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Filing Price Watch A running watch on what LLC paperwork costs.

Registered agent watchlists / Montana

3 Best Registered Agents in Montana (2026): Prices Tracked

Montana watchlist, 2026: Registered Agent MT.org ($99/yr), Mainstay Filing ($149/yr) and Montana Registered Agent.co ($99/yr) lead the registered agents, best value first. Pay $99 to $149 to start, and $297 to $447 once three years are in.
Tracked by the Filing Price Watch editorial team

Ordered by: Best value first, using our five measures

Prices on the watchlist

Is it mandatory? Yes mca.legmt.gov (pulled October 2026, noted here)
Year 1 spread $99 to $149 Charged each year
Three-year spend $297 to $447 First year plus two renewals
Annual report $20 a year sosmt.gov (pulled October 2026, noted here)
Switch point Does not happen Stable for a decade

What Montana services charge

Ordered by our tracking method. State fees do not depend on the agent.

1
Top pick

1. Registered Agent MT.org: best for the smallest yearly bill

$99 for year one, then $99 at renewal

Price in year 1 $99
Price at renewal $99/yr
Three-year spend $297

In Montana, Registered Agent MT.org is the best value because $99 a year with a street address in the state on file.

It costs less over three years than Mainstay Filing, and three-year cost is 37% of the order.

Price covers

  • A local registered office
  • Legal documents posted in your account

Holds up

  • A steady $99 a year
  • Undercuts Mainstay Filing every year

Weak spots

  • Another state means another agent
  • Does not cover the annual report
Go to Registered Agent MT.org Partner link. We may earn money if you buy.
2
Most covered

2. Mainstay Filing: best for one agent for all fifty states

$149 for year one, then $149 at renewal

Price in year 1 $149
Price at renewal $149/yr
Three-year spend $447

Mainstay Filing places second. A flat $149 each year, no matter which state applies.

By year three it trails Registered Agent MT.org by $150.

Price covers

  • A real address in the state
  • Up to three government mailings a year scanned for you at no charge
  • Covers LLCs, corporations, LPs, LLPs and nonprofits

Holds up

  • Reach across fifty states
  • $149 every year

Weak spots

  • Registered Agent MT.org costs $50 less every year
  • Report filing needs the formation package
Go to Mainstay Filing Partner link. We may earn money if you buy.
3
One-state service

3. Montana Registered Agent.co: best for a local backup

$99 for year one, then $99 at renewal

Price in year 1 $99
Price at renewal $99/yr
Three-year spend $297

Spot 3 goes to Montana Registered Agent.co: $99 a year with a street address in the state on file.

Registered Agent MT.org lists exactly the same prices.

Price covers

  • A local registered office
  • Legal documents posted in your account

Holds up

  • A steady $99 a year
  • Undercuts Mainstay Filing every year

Weak spots

  • Another state means another agent
  • Does not cover the annual report
Go to Montana Registered Agent.co Partner link. We may earn money if you buy.

Running totals at 1, 2, 3 and 5 years

Place Service After year 1 After year 2 After year 3 After year 5
1 Registered Agent MT.org $99 $198 $297 $495
Go to Registered Agent MT.org Partner link. We may earn money if you buy.
2 Mainstay Filing $149 $298 $447 $745
Go to Mainstay Filing Partner link. We may earn money if you buy.
3 Montana Registered Agent.co $99 $198 $297 $495
Go to Montana Registered Agent.co Partner link. We may earn money if you buy.

Prices pulled November 13, 2026; each column adds another renewal. None of the totals cross in ten years.

Pick your own number of years

Set a number of years and the calculator adds the first year to each renewal.
Spend for 3 years: Registered Agent MT.org $297, Mainstay Filing $447, Montana Registered Agent.co $297. Smallest bill: Registered Agent MT.org.

Official fees and where they come from

Item Amount Source
Filing to create the LLC $35 sosmt.gov (pulled October 2026, noted here)
Annual report $20 every year sosmt.gov (pulled October 2026, noted here)
Penalty for a late report $15 sosmt.gov (pulled October 2026, noted here)
State side, 3 years $75 Added from the lines above

Each line above links to the state's own page. Summing them gives the three-year state figure, which covers filing, years two and three of reporting and a minimum tax where there is one.

Why this order for Montana

The 37% measure tracked three-year cost separated the top two.

Registered Agent MT.org lands at $297 in the three-year column, $150 lower than Mainstay Filing.

Montana registered agent requirements, as written by the state (Montana Secretary of State)

Every LLC must name a registered agent with an in-state street address.

A commercial registered agent listed with the Secretary of State, or a noncommercial agent: an individual, including an owner, or an entity in Montana. See Mont. Code Ann. § 35-7-105.

The address has to be an actual street address or rural route box number in Montana. A P.O. box alone is not enough.

From the source: mca.legmt.gov (pulled October 2026, noted here)

State fees and nothing else

Owners who are eligible pay nothing extra to skip a service. The prices above, $99 to $149 a year, buy back your time.

About these prices

How much does a Montana registered agent cost per year?

About $99 to $149 per year.

What do three years of agent service cost?

By year three these services have cost $297 to $447.

Is a registered agent required for a Montana LLC?

Yes, it does. Every LLC must name a registered agent with an in-state street address.

Can the owner serve as the registered agent?

If you qualify, yes; the requirements section has the rules.

What does the state charge the LLC each year?

Once the LLC exists, Montana expects the annual report each year, at $20, April 15.

In what year does one service become pricier than another?

The order stays the same for ten years.

Which registered agent is the best value in Montana?

Registered Agent MT.org is first, with Mainstay Filing and Montana Registered Agent.co after it.

Keep watching

Source trail

  1. Backing for Montana Secretary of State fee is sosmt.gov, dated October 2026.
  2. Backing for Montana yearly filing: Annual report is sosmt.gov, dated October 2026.
  3. Backing for Montana yearly filing: Annual report is sosmt.gov, dated October 2026.
  4. Backing for Montana report due date is mca.legmt.gov, dated August 2026.
  5. Backing for Mont is mca.legmt.gov, dated August 2026.
  6. Backing for Montana formation fee: Filing fee is sosmt.gov, dated October 2026.
  7. Backing for Montana registered agent statute is mca.legmt.gov, dated October 2026.
  8. Seen on November 13, 2026: pricing page at Registered Agent MT.org
  9. Seen on November 13, 2026: Montana service page at Mainstay Filing
  10. Seen on November 13, 2026: pricing page at Montana Registered Agent.co