The 5 steps to change your registered agent in Montana. Source: Montana Secretary of State.
How to File
1
Choose Your New Registered Agent
Select an individual who is a Montana resident or a business entity authorized to conduct business in Montana. Your new agent must have a physical Montana address (not a P.O. Box) and be available during normal business hours to receive legal documents.
2
Obtain Written Consent
Get written consent from your new registered agent before filing. This ensures they understand their responsibilities and agree to serve as your agent. Keep this consent in your LLC records for future reference.
3
Complete the Statement of Change Form
File a Statement of Change of Registered Agent and/or Registered Office online through the Montana Secretary of State website at sosmt.gov or submit a paper form. Include your LLC's name, current agent information, and new agent details.
4
Pay the Filing Fee
Submit the required $15 filing fee. Online filings can be paid by credit card, while paper filings require a check or money order made payable to the Montana Secretary of State.
5
Update Your Records
Once the change is processed, update your internal LLC records and notify banks, vendors, and other business contacts of your new registered agent information. The change typically becomes effective immediately upon filing.
Ready to file your annual report?
Go directly to the Montana Secretary of State portal.
Your current registered agent is moving out of Montana or going out of business
You want to switch from a friend or family member to a professional service
Your registered agent is no longer reliable or responsive to legal documents
You're moving your business and need an agent at a new Montana address
This guide is general information, not legal or tax advice, and reading it does not create an attorney-client relationship. It reports what each state publishes about filing deadlines, fees, and the consequences of missing them, with the sources this page cites. It cannot tell you what your own company owes: the date turns on when and where you formed, states change these rules between our reviews, and in several states an entity-level tax falls due in a year when no report does. Confirm your own dates with the filing office named on this page before you rely on one here, because the penalty for missing a deadline can be administrative dissolution of the company.
Frequently Asked Questions
Changes filed online through the Montana Secretary of State website are typically processed immediately, while paper filings submitted to the Secretary of State's office usually take 3 to 5 business days. You'll file Form C-4, the "Change of Registered Agent or Registered Office" document, through either method.
Once the Montana Secretary of State approves your filing, the change becomes effective immediately. Your new registered agent can legally receive service of process the same day. This matters because any legal documents served on your old agent after the effective date won't validly notify your LLC, potentially causing you to miss critical deadlines or court appearances.
To avoid gaps in representation, submit your Form C-4 at least one week before your current agent's resignation takes effect. File online at sos.mt.gov for same-day processing, or mail the form with the $15 filing fee to ensure your transition is smooth and properly documented.
The filing fee for a Statement of Change of Registered Agent in Montana is $15, regardless of whether you file online through the Montana Secretary of State's Business Services Bureau or submit Form SOS-4B by mail. This flat fee covers the processing and recording of your agent change in Montana's official business records. Unlike some states that charge additional fees for expedited processing, Montana maintains uniform pricing for all registered agent changes. You'll pay this $15 fee once per change, if you're replacing your agent with another qualified individual or entity, you submit one form with one filing fee. This affordable fee means updating your registered agent won't significantly impact your business finances. To proceed, visit the Montana Secretary of State's website, download Form SOS-4B, complete it with your LLC's name, old agent details, and new agent information, then submit it with your $15 payment to finalize the change within 1 to 3 business days.
Yes, you can serve as your own registered agent for your Montana LLC if you meet two requirements: you must be a Montana resident and maintain a physical street address (not a PO box) within the state. However, this creates significant practical obligations. As your own registered agent, you're personally responsible for receiving and promptly forwarding all legal documents, lawsuits, and government notices during Montana business hours, missing a deadline could result in a default judgment against your LLC. To make this official, file Form LLC-2 (Application for Reservation of Name or Amendment) with the Montana Secretary of State's Business Services Bureau, paying the $15 filing fee. Most LLC owners ultimately hire a professional registered agent service ($100 to 300 annually) to eliminate this liability and ensure reliable document handling. If you're currently your own agent and want to change, submit the amendment form immediately with your new agent's details.
No, properly changing your registered agent won't affect your LLC's good standing in Montana. To change your registered agent, you must file a Statement of Change of Registered Agent (Form LLC-4) with the Montana Secretary of State Business Services Bureau within 15 days of the change taking effect. The filing fee is $15. However, failing to maintain a registered agent at all times or neglecting to update the information when required can trigger automatic administrative dissolution of your LLC by the Secretary of State. This means your business loses its good standing and its authority to carry on business other than winding up. To avoid dissolution, ensure your new registered agent's name and Montana street address are accurate on the Form LLC-4 before submission. File your change immediately at sos.mt.gov/businesses or mail it to the Secretary of State's office in Helena to maintain continuous good standing and compliance.
Montana allows you to file the Statement of Change of Registered Agent (Form SBD-4) both online through the Secretary of State's official portal at sosmt.gov and by traditional mail. Online filing through sosmt.gov is significantly faster, typically processing within 24 business hours, and provides immediate email confirmation of your filing, eliminating uncertainty about whether your submission arrived. If you mail the form to the Montana Secretary of State, Business Services Bureau in Helena, expect 5 to 7 business days for processing. The online filing fee is $15, matching the mailed submission fee. For LLC owners, filing online is the practical choice since registered agent changes directly affect your business's legal compliance and service of process notifications; delays could result in missed legal documents. To change your registered agent immediately, visit sosmt.gov, locate the LLC filing section, complete Form SBD-4 with your current registered agent information and new agent details, and submit payment by credit card.
Sources
Each entry below is a document recorded in our verified Montana sources, and each entry says what the document is. Some statutory text is read from an accurate mirror rather than from the state's own host, and those say so.
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Edmond Hui is a software engineer and serial entrepreneur based in New York who has founded multiple online businesses across e-commerce, media, and information publishing. Before transitioning into tech, he spent years as a commercial real estate professional closing deals totaling over 100,000 square feet, giving him firsthand experience with business formation and entity structuring. He built MyStateLLC to provide the free, state-specific LLC guidance he wished existed when forming his own companies.
