AI for solo lawyers in Montana

Solo and small-firm lawyers in Montana are using AI to draft and review contracts faster. Unlike many states, Montana has not published an ethics opinion specifically on generative AI. That does not mean there are no rules: the Montana Rules of Professional Conduct apply to AI like any other tool, and ABA Formal Opinion 512 is the obvious reference point. This guide covers what applies, the Montana contract issues worth checking, and a practical workflow in Microsoft Word with LexDraft.

Last checked: 17 October 2026. Guidance changes; check the State Bar of Montana, the Montana Supreme Court and your district court for anything newer before relying on this page.

Is there a Montana ethics opinion on AI?

Not yet, as of October 2026. We could not find an ethics opinion on generative AI in the State Bar of Montana's published ethics opinions. Some courts have acted: the Fourth Judicial District Court (Missoula and Mineral Counties) Rules of Practice, revised on 31 October 2025, include Rule 3(G), which requires a party that uses generative AI in a filing to disclose the tool and how it was used and to certify that the AI-assisted content, including citations, was checked for accuracy.

Until there is, three sources set the standard for Montana lawyers:

• The Montana Rules of Professional Conduct. Montana's rules are based on the ABA Model Rules, so the duties of competence (Rule 1.1), communication (Rule 1.4), reasonable fees (Rule 1.5), confidentiality (Rule 1.6) and supervision of lawyers and nonlawyer assistance (Rules 5.1 and 5.3) all reach AI use. Check the Montana version of each rule and its comments, which can differ from the Model Rules.
• ABA Formal Opinion 512 (July 2024). It is not binding in Montana, but it is the most detailed national guidance. In short: understand the capabilities and limits of the tool you use; assess the risk before entering client information into a self-learning tool and get informed consent where that risk requires it; tell clients about AI use when the circumstances call for it; verify output; supervise staff who use AI; and do not bill for time you did not spend. Charging for learning a general-purpose tool is generally not appropriate.
• Court rules and standing orders. In the Fourth Judicial District, Rule 3(G) requires disclosure and certification of generative AI use in filings (see above). Other Montana courts and federal judges may have their own requirements, so check local rules and standing orders. Lawyers around the country have been sanctioned for filing briefs with invented citations.

Practical rules for a Montana solo practice

• Read the vendor's terms. Know whether your inputs are stored, for how long, and whether they are used to train models.
• Keep a short written AI policy, even for a one-lawyer firm, and apply it to any staff or contract help.
• Verify every output. AI review can miss issues or be wrong.
• Consider an engagement letter sentence on AI use, and price AI-assisted work fairly. Flat fees fit it well.

Montana contract issues to check on every review

• Non-competes: MCA 28-2-703 makes contracts restraining a lawful profession, trade or business void, with statutory exceptions for the sale of goodwill (28-2-704) and partners on dissolution (28-2-705). Montana courts still review employee covenants for reasonableness, so draft narrowly.
• Limitation period: for actions filed on or after 1 October 2025, the period for actions on a written instrument is six years (MCA 27-2-202(1), amended by SB 143 in 2025), down from eight. Older summaries still say eight.
• Construction indemnity: MCA 28-2-2111 voids clauses in construction contracts that require a party to indemnify, defend or insure another party against that party's own negligence, recklessness or intentional misconduct.
• Consumer data: the Montana Consumer Data Privacy Act (MCA 30-14-2801 and following) applies to businesses that control or process the personal data of at least 25,000 Montana consumers, or 15,000 where more than 25% of revenue comes from selling personal data. Check controller and processor terms. See our DPA review guide.

A contract review workflow for a Montana solo practice

LexDraft is a Word add-in from Microsoft AppSource. It opens as a side panel in Word 365 (Windows and Mac), Word 2021 and Word on the web, so the contract never leaves the tool you already draft in.

1. Open the contract in Word and open LexDraft in the side panel.
2. Set the job. For an NDA, SaaS MSA, DPA or services agreement, use the matching built-in playbook. For other contracts, select Montana and run the review so LexDraft looks for state-specific red flags.
3. Triage by severity. Findings are graded Critical, High, Medium or Low, and LexDraft flags standard terms that are missing.
4. Run the quick checks. The defined-term and cross-reference checks are rule-based and run without AI.
5. Accept or reject each redline. Accepted changes land as native Word tracked changes, ready for the other side.
6. Verify and sign off. You, as counsel, check every output before it goes out, which is what the rules of professional conduct require.

What LexDraft does not do

LexDraft does not give legal or ethics advice, track bar opinions for you, or file anything with a court. It has playbooks for NDAs, SaaS MSAs, DPAs and services agreements only; other contracts get a general review. Nothing changes in your contract until you accept a redline.

Checklist: choosing an AI tool

• Does it train on your client documents? LexDraft does not use customer documents to train models. Read the security page for how documents are handled.
• Can you see and control every change? LexDraft proposes word-level redlines you accept or reject.
• Is the price predictable? The Free plan has 5,000 generated words a month with no time limit and no credit card. Professional is $99 a month or $990 a year for 100,000 words. Business is $199 a month or $1,990 a year with unlimited words.
• Does it fit how you already work? A Word add-in means no uploads, no new editor and no copy-paste between apps.

Other states

See AI for solo lawyers by state for guides to all 50 states and D.C., or read the seven-step contract review workflow for solo lawyers.

This guide is general information, not legal advice. LexDraft does not give legal advice; qualified counsel must review every draft. Spotted something out of date? Email support@lexdraft.ai and we will fix it.