Independent comparison of registered agent services for Montana LLCs and corporations.
Reviewed against Montana Secretary of State guidance · Updated 2026-04-30
The Montana registered agent decision matters more than most LLC owners expect — the agent’s address is the public-record contact for the entity, and Mont. Code §35-8-105 ties continued good standing to the agent’s continuous availability. We ranked four services on price, privacy, and reliability for Montana businesses. The four providers we evaluated for Montana in 2026 are ranked below by overall value.
In Montana, the registered agent’s job is heavier than the statutory floor implies. Montana’s $20 annual report is due April 15 every year, and Montana is one of the states with no state-level sales tax — making it a popular but legally complicated formation choice for out-of-state vehicle and luxury-asset registrations. The practical reason this matters when picking a provider: the April 15 annual report and Montana’s role as a no-sales-tax formation jurisdiction — both create unique service-of-process risk profiles.
For Montana businesses, the three traits that separate good providers from passable ones are (1) reliable same-day handling of service of process from Montana state and federal courts, (2) accurate, deadline-aware reminders calibrated to Montana’s specific annual cycle (annually by April 15), and (3) an online dashboard that shows scanned mail within hours, not days. All four services we ranked clear the Mont. Code §35-8-105 eligibility bar; the meaningful differences are in execution. Northwest leans privacy-first, Mainstay Filing leans value-first, ZenBusiness leans formation-bundle-first, and LegalZoom leans brand-and-phone-support-first.
The Montana-specific filings that hinge on having a reliable registered agent:
Across all of these dates, the registered agent is the routing point for Montana Secretary of State mail, state tax notices, and service of process. A reliable provider turns the Montana compliance calendar into a passive maintenance task; an unreliable one turns it into a recurring fire drill.
Physical-address-only operations; mail forwarding; same-day filing.
Best balance of price and features for most businesses. Includes mail forwarding, online dashboard, and same-day filing at half the cost of premium providers.
Pairs RA with LLC formation packages; useful if forming a new entity from scratch.
Largest brand; phone-based support; bundled legal services beyond RA.
Montana-specific option: Montana Registered Agent.co operates exclusively in Montana and specializes in same-state filings. Best for businesses that want a state-focused provider with local-only operations.
| Filing | Cost | Renewal |
|---|---|---|
| LLC formation | $35 | annually by April 15 |
| Annual Report | $20 | annually by April 15 |
| DBA / Fictitious Name | $20 | Every 5 years |
| Change of Registered Agent | $15 | — |
Source: Montana Secretary of State · Statute reference Mont. Code §35-8-105
For most Montana LLCs, Northwest Registered Agent ranks first on privacy and reliability. Mainstay Filing earns the Editor's Choice for value at $99/year with the same core features. State-specific options like Montana Registered Agent.co specialize in same-state filings.
Commercial services range $50–$250 per year. Mainstay Filing is $99/yr; Northwest is $125/yr; ZenBusiness is $199/yr; LegalZoom is $249/yr.
Yes. File a Statement of Change of Registered Agent with the Montana Secretary of State for $15. Most commercial services handle the change paperwork for you.
National services like Mainstay Filing and Northwest operate across all 50 states with consistent pricing and online dashboards. State-specific providers (like Montana Registered Agent.co) focus exclusively on one state and often handle same-state-only filings faster.
Yes — under Mont. Code §35-8-105, every Montana LLC must designate and maintain a registered agent with a physical street address in Montana.
Yes — if you are a Montana resident with a physical street address in Montana and are available during normal business hours to accept service of process. Most commercial services exist because keeping a personal address on the public record is a privacy concern.
Same-day with every service in the table above. The provider issues a confirmation letter you include with the Articles of Organization filed with the Montana Secretary of State.
RA Ratings independently reviews registered agent services. We may earn a commission from sponsored links; this does not affect rankings or editorial selection. Verify all filing fees with the Montana Secretary of State before submitting paperwork.