How to Amend Your LLC or Corporation in Montana (2026 Guide)

What a Montana Articles of Amendment Changes

A Montana Articles of Amendment rewrites the Articles of Organization for an LLC or the Articles of Incorporation for a corporation. It carries a change of entity name, a change of purpose, a change to the registered office or agent, a shift between member-managed and manager-managed operation, a change to authorized shares, and any other clause carried in the original filing. The fee is $15, the lowest amendment charge of any state, and the Secretary of State returns it in 5 to 7 business days or in one business day for an extra $20.

Montana's whole entity schedule is priced this way. Forming an LLC costs $35, the annual report fee is waived when the report is filed by April 15, and the Montana amendment costs $15. Nothing about keeping a Montana record accurate is expensive, which means every cost that arises in this area is a cost of not filing rather than a cost of filing.

What the low fee hides

Cheap filings encourage a particular habit: owners batch changes, waiting until several things need correcting before opening the record. Meanwhile the register shows an old name, a former office and sometimes an agent who has resigned. Montana compounds this because its Certificate of Existence carries the entity's annual report compliance status on the face of the document. When a bank, a lender or a counterparty in another state orders one, they are told whether the company keeps its filings current, not merely whether it exists. A batching habit is legible to anybody who asks for the certificate.

Annual report, amendment and agent change

Three filings, three jobs. The annual report is due April 15, currently with no fee, and confirms the record for the year without editing the Articles. The Statement of Change of Registered Agent, at $15, moves the agent line only. The Articles of Amendment is the only document that changes the Articles themselves. Typing a new name into the April report leaves the charter exactly as it was; the Montana annual report guide covers what that filing does and does not cover.

Filing a Montana Amendment Step by Step

Montana amendment at a glance

Five steps. In Montana the paperwork is short enough that most of the elapsed time is internal rather than governmental.

Step 1: Record the approval

The Montana Limited Liability Company Act (Mont. Code § 35-8) takes the amendment threshold from the operating agreement and applies defaults where none is written: member-managed operation, per-capita voting and distributions weighted to capital contributions. Voting and economics therefore point in different directions by default, which is worth understanding before a vote rather than during one. Corporations adopt a board resolution and then hold the shareholder vote. Montana asks for none of it at the counter, so the signed consent is filed with the operating agreement for the benefit of the next lender or buyer who asks.

Step 2: Clear the name and the assumed business name

Test the exact new string, designator included, in the Montana business search, and hold it with a name reservation if consents are still circulating. Montana registers assumed business names separately, so a company trading under a brand should update the assumed business name in the same pass rather than leaving two records that describe different companies.

Step 3: Prepare the Articles of Amendment

The filing needs the current entity name exactly as the register holds it, the entity identification number, the article being amended restated as it will read after the change, the effective date, and the signature of an authorized member, manager or officer. Restating rather than describing is the requirement that catches self-filers. Blank documents are on the Montana forms page.

Step 4: File at biz.sosmt.gov

Montana runs entity filings through its online system, so the amendment is submitted, paid and tracked in one session. The fee is $15, standard turnaround is 5 to 7 business days, and $20 buys next-business-day handling. Because the expedite costs more than the filing, treat it as a scheduling tool rather than a default. Current charges are on the Montana filing fees page.

Step 5: Carry the change outward

Retitle bank and merchant accounts against the stamped amendment, file IRS Form 8822-B where the responsible party or address changed, refresh the EIN record, reissue insurance certificates, update contractor and outfitter licences and any federal permits the business holds, and correct the assumed business name. Then put April 15 in the calendar so the next annual report is filed against the corrected record.

Penalties and Real Costs of a Stale Montana Record

Montana's penalties are modest by design. The expensive part is what other people do when the record does not match the business.

The April 15 report and involuntary dissolution

The annual report is due April 15, currently with no fee, and the schedule charges $35 once the date passes. Those are small numbers, and that is precisely why the deadline gets missed. Keep missing it and Montana dissolves the entity involuntarily, the name is released, and the company is trading without a live registration. Reinstatement is available for about 24 months and means an application plus the missed reports and charges; the Montana reinstatement guide covers the route. Past that window the entity, its formation date and its name are gone, and rebuilding means a new EIN, new bank accounts and an assignment for every contract signed in the old name.

What a Certificate of Existence tells a lender

Because Montana's certificate reports annual report compliance as well as existence, an entity that is behind cannot present a clean document. Equipment finance, ranch and agricultural lending, and qualification in another state all run on that certificate. A borrower who is three weeks from closing and discovers the certificate reports a delinquency is now solving a $35 problem on a schedule that costs a great deal more than $35.

Service of process and the agent line

Montana directs service of process and official notice to the registered agent on the record under Mont. Code § 35-7-103. Many Montana entities are managed from outside the state, which makes the agent line the only reliable channel between the courts and the owners. When the agent resigns or the address goes cold, a summons is served, the answer period runs, and the first anyone hears of it is a judgment. The correction is a $15 statement; the sequencing is in the Montana agent change guide and the standing service is our registered agent offering.

