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Researched and written by the Launchwise Review editorial team
Launchwise Review

Rankings of registered agents, LLC formation and foreign registration services in all 50 states.

Launch guide · Montana · registered agent

3 Best Registered Agents in Montana (2026)

Researched and written by the Launchwise Review editorial team
For a 2026 launch in Montana, Launchwise Review grades registered agents this way: Mainstay Filing ($149 a year), Montana Registered Agent.co ($99 a year) and Registered Agent MT.org ($99 a year). Mainstay Filing earns the top grade here: $149 a year, still $149 at renewal, and papers served on the company are scanned the same business day at no charge.
1
Top pick on this page

1. Mainstay Filing: best for all fifty states

$149 a year, flat

Our mark 9.1 out of 10

Top grade, Mainstay Filing: one agent plan at $149 a year that works in every state, renewing at $149.

Launching a new company? The $199 yearly package also takes care of the Montana filing and the annual report.

It runs $150 above Montana Registered Agent.co across three years; the extra paperwork it handles is worth that to us.

In the price

  • An in-state street address on the public record
  • Same-business-day scans of legal papers served on the company, free
  • Free scanning for three government mailings a year
  • Compliance reminders

Pros

  • Works for LLCs, corporations, LPs, LLPs and nonprofits
  • $149 a year and it does not rise
  • Papers served on the company are scanned the same business day, free
  • Your first three government letters each year are scanned free

Less good

  • The agent plan alone costs $50 a year more than Montana Registered Agent.co
  • Without the formation package, you file the annual report yourself
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing launch review
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Lower renewal than Mainstay

2. Montana Registered Agent.co: best for the smallest annual bill we rank here

$99 a year, flat

Our mark 8.8 out of 10

Next up is Montana Registered Agent.co: $99 a year, with no jump at renewal, the lowest yearly price on this list.

Montana Registered Agent.co handles the registered office with a state street address and scans whatever is served there for you.

In the price

  • The in-state address the state asks for
  • Whatever is served on the company is scanned into your account

Pros

  • Also forms LLCs, first agent year free
  • You pay $99 a year, renewals included
  • A lower yearly price than Mainstay Filing

Less good

  • You still file the annual report
  • Made for Montana; other states need their own agent
Visit Montana Registered Agent.coPartner link. We may earn money if you buy.
Read the Montana Registered Agent.co launch review
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Montana specialist

3. Registered Agent MT.org: best for Montana specialists

$99 a year, flat

Our mark 8.5 out of 10

Rounding out the list is Registered Agent MT.org: $99 a year, with no jump at renewal, the lowest yearly price on this list.

With Registered Agent MT.org, the registered office sits at a real in-state address and served papers show up in your account as scans.

Their posted prices and features match, so Montana Registered Agent.co and Registered Agent MT.org grade as a near tie.

In the price

  • A registered office address inside the state
  • Served documents are scanned so you can read them online

Pros

  • $99 annually with no renewal bump
  • Formation comes with a free agent year one
  • A lower yearly price than Mainstay Filing

Less good

  • You still file the annual report
  • Made for Montana; other states need their own agent
Visit Registered Agent MT.orgPartner link. We may earn money if you buy.
Read the Registered Agent MT.org launch review

The 3 grades at a glance

Place Company Launch grade Per year At renewal Best fit Go
1 Mainstay Filing 9.1 $149 $149/yr An agent for every state you may enter Visit Mainstay FilingPartner link. We may earn money if you buy.
2 Montana Registered Agent.co 8.8 $99 $99/yr The lowest yearly price among the picks we rank here Visit Montana Registered Agent.coPartner link. We may earn money if you buy.
3 Registered Agent MT.org 8.5 $99 $99/yr The lowest yearly price among the picks we rank here Visit Registered Agent MT.orgPartner link. We may earn money if you buy.
Launchwise Review assigns every grade out of 10 itself using the criteria on How we rank; no customer ratings go into it.

Montana registered agent cost in 2026: first year, renewals, three-year total

Company Year 1 Year 2 Year 3 Three years, total Renewal price matches
Mainstay Filing $149 $149 $149 $447 Yes
Montana Registered Agent.co $99 $99 $99 $297 Yes
Registered Agent MT.org $99 $99 $99 $297 Yes
Prices were copied from each company's own pages on November 12, 2026. Montana's own fees do not change with your choice of agent.

How we graded this list

At Launchwise Review, cost to launch and stay and launch paperwork handled each count for 26% of a grade, and renewal behavior, state match and price transparency split the remaining 48%. In Montana, launch paperwork handled made the call.

Mainstay's plan covers more ground: papers served on the company are scanned the same business day at no charge, the price is the same in all fifty states, and three government letters a year are scanned free. Montana Registered Agent.co costs less, and the grades are close.

Every criterion and weight is listed on How we rank.

Montana registered agent rules, straight from Montana 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. Law behind it: Mont. Code Ann. § 35-7-105.

Montana annual report: date and fee

Put the annual report on your Montana calendar every year. Count on a $20 state charge, with the deadline at April 15. Miss it and $15 gets added. Your registered agent receives the state's notices about it.

Quick answers about Montana registered agents

Do I have to line up a registered agent before launching a Montana LLC?

Yes. Put a registered agent with a physical Montana address on the paperwork, because the state will not accept an LLC without one.

What should I budget each year for a Montana registered agent?

Expect $99 to $149 a year, and each company keeps its price at renewal.

Could I just serve as my own registered agent?

Often yes, if you meet the state's conditions. A commercial registered agent listed with the Secretary of State, or a noncommercial agent: an individual, including an owner, or an entity in Montana.

When does the Montana annual report come due?

Put April 15 on your calendar. The state asks $20, and a late filing adds $15.

Which registered agents are graded on this page?

Mainstay Filing ($149 a year), Montana Registered Agent.co ($99 a year) and Registered Agent MT.org ($99 a year), top grade first.

Which Montana registered agent should a new company pick first?

Mainstay Filing, because the price stays $149 a year if you stay put or expand, and your first three government letters each year are scanned free.

Related pages

Sources and dates

  1. Montana Secretary of State fee page and fee sheet: standard annual report fee, dated October 2026
  2. Montana yearly filing: Annual report: fee, official source, dated October 2026
  3. Montana yearly filing: Annual report: fee, official source, dated October 2026
  4. Montana report due date, dated August 2026
  5. Mont. Code Ann. § 35-8-201, dated August 2026
  6. Montana formation fee: Filing fee, official source, dated October 2026
  7. Montana registered agent statute, dated October 2026
  8. From Mainstay Filing: Montana service page, copied November 12, 2026
  9. From Montana Registered Agent.co: pricing and service pages, copied November 12, 2026
  10. From Registered Agent MT.org: pricing and service pages, copied November 12, 2026