How to Start an LLC in Mississippi: Step-by-step

Formation is only the first step. You'll also want to create an operating agreement, get an EIN, register for any applicable Mississippi taxes, open a separate business bank account, and stay on top of the state's annual report deadline. This guide walks through the process in order, including what to do after approval and how to keep your LLC in good standing.

Key Takeaways

• You form a Mississippi LLC by filing a Certificate of Formation online through BOSS and paying the $50 state filing fee.
• Every Mississippi LLC must have a registered agent with a physical street address in the state.
• Mississippi domestic LLCs must file an annual report by April 15 each year, but there's no filing fee for domestic LLC annual reports.
• An operating agreement isn't required by Mississippi law, but it helps clarify ownership, management, finances, and member responsibilities.
• After approval, most LLCs should get an EIN, open a separate business bank account, register for applicable taxes, and keep formation and ownership records organized.

Why Form an LLC in Mississippi?

Mississippi is one of the more affordable states for LLC formation. The state filing fee is $50, domestic LLCs don't pay a fee to file their annual report, and the formation process is handled online through BOSS.

An LLC can also give business owners a more formal structure without the administrative complexity of a corporation. For many small business owners, freelancers, and side-business operators, that balance of liability protection, tax flexibility, and manageable compliance makes an LLC a practical choice.

Inc Authority can help simplify the filing step by preparing and submitting your Mississippi LLC formation for free. You still pay the required state fee, but you don't pay an additional Inc Authority filing-service fee.

How to Form an LLC in Mississippi: Step-by-step Overview

To form a Mississippi LLC, you file a Certificate of Formation with the Mississippi Secretary of State and pay the $50 state filing fee. All filings go through BOSS (Business Online Services System) at business.sos.ms.gov. Once the Secretary of State approves your Certificate, your LLC legally exists.

Step 1: Choose a Name for Your Mississippi LLC

Before you file, make sure your Mississippi LLC name meets the state’s naming rules and is available in the Secretary of State’s records. A compliant name needs the right LLC designator, must be distinguishable from existing business names, and can’t include certain restricted words without proper approval. Here’s what you should know.

• Required designator. Your name must include "Limited Liability Company" or the abbreviation "LLC" or "L.L.C." The Mississippi Secretary of State will reject a Certificate of Formation that omits the designator.
• Distinguishability. Your LLC's name must be distinguishable from other business entities organized, reserved, or registered with the Mississippi Secretary of State. Adding filler words such as "the," "a," "an," "and," "&," "of," or "or" won't create distinguishability. Neither will swapping one entity designator for another.
• Name availability search. The Mississippi Secretary of State provides a free business entity search tool at sos.ms.gov. Run your proposed name through the search before you invest time in the rest of the filing.
• Name reservation. If you aren't ready to form your LLC yet, Mississippi lets you reserve an available business name by filing a name reservation application and paying the required fee. If you're ready to file your Certificate of Formation now, you can usually skip this step because your name is secured once your LLC filing is approved. Check the current Mississippi Secretary of State instructions before relying on a reservation period or fee.
• Restricted and prohibited words. Your LLC name can't contain the words "bank," "banker," "bankers," "banking," "trust company," "insurance," "trust," "corporation," "incorporated," or any combination or abbreviation of those terms. Your name also can't imply affiliation with a government agency. Terms such as "engineer," "architect," or "attorney" may require prior approval from a separate state licensing board. When in doubt, call the Mississippi Secretary of State's Business Services Division before filing.

Step 2: Appoint a Mississippi Registered Agent

Every Mississippi LLC must maintain a registered agent. That's a person or business entity designated to receive legal documents, government notices, and service of process on the LLC's behalf.

Mississippi requirements.

• The agent can be an individual Mississippi resident or a domestic or foreign business entity authorized to do business in the state, and must have a physical street address in Mississippi.
• The agent must be available during normal business hours.
• P.O. Boxes aren't permitted.
• Mississippi doesn't require a separate written consent form. The registered agent's name and address go directly on the Certificate of Formation.

DIY vs. registered agent service.

• Serve as your own agent. You can list yourself if you have a Mississippi street address and can be present during business hours. The trade-off: your home address will be publicly listed on the Certificate of Formation.
• Use a professional registered agent service. These typically charge $50-$300 annually and provide privacy, reliability, and compliance reminders.
• Designate a trusted individual. A Mississippi resident who meets the address and availability requirements can also serve.

If your work takes you out of state often, or if you run a home-based business and prefer not to publish your home address in a state database, a registered agent service is worth the annual cost.

