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Montana . Articles of Amendment

Amend your Montana entity's formation documents.

Montana requires Articles of Amendment whenever you change foundational details on your formation documents. This guide explains what triggers an amendment, what doesn't, the Montana Secretary of State fee, and how to file.

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When you need an amendment in Montana

Amendment required
  • Entity name change
  • Authorized shares change (Corps)
  • Business purpose change
  • Member or manager structure change (Member-Managed → Manager-Managed)
  • Duration changes
Amendment NOT required
  • Address change (use Statement of Change of RA or annual report)
  • Adding or removing members (Operating Agreement only)
  • Internal management changes
  • Officer turnover (Corps - reflect in next annual report)

Montana amendment fee

Most Montana amendments share the standard filing fee schedule. Specific amendments may differ.

File.Business preparation fee: $99. State fees passed through at cost.

FAQ

Frequently asked questions

When do I need an Articles of Amendment in Montana?
When changing entity name, authorized shares (Corps), business purpose, or governance structure.
How much does a Montana amendment cost?
Fee varies by amendment type. File.Business prepares amendment for $99 + state fee.
Do I need an amendment to change my Montana entity's address?
No. Use Statement of Change of Registered Agent or update via annual report.
Do I need an amendment to add a member to my Montana LLC?
Only if your formation documents named members. Otherwise, update your Operating Agreement.
How long does a Montana amendment take to process?
Standard processing varies. Expedite typically available.
Will my Montana EIN change after an amendment?
No. EIN stays the same unless you change entity structure (LLC → Corp).
Can File.Business handle a Montana amendment?
Yes. We prepare Articles of Amendment, file with the state, and update your Vault.

Ready to handle this the easy way?

Five minutes per filing. State fee passed through at cost. Audit trail and deadline tracking included.

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Disclosure. File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with the Montana Secretary of State or any Secretary of State office. You may file directly with the Montana Secretary of State. Information on this page is for general guidance only and is not legal, tax, or accounting advice. Fees and deadlines verified against the Montana Secretary of State as of June 2026 and may change. For entity-specific guidance, consult a licensed Montana attorney or CPA.

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File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with any Secretary of State office. You may file directly with the appropriate state agency. SOC 2 Type II audited. 220,000+ businesses formed since 2017.