How to Start an LLC in Montana (2026)
Montana makes LLC formation straightforward and affordable. You'll file everything online through the Secretary of State's portal, and your annual reports cost $0 to file each year.
In This Article
What You'll Learn in This Guide
This guide walks you through every step to legally form a Limited Liability Company (LLC) in Montana — from picking a name to staying compliant year after year. We've kept it practical, current, and free of unnecessary fluff.
Note
Montana LLC formation costs $35 in state fees. Most founders complete the process in 5-6 business days, either DIY or through a formation service starting at $0.
Montana LLC: Quick Facts
Last Verified: Feb 2026- Filing Fee (Online)
- $35
- Processing Time
- 5-6 business days
- Expedited Available
- No
- Annual Report
- April 15 each year
- State Income Tax
- Yes
- Sales Tax Rate
- 0%
- Filed With
- Montana Secretary of State
- Last Verified
- February 21, 2026
What Makes a Montana LLC Different
A Montana LLC creates a legal barrier between your personal assets and your business obligations. If someone sues your LLC or it takes on debt, your personal bank accounts, home, and car are generally protected. That separation only works if you treat the LLC as its own entity, which is why the steps below matter.
Montana stands out for a few reasons. There's no state sales tax, which simplifies things considerably if you sell products. Annual reports are due every April 15 and cost nothing to file. The state also doesn't require a general business license at the state level, though your city or county might.
The entire process happens online. Montana's Secretary of State doesn't accept paper filings for LLC formation, so you'll work through their business portal from start to finish. Most founders can complete the formation in a single sitting, then wait for approval before moving on to the federal steps like getting an EIN.
Choose a Name for Your Montana LLC
Your LLC name must be unique in Montana and follow specific state naming rules. You can reserve a name for up to 120 days if you're not ready to file right away.
Your LLC name needs to be distinguishable from every other business registered in Montana. You can check availability using the Secretary of State's free business search tool at biz.sosmt.gov/search/business. If your ideal name is available but you're not ready to file yet, you can reserve it for 120 days for a $10 fee.
Search available names →Montana LLC Naming Rules
Name Reservation (Optional)
- Search name availability at biz.sosmt.gov/search/business
- File a name reservation online for $10
- Reservation lasts 120 days, giving you time to prepare your filing
State Specific
Montana allows name reservations for 120 days at just $10, which is longer than most states offer.
Pro Tip
Search the Montana business name database before you get attached to a name. If it's taken, you'll need a new one.
Choose a Registered Agent in Montana
Montana requires every LLC to have a registered agent with a physical street address in the state. This person or company receives legal documents on your behalf.
A registered agent is the person or company designated to receive legal notices, tax documents, and official correspondence for your LLC. In Montana, your registered agent must be either an individual who lives in the state or a business entity authorized to operate here. They need a physical street address in Montana. P.O. Boxes don't qualify.
Your Three Options
- Be your own registered agent (free, but your address becomes public record and you must be available during business hours)
- Ask a trusted person in Montana (they must agree to accept documents at their physical address)
- Hire a professional registered agent service (typically $50-$300 per year, adds privacy and reliability)
State Specific
Montana does not allow P.O. Boxes for registered agent addresses. Your agent must have a physical street address in the state.
Pro Tip
If you work from home and don't want your home address on public record, a professional registered agent service keeps your personal address private.
File Your Articles of Organization with Montana
This is the official step that creates your LLC. Montana requires all filings to go through the Secretary of State's online portal.
To form your Montana LLC, you'll file your Articles of Organization for Domestic Limited Liability Company through the Secretary of State's online portal at biz.sosmt.gov. There's no option to file by mail. Create an account on the portal, fill in your LLC name, registered agent information, principal office address, and management structure (member-managed or manager-managed). Review everything carefully before submitting.
Information You'll Need to File
- Your LLC's legal name
- Registered agent's name and physical Montana address
- Principal office address
- Whether your LLC is member-managed or manager-managed
- Name and address of the organizer (the person filing)
- Payment method for the filing fee
Once your filing is approved, you'll receive confirmation through the portal. Keep a copy of your approved articles of organization with your business records. If you need faster turnaround, expedited processing is available and typically delivers a decision within 24 hours.