Step 3: File the Mississippi Certificate of Formation Through BOSS

The Certificate of Formation is the document that legally creates your LLC in Mississippi. File online with BOSS at business.sos.ms.gov. You'll need to create an account before you can submit.

Have the following ready before you open the form.

• LLC name (with the required designator, exactly as you want it on file)
• Registered agent name and Mississippi street address
• Organizer name and address
• Management structure: member-managed or manager-managed
• Future effective date, if you want the LLC to come into existence on a date other than the filing date (must be within 90 days of submission)
• NAICS code for your primary industry. If you don't know yours, use the free lookup tool at census.gov/naics.

The filing fee is $50, paid by credit or debit card at submission.

Processing time. The Mississippi Secretary of State typically processes online filings within 1-2 business days. Mississippi doesn't offer expedited processing. The office is open Monday through Friday, 8:00 a.m. to 5:00 p.m. Central Time.

Once approved, the Secretary of State issues a stamped Certificate of Formation. Download and save it right away. You'll need it to open a business bank account, register for state taxes, and apply for business licenses.

Step 4: Create a Mississippi LLC Operating Agreement

Mississippi doesn't legally require an operating agreement, but every LLC should have one.

For a single-member LLC, an operating agreement helps document the separation between you and the business. That can be useful when opening a bank account, keeping records, and showing that your LLC is being treated as a separate legal entity.

For a multi-member LLC, a written agreement prevents costly disputes over ownership, management decisions, and financial distributions. It should cover profit distribution percentages, voting rights, member exits and transfers, and dissolution procedures.

Without an operating agreement, Mississippi's default LLC statutes fill in the gaps. Those defaults may not match what you intended.

Step 5: Get a Federal EIN for Your Mississippi LLC

An EIN (Employer Identification Number) is a nine-digit federal tax ID number issued by the IRS. Think of it as a Social Security number for your business. Without one, you may be unable to hire employees or open a business bank account.

Single-member LLCs with no employees aren't strictly required to have an EIN for federal tax purposes. But most banks require it to open a business checking account, and you'll need it to register for Mississippi state taxes.

Applying is free. Go to IRS.gov, search "EIN application," and complete the online form. You'll receive your EIN right away.

Don't apply until Mississippi has approved your Certificate of Formation. Waiting the extra day or two protects you from having a federal tax ID tied to an LLC the state never approved. For additional federal guidance, see Register your business with the U.S. Small Business Administration.

Step 6: Register for Mississippi State Taxes

Registering for taxes is a separate step from filing your Certificate of Formation. It's handled by the Mississippi Department of Revenue. Register for taxes online through TAP (Taxpayer Access Point) at dor.ms.gov.

Which taxes apply depends on what your business does. You may need to pay these taxes.

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• Sales tax. If your LLC sells taxable goods or services in Mississippi, you may need to register for sales tax before making taxable sales.
• Withholding tax. LLCs with employees generally need to register for Mississippi income tax withholding.
• Pass-through income. By default, a single-member LLC is taxed as a disregarded entity and a multi-member LLC as a partnership. In both cases, business profits generally pass through to the owners' personal tax returns unless the LLC elects another federal tax status.
• Other tax obligations. Your tax requirements may vary based on your industry, location, employees, and whether you operate in more than one state.

Because tax rates and rules can change, confirm your current obligations with the Mississippi Department of Revenue or a tax professional before filing.

Once TAP registration is complete, open a dedicated business bank account. Keeping personal and business finances separate helps preserve clean records and reinforces the separation between you and the LLC. Most banks require your EIN and stamped Certificate of Formation to open a business checking account.

What to Do After Your Mississippi LLC Is Approved

Once your Certificate of Formation is approved, your LLC exists. The next step is getting it ready to operate cleanly.

Start by downloading and saving your stamped Certificate of Formation. Keep it with your operating agreement, EIN confirmation letter, tax registration records, and any licenses or permits your business needs.

Then open a dedicated business bank account. Keeping business and personal money separate makes bookkeeping easier and supports the legal separation between you and the company.

You should also check whether your city, county, profession, or industry requires any additional licenses, permits, or registrations. Mississippi doesn't have one universal business license that applies to every LLC, but your business may still need local or industry-specific approvals.

Finally, set a recurring reminder for your annual report. Mississippi domestic LLCs don't pay a fee to file the annual report, but they still have to file it by the April 15 deadline.

