South Dakota is one of those states where you can easily start a business. If you plan to start an LLC in South Dakota, it will take a couple of days to process your documents. To form a South Dakota LLC, you must get a legit business name, hire a registered agent, file formation documents, draft an operating agreement, and finally get an EIN. These are the basic and generic steps. Make sure to consult an expert before you dive in!
This article shared all the essential steps to file your LLC in South Dakota. Besides, you will get names of services that are best to launch your business with. Their cost and services are also shared on this page. If you're not a reading type of person, we have a detailed video tutorial on the same! :)
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How to Start an LLC in South DakotaAfter Starting Your South Dakota LLCSouth Dakota Foreign LLCSouth Dakota LLC Formation ReviewF.A.QsHow to Start an LLC in South Dakota
An LLC (aka Limited Liability Company) is a hybrid business entity combining a corporation’s characteristics with a partnership or sole proprietorship. It separates your personal assets from your business assets, thus giving you personal asset protection. For an LLC, members' personal assets are not affected by business debts. However, in some cases, if the LLC is sued for business debts, courts might pierce the corporate veil and use the owner's personal assets to meet their corporate liabilities.
If you wish to start an LLC in South Dakota, you must file your Articles of Organization with the State and pay a filing fee of $150. While it's the most important step, it's not the only one. There are 4 other crucial steps to follow to get your LLC formed in South Dakota. Below are all 5 steps that explain everything you need to do to start a South Dakota LLC in 2026. Let's get started!
Step 0Decide on the Structure and Nature of the Business
Before you start filing your LLC in South Dakota, you must decide on the structure of your LLC (whether it is a Single-member or a Multi-member LLC). A single-member LLC is a business structure where only one individual runs the company. This type of limited liability company (LLC) provides legal protection to its owner and enables them to operate their business while taking advantage of certain tax benefits. In contrast, a traditional multi-member LLC must have at least two members involved in the company’s management and ownership.
For both types of structures, the process of establishing is the same in South Dakota. The tax burden might be different if you chose a different tax structure while filing the Articles of Organization.
LLC vs S-Corp
An LLC is a business structure that has the right to elect any tax structure. Despite having a pass-through tax advantage, many LLCs, for several reasons, elect a different business structure for tax purposes. An S-Corp is one of those business structures that LLCs can elect. The S-Corporation is a type of corporation that is less complicated than a C-Corporation and has vast tax benefits.
With an S-Corp, the LLC can still enjoy a pass-through taxation. However, the federal income tax will be calculated on the basis of the salary of the owner and the return he/she gets on their share of the company. There is no corporate income tax or problem of double taxation in an S-Corp. A single-member or a multi-member LLC can elect an S-Corp tax structure. However, in the case of a multi-member LLC, make sure that the number of members does not exceed 100 to be an S-Corp.
If you have a single-member LLC, electing an S-Corp can save a chunk of tax for you. As a single-member LLC, the owners have to pay about 15.3% self-employment tax. However, if you have an S-Corp tax structure, no SE tax is payable by the LLC. Read more on what tax forms LLCs file.
Step 1Decide on a Name for Your South Dakota LLC
The first step in forming a limited liability company in South Dakota is to give a proper name to your LLC. Before you name your business, you must know that the name should be easy to remember, available in the state, and follow all the LLC naming guidelines.
South Dakota LLC Naming Guidelines
There are a few specific requirements all LLCs in South Dakota must follow while naming their Company. Some of the most important requirements are as follows:
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Your business name should be available, and no other existing business in South Dakota can have the same name.
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"Limited Liability Company", "LLC", and "L.L.C." - any one of these has to be used as a suffix in your business name.
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You cannot use any name for your business that is confusing or misleading. Terms such as "Treasury", "State Department", "FBI", "CIA", etc. shouldn't be included.
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Terms like "Bank", "University", "Attorney", "Doctor", etc, can be added only after the additional requirements by the South Dakota State Government are fulfilled.
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(Optional) It's better to name your business something for which your desired domain is available.
| Important Links - | Submit Offline Form to - |
|---|---|
| South Dakota Business Entity Search - Online Name Search Name Reservation Form - PDF Name Availability Standards - Guidelines South Dakota LLC Name Search - Instructions |
Secretary of State Capitol Building 500 East Capitol Avenue Pierre, SD 57501-5070 |
Reserve Business Name for Future
If you do not wish to file your LLC right now but want to hold the name you have decided on, then you can reserve your LLC name for 120 days. To keep the name, you must file a name reservation application and pay $25 to reserve your name with the South Dakota Secretary of State.
