Montana Pornography Laws (2026): No General Obscenity Ban

Montana's obscenity statute is narrower than most states': five of its six prohibitions require conduct aimed at a person under 18, and only one, the ban on advertising or promoting the sale of obscene material, applies no matter who the audience is. Nothing in it reaches an adult's private possession or viewing. Age verification, child exploitation, nonconsensual images, and public exposure are handled by separate statutes, several with unusual enforcement structures worth understanding before assuming Montana works like other states.

Is Pornography Legal in Montana? What the Obscenity Statute Does and Does Not Reach

Montana's obscenity statute, Mont. Code Ann. Section 45-8-201, is structured differently from most states' obscenity laws. Five of its six prohibitions are conditioned on conduct directed at a person under 18: selling or delivering obscene material to a minor, presenting an obscene performance to a minor, publishing or exhibiting obscene material to a minor, performing an obscene act before a minor, and creating, buying, or possessing obscene material with the purpose of disseminating it to a minor.

The sixth, subsection (1)(f), has no age element. It reaches anyone who "advertises or otherwise promotes the sale of obscene material or materials represented or held out by the person to be obscene," whoever the audience is. That is a general-application prohibition, so it is not accurate to say Montana has no adult-facing obscenity offense at all.

The statute also carries a Miller-form definition of obscenity in subsection (2): material depicting perverted or patently offensive ultimate sexual acts, masturbation, excretory functions, or lewd exhibition of the genitals that, taken as a whole, appeals to the prurient interest under contemporary community standards, portrays that conduct in a patently offensive way, and lacks serious literary, artistic, political, or scientific value. A violation carries a fine of $500 to $1,000 and/or up to six months in county jail.

What the statute does not do is reach an adult's private possession or viewing of obscene, non-CSAM material, or a plain adult-to-adult sale, delivery, or exhibition as such, which subsections (1)(a) through (1)(e) criminalize only when a minor is the recipient. Those are genuine absences in Montana law, not exceptions written into the statute.

18 U.S.C. Section 2257, the federal record-keeping requirement for producers of sexually explicit content, applies in Montana regardless of state law and is not created by any Montana statute.

Montana's Age-Verification Law: Private Lawsuits Only

Montana requires age verification for adult content, but the law's enforcement mechanism has changed significantly since it was first enacted. Mont. Code Ann. Section 30-14-159, originally enacted as SB 544 in 2023 and amended by Chapter 199, Laws of 2025, requires a commercial entity that publishes material harmful to minors on a website to use reasonable age-verification methods, effective January 1, 2024.

The significant change came in 2025: an amendment stripped the Montana Attorney General of any authority to enforce the statute. The law now states that it "may only be enforced by individuals claiming damages," meaning only a private civil lawsuit, not a state enforcement action, can hold a noncompliant site accountable.

That amendment had a direct legal consequence. Free Speech Coalition, Inc. v. Knudsen (D. Mont., CV 24-67-M-DWM), the industry's federal challenge to the law, was dismissed in August 2025 for lack of Article III standing: even assuming the Attorney General kept enough connection to the law's enforcement to be sued, an injunction against him would not have redressed the plaintiffs' injury because private individuals could still sue under the law. The dismissal did not evaluate or strike down the underlying law. Montana's age-verification requirement, narrowed to private civil enforcement, remains in effect.

For the full compliance picture, see the Montana age-verification law page.

Child Sexual Abuse Material and Other Offenses Against Minors

Montana's sexual abuse of children statute, Mont. Code Ann. Section 45-5-625, covers employing, using, or permitting a child in an exhibition of sexual conduct, photographing or filming such conduct, persuading a child under 16 to engage in sexual conduct, and processing, distributing, or possessing such material. Under subsection (2)(a), a general violation, including production and distribution, is punishable by life imprisonment or a state prison term not to exceed 100 years, with a fine of up to $10,000 and no statutory minimum. Subsection (2)(b) adds a floor only when the victim is under 16, or is believed to be: life imprisonment, or a term of not less than 4 years and not more than 100 years, with the same $10,000 fine cap. Possession specifically carries a fine of up to $10,000 and up to 10 years in prison.

Penalties increase sharply when the victim is young. When the victim was 12 or younger and the offender was 18 or older, the law mandates a 100-year prison term, with no suspension or deferral of the first 25 years and no parole eligibility during that period, along with a fine of up to $50,000, mandatory sex-offender treatment, and lifetime supervision with satellite-based monitoring after release.