Records Mississippi LLCs Should Keep

Good recordkeeping helps your LLC stay organized, respond to bank or tax questions, and show that the company is being treated as a separate business.

Keep copies of:

• Your stamped Certificate of Formation
• Your operating agreement
• EIN confirmation letter
• Annual reports
• Tax registrations and filings
• Business licenses or permits
• Member and manager records
• Major contracts, resolutions, and financial records

You don't need to file these internal records with the Mississippi Secretary of State unless a specific form or update is required. Keep them somewhere secure and easy to access.

What Does it Cost to Start and Maintain a Mississippi LLC?

The minimum cost to start a Mississippi LLC is $50. Your total spend depends on whether you use a registered agent service, whether you reserve your name, and what ongoing compliance costs look like year over year.

Verify all fee amounts against the Mississippi Secretary of State's current fee schedule at sos.ms.gov before filing.

The $50 Certificate of Formation fee is the only mandatory cost to form your LLC. There's no monthly or annual fee just to keep your Mississippi LLC's legal existence intact.

Mississippi domestic LLCs pay nothing to file their annual report. Free doesn't mean optional, though. Miss the April 15 deadline and you risk far more than a fee.

Registered agent service is the main recurring cost for many LLCs. Professional services often range from $50 to $300 per year. If you serve as your own registered agent, your direct cost is $0, but you take on the responsibility of being available during business hours and keeping your registered address current.

Form your Mississippi LLC yourself and serve as your own registered agent, and your total out-of-pocket cost to start can be as low as $50. Add a registered agent service, and your first-year cost usually runs higher. Mississippi is still one of the more affordable states to form an LLC, with no annual report fee for domestic filers and a flat $50 formation fee. If you use Inc Authority's free LLC filing service, you pay only the required Mississippi state fee for formation support. For a full breakdown of LLC costs by state, see our dedicated guide.

How Long Does it Take to Form an LLC in Mississippi?

The Mississippi Secretary of State typically processes online filings within 1-2 business days. Mississippi accepts only online filings through BOSS, no paper option, which removes mail delay from the equation. Mississippi doesn't offer expedited processing, so plan your filing accordingly if you're working toward a specific launch date.

The Secretary of State's office is open Monday through Friday, 8:00 a.m. to 5:00 p.m. Central Time. A filing submitted Friday afternoon won't begin processing until Monday.

Your LLC exists on the date the Mississippi Secretary of State accepts and processes your Certificate, not the date you click "submit." If you need your LLC to come into existence on a specific future date, you can request a delayed effective date in your Certificate of Formation. That date must fall within 90 days of submission.

Mississippi LLC Annual Report and Ongoing Compliance Requirements

Once your Mississippi LLC is active, staying in good standing comes down to one core recurring filing each year: the annual report. Miss the deadline and your LLC may face administrative dissolution.

The Annual Report: What it is and When It's Due

Mississippi law requires all LLCs operating in Mississippi to file an annual report with the Secretary of State. It's a formal confirmation that your business information is current and accurate.

You can file any time on or after January 1st, and it's due by April 15th. Filing early means one less deadline hanging over tax season.

Mississippi doesn't require a separate initial report. Your first annual report is due in the calendar year following formation. An entity formed in December 2025 owes its first report by April 15, 2026.

Cost to file: $0 for domestic Mississippi LLCs. Free doesn't mean optional, though. Skipping the filing can create avoidable compliance problems.

How to File the Annual Report

Annual report rules require you to file through your BOSS account at business.sos.ms.gov. After logging in, choose the appropriate option under "Business Filings" and enter your Mississippi business ID number. The report will be pre-populated with your existing information. Review it, update anything that has changed, and submit.

What the Annual Report Requires

Required fields include:

• The entity's legal name and Mississippi Business ID number
• Principal office address
• Current registered agent information
• A brief description of the nature of business, including NAICS code
• Information on the entity's governing persons (managers or members)

You must file even if none of this information has changed. Submit a report with missing required information and you'll get a notice from the Secretary of State. You'll then have 30 days to make corrections before the report is considered late.

What Happens If You Miss the April 15 Deadline

Mississippi imposes no separate monetary late fee, but the procedural consequences are significant. LLCs face administrative dissolution for failing to file a required annual report under Miss. Code Ann. § 79-29-821. Before issuing a certificate of dissolution, the Secretary of State must serve written notice and provide at least a 60-day window to cure.