Doing Business As (DBA) or Trade Name
Once you have a legal name for your LLC, you can register it. However, it is not mandatory. You can, instead, use DBA, Fictitious Name, or Trade Name. In that case, you must register your name with the South Dakota Secretary of State by submitting an Application to Register a Trade Name in South Dakota along with the filing fee of $10.
Do I have to include LLC in my company email/domain?
It is not legally mandatory to use the word LLC in your domain name or email. If you want, you can use it. However, it is recommended not to use LLC in the domain name. A domain name should be short and easy to remember.
Step 2Assign a Registered Agent in South Dakota
The second step to forming an LLC in South Dakota is to appoint a Registered Agent. A registered agent is a person or business entity working on your LLC's behalf. This person or business will receive important tax forms, legal documents, all notices of lawsuits, and other official government correspondence in South Dakota. Hence, hiring a competent South Dakota Registered Agent for your LLC is necessary.
Make sure your registered agent is a resident of South Dakota or has a physical street address. The registered agent must have a physical street address in South Dakota where legal documents and official notices can be received during normal business hours. Most LLC formation companies also provide registered agent services. Below are two great LLC formation services; even if you buy their cheapest plan (normally $0), you also get registered agent service and other services at a very reasonable price.
- 1-day rush filing (add-on)
- Attorney help (legal plan)
- Established reputation
These two are our top recommendations for LLC service, as they are competent and authorized to conduct business in South Dakota. Some LLC formation services also offer standalone South Dakota registered agent services. You can purchase only Registered Agent services without purchasing any other LLC formation services. This standalone service might become handy if you are doing it yourself and don't want to disclose your home address.
Who Can Be a Registered Agent?
A person above 18 years of age and who has a physical address in the state of South Dakota can be a Registered Agent. A Registered Agent can be an independent person or a business entity. One is responsible for handling all the legal documents on the LLC's behalf.
Can I Be My Own Registered Agent?
Yes, you can be your own registered agent if you are a resident of the state of South Dakota and you are above 18 years of age. To become a registered agent, you must have the authority to conduct any type of business in South Dakota.
Why Shouldn't I be My Own Registered Agent?
There are a few reasons why you shouldn't be your own registered agent. The address of the registered agent is used to communicate with the SOS or for any legal activities. If you are your own registered agent, you might have to upload your personal address to the public forum. Besides, the registered agent must be at the address during business hours. It won't be easy for you, as you also have to take care of other things in your LLC. Hence, it is wiser to appoint a separate entity as your registered agent.
What is Piercing the Corporate Veil in an LLC?
If an LLC is sued in South Dakota, in some cases, courts might decide to lift the corporate veil, which means the owners of the LLC will be personally liable for their business debts. They might have to forgo their personal assets to repay their business debts. This is called piercing the corporate veil, where personal and business assets are no longer separated. Your personal assets can be protected if you have enough capital and all your LLC documents are properly filed.
Registered Agent Consent Application
In South Dakota, there is no separate Consent Letter to be produced to the Secretary of State. At the time of change of Registered Agent (or the name or address), the new Registered Agent has to sign the consent letter. It comes with the Application form to Change the Registered Agent. The filing fee of $10 should be paid for it. For more information on the same, read our guide on South Dakota Registered Agent.
Step 3File Articles of Organization in South Dakota
The third and most important step in forming a South Dakota LLC is to file the Articles of Organization. This South Dakota Articles of Organization is a legal document that is required to register your business with the South Dakota Secretary of State. It costs $150 (online and $165 by mail) to file your formation certificate in South Dakota.
The Articles of Organization include details like the name of the LLC, the registered agent's name, address, management structure (member-managed or manager-managed), and the company's structure (member-managed or manager-managed). Before hiring employees in a South Dakota LLC, one should thoroughly know the rules and regulations. Also, if you are expanding your existing business (an LLC) in other states to South Dakota, you must register as a South Dakota Foreign LLC.
How to File Online
Go to the Secretary of State Online Service. You will get the online service page. It does not require logging in or signing up to file your LLC online. You can directly start filing your LLC by clicking on the "Online Filing" button below. Read more about the South Dakota Articles of Organization for online registration.
Processing Time: Online filings are generally processed the same day to 1 business day. Mail filings typically take about 5 business days. However, document processing times may change due to various factors.