Three Montana Amendments in Practice

Composites drawn from filings of this kind. Montana's fees and turnarounds are the real ones; the businesses are illustrative.

Scenario one: a single-member outfitter changes name

A one-member guiding and outfitting LLC near Bozeman had been formed under a name that described a service it no longer offered. Action taken: cleared the new string, signed a sole-member consent, filed the Articles of Amendment standard, refiled the assumed business name, and reissued the certificate of insurance the licensing board holds. Cost: $15. Timeline: 6 business days. Outcome: the licence, the insurance certificate and the register all read the same name before the season opened. Doing it in the off season also avoided the expedite fee, which would have cost more than the filing.

Scenario two: a ranch corporation restructures its shares

A family ranching corporation with five shareholders authorized a new class of non-voting shares so the operating siblings kept control while the others took economics. Authorized shares are stated in the Articles of Incorporation, so a filing was required. Action taken: the board adopted a resolution recommending the amendment, shareholders approved it in writing, and the amendment was filed with an effective date matching the start of the ranch's fiscal year. Cost: $15 plus $20 for next-day handling because the lender wanted the amended charter before renewing an operating line. Timeline: one business day at the Secretary of State after three weeks of family negotiation. Outcome: the line renewed on schedule against a charter that matched the share ledger.

Scenario three: a Montana LLC registered in Idaho and Wyoming

A heavy haulage LLC formed in Montana also held certificates of authority in Idaho and Wyoming. A name change followed a buyout of one of three members. Action taken: Montana first, because both neighbours require a certified copy of the home-state amendment, then the foreign updates. Timeline: one business day in Montana, then about four weeks for the neighbours. Outcome: three matching records and a motor carrier authority that did not have to be re-verified twice. Left alone, Idaho charges nothing annually and Wyoming $60, so the visible saving of ignoring them is almost nothing while the exposure on interstate permits is real. The sequence is on the Montana foreign qualification page.

Five Mistakes That Stall Montana Amendments

Mistake 1: Batching changes until something forces them

What it is: leaving a name, address or agent change unfiled because the fee is small and nothing is urgent. Why it happens: at $15 a filing there is no cost pressure to act, and no invoice arrives to prompt it. Consequence: the register carries several years of drift at once, and the Certificate of Existence reports the compliance history to whoever ordered it. Prevention: file each change when it happens; the fee is too small to justify the coordination cost of batching.

Mistake 2: Treating the April report as the amendment

What it is: entering a new name or manager on the annual report. Why it happens: the report asks for similar information and is the filing owners see. Consequence: a report filed, the Articles unchanged, and the mismatch surfacing at a bank or a licensing board. Prevention: report confirms, amendment changes, agent statement moves the agent.

Mistake 3: Letting an absent manager hold the agent role

What it is: naming a member who lives outside Montana, or an address nobody attends, as the registered agent. Why it happens: the appointment was made at formation when the members expected to be in the state regularly. Consequence: service of process lands somewhere it is not read and a default judgment follows. Prevention: appoint an agent with a monitored Montana street address and file the $15 statement when that changes.

Mistake 4: Restating nothing

What it is: describing the change in the amendment instead of setting out the amended article as it will read. Why it happens: the online form accepts free text and the intent looks clear. Consequence: the filing is returned for correction, and the 5 to 7 day queue starts again. Prevention: quote the amended article in full using the original numbering.

Mistake 5: Forgetting the licences that carry the name

What it is: amending the register while contractor, outfitter, transport and municipal licences continue in the old name. Why it happens: no state filing prompts them. Consequence: an inspection or a renewal finds a mismatch and the activity stops until it is resolved, which in a short Montana season is the whole cost. Prevention: list every licence before filing, update each against the stamped amendment, and keep April 15 on a compliance calendar.

How File.Business Handles a Montana Amendment

We pull the Secretary of State record and reconcile the name, agent and addresses against what the owners believe is filed, prepare the member consent or the board and shareholder resolutions, clear and reserve the new name, and file the Articles of Amendment through biz.sosmt.gov with the $15 fee, adding next-day handling only where a lender or a licence has a date. The $15 agent statement and the assumed business name refiling are handled alongside, and foreign-state updates are sequenced behind Montana with the certified copies each state requires. File.Business is a private filing service and not a law firm, and we act at your direction. The April 15 report can move to our annual report service so the certificate never reports a delinquency at the wrong moment.

Frequently Asked Questions

Doing this in Montana specifically: Montana articles of amendment covers the detail for this state, including the current fee and the exact form the agency expects.

Disclosure. File.Business is a private filing service, not a government agency and not a law firm. We prepare and submit filings at your direction, and nothing on this page is legal or tax advice. Filing fees, deadlines, and statutory references are current as of the last-updated date shown above and can change. Confirm current requirements with the relevant state agency before you file.