Form an LLC · MT
How to form an LLC in Montana
Montana LLCs are formed by filing Articles of Organization with the Montana Secretary of State, Business Services Division — the official filing fee is $35 (see the fee notes below). Corpus prepares and files it for $250 all-in, including your first year of registered-agent service.
What Montana requires
- Formation document
- Articles of Organization verified 2026-09-24
- Filing office
- Montana Secretary of State, Business Services Division verified 2026-09-24
- Montana filing fee for the Articles of Organization
- $35 Articles of Organization filing fee. verified 2026-09-30
- The fee schedule states $35 plus $50 for each series member, so a standard non-series LLC is not charged the series add-on. source
- Online filing
- Yes — You can form a domestic LLC online through the Montana Secretary of State filing portal. verified 2026-09-24
- Standard processing time
- Not yet verified by Corpus — check with Montana Secretary of State, Business Services Division
- Expedited options
- 24-hour processing fee $20; 1-hour processing fee $100 verified 2026-09-30
- The fee schedule states 24-hour and 1-hour processing fees and does not state a standard processing time. source
- Name requirement
- The name must contain “limited liability company,” “limited company,” or LLC, L.L.C., LC, or L.C. verified 2026-09-24
- Registered agent
- Required — Montana law requires an LLC to have a registered agent with a physical address in the state. verified 2026-09-24
- LLC statute
- Montana Limited Liability Company Act, MCA §§ 35-8-101 et seq. verified 2026-09-24
What you’ll need
The Corpus intake collects this information to prepare the filing. Some questions are asked only when they apply — for example, the management question is asked only when the company has more than one owner.
- What do you want to name the company?
- In a sentence, what will the business actually do?
- Where should official mail go — street, city, state, ZIP?
- What email should we use for this order?
- Which industry code fits this business?
- Besides you, will anyone else have authority to make decisions for the business?
- Who owns this company?
Montana asks nothing beyond the standard questions.
What it costs with Corpus
- State fees (filing fee + the state's processing charges)
- $35
- Registered agent, year one
- $100
- Corpus service
- $115
- Total at checkout
- $250
Registered agent renews at $99/yr after the included first year — cancel anytime. Itemized pricing for every state is on the price grid; how Corpus compares to other formation services is on the comparison page.
After you form: staying in good standing
- Annual report
- Annual report — domestic reports must be filed by December 1; the fee is waived January 1 through April 15 and is $35 after April 15. verified 2026-09-30
- The help page says the fee is waived through April 15, is $35 after that, and that a domestic report must be filed by December 1. source
- Report fee
- waived (filed between January 1 and April 15); $35 (filed after April 15) verified 2026-09-30
- Franchise or privilege tax
- $50 minimum corporate income tax — only if it elects federal C-corporation treatment and does business in Montana, or its partnership elects Montana’s pass-through entity tax. verified 2026-09-30
Comparing what registered-agent service costs after year one across providers? The comparison page publishes renewal prices.
Form it with your AI agent
You don’t have to do the intake here. Any agent that can open a link can run the whole thing — Corpus’s formation tools give it Montana’s requirements and live price, it asks you the questions above, and it hands back a prefilled link you review and pay. Paste this into your assistant:
Form an LLC in Montana for me with Corpus (corpuslaw.us). Use its formation tools to get Montana's requirements and price, ask me what you need, and give me the prefilled link.The guide is on /agents, the protocol reference is /docs/mcp, and the installable skill for this state is the Montana SKILL.md.
Sources
Every verified fact above names where Corpus read it and the date it was last verified. Sources marked secondary are third-party write-ups used only where an official page did not publish the answer.
- https://biz.sosmt.gov/forms — Formation document, Filing office; verified 2026-09-24
- https://sosmt.gov/wp-json/wp/v2/pages?slug=fees — State filing fee, Expedited options, State filing fee (note), Expedited options (note); verified 2026-09-30
- https://help.sosmt.gov/en/article/register-a-business-v0307u/ — Online filing; verified 2026-09-24
- https://mca.legmt.gov/bills/mca/title_0350/chapter_0080/part_0010/section_0030/0350-0080-0010-0030.html — Name requirement; verified 2026-09-24
- https://help.sosmt.gov/en-us/article/what-is-a-registered-agent-3z3you/ — Registered agent; verified 2026-09-24
- https://mca.legmt.gov/bills/mca/title_0350/chapter_0080/part_0010/sections_index.html — LLC statute; verified 2026-09-24
- https://help.sosmt.gov/en-us/article/how-do-i-file-my-annual-report-ywawrv/ — Annual report, Report fee, Annual report (note); verified 2026-09-30
- https://revenue.mt.gov/taxes/corporate-income-tax — Franchise or privilege tax, Franchise or privilege tax (note); verified 2026-09-30
- https://revenue.mt.gov/taxes/pass-through-entities/pass-through-entity-tax — Franchise or privilege tax, Franchise or privilege tax (note); verified 2026-09-30