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Montana . Contact directory

How to reach the Montana Secretary of State.

Direct phone number, hours, mailing and physical addresses, and the right phone for the right question. Plus the related Montana departments most business owners need.

Primary phone
406-444-3665
Mon-Fri 8am-5pm MT
Mailing address
P.O. Box 202801, Helena, MT 59620
Physical address
1301 East 6th Avenue, Helena, MT 59620
Fax
406-444-3976

The right phone for the right question

Franchise tax and corporate income tax
406-444-6900 (MT Department of Revenue, Corporate Income Tax)
Expedited filings
Standard 7-10 business days; +$20 (24-hour), +$100 (1-hour)
406-444-3665 (24-hour, 1-hour expedite)

Most calls to the Montana SoS are about things File.Business can answer instantly

"What is my entity's status?"
Run a search →
"When is my AR due?"
See AR rules →
"How do I change RA?"
Change RA →
"Can I reinstate?"
Reinstate →
FAQ

Frequently asked questions

What is the phone number for the Montana Secretary of State?
The primary phone for the Montana Secretary of State, Business Services Division is 406-444-3665. Office hours are Mon-Fri 8am-5pm MT.
What are the Montana Secretary of State office hours?
Office hours are Mon-Fri 8am-5pm MT. Online filings can be submitted 24/7.
What is the Montana Secretary of State mailing address?
Mailing address: P.O. Box 202801, Helena, MT 59620. Physical office: 1301 East 6th Avenue, Helena, MT 59620.
How do I speak to a person at the Montana Secretary of State?
Call 406-444-3665 during business hours.
Does the Montana Secretary of State offer expedited service?
Standard 7-10 business days; +$20 (24-hour), +$100 (1-hour).
Can I email the Montana Secretary of State?
Email contact varies by department.
Can I visit the Montana Secretary of State office in person?
Yes, the physical office is at 1301 East 6th Avenue, Helena, MT 59620.

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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, Business Services Division or any Secretary of State office. You may file directly with the Montana Secretary of State, Business Services Division. 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, Business Services Division 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.