Place1
Our top pickRegistered Agent MT.org
1. Registered Agent MT.org: best for the lowest agent price on this list
Annual price $99; renewal price $99
Our mark9.4out of 10
Registered Agent MT.org is number one here: $99 a year, flat, with legal documents scanned and sent to you online.
Its plan gives you an in-state street address for the registered office, and legal documents served on the company are scanned and sent to you online.
Its edge over Mainstay Filing is cost, which carries the most weight in our scoring.
What you get
- In-state street address for the registered office
- Scans of served documents, online
Why pick it
- $99 yearly, same to renew
- Lowest price of the three
- Can form your LLC as well
Less good
- Filing the annual report is not in the price
- No coverage outside Montana
Place2
Best for growing companiesMainstay Filing
2. Mainstay Filing: best for multi-state companies
Annual price $149; renewal price $149
Our mark8.9out of 10
In second place, Mainstay Filing: $149 a year, the same at renewal, with the first three government mailings each year scanned free.
If the company is not formed yet, Mainstay's $199-a-year formation package covers the Montana filing and also files your annual report.
On cost it trails Registered Agent MT.org by $150 over three years.
What you get
- A physical in-state address on the public record
- Service of process scanned the same business day, no fee
- First three government mailings a year scanned free
- Compliance reminders
Why pick it
- Works for LLCs, corporations, LPs, LLPs and nonprofits
- First three government mailings a year scanned free
- Service of process scanned the same business day, no fee
- $149 yearly, no renewal increase
Less good
- Registered Agent MT.org is $50 a year less
- The agent-only plan does not file your annual report
Place3
Montana onlyMontana Registered Agent.co
3. Montana Registered Agent.co: best for a second Montana option
Annual price $99; renewal price $99
Our mark8.8out of 10
Third: Montana Registered Agent.co, for $99 a year, flat, with legal documents scanned and sent to you online.
Its plan gives you an in-state street address for the registered office, and legal documents served on the company are scanned and sent to you online.
With identical published prices, Registered Agent MT.org and Montana Registered Agent.co are separated only narrowly.
What you get
- In-state street address for the registered office
- Scans of served documents, online
Why pick it
- Can form your LLC as well
- Lowest price of the three
- $99 yearly, same to renew
Less good
- Filing the annual report is not in the price
- No coverage outside Montana
The 3 picks side by side
| Rank | Service | Our score | Annual price | Renewal price | Best for | Link |
|---|
| 1 | Registered Agent MT.org | 9.4 | $99 | $99/yr | Lowest yearly price on this list | Visit Registered Agent MT.orgPartner link. We may earn money if you buy. |
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| 2 | Mainstay Filing | 8.9 | $149 | $149/yr | Agent plus fifty-state coverage | Visit Mainstay FilingPartner link. We may earn money if you buy. |
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| 3 | Montana Registered Agent.co | 8.8 | $99 | $99/yr | Lowest yearly price on this list | Visit Montana Registered Agent.coPartner link. We may earn money if you buy. |
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Editorial scores out of 10 from The Founders Review, using the criteria explained on How we rank. No customer ratings are involved.
Annual and renewal prices in Montana, 2026
| Service | Year one | Year two | Year three | Three-year total | Same price at renewal |
|---|
| Registered Agent MT.org | $99 | $99 | $99 | $297 | Yes |
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| Mainstay Filing | $149 | $149 | $149 | $447 | Yes |
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| Montana Registered Agent.co | $99 | $99 | $99 | $297 | Yes |
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Read from each provider's pricing page on November 12, 2026. The state's fees do not change with the agent you choose.
Why Registered Agent MT.org is first
The Founders Review weighs five things, led by three-year cost and what one price covers at 30% each. For Montana, three-year cost is what separated first place from second.
At $297 over three years, Registered Agent MT.org saves $150 against Mainstay Filing. A Montana-only company gains little from coverage elsewhere, so cost won.
Our method page lists all five criteria.
Montana registered agent requirements (official, Montana Secretary of State)
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. Source: Mont. Code Ann. § 35-7-105.
Montana's annual report and your agent
The annual report is due every year (April 15) with a $20 state fee. Miss it and the state adds $15. State notices go to your registered agent's address.
Common Montana questions
Does a Montana LLC need a registered agent?
Yes. Every LLC must name a registered agent with an in-state street address.
How much does a registered agent cost in Montana?
The services we rank charge $99 to $149 a year, and each keeps the same price at renewal.
Can I be my own registered agent?
Possibly; the state sets who qualifies. A commercial registered agent listed with the Secretary of State, or a noncommercial agent: an individual, including an owner, or an entity in Montana.
When is the Montana annual report due?
It is due April 15 and the state fee is $20. Late filings cost $15 more.
Which registered agents do you rank here?
Registered Agent MT.org ($99 a year), Mainstay Filing ($149 a year) and Montana Registered Agent.co ($99 a year), in this order.
Which Montana registered agent is the best value?
On our method, Registered Agent MT.org: a $99 yearly plan built for Montana companies, renewing at $99.