Montana handles cases involving minors who create or share images of themselves or other minors through a separate legal framework, covered on the Montana sexting laws page rather than duplicated here.

Nonconsensual Intimate Images (Revenge Porn)

Montana addresses nonconsensual intimate images within its privacy-in-communications statute, Mont. Code Ann. Section 45-8-213. Subsection (1)(d) criminalizes publishing, distributing, or disclosing a real or digitally fabricated intimate image of an identifiable person without their consent, done with the purpose to terrify, intimidate, threaten, harass, injure, or obtain money or other valuable consideration; subsection (1)(e) separately covers possessing such an image and threatening to disclose it, but its only purpose element is obtaining money or other valuable consideration, so a threat made solely to harass falls outside it. A first offense under either subsection is a misdemeanor, punishable by a fine of up to $500 and/or up to six months in county jail. A second or subsequent conviction is a felony, punishable by up to 5 years in prison and/or a fine of up to $25,000. The statute exempts voluntary public exposure, disclosures made in the public interest, law-enforcement reporting, and historic, artistic, scientific, or educational material.

This state-law claim is separate from the federal Take It Down Act, which requires platforms to remove nonconsensual intimate imagery, including AI-generated deepfakes, once notified. For platform removal steps and a state-by-state comparison, see Revenge Porn Laws by State.

Public Exposure, Including by Electronic Means

Montana's indecent exposure statute, Mont. Code Ann. Section 45-5-504, covers knowingly or purposely exposing genitals or intimate parts under circumstances likely to cause affront or alarm, done to abuse, humiliate, harass, or degrade another person, or to arouse or gratify sexual desire. Notably, the statute reaches exposure "by any means including electronic communication," so it is not limited to in-person conduct.

A first offense carries a fine of up to $500 and/or up to six months in county jail. A second conviction carries a fine of up to $1,000 and/or up to a year. Indecent exposure to a minor is a separate offense, not a sentencing enhancement, and it is defined narrowly: the offender must know the conduct will be observed by a person under 16, or believe the person to be under 16, and must be more than 4 years older than that victim. Exposure observed by a 16- or 17-year-old does not fall within it. The offense carries a fine of up to $50,000 and a state prison term of not less than 4 years, up to 100 years, unless the judge makes a written finding of good cause to impose a term of less than 4 years.

Adult Businesses in Montana

Montana has a statewide sexually-oriented-business rule on the books, but a federal court has blocked the state from enforcing it. Mont. Code Ann. Sections 45-8-117 and 45-8-118 define a "sexually oriented business" as a nightclub, bar, restaurant, or similar commercial enterprise that provides live nude entertainment or a sexually oriented performance to an audience of two or more people and authorizes on-premises consumption of alcohol, and they bar anyone under 18 from being on the premises during a sexually oriented performance. The statute states that the rule is uniform throughout the state and its political subdivisions.

Both sections were enacted as sections 1 and 2 of House Bill 359 (Ch. 719, Laws of 2023), and House Bill 359 is currently unenforceable. A federal district court preliminarily enjoined the Montana Attorney General and the Superintendent of Public Instruction from instituting, maintaining, or prosecuting any enforcement proceedings under the act, and on March 13, 2026 the Ninth Circuit affirmed that injunction in Imperial Sovereign Court of the State of Montana v. Knudsen, No. 23-3581, holding the plaintiffs likely to succeed on their First Amendment challenge because the act's sexually-oriented-performance provisions are content-based restrictions on expressive activity that are not narrowly tailored to a compelling government interest. The sections remain in the code, so the penalties below are what they provide on paper, but state officials are barred from bringing a case under them while the injunction stands.

On paper, the penalties fall on the owner, operator, manager, or an employee: a fine of $1,000 to $5,000 for a first offense, $2,500 to $5,000 for a second offense, and a flat $10,000 for a third or subsequent offense, along with possible county or municipal license revocation.

Penalties at a Glance

Practical Risks Beyond the Statute

State criminal exposure is only part of the picture. Workplace device and network policies can make viewing adult content on an employer's system grounds for discipline or termination even where no law was broken. Federal law adds further obligations regardless of Montana's rules: 18 U.S.C. Section 2257 imposes record-keeping duties on producers, and the federal Take It Down Act creates separate platform takedown obligations for nonconsensual intimate imagery. Anyone facing a specific legal question involving these laws should consult an attorney for advice specific to their situation.

