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Biz Formation Report

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

LLC formation report · Montana

3 Best LLC Services in Montana (2026)

By the Biz Formation Report editorial team

Biz Formation Report ranks LLC services in Montana for 2026 as Registered Agent MT.org ($199), Montana Registered Agent.co ($199) and Mainstay Filing ($199), in that order. Registered Agent MT.org earns the top grade: forming in Montana costs $199 beyond the state's fee, with the first agent year included, and keeping the agent runs $99 a year.

No.1

Top pick on this page

1. Registered Agent MT.org: best for a Montana LLC that expects to stay put

Score9.3out of 10
$199 for formation, then $99 a year for the agent, plus the state fee

Top grade, Registered Agent MT.org: $199 for formation on top of the state fee, then $99 a year for the agent.

The plan seats the company at an in-state street address and posts scans of papers served there to your online account.

The annual report is outside its published prices, so you submit it to Montana yourself every year.

Its three-year total is below Mainstay Filing's, a gain in the cost criterion.

What you get

  • Articles prepared and filed
  • Registered agent service for year one

Good

  • $199 for formation, plus the state fee
  • First-year registered agent service is part of the price
  • Then $99 per year for the agent

Weak spots

  • Does not handle the annual report
  • The EIN application costs $99 extra
Visit Registered Agent MT.orgPartner link. We may earn money if you buy.
Read the Registered Agent MT.org review
No.2

Low renewal

2. Montana Registered Agent.co: best for local Montana formation

Score9.0out of 10
$199 for formation, then $99 a year for the agent, plus the state fee

Second grade, Montana Registered Agent.co: $199 for formation on top of the state fee, then $99 a year for the agent.

The plan seats the company at an in-state street address and posts scans of papers served there to your online account.

The annual report is outside its published prices, so you submit it to Montana yourself every year.

Prices and features do not separate Registered Agent MT.org from Montana Registered Agent.co; either works.

What you get

  • Articles prepared and filed
  • Registered agent service for year one

Good

  • $99 annually to keep the agent
  • Formation costs $199 before the state fee
  • First-year registered agent service is part of the price

Weak spots

  • Does not handle the annual report
  • The EIN application costs $99 extra
Visit Montana Registered Agent.coPartner link. We may earn money if you buy.
Read the Montana Registered Agent.co review
No.3

Best all-in yearly price

3. Mainstay Filing: best for formation, agent and annual report on one invoice

Score8.7out of 10
$199 a year plus the state fee, $234 due at checkout

Third grade, Mainstay Filing: the formation filing, the registered agent and the annual report come to $199 a year, renewing at $199.

The renewal covers the annual report, which Mainstay files for you. Montana collects $20 every year, with a deadline of April 15, and a late filing adds $15; Mainstay passes the state's fee through at cost.

Registered Agent MT.org is $200 cheaper across three years, and that difference lowers Mainstay Filing's cost grade.

What you get

  • The LLC formation, done for you
  • Registered agent service all year
  • The annual report prepared and filed
  • The EIN application

Good

  • A single $199 yearly price, including the annual report
  • Renewal is $199 with no add-ons
  • Montana's state fee is passed through at cost
  • Includes the EIN application

Weak spots

  • Its agent renews at $100 a year more than Registered Agent MT.org's
Visit Mainstay FilingPartner link. We may earn money if you buy.
Read the Mainstay Filing review

Summary of the 3 grades

RankProviderGradeService feeYear twoBest fitSite
1Registered Agent MT.org9.3$199$99/yrA Montana-only LLC keeping costs downVisit Registered Agent MT.orgPartner link. We may earn money if you buy.
2Montana Registered Agent.co9.0$199$99/yrA Montana-only LLC keeping costs downVisit Montana Registered Agent.coPartner link. We may earn money if you buy.
3Mainstay Filing8.7$199$199/yrFormation, agent and annual report on one invoiceVisit Mainstay FilingPartner link. We may earn money if you buy.

Each grade out of 10 comes from Biz Formation Report's editors and the weighted criteria on How we rank; no customer ratings are involved.

Montana LLC service prices, 2026: year one, renewal and three-year outlay

ProviderYear 1Year 2Year 3Three-year outlayAnnual report done for you
Registered Agent MT.org$199$99$99$397No
Montana Registered Agent.co$199$99$99$397No
Mainstay Filing$199$199$199$597Yes

All prices were taken from the companies' own websites on November 12, 2026. Montana's $35 filing fee is payable on top of each row and is not part of these totals.

Why Registered Agent MT.org ranks first

Biz Formation Report grades three-year bill and what the money buys at 32% each, leaving 36% for renewal handling, local rules match and pricing openness. In Montana, three-year bill settled the order.

Total outlay with Registered Agent MT.org over three years: $397, $200 less than Mainstay Filing. Mainstay would add the annual report filing, but owners can file it alone for the state fee, so the lower price decided the grade.

Every criterion and weight is listed on How we rank.

Montana LLC filing fee and form, from official sources

The Montana Secretary of State charges $35 for the Articles of Organization. Each provider here adds that fee at cost on top of its own.

What a Montana LLC owes after formation

Expect the annual report every year, with a deadline of April 15. It costs $20. Late filing adds $15. Every LLC must name a registered agent with an in-state street address.

Montana LLC service: common questions

What does Montana charge to start an LLC, all in?

$35 goes to the state and $199 to the service.

Which document starts the LLC?

the Montana Secretary of State accepts the Articles of Organization.

Is a registered agent mandatory for a Montana LLC?

Yes. Montana requires one, with a physical street address in the state, from the day the LLC exists.

What recurring paperwork follows an LLC in Montana?

A single item: the annual report, filed every year (April 15) for $20.

Does the service price cover the EIN?

The Mainstay Filing yearly price covers it. Registered Agent MT.org and Montana Registered Agent.co list it at $99. The IRS does not charge for issuing an EIN.

What is the best LLC service in Montana, by our report?

Registered Agent MT.org: $199 plus the Montana filing fee, year-one registered agent service included, then $99 a year.

Read next

Source notes

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