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Filing Verdict

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

Registered agent verdict · Montana

3 Best Registered Agents in Montana (2026)

Filing Verdict's 2026 verdict on registered agents in Montana: Mainstay Filing ($149 a year), Registered Agent MT.org ($99 a year) and Montana Registered Agent.co ($99 a year), in that order. Mainstay Filing takes first place: $149 a year, unchanged at renewal, with papers served on the company scanned the same business day at no charge.
The Filing Verdict editorial team
Our top pick
Spot 1

1. Mainstay Filing: best for all fifty states

$149 per year, flat

9.2Editorial score
out of 10

Mainstay Filing wins here: one $149 agent plan that follows the company into every state, renewing at $149.

New company? Mainstay's formation package at $199 a year adds the Montana filing and the annual report.

The three-year bill is $150 higher than Registered Agent MT.org's, and the wider coverage is worth that to us.

What you get

  • A registered office address in any state you need
  • Service of process scanned and uploaded on the day it arrives, at no cost
  • Three government mailings a year scanned at no charge
  • Compliance reminders

What we like

  • $149 a year, unchanged at renewal
  • Same-business-day scans of served papers, free
  • Three government mailings a year scanned free
  • Serves LLCs, corporations, LPs, LLPs and nonprofits

Cons

  • The agent alone runs $50 a year above Registered Agent MT.org
  • You file your own annual report unless you buy the formation package
Visit Mainstay FilingPartner link. We may earn money if you buy. Our full Mainstay Filing verdict
Best for a Montana-only company
Spot 2

2. Registered Agent MT.org: best for the lowest yearly fee on this list

$99 per year, flat

8.9Editorial score
out of 10

Second place goes to Registered Agent MT.org: $99 a year, flat, with served legal papers scanned and sent to you online.

Registered Agent MT.org lists its in-state street address as the company's registered office and posts scans of served papers to your online account.

What you get

  • The in-state street address the state requires
  • Each legal paper served on the company is scanned into your account

What we like

  • Beats Mainstay Filing on yearly price
  • $99 annually, flat at renewal
  • Offers formation with a free first agent year

Cons

  • The annual report filing is yours to handle
  • Built for Montana; other states need a separate agent
Visit Registered Agent MT.orgPartner link. We may earn money if you buy. Our full Registered Agent MT.org verdict
Montana only
Spot 3

3. Montana Registered Agent.co: best for Montana specialists

$99 per year, flat

8.8Editorial score
out of 10

Third place goes to Montana Registered Agent.co: $99 a year, flat, with served legal papers scanned and sent to you online.

Montana Registered Agent.co supplies the registered office street address and scans served legal papers into your account.

Nothing in the published prices or features divides Registered Agent MT.org from Montana Registered Agent.co; pick either.

What you get

  • The in-state street address the state requires
  • Each legal paper served on the company is scanned into your account

What we like

  • Also forms LLCs, with year-one agent service included
  • Beats Mainstay Filing on yearly price
  • Yearly cost of $99, unchanged when it renews

Cons

  • The annual report filing is yours to handle
  • Built for Montana; other states need a separate agent
Visit Montana Registered Agent.coPartner link. We may earn money if you buy. Our full Montana Registered Agent.co verdict

The 3 verdicts at a glance

No.ServiceVerdict scoreYearly priceRenewalBest forVisit
1Mainstay Filing9.2$149$149/yrAn agent that works in all fifty states Visit Mainstay FilingPartner link. We may earn money if you buy.
2Registered Agent MT.org8.9$99$99/yrThe lowest yearly price we rank here Visit Registered Agent MT.orgPartner link. We may earn money if you buy.
3Montana Registered Agent.co8.8$99$99/yrThe lowest yearly price we rank here Visit Montana Registered Agent.coPartner link. We may earn money if you buy.
Scores come from Filing Verdict's editors, out of 10, using the criteria explained on How we rank; they are not customer ratings.

Montana registered agent prices for 2026: year one, renewals and three years

ServiceYear 1Year 2Year 3Total, 3 yearsRenewal price unchanged
Mainstay Filing$149$149$149$447Yes
Registered Agent MT.org$99$99$99$297Yes
Montana Registered Agent.co$99$99$99$297Yes
Prices were read from each company's own pages on November 12, 2026. Montana's fees do not depend on which agent you choose.

How the order was set

Two criteria lead Filing Verdict's method at 35% apiece: total over three years and paperwork the price handles. Renewal behavior, match to the state and up-front pricing share the other 30%, and Montana came down to paperwork the price handles.

Mainstay's agent plan covers more: papers served on the company are scanned the same business day at no fee, one price applies in all fifty states and three government mailings a year are scanned free. Registered Agent MT.org costs less, and the two finish close.

The full list of criteria and weights is on How we rank.

Montana registered agent requirements, from Montana Secretary of State (official)

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. Citation: Mont. Code Ann. § 35-7-105.

Montana annual report: what it costs and when it is due

Every Montana LLC owes the annual report every year. The state fee is $20, due April 15. A late filing adds $15. Notices about it go to your registered agent.

Montana registered agent: questions answered

Must a Montana LLC have a registered agent?

Yes. Montana requires every LLC to keep a registered agent on file, and the agent needs a street address in the state.

What do Montana registered agents charge each year?

The prices run $99 to $149 a year, and every service keeps its price at renewal.

May I act as my own registered agent?

Only 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.

What is the due date for the Montana annual report?

Due April 15; the state fee is $20. Filing late adds $15.

Which registered agents are ranked on this page?

Mainstay Filing ($149 a year), Registered Agent MT.org ($99 a year) and Montana Registered Agent.co ($99 a year), from first place to last.

Which registered agent is the best value in Montana?

Mainstay Filing, because $149 a year whether the company stays put or expands, and the first three government mailings each year are scanned free.

See also

Sources and dates

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