More Montana Laws

• Montana Recording Laws (2026): Announcement Exception and Penalties
• Montana Deepfake Laws: AI Images, Voice Cloning & Penalties
• Montana Employee Monitoring Laws: Workplace Surveillance and Social Media
• Montana Court Records: How to Search the New Public Access Portals
• Montana Data Privacy Laws: MCDPA Consumer Rights Guide

Consult an attorney for advice specific to your situation.

Frequently Asked Questions

Is pornography illegal in Montana?

Private adult possession and viewing are not criminalized by any Montana statute. Most of Montana's obscenity statute, Mont. Code Ann. Section 45-8-201, reaches only conduct directed at a person under 18, such as selling or providing obscene material to a minor. One subsection, (1)(f), applies regardless of the audience's age: advertising or otherwise promoting the sale of obscene material. There is no subsection criminalizing a plain adult-to-adult sale as such.

Does Montana have a general obscenity law like other states?

Partly. Section 45-8-201 carries a Miller-form definition of obscenity in subsection (2), and subsection (1)(f) applies that definition to anyone who advertises or otherwise promotes the sale of obscene material, with no age element. The statute's other five prohibitions are all conditioned on conduct directed at a minor, so Montana has no subsection reaching a plain adult-to-adult sale, delivery, or exhibition, and none reaching private adult possession.

Does Montana require age verification for porn sites?

Yes, but with an unusual enforcement structure. Mont. Code Ann. Section 30-14-159 requires commercial websites publishing material harmful to minors to use reasonable age-verification methods. Since a 2025 amendment, the law can only be enforced through a private civil lawsuit by someone claiming damages; the Montana Attorney General no longer has authority to enforce it.

Was Montana's age-verification law struck down in court?

No. A federal lawsuit, Free Speech Coalition v. Knudsen, was dismissed in August 2025, but the dismissal was for lack of standing, because an injunction against the Attorney General could not stop private individuals from suing under the law, not a ruling on the law's constitutionality. The statute, as narrowed to private enforcement, remains in effect.

What are the penalties for child sexual abuse material in Montana?

Under Mont. Code Ann. Section 45-5-625, a general violation, including employing a child in sexual conduct or distributing such material, is punishable by life imprisonment or up to 100 years, with a fine up to $10,000 and no statutory minimum. A 4-year minimum applies under subsection (2)(b) only when the victim is under 16. Possession specifically carries up to 10 years and up to $10,000. When the victim is 12 or younger and the offender is an adult, the law mandates a 100-year term with no parole eligibility for the first 25 years.

Is sharing someone's intimate photos without consent illegal in Montana?

Yes. Mont. Code Ann. Section 45-8-213 makes it a crime to publish, distribute, or disclose real or digitally fabricated intimate images of an identifiable person without consent, done to terrify, intimidate, threaten, harass, or obtain money. A first offense is a misdemeanor punishable by up to $500 and 6 months; a second or later conviction is a felony punishable by up to 5 years and a $25,000 fine.

What counts as indecent exposure in Montana?

Mont. Code Ann. Section 45-5-504 covers knowingly or purposely exposing genitals or intimate parts under circumstances likely to cause affront or alarm, including exposure carried out by electronic communication. A first offense carries up to $500 and 6 months; a second conviction carries up to $1,000 and a year. Indecent exposure to a minor is a separate felony requiring a victim under 16 and an offender more than 4 years older; it carries a fine up to $50,000 and 4 to 100 years in state prison, though a judge may impose less than 4 years on a written finding of good cause.

Can adult businesses operate freely in Montana?

Those two sections bar anyone under 18 from being on the premises of a sexually oriented business, such as an alcohol-serving club offering live nude entertainment, during a sexually oriented performance, with fines escalating from $1,000 to $5,000 on a first offense up to a flat $10,000 plus possible license revocation on a third or later offense. But both were enacted as part of House Bill 359 (2023), and a federal court has preliminarily enjoined state enforcement of that act; the Ninth Circuit affirmed the injunction on March 13, 2026 in Imperial Sovereign Court of the State of Montana v. Knudsen. The sections remain on the books but the state cannot currently enforce them.