Does Montana require attorneys to disclose AI use in court filings? No

Does Montana require attorneys to disclose AI use in court filings? No. Montana has no court rule, no bar ethics opinion, and no formal guidance on AI disclosure. No task force or commission has been announced. Montana is among the quietest states in the country on AI regulation for attorneys.

Montana shares characteristics with other rural Western states — a small bar, vast geography, significant solo practice, and courts spread across enormous distances. But Montana also sits in the Ninth Circuit, alongside California and Washington, two of the most active states nationally on AI regulation. That contrast between Montana's silence and its circuit neighbors' activity creates an unusual dynamic for practitioners who straddle state and federal practice.

Montana's Complete Inaction on AI

As of early 2026, Montana has taken no formal action on AI in legal practice. The Montana Supreme Court hasn't issued guidance. The State Bar of Montana hasn't published an ethics opinion on AI. No judicial task force or study committee has been formed. No legislation addressing attorney AI use has advanced. Montana's approximately 3,500 active attorneys — one of the smallest bars in the country — operate without state-specific AI guidance. The small bar size partly explains the inaction: there's limited institutional bandwidth for studying emerging technology issues when basic practice support demands attention.

Montana's Ethics Rules and AI

Montana's Rules of Professional Conduct follow the ABA Model Rules framework. Rule 1.1 (competence) requires understanding AI tools and their limitations. Rule 3.3 (candor toward the tribunal) prohibits submitting fabricated citations or unreliable legal analysis. Rule 1.6 (confidentiality) governs client data handling when using AI platforms. Rule 5.3 (responsibilities regarding nonlawyer assistance) makes attorneys accountable for AI-generated work product. The Office of Disciplinary Counsel enforces these rules. ABA Formal Opinion 512 provides the interpretive framework connecting existing ethics duties to AI use — it's the most authoritative guidance Montana practitioners have.

Rural Practice and AI: Montana's Reality

Montana is the fourth-largest state by area with one of the smallest populations. Attorneys in Billings, Missoula, Great Falls, and Helena serve clients across vast distances, and practitioners in smaller communities like Kalispell, Butte, or Miles City operate with even less infrastructure. AI tools that handle legal research, document drafting, and case analysis are force multipliers for these practitioners. But rural practice also means limited peer review, fewer CLE opportunities focused on technology, and less exposure to the national conversation about AI risks. When an AI tool hallucinates a citation for a solo practitioner in a remote Montana town, the verification burden falls entirely on one person with limited resources.

The Ninth Circuit Gap: Montana vs. Its Circuit Neighbors

Montana is in the Ninth Circuit with California, Washington, Oregon, Alaska, Idaho, Hawaii, Nevada, and Arizona. California has some of the most extensive AI regulatory activity in the country. Washington has been active on AI guidance. Oregon has addressed AI through multiple channels. The Ninth Circuit Court of Appeals has addressed AI issues in federal practice. For Montana attorneys who practice in federal court — the District of Montana covers the entire state from a single courthouse in multiple cities — Ninth Circuit expectations may significantly exceed anything Montana state courts require. The gap between what Ninth Circuit standards demand and what Montana's silence permits creates compliance risk for federal practitioners.

What Montana Practitioners Should Do

Build a framework scaled to Montana practice realities. For solo and small-firm practitioners: make citation verification a non-negotiable habit for every filing that involved AI assistance. Keep it simple — check every case cite against Westlaw or Lexis before you file. Create a brief written AI policy for your practice, even if you're the only attorney. For larger firms in Billings or Missoula: implement firm-wide AI policies covering approved tools, data handling, verification steps, and training. For anyone practicing in federal court: check the District of Montana's individual judge requirements and build to Ninth Circuit standards. Document your processes. Montana's eventual rules — whenever they arrive — will be easier to adopt if you've already been practicing responsible AI use.

The Bottom Line: Montana has no AI disclosure rule and no movement toward one, but Ninth Circuit standards apply to federal practice, and the state's rural, small-bar characteristics make self-imposed verification protocols essential for the solo and small-firm practitioners who dominate Montana's legal landscape.