The essentials · Montana
3 Best Registered Agents in Montana (2026): Simply Ranked
The short version
- Must an LLC name one?
- Yes, it is required
- Title in law
- Registered agent
- Typical price
- $99 to $149 a year
- Ranked first
- Registered Agent MT.org, Mainstay Filing then Montana Registered Agent.co
Ranked in Montana
The order follows five checks. Three-year cost comes first, then what the price covers. See method.1. Registered Agent MT.org: best for one-state companies
$99 a year, then $99
Registered Agent MT.org ranks first in Montana. Three years in Montana cost $297 with this agent.
Its three-year total is under Mainstay Filing's, which puts it first for a company that stays put.
Includes
- A local address
- Scans of legal papers
Good
- A lower yearly bill than the national pick
- Annual price $99, renewal price $99
Against
- A second state needs a second agent
- Leaves the annual report on your desk
2. Mainstay Filing: best for a company that may grow
$149 a year, then $149
Mainstay Filing takes second place because there is one rate, $149 a year, wherever the LLC registers.
Registered Agent MT.org is $150 less over three years. That decides the order.
Includes
- A street address in the state
- Three government mailings a year scanned free
- Serves LLCs, corporations, LPs, LLPs and nonprofits
Good
- Usable wherever you register
- Just $149 a year
Against
- Costs $50 more a year than the local pick
- Agent only. No report filing
3. Montana Registered Agent.co: best for keeping it local
$99 a year, then $99
Montana Registered Agent.co ranks third. Three years in Montana cost $297 with this agent.
Its prices match Registered Agent MT.org exactly. The order between them is close.
Includes
- A local address
- Scans of legal papers
Good
- Annual price $99, renewal price $99
- A lower yearly bill than the national pick
Against
- A second state needs a second agent
- Leaves the annual report on your desk
Prices
| # | Name | Year one | Renewal | Total | Includes | |
|---|---|---|---|---|---|---|
| 1 | Registered Agent MT.org | $99 | $99/yr | $297 | A local address; scans of legal papers | Go to Registered Agent MT.orgPartner link. We may earn money if you buy. |
| 2 | Mainstay Filing | $149 | $149/yr | $447 | A street address in the state; three government mailings a year scanned free; Serves LLCs, corporations, LPs, LLPs and nonprofits | Go to Mainstay FilingPartner link. We may earn money if you buy. |
| 3 | Montana Registered Agent.co | $99 | $99/yr | $297 | A local address; scans of legal papers | Go to Montana Registered Agent.coPartner link. We may earn money if you buy. |
The facts
Is a registered agent required?
Every LLC must name a registered agent with an in-state street address.
Law: Mont. Code Ann. § 35-7-105. mca.legmt.gov as of October 2026, our only source here
Who may be the agent?
A commercial registered agent listed with the Secretary of State, or a noncommercial agent: an individual, including an owner, or an entity in Montana.
A qualifying owner can serve for free.
What does an agent cost?
Our picks charge $99 to $149 a year. Three years cost $297 to $447.
Whichever agent you name, the state's fees stay the same.
Why does the state want one?
Legal papers and state notices go to the agent's address in Montana.
Ask how fast the agent tells you when something arrives. Service of process, defined
What does the state bill yearly?
The annual report comes each year and costs $20. In the state's words the filing is due April 15. Note it early.
sosmt.gov as of October 2026, our only source here
Why this order?
Registered Agent MT.org scores best on three-year cost, which is 38% of the score.
Two checks carry most of the weight: three-year cost (38%) and work included (27%).
Mainstay Filing runs $150 higher over three years than Registered Agent MT.org's $297.
Montana agent rules, sourced
| Item | Detail | Confirm |
|---|---|---|
| Fee to form | $35 | sosmt.gov as of October 2026, our only source here |
| Registered agent | Yes, it is required | mca.legmt.gov as of October 2026, our only source here |
| Annual report | $20 every year | sosmt.gov as of October 2026, our only source here |
| State fees, three years | $75 | Sum of the rows above |
Also asked
Can I be my own agent?
Usually. Check who qualifies and which address counts.
Which addresses count?
The address has to be an actual street address or rural route box number in Montana. A P.O. box alone is not enough.
What do the picks cost over three years?
Across three years: Registered Agent MT.org at $297, Mainstay Filing at $447, Montana Registered Agent.co at $297
Where do the figures come from?
Official Montana sources for the state side. Published prices for the service side.
Does the law require one?
Not required. The state takes filings from owners.
Which ranks first in Montana?
Registered Agent MT.org ranks first. An LLC that stays in Montana pays $99 a year and $99 on renewal. After it, Mainstay Filing and Montana Registered Agent.co.
Sources
- Charter Simple keeps Montana Secretary of State fee on file from sosmt.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Montana yearly filing: Annual report on file from sosmt.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Montana yearly filing: Annual report on file from sosmt.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Montana report due date on file from mca.legmt.gov, confirmed August 2026, and nothing more
- Charter Simple keeps Mont on file from mca.legmt.gov, confirmed August 2026, and nothing more
- Charter Simple keeps Montana formation fee: Filing fee on file from sosmt.gov, confirmed October 2026, and nothing more
- Charter Simple keeps Montana registered agent statute on file from mca.legmt.gov, confirmed October 2026, and nothing more
- Registered Agent MT.org pricing page, read November 13, 2026
- Mainstay Filing Montana service page, read November 13, 2026
- Montana Registered Agent.co pricing page, read November 13, 2026