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What forming an LLC costs by state / Montana

3 Best LLC Services in Montana (2026): What You Pay

If you are budgeting for LLC formation services in Montana this 2026, start with Mainstay Filing ($199), Montana Registered Agent.co ($199) and Registered Agent MT.org ($199), in that order. Budget $397 to $597 for services over three years, plus the $35 that Montana charges to file.
Written by the Price Your LLC editorial team

↓ Ranked for you by: What you spend over three years counts 38%, and how much work the price takes off you counts 31%. Renewal change, break-even and price visibility make up the rest. How we rank

What to expect

What the state charges you to form $35 sosmt.gov (we looked on October 2026, so you can too)
Opening cost range $199 What the service charges
Three-year range $397 to $597 Opening year plus two more
State total, years 1 to 3 $75 Same whoever you hire
Prices swap in Never Stable for a decade

Montana: your options, best value first

Ranked by how we rank. The $35 state fee is not folded into any option.

1
Best value for you

1. Mainstay Filing: best for never filing the annual report yourself

$199 a year, and you pay the state $35
You pay in year 1 $199
You pay after year 1 $199/yr
You pay over 3 years $597

Mainstay Filing comes first because one $199 price takes care of formation, registered agent service and every annual report.

Montana Registered Agent.co costs $200 less by year three; the 31% weight on work covered still puts this one first.

You never file the annual report; Montana's $20 is passed along at cost.

Your price covers

  • Formation paperwork, completed
  • Registered agent for the whole year
  • Annual report, filed on time
  • EIN application prepared for you
  • State fee billed as published

What you get

  • Renewal stays at $199
  • One yearly price of $199
  • The EIN application is taken care of

What to watch

  • From year two, $100 above Montana Registered Agent.co
2
Local option

2. Montana Registered Agent.co: best for the smallest opening bill

$199 plus the state's fee, then $99 yearly
You pay in year 1 $199
You pay after year 1 $99/yr
You pay over 3 years $397

Montana Registered Agent.co ranks second. $199 for year one, then $99 for every year after.

The annual report is not covered by this price.

Your price covers

  • Formation handled for you
  • Agent service for your first year

What you get

  • Agent service at no cost in year one
  • $199 to form
  • Then $99 a year

What to watch

  • Annual report is not part of what you pay for
  • EIN application not included ($99)
3
Local option

3. Registered Agent MT.org: best for owners who prepare their own reports

$199 plus the state's fee, then $99 yearly
You pay in year 1 $199
You pay after year 1 $99/yr
You pay over 3 years $397

Registered Agent MT.org ranks third. $199 for year one, then $99 for every year after.

The annual report is not covered by this price.

Year-one and renewal prices both equal Montana Registered Agent.co's.

Your price covers

  • Formation handled for you
  • Agent service for your first year

What you get

  • $199 to form
  • Agent service at no cost in year one
  • Then $99 a year

What to watch

  • Annual report is not part of what you pay for
  • EIN application not included ($99)

Year-by-year totals

Pick Service You pay in year 1 You pay by year 2 You pay by year 3 You pay by year 5
1 Mainstay Filing $199 $398 $597 $995 Price out Mainstay Filing Partner link. We may earn money if you buy.
2 Montana Registered Agent.co $199 $298 $397 $595 Price out Montana Registered Agent.co Partner link. We may earn money if you buy.
3 Registered Agent MT.org $199 $298 $397 $595 Price out Registered Agent MT.org Partner link. We may earn money if you buy.

Prices as published November 13, 2026; you pay year one first, then each renewal is added. The order of totals stays put for ten years.

Cost calculator

Not sure how long you will keep the company? Try a few timelines below, with the EIN application as an extra.

3 years of fees add up to Mainstay Filing $597, Montana Registered Agent.co $397, Registered Agent MT.org $397. Your smallest total: Montana Registered Agent.co.

The government side of your Montana budget

What you pay for Amount Source
Cost to form $35 sosmt.gov (we looked on October 2026, so you can too)
Annual report $20 every year sosmt.gov (we looked on October 2026, so you can too)
Cost of missing the deadline $15 sosmt.gov (we looked on October 2026, so you can too)
Three-year state total $75 Filing, reports and any tax

To find what you owe the state across three years, add the filing fee, two later reports and any minimum tax. We mention open-ended costs without putting a number on them.

How the ranking came out

Mainstay Filing wins upkeep the price covers, worth 31%, with Montana Registered Agent.co close behind.

Taking over the annual report moved the bundle to first.

Need the EIN application? Then the bills cross in year 2, as Mainstay Filing moves past Montana Registered Agent.co.

What Montana charges you to form an LLC and what it requires

The Montana Secretary of State takes $35 plus the Articles of Organization, under Mont. Code Ann. § 35-8-201. Every LLC must name a registered agent with an in-state street address.

In the state's words: sosmt.gov (we looked on October 2026, so you can too)

Filing it yourself

$75 in state fees is the least three years can cost you. Services add $397 to $597 above that.

About these prices

How much will an LLC formation service cost me in Montana?

Budget $199 plus $35 in state fees.

What will these services cost me over three years?

Anywhere from $397 to $597 for three years of service.

How much will Montana charge me to file an LLC?

$35 to the state, and the form is the Articles of Organization.

What will Montana charge me each year after formation?

Once your LLC exists, Montana will bill you for the annual report each year at $20, April 15.

Will the EIN application be part of the price?

Mainstay Filing adds nothing, Montana Registered Agent.co adds $99 and Registered Agent MT.org adds $99.

When does one service end up costing more than another?

Not within ten years: the order of the totals stays the same.

Which LLC formation service is the best value for me in Montana?

By our five factors the Montana order is Mainstay Filing, Montana Registered Agent.co and Registered Agent MT.org, led by Mainstay Filing on upkeep the price covers.

See also

What forming an LLC costs by state for all 50 states Best LLC services for anyone How we rank your options

Where we looked

  1. For Montana Secretary of State fee, open sosmt.gov (read October 2026).
  2. For Montana yearly filing: Annual report, open sosmt.gov (read October 2026).
  3. For Montana yearly filing: Annual report, open sosmt.gov (read October 2026).
  4. For Montana report due date, open mca.legmt.gov (read August 2026).
  5. For Mont, open mca.legmt.gov (read August 2026).
  6. For Montana formation fee: Filing fee, open sosmt.gov (read October 2026).
  7. For Montana registered agent statute, open mca.legmt.gov (read October 2026).
  8. On November 13, 2026 the Mainstay Filing Montana service page page said this
  9. On November 13, 2026 the Montana Registered Agent.co pricing page page said this
  10. On November 13, 2026 the Registered Agent MT.org pricing page page said this