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To start an LLC in Mississippi, you'll file a certificate of formation with the Mississippi Secretary of State through the BOSS portal. This guide walks through the filing process, key state fees, and the ongoing compliance work, including the annual report needed to keep your LLC in good standing.
Key takeaways
- Mississippi calls the formation document a certificate of formation.
- File through BOSS and pay $50 for a domestic LLC.
- A registered agent needs a physical Mississippi street address and should consent before being listed.
- Employer identification number (EIN), tax, license, and permit requirements depend on the business.
- Domestic annual reports are due between January 1 and April 15 each year and currently have a $0 fee.
Step 1: Choose your Mississippi LLC name
Your name is the first thing the Secretary of State checks, and it's one of the fastest ways to get your filing bounced back. Nail down a compliant, available name before you file so you don't end up paying a second $50 fee.
Search the Secretary of State's business filing system with LegalZoom’s free Mississippi business name search tool to see if your preferred business name is available for use in the state. Try variations of your proposed name and treat any result as preliminary: The Secretary of State reviews distinguishability when you file, and a clean search does not guarantee approval.
Free Mississippi Business Name Check
Starting a business? Use our free name check tool to see if your business name is available according to Mississippi state records.
By clicking "Check Availability," I agree to LegalZoom's Terms of Use. This search is a preliminary check of state databases and does not include variations or trademarks. Results do not guarantee name availability or compliance with legal requirements.
What are Mississippi's LLC naming requirements?
Your name needs "Limited Liability Company," "LLC," or "L.L.C." in it and must be distinguishable under Mississippi's entity-name rules. Do not assume that changing punctuation, adding filler words, switching the designator, or pluralizing a word will make a confusingly similar name acceptable.
Mississippi restricts certain words and names that imply a bank, trust company, insurance company, corporation, or similar regulated or formal entity. If your proposed name uses a restricted term, check the current Secretary of State guidance and any applicable regulator before filing.
Should you reserve your Mississippi LLC name before filing?
It's not required, but a name reservation can be useful if you need time between picking a name and actually filing. You can reserve a name for 180 days by filing a name reservation with a $25 fee. If you're ready to file, skip this step entirely.
Step 2: Appoint a Mississippi registered agent
Every Mississippi LLC needs a registered agent and registered office to receive service of process and official notices. The Secretary of State will not accept a certificate of formation without compliant registered-agent information.
Do you need a registered agent to start an LLC in Mississippi?
Yes, no way around it. Mississippi requires an LLC's certificate of formation to include registered-agent information, and the filing affirms that the agent was notified and consented to serve. Foreign LLCs registering in Mississippi need one too, even if they already have an agent back in their home state.
What are Mississippi's registered agent requirements?
The agent needs a physical Mississippi street address, not simply a P.O. box, and should be available during normal business hours to receive documents in person. If you are appointing a noncommercial registered agent, that person must be at least 18 years old.
How do you choose a registered agent for a Mississippi LLC?
You can choose an eligible individual or an authorized business entity with a physical Mississippi street address. A commercial registered-agent service may be useful if you do not want to use a home address or cannot reliably receive documents during normal business hours. Obtain the agent's permission before listing a noncommercial agent.
If you plan to run your business out of a home office with regular hours, you can serve as your own agent. But, if you travel a lot, keep odd hours, or want your home address off the public record, a commercial registered agent service solves both problems for an annual fee.
Step 3: File your Mississippi certificate of formation
Your LLC is formed when the Secretary of State accepts the certificate of formation through BOSS, unless you select a valid future effective date. Review every current portal field carefully before submitting.
How do you file a certificate of formation for a Mississippi LLC?
The organizer or other authorized signer submits the certificate of formation through BOSS. The domestic filing fee is $50, and payment methods are controlled by the portal and may change, so confirm the available option during filing.
Processing times vary. Current Secretary of State guidance indicates that some online filings may be processed the same day, while staff review can take longer.
Do you need to create an account to file in Mississippi's BOSS portal?
Yes. Go to business.sos.ms.gov, click "Register," and enter the information requested, including a business name and a reliable email address. A verification email or temporary password may follow.
What information do you need before you file in BOSS?
Before you can file, you’ll need the following information.
- LLC name: Use the exact name you have confirmed is available and compliant, including the required designator.
- Registered agent name and physical Mississippi street address: Obtain the agent's consent before listing them, but no separate consent form is filed with the certificate.
- Signer or organizer information: Provide the name, address, and title for the person signing the filing.
- Management structure: Choose member-managed or manager-managed if the BOSS workflow requests it.