Practical timeline:

• April 15: Annual report deadline
• After April 15: Secretary of State may initiate administrative dissolution proceedings
• After written notice is served: LLC receives at least 60 days under Miss. Code Ann. § 79-29-823 to correct the deficiency

Administrative dissolution can create legal and operational problems. Your business may lose good standing, your business name may become available to others, and you may run into problems with contracts, banking, licensing, or lawsuits. If you receive a dissolution notice, file the missing report and respond within the cure window. Your registered agent's reliability matters here because they're the one receiving that notice.

Reinstating a Mississippi LLC After Administrative Dissolution

Under Miss. Code Ann. § 79-29-825, an administratively dissolved LLC may apply for reinstatement at any time after dissolution. There's no deadline, as long as all pending obligations are satisfied.

To reinstate through BOSS:

1. File all outstanding annual reports
2. Obtain a tax clearance letter through the Mississippi Department of Revenue's TAP portal at dor.ms.gov
3. Submit the reinstatement application through BOSS and pay the $50 reinstatement fee

One major risk during dissolution: the state doesn't protect your company name. Another entity can claim it while your LLC is dissolved. Reinstatement could then require a new LLC name, a problem easily avoided by filing on time.

Updating Your Registered Agent

If your registered agent changes, file a Certificate of Change through BOSS. The fee is $10 for domestic LLCs. Don't let this go unfiled. If the Secretary of State sends a dissolution notice to an outdated address, you may never see it. The cure window ticks away regardless.

Your Mississippi LLC Annual Compliance Checklist

• File your annual report through BOSS between January 1 and April 15 (no fee for domestic LLCs)
• Confirm your registered agent information is current; update via Certificate of Change if anything has changed ($10)
• Stay current on state taxes with the Mississippi Department of Revenue
• Keep your business bank account separate from personal finances

Mississippi's annual compliance requirements are manageable: one online filing per year, no fee for domestic LLCs, and a clear reinstatement path if something slips. Set a calendar reminder for January and treat the April 15 deadline the same way you treat your personal tax return.

Mississippi LLC FAQs

How Much Does it Cost to Set up an LLC in Mississippi?

The minimum cost is $50. Optional name reservation adds $25. A professional registered agent service adds $50-$300 annually. Mississippi domestic LLCs pay no fee to file their annual report.

At What Income Level Does a Mississippi LLC Make Financial Sense?

There's no income threshold. The decision turns on liability exposure, not revenue. Mississippi LLCs are taxed as pass-through entities by default. A freelancer with $30,000 in revenue who holds contracts or equipment may benefit just as much as a business earning ten times that.

What is the Downside of Starting an LLC in Mississippi?

The downsides are administrative, not financial. You'll pay the $50 formation fee upfront, file an annual report every year by April 15, and maintain a registered agent with a physical Mississippi address. Single-member owners also pay self-employment tax on pass-through income. Mississippi's annual report carries no filing fee for domestic LLCs, so the compliance burden is manageable once it's built into your routine.

Can I Be My Own Registered Agent for a Mississippi LLC?

Yes, if you have a physical Mississippi street address and are available during normal business hours. Your address becomes public record on the Certificate of Formation. If you run a home-based business or travel often, a professional registered agent service is worth the annual cost.

Do I Need an Operating Agreement for My Mississippi LLC?

Mississippi doesn't legally require one, but every LLC should have one. Without it, Mississippi's default LLC statutes fill in the gaps on profit splits, voting rights, and member exits. Those defaults may not match your intentions. For single-member LLCs, an operating agreement also strengthens the legal separation between you and the business.

What is a Certificate of Formation in Mississippi?

The Certificate of Formation is the official document that legally creates your Mississippi LLC. Start your business by filing it with the Mississippi Secretary of State through BOSS at business.sos.ms.gov. It requires your LLC name, registered agent name and address, organizer information, and management structure. The $50 filing fee is paid at submission. Once approved, the Secretary of State issues a stamped Certificate that serves as your proof of formation.

Can an Out-of-State LLC Register to Do Business in Mississippi?

Yes. An LLC formed in another state can register as a foreign LLC if it needs authority to do business in Mississippi. Foreign LLCs usually file through the Mississippi Secretary of State and must maintain a Mississippi registered agent. Because the filing requirements and fees are different from domestic LLC formation, check the current Secretary of State instructions before applying.

Does Inc Authority Really File Mississippi LLCs for Free?

Inc Authority offers free LLC filing service, which means you don't pay Inc Authority a filing-service fee to prepare and submit your Mississippi LLC formation. You still pay the required Mississippi state filing fee and any optional add-ons or state fees that apply. Inc Authority also offers customer support if you have questions during the formation process.