both sides have lawyers. Plaintiffs are limited to 10 cases per year. Either party can appeal to District Court within 10 days.

Mont. Code Ann. § 25-35-502small claimscivil procedure
active

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This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.