- Business activity information: Provide any current activity or NAICS information the BOSS workflow requests.
- Future effective date (optional): Leave it blank for immediate effect or choose a date no more than 90 days after filing.
- BOSS account email: Use an email you monitor for portal notices; distinguish it from the statutory certificate fields.
What becomes public record when you file your Mississippi certificate of formation?
Once approved, anyone can search for public entity information such as status, creation date, principal address, registered-agent information, and filing history. A commercial registered agent can keep that particular address separate from your home address, but it does not make every filing detail private.
Save the filed certificate of formation and payment confirmation. If a bank, lender, or government agency asks for formal proof, order a certified copy or certificate of existence as needed.
Step 4: Create a Mississippi LLC operating agreement
Your certificate of formation gets your LLC recognized by the state, but it says nothing about who owns what, who makes decisions, or what happens when things go sideways. That's what the operating agreement is for.
Does Mississippi require an LLC operating agreement?
No, but Mississippi Code § 79-29-123 makes it clear: If you skip writing your own rules, the state's default statute fills in the blanks for you, and those defaults were never written with your business in mind.
Multi-member LLCs often benefit the most because the agreement can address profit splits, buyouts, voting, and signing authority before a disagreement occurs. Single-member LLCs can use one to document ownership and management practices, organize business records, and show how the business is intended to operate.
Mississippi law recognizes operating agreements and supplies default rules when an agreement is silent, subject to statutory limits. Treat the agreement as a governance document that can reduce uncertainty—not as a guarantee that it will prevent every dispute or preserve liability protection if the business is otherwise operated improperly.
What should a Mississippi LLC operating agreement include?
Your operating agreement should include these key details.
- Ownership percentages: Each member's share and how it connects to profit and loss allocation
- Management structure: Member-managed or manager-managed, plus details the certificate of formation leaves out
- Voting rights: Spell out what needs unanimous consent versus a simple majority
- Capital contributions: What each member put in, and how future funding gets handled
- Profit and loss distribution: How and when the money actually gets paid out
- Transfer and buyout provisions: What happens if someone leaves, sells their stake, dies, or divorces
- Dissolution terms: The process for winding the LLC down
Step 5: Get an EIN and register for Mississippi state taxes
After approval, complete the federal, state, banking, and licensing steps that apply to your LLC. Some are required by the business' activities or tax classification, while others are practical setup steps that help you operate with separate records.
Apply for an employer identification number when the LLC has employees, owes certain federal excise taxes, or otherwise falls within the IRS' EIN requirements. Many single-member LLCs also obtain one for banking, payroll, vendor onboarding, or privacy reasons, but a bank's preference is not the same as a federal legal requirement. Applying after state approval can help the legal name and formation date match your records.
What Mississippi state taxes apply to LLCs?
Mississippi LLC tax treatment generally follows the LLC's federal tax classification. A single-member LLC is usually disregarded for federal income-tax purposes, while a multi-member LLC usually defaults to partnership treatment unless an election is made. Use current Mississippi Department of Revenue guidance for the applicable individual, corporate, or pass-through tax rules rather than relying on an outdated phase-out summary.
Other Mississippi registrations depend on the business. Selling taxable goods or services may require a Department of Revenue sales tax account. Electing corporate tax treatment can create Mississippi corporate income-tax or franchise-tax obligations that do not apply the same way to a default pass-through LLC. Hiring employees may require state withholding and unemployment-related registrations. Confirm the current requirements with DOR and the applicable employer agency.
Since elections and rates change from year to year, most owners bring in a tax professional once they've filed.
Step 6: Complete post-approval Mississippi LLC tasks
These post-approval tasks are not all handled by the Secretary of State, but they are important steps in getting the LLC ready to operate.
What documents do Mississippi banks require to open an LLC account?
The exact requirements will depend on the bank you’re using, but most will ask you for the following:
- Stamped, approved certificate of formation
- EIN confirmation letter from the IRS
- Operating agreement, if you have one (some banks want it to confirm signing authority)
- Government-issued photo ID for anyone with signing authority
Ask the bank which documents it requires, because policies vary.
Do multi-member Mississippi LLCs need extra banking paperwork?
A bank may ask for an LLC resolution naming who can open accounts, sign checks, or take out loans. Some banks accept an operating agreement that already states signing authority, while others use their own forms. Call ahead and confirm the bank's requirements.
How do you get a Mississippi business license?
Mississippi does not have a universal state-level business license for every LLC. Requirements depend on what you sell, where you operate, whether you have employees, and whether your industry is regulated. Check the state, county, city, and professional board requirements that match your business.