Step 4Create Your South Dakota LLC Operating Agreement
Moving on to the fourth step, creating your operating agreement. An operating agreement is a document that legally outlines the proprietorship and operating procedures of your LLC. If you're starting an LLC with your spouse, you need an operating agreement for that. This document is vital as it ensures that all business owners are on the same page regarding how they operate, thus reducing future conflicts.
When it comes to creating a South Dakota LLC Operating Agreement, the state does not require you to have a comprehensive operating agreement, but it is ideal to have one that contains all the details of your business operation, which helps in making future business decisions, especially if you decide to dissolve South Dakota LLC later. Hence, having an operating agreement may not be necessary, but it is surely ideal.
Step 5Filing a South Dakota LLC EIN
The Employer Identification Number (aka EIN) is a nine-digit number given by the Internal Revenue Service (IRS) to make it easier to identify the type of business for tax purposes and taxes in general. The EIN is necessary for any active business or any form of business.
For an LLC in South Dakota, an EIN is required when the LLC hires employees. Apart from that, banking services, tax filings, and many other government documents require an LLC to obtain an EIN in South Dakota. On the other hand, if your LLC is based in another state (home state) and you are expanding your business in South Dakota, you must get an EIN to establish a Foreign LLC in South Dakota.
To obtain an EIN (aka FEIN), one must fill out a form (Online or by mail) and submit it to the IRS. Enter details of your LLC, and finally, complete the form and send it to the address given. You can also get an EIN Assistant to help you with the process.
Mail to: Internal Revenue Service, Attn: EIN Operation, Cincinnati, OH 45999
Fax: (855) 641-6935 | Fee: Free
After Starting Your South Dakota LLC
After forming your LLC, there are still some things that you will need. The most important thing is to separate your business and personal assets. LLCs have limited liability protection that protects your personal assets from business liability. This is called a corporate veil. However, the corporate veil can be lifted or pierced by the court if the LLC is sued. In that case, the owners of the LLC become personally liable for their corporate debts. A few things, like appointing a legit registered agent, having enough capital, and filing all the major documents with the state, can save the LLCs from being pierced through the corporate veil.
BOI Report Filing
According to the Corporate Transparency Act, foreign entities registered to do business in the U.S. must file a BOI report with FinCEN. However, note that as of March 26, 2025, FinCEN issued an interim final rule removing BOI reporting requirements for all domestic U.S. companies and U.S. persons. If your LLC was formed under U.S. law, you are currently exempt from BOI filing obligations — consult the FinCEN BOI page for the latest guidance, as this regulatory area remains subject to change.
Apart from that, there are a few things you need to take note of,
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Get a company business bank account
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File South Dakota business permits & licenses
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Get general liability insurance and professional liability insurance with coverage for employees.
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File a South Dakota LLC annual report. Annual reports are due on the 1st day of your LLC's anniversary month. The filing fee is $55 online or $70 by mail.
This page has provided you with steps for LLC formation and filing processes. You now have to remember upcoming filing deadlines and filing fees or filing costs, including fees for late filings, to make sure your LLC is up-to-date.
The LLC formation processing time in South Dakota is generally the same day to 1 business day if filed online. Mail filings typically take about 5 business days. Check how long it takes to form an LLC to know about the tentative timelines.
Cost of South Dakota LLC
LLCs can be formed for a very low price. Apart from the mandatory state filing fees, you don't have to bear additional service charges if you do it yourself. The following are the fees and taxes LLCs in South Dakota must pay to register and run a business in the state. Forming an LLC is no doubt cost-effective compared to other business structures. However, the fees and charges (tax-deductible) that you must pay to the state, such as name reservation fee, name filing fee, LLC filing fee, and Franchise Tax & Sales Tax (If applicable). Here are the main fees and taxes you must pay while forming your limited liability company in South Dakota,
| Fees/Tax | Amount to be Paid |
|---|---|
| Name Reservation Fee (online) | $25 |
| Certificate of Formation Fee | $165 (by mail and $150 online) |
| LLC Annual Fee | $55 online / $70 by mail |
| Sales Tax | 4.2% (on taxable sales, plus applicable municipal taxes) |
| State Income Tax | None (No personal, corporate. or franchise tax) |
In South Dakota, an LLC name reservation is not mandatory. You can register your LLC name at the time of registering your LLC. If you wish to hold the name for some time without registering your LLC, then you can do that online. Your LLC name will be reserved for 120 days without registering your LLC. It can be done by paying $25.
In South Dakota, an Annual Report must be filed every year. The filing fee is $55 online or $70 by mail. Annual reports are due on the 1st day of your LLC's anniversary