Montana Registered Agent Guide (2026): Rules, Fees and the 3 Best Agents
In 2026 we'd hire Mainstay Filing ($149 a year), Registered Agent MT.org ($99 a year) and Montana Registered Agent.co ($99 a year) for registered agent service in Montana, in that order. Montana requires a registered agent for every LLC. Yearly state fees run $20, which ranks 18th of 50.
Montana registered agent requirements (official, Secretary of State)
Every LLC must name a registered agent with an in-state street address. The address has to be an actual street address or rural route box number in Montana. A P.O. box alone is not enough.
Who may act as 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. Source: Mont. Code Ann. § 35-7-105.
Recurring Montana fees
Your registered agent receives the state's notices about the annual report, which costs $20 every year and is due April 15.
What decided the order
State filings covered is worth 30% of the score, and it put Mainstay Filing ahead of Registered Agent MT.org here.
Registered Agent MT.org is the cheaper agent; coverage across states scored higher.
Montana questions answered
Does Montana require a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
Who can serve as the registered 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.
How much does a registered agent cost in Montana?
The agents we'd use charge $99 to $149 a year.
What does the LLC pay the state each year?
$20 a year on our measure: the annual report ($20 every year).
Which registered agents are on this page?
Mainstay Filing ($149 a year), Registered Agent MT.org ($99 a year) and Montana Registered Agent.co ($99 a year), ranked in that order.
Which registered agent would you pick?
Our order is Mainstay Filing, Registered Agent MT.org and Montana Registered Agent.co. For Mainstay Filing: $149 a year with the same price at renewal, and the plan works in all fifty states.