| What to file | Annual report |
|---|---|
| State fee | Annual report (fee waived if filed by April 15): $0 (every year) source ↗ |
| Due | File the annual report between January 1 and April 15 each year. The usual $20 fee is waived for 2026 and 2027 reports filed on time; filing after April 15 costs $35. |
| First deadline after forming | File the annual report between January 1 and April 15 each year. The usual $20 fee is waived for 2026 and 2027 reports filed on time; filing after April 15 costs $35. Your exact first due date is on your LLC's state record; check with the state. |
| Late fee | $15Grace: None. |
| If you don't file | Involuntary dissolution for not filing (reinstatement $35 + $35 per delinquent year). |
Government fees only. Report fees, taxes and late fees shown here are paid to the state, not platform or service fees.
Covers LLCs. Corporations file on different rules and fees; check with the state. Official rules: sosmt.gov ↗ · law.cornell.edu. FormCost isn't affiliated with or endorsed by any government agency. Links go to official public pages.
How to file
File online on biz.sosmt.gov: look up your LLC, confirm or update its details (addresses, registered agent, managers or members) and pay the fee. It usually takes a few minutes, and you don't need a service.
File with Montana ↗Official site: biz.sosmt.gov. No service needed.
BOI report: not needed for US-formed LLCs. Under FinCEN's final rule, effective August 14, 2026 (making the March 2025 interim rule permanent), companies formed in the US don't file beneficial ownership (BOI) reports. Only companies formed abroad and registered to do business in a US state report, generally within 30 days of their registration taking effect. Filing with FinCEN is free; ignore letters asking you to pay to file one. FinCEN ↗
Montana LLC cost and yearly fees → What to do after you form All states
Montana annual report FAQ
Does a Montana LLC have to file an annual report?
Yes: an annual report, $0, due Jan 1–Apr 15.
When is the Montana LLC annual report due?
File the annual report between January 1 and April 15 each year. The usual $20 fee is waived for 2026 and 2027 reports filed on time; filing after April 15 costs $35. First one: file the annual report between January 1 and April 15 each year. The usual $20 fee is waived for 2026 and 2027 reports filed on time; filing after April 15 costs $35. Your exact first due date is on your LLC's state record; check with the state.
How much does the Montana annual report cost?
Annual report (fee waived if filed by April 15): $0 (every year).
What happens if I file the Montana annual report late?
Late fee: $15. Involuntary dissolution for not filing (reinstatement $35 + $35 per delinquent year).
Does my Montana LLC need to file a BOI report?
No, if it was formed in the US. Under FinCEN’s final rule, effective August 14, 2026, US-formed companies are exempt. Only companies formed abroad and registered to do business in a US state report, generally within 30 days of registering.
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