3 Best Registered Agents in Montana (2026): Who to Hire
Our 2026 Montana ranking, best first, is Mainstay Filing ($149 a year), Registered Agent MT.org ($99 a year) and Montana Registered Agent.co ($99 a year). Prices begin at $99 to $149 a year and reach $297 to $447 across three years.
By the LLC Answered editorial team
Answer in four lines
Short reply
Must you name one?
Must be named
Legal title
Registered agent
Price of an agent
$99 to $149 every twelve months
Our picks
Mainstay Filing, Registered Agent MT.org then Montana Registered Agent.co
Our Montana picks, best first
Order set by our five tests: three-year cost first, then what the price covers.
#1Our answer: this one
1. Mainstay Filing: best for owners who plan to grow
Costs $149 a year and renews for $149
Hire Mainstay Filing in Montana: a single account at $149 a year serves whichever state the LLC registers in.
Registered Agent MT.org saves $150 across three years. The trade is coverage outside Montana.
What is bundled
In-state address of record
Scans of three government mailings per year, free
Also serves corporations, LPs, LLPs and nonprofits, not only LLCs
Pluses
Annual price $149, renewal price $149
Goes wherever the company goes
Downsides
Registered Agent MT.org is $50 a year less
Just the agent role
#2Montana choice
2. Registered Agent MT.org: best for LLCs that never leave the state
Costs $99 a year and renews for $99
Why Registered Agent MT.org second? Simply put, one state, $99 a year, $99 once renewed.
What is bundled
A physical in-state address
Scanned copies of legal papers
Pluses
Smaller yearly bill than the national pick
$99 a year, no increase
Downsides
One-state service
The annual report is outside the service
#3Montana choice
3. Montana Registered Agent.co: best for local service
Costs $99 a year and renews for $99
Why Montana Registered Agent.co third? Simply put, one state, $99 a year, $99 once renewed.
Registered Agent MT.org charges the same, which makes this a near tie.
What is bundled
A physical in-state address
Scanned copies of legal papers
Pluses
$99 a year, no increase
Smaller yearly bill than the national pick
Downsides
One-state service
The annual report is outside the service
Compared in a table
#
Who
First year
Renewal
Three-year cost
What is covered
1
Mainstay Filing
$149
$149/yr
$447
In-state address of record; scans of three government mailings per year, free; Also serves corporations, LPs, LLPs and nonprofits, not only LLCs
Prices as of November 13, 2026. The state's own fees are in the checklist below.
The questions, one by one
Can the LLC go without a registered agent?
Every LLC must name a registered agent with an in-state street address.
The rule comes from Mont. Code Ann. § 35-7-105. see mca.legmt.gov, as of October 2026, state page
Who counts as a valid 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.
You may be your own agent when you qualify, and the state adds no charge.
How much should I budget for an agent?
Count on $99 to $149 a year, $297 to $447 over three.
Naming a different agent does not change any state fee.
What does an agent do for an LLC?
When a lawsuit or state letter reaches the LLC in Montana, the agent is the one who receives it.
Every figure above links to its official source; the last line is our own addition of the filing, two reports and any minimum tax, with variable costs such as publication left out.
Also asked
Am I allowed to be my own agent?
In most cases, yes. Check who qualifies and which address counts, then you can do it yourself.
What address does an agent need?
The address has to be an actual street address or rural route box number in Montana. A P.O. box alone is not enough.