State Specific
Montana does not accept paper filings for LLC formation. Everything must be submitted through the online business portal.
Pro Tip
Expedited processing is available for an additional fee and brings your turnaround down to about 24 hours.
Recommended: ZenBusiness
Beginner-friendly LLC formation with transparent pricing and a free starter option. From $0 + state fees.
Get an EIN from the IRS
An EIN is a federal tax ID number for your LLC. You'll need it to open a bank account, hire employees, and file taxes.
Apply for your EIN directly on the IRS website at no cost. The online application takes about 10 minutes, and you'll receive your EIN immediately upon completion. You'll need your approved articles of organization first, since the IRS will ask for your LLC's legal name and formation date.
Apply for your EIN on IRS.gov →Create an Operating Agreement for Your Montana LLC
An operating agreement defines how your LLC is owned and managed. Montana doesn't require one by law, but operating without one is a real risk to your liability protection.
Montana does not legally require an operating agreement, but skipping this step is a mistake. Without one, your LLC defaults to Montana's LLC statutes for any disputes about ownership, profits, or management. Those defaults may not match what you actually want. Banks may also ask to see your operating agreement when you open a business account.
Key Sections to Include
Pro Tip
Even single-member LLCs benefit from an operating agreement. It strengthens the legal separation between you and your business, which is the whole point of having an LLC.
Open a Business Bank Account
A separate business bank account keeps your personal finances out of your LLC's affairs, which is essential for maintaining your liability protection.
Opening a dedicated business bank account is one of the most important things you can do after forming your LLC. It creates a clear financial boundary between you and your business. This separation is what makes your limited liability protection actually hold up if it's ever tested. Most Montana banks and credit unions offer business checking accounts, so shop around for one with low fees and features that fit your needs.
What to Bring to the Bank
- Approved articles of organization from the Montana Secretary of State
- Your EIN confirmation letter from the IRS
- Your operating agreement
- A government-issued photo ID for all members who will have account access
- An initial deposit (amount varies by bank)
Important
Mixing personal and business funds can undermine your LLC's liability protection. Courts may "pierce the corporate veil" if you treat your LLC's money as your own, exposing your personal assets to business debts.
Top 3 LLC Formation Services
We've independently reviewed the top LLC formation services in Montana. Here's how they compare.
| Feature | ZenBusiness Best Overall Value | Northwest Registered Agent Best Privacy | Tailor Brands Best for Branding |
|---|---|---|---|
| Starting Price | $0 + state fees | $39 + state fees | $0 + state fees |
| Formation Speed | 1-10 business days | Same-day filing | 2-14 business days |
| Support | Phone, Chat, Email | Lifetime Corporate Guides | Phone, Chat, Email |
| States Covered | 50 states | 50 states | 50 states |
| In Business Since | 2015 | 1998 | 2014 |
| Get Started → | Get Started → | Get Started → |
Frequently Asked Questions
What to Do Next
Once your Montana LLC is approved, take these steps to set your business up for success.
Get an EIN
Apply for free in about 10 minutes at IRS.gov — required before opening a bank account or hiring anyone.
Open a Business Bank Account
Keep personal and business finances separate from day one. Bring your EIN, Articles of Organization, and a government ID.
Create an Operating Agreement
Even if Montana does not require one, an operating agreement protects your liability shield and defines how the LLC is managed.
File Your Annual Report
Set a calendar reminder now. Missing your Annual Report deadline can result in late fees or administrative dissolution.
Ready To File?
Start your Montana LLC with ZenBusiness — guided filing and compliance support included.
About the Author
Legal & Compliance Analyst
Daniel grew up in the shadow of Silicon Valley but chose the legal route over engineering, working as a paralegal for a corporate law firm specializing in mergers and acquisitions. He realized that early-stage founders were constantly making catastrophic legal mistakes because they couldn't afford a $500/hour attorney, prompting his move to B2B media.
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