3 Best Foreign Registration Services in Montana (2026): Prices Tracked
The best-value foreign registration services for Montana in 2026 are Mainstay Filing ($199), Montana Registered Agent.co ($199) and Registered Agent MT.org ($199), ranked in that order. The registration fee in Montana is $70 for everyone. Service charges come to $397 to $497 over three years.
Tracked by the Filing Price Watch editorial team
Ordered by:
Best value first, using our five measures
Montana price snapshot
Fee paid to the state$70mca.legmt.gov (pulled October 2026, noted here)
First-year price range$199Provider charges only
Three-year spread$397 to $497Year one and both renewals
Government charges over 3 years$70Same whichever service you use
Cost lines meet inDoes not happenNo service overtakes another
Ranked picks
Service prices only. The $70 state fee applies to every service.
#Ordered byPrice in year 1Price at renewalThree-year spend
1
Top pick
1. Mainstay Filing: best for registering over and over
Starts at $199; later years $149
Price in year 1$199
Price after year 1$149/yr
Three-year spend$497
First on the watchlist is Mainstay Filing. Registration in Montana for $199 plus state fees, with the first agent year paid.
Spend $100 more than at Montana Registered Agent.co across three years and the repeating filings are no longer yours.
Agent renewal in any state: $149 per year.
Price covers
Foreign registration of the LLC
Registered agent is free in year one
The same fee in every state
Holds up
Agent service for the first year is included
$199 on top of the state's fee
The fee does not change by state
Weak spots
Montana Registered Agent.co charges $50 less for the agent
2
One-state service
2. Montana Registered Agent.co: best for a low-cost registration
Starts at $199; later years $99
Price in year 1$199
Price after year 1$99/yr
Three-year spend$397
Montana Registered Agent.co takes spot 2 because it charges $199 to register and covers a year of agent service, then $99 a year.
Price covers
Registration sent to the state office
A year of agent service to begin with
Holds up
$99 a year for the agent after that
Agent service free in year one
Starts at $199
Weak spots
A second provider is needed at home
3
One-state service
3. Registered Agent MT.org: best for a nearby provider
Starts at $199; later years $99
Price in year 1$199
Price after year 1$99/yr
Three-year spend$397
Registered Agent MT.org takes spot 3 because it charges $199 to register and covers a year of agent service, then $99 a year.
Price for price, it matches Montana Registered Agent.co.
Three years of state charges means one filing, two reports and any minimum tax. We list open-ended costs such as publication but keep them out of the total.
Notes on the ranking
Mainstay Filing wins on filings covered by the price, a 29% measure, with Montana Registered Agent.co close behind.
Many states for one price beat Montana Registered Agent.co's lower renewal.
Montana foreign LLC registration fee and rules, as written by the state
An LLC from another state has to register in Montana before doing business here. You file the Application for Certificate of Authority (foreign limited liability company) with the Montana Secretary of State, Business Services and pay $70.
An unregistered LLC risks its own lawsuits being barred in Montana (MCA 35-8-1002(1)); a further charge per day of $5.
Quoted: mca.legmt.gov (pulled October 2026, noted here)
What it costs without a service
No service means three years of state fees at $70. Hiring one adds $397 to $497 in the same period.
Questions and answers
How much does it cost to register a foreign LLC with Montana?
$70 for the filing itself, plus $199 if you pay a service for year one.
What do these services cost over three years?
Three years of service run $397 to $497.
What form registers the LLC?
The registration is Application for Certificate of Authority (foreign limited liability company), filed with the Montana Secretary of State, Business Services.
What recurring filing comes after registration?
It is the annual report, and it has no fee.
In what year does one service become pricier than another?
The order stays the same for ten years.
Which foreign registration service is the best value for Montana?
Mainstay Filing is first, with Montana Registered Agent.co and Registered Agent MT.org after it.