- State tax registration with the Department of Revenue (dor.ms.gov) if you're selling taxable goods or services subject to the 7% sales tax
- A local privilege license from your city or county; call your city clerk or county chancery clerk to find out what's required
Regulated professions and industries, such as cosmetology, food service, child care, and others, may need additional state-board or agency licensing. Use Mississippi One Stop, your city or county, and the applicable licensing board to confirm requirements; do not assume the BOSS filing workflow identifies every license. See Mississippi business license requirements for more detail.
Building a business is enough work as it is. We'll help you start your LLC with confidence.
Step 7: File your Mississippi LLC annual report to stay in good standing
Mississippi requires every active LLC to file an annual report, and skipping it puts your business at real risk.
When is the Mississippi LLC annual report due?
The window runs January 1 through April 15 every year, no matter when you formed your LLC. Domestic LLCs pay $0, and foreign LLCs pay $250, both by the same deadline. File online through BOSS.
What happens if you miss Mississippi's annual report deadline?
If you do not file, the Secretary of State can issue notice and later administratively dissolve the LLC under the statutory process. Dissolution can affect the LLC's good-standing status and its ability to maintain an action in court. It does not automatically invalidate every contract or make members personally liable for all company obligations.
How much does it cost to start an LLC in Mississippi?
Every domestic filer pays $50 to submit the certificate of formation online through BOSS. Annual reports for domestic LLCs cost nothing. Your total only climbs if you tack on optional extras like a commercial registered agent or a name reservation.
The risks of filing your Mississippi LLC yourself
Mississippi's filing rules create a few state-specific risks that are easy to miss. Review these points before submitting through BOSS and again when setting up the LLC's ongoing compliance calendar.
- Mississippi name conflicts: Your proposed name may be rejected if it is not distinguishable under Mississippi's entity-name rules or is missing the required LLC designator.
- Mississippi registered agent gaps: Your filing may be delayed if the registered agent lacks a valid physical Mississippi street address, uses a P.O. box, has not consented, or does not meet state eligibility rules.
- Mississippi BOSS field errors: Your filing may be delayed by blank signer, management, registered-agent, or other current portal fields that do not match the filing record.
- Mississippi filing-path mistakes: Don’t use an outdated paper-filing process instead of following current BOSS instructions.
- Mississippi effective-date errors: Selecting a future date more than 90 days after filing or delaying formation unintentionally can affect when the LLC exists.
Before filing, confirm the current BOSS fields and current requirements on the Secretary of State site, then review tax, licensing, and annual-report obligations on the appropriate agency sites.
Start your Mississippi LLC with LegalZoom
Filing yourself through BOSS is doable. But if you're juggling naming, a registered agent, an operating agreement, and tax registration all at once, LegalZoom can help.
- Certificate of formation filing: We handle preparation and submission, with name and agent details checked before filing
- Registered agent service: LegalZoom has a Mississippi-based agent, so your own address doesn't end up on the public record.
- Operating agreement templates: There are options customizable for ownership, management, and dispute resolution.
- EIN acquisition: This is handled once your LLC is approved.
- Compliance and annual report reminders: Alerts are sent ahead of Mississippi's deadline to keep your LLC in good standing.
Ready to file your Mississippi certificate of formation? LegalZoom can handle the paperwork so you can focus on running your business.
Find the right state to form an LLC
Find the right state to form an LLC
Every state has different rules, costs, and considerations for LLC formation.
Mississippi LLC FAQs
What is the filing fee to start an LLC in Mississippi?
$50 for domestic LLCs, paid online through BOSS at the time of filing. Double-check the current amount on sos.ms.gov before you pay, as the fee can change at any time.
What steps are required to start a business in Mississippi?
You need to choose a legal structure, register with the Secretary of State if you're forming an entity, get an EIN, register for applicable state taxes with the Department of Revenue, and lock down any required city or county licenses.
At what income is an LLC worth it?
There's no magic number. Liability protection matters at any revenue level, since a lawsuit or unpaid debt can threaten your personal assets, no matter how much you're making. Many owners weigh formation against Mississippi's pass-through tax treatment and $50 fee as their revenue and risk grow.
Do I pay taxes on LLC income?
Often, but the result depends on the LLC's federal tax classification and the type of income. An LLC selling taxable goods or services may need a Department of Revenue sales-tax account, and an LLC with employees may need employer registrations. Confirm the current requirements with DOR and the applicable agency.
What is the biggest disadvantage of an LLC?
Self-employment tax exposure. Members typically pay Social Security and Medicare tax on their full share of profits, unlike corporate shareholders who can sometimes limit that exposure through salary structuring.
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