LLC service ratings · Montana
3 Best LLC Services in Montana (2026)
1. Mainstay Filing: best for formation, agent and annual report on a single line
$199 a year plus the state fee, $234 due at checkout
Mainstay Filing is rated first: $199 a year includes the formation filing, the registered agent and the annual report; renewal is $199.
Mainstay files the annual report at each renewal. The state's line is $20 every year, due April 15, with $15 added if late, and Mainstay passes that fee on at cost.
On three-year sums Mainstay is $200 above Montana Registered Agent.co; the wider coverage justifies that gap in the rating.
What you get
- The formation, prepared and filed for you
- A registered agent all year
- Annual report prepared and filed
- EIN application
Pros
- EIN application is in the package
- Montana's fee goes through at cost
- One $199 yearly line that includes the annual report
- $199 on renewal with no extras
Trade-offs
- Agent renews $100 a year above Montana Registered Agent.co
2. Montana Registered Agent.co: best for a Montana LLC that will not expand
$199 to form, $99 a year for the agent, state fee extra
Montana Registered Agent.co is rated second: Montana formation at $199 beyond the state's amount, first agent year included, then $99 a year for the agent.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
The annual report sits outside its published prices; you file it with Montana yourself every year.
What you get
- LLC filing done for you
- Registered agent service for year one
Pros
- The first registered agent year is covered
- Formation line of $199, plus the state's fee
- Then $99 yearly for the agent
Trade-offs
- The annual report is not on its price list
- EIN application billed at $99
3. Registered Agent MT.org: best for staying local in Montana
$199 to form, $99 a year for the agent, state fee extra
Registered Agent MT.org is rated third: Montana formation at $199 beyond the state's amount, first agent year included, then $99 a year for the agent.
The plan lists an in-state street address as the registered office and scans papers served there into your account.
The annual report sits outside its published prices; you file it with Montana yourself every year.
Registered Agent MT.org copies Montana Registered Agent.co on amounts and plan features, so there is little between them.
What you get
- LLC filing done for you
- A year of registered agent service at the start
Pros
- $199 to form, state fee on top
- The first registered agent year is covered
- Year-two agent amount: $99
Trade-offs
- The annual report is not on its price list
- EIN application billed at $99
The 3 ratings summarized
| Line | Service | Rating | Service fee | Year two | Best for | Open |
|---|---|---|---|---|---|---|
| 1 | Mainstay Filing | 9.4 | $199 | $199/yr | Formation, agent and annual report on one line | Visit Mainstay FilingPartner link. We may earn money if you buy. |
| 2 | Montana Registered Agent.co | 8.9 | $199 | $99/yr | A Montana-only LLC counting every dollar | Visit Montana Registered Agent.coPartner link. We may earn money if you buy. |
| 3 | Registered Agent MT.org | 8.7 | $199 | $99/yr | A Montana-only LLC counting every dollar | Visit Registered Agent MT.orgPartner link. We may earn money if you buy. |
Montana LLC service amounts for 2026: year one, renewal and three-year sum
| Service | Year one | Year two | Year three | Three-year sum | Annual report filed by them |
|---|---|---|---|---|---|
| Mainstay Filing | $199 | $199 | $199 | $597 | Yes |
| Montana Registered Agent.co | $199 | $99 | $99 | $397 | No |
| Registered Agent MT.org | $199 | $99 | $99 | $397 | No |
Reasoning behind the order
The rating method counts cost over years one to three and inclusions per price at 27% each and splits 46% among renewal price and terms, fit with state rules and price clarity. For Montana, inclusions per price was the deciding line.
Montana requires a report annually at $20, with $15 added for a late one. Mainstay's amount covers that filing while Montana Registered Agent.co's does not, so coverage outweighed Montana Registered Agent.co's lower three-year sum.
Each criterion and its weight is listed on How we rank.
Montana LLC formation: official amount and form
Filing the Articles of Organization costs $35, paid to the Montana Secretary of State. Each service here passes that amount through at cost, added to its own.
Ongoing items for a Montana LLC
Plan on the annual report every year; the date is April 15. State amount: $20. Late: $15 extra. Every LLC must name a registered agent with an in-state street address.
Montana LLC service: your questions
What are the total costs to form an LLC in Montana?
$35 to the state plus $199 to the service.
What is the formation document called?
It is the Articles of Organization, lodged with the Montana Secretary of State.
Is a registered agent a requirement for a Montana LLC?
Yes. Montana wants a registered agent on file at all times, with a physical street address in the state.
Which filings recur each year for a Montana LLC?
One line item: the annual report, every year, due April 15, fee $20.
Is the EIN application a separate charge?
Mainstay Filing includes it in the yearly price. Montana Registered Agent.co and Registered Agent MT.org charge $99 separately. At the IRS the EIN itself costs nothing.
Which LLC service holds the top rating in Montana?
Mainstay Filing, as the Montana formation, the registered agent and the annual report are bundled into $199 a year.
Source lines
- Montana Secretary of State fee page and fee sheet: standard annual report fee (ledger date October 2026)
- Montana yearly filing: Annual report: fee, official source (ledger date October 2026)
- Montana yearly filing: Annual report: fee, official source (ledger date October 2026)
- Montana report due date (ledger date August 2026)
- Mont. Code Ann. § 35-8-201 (ledger date August 2026)
- Montana formation fee: Filing fee, official source (ledger date October 2026)
- Montana registered agent statute (ledger date October 2026)
- Mainstay Filing, Montana service page: amounts read November 12, 2026
- Montana Registered Agent.co, pricing and service pages: amounts read November 12, 2026
- Registered Agent MT.org, pricing and service pages: amounts read November 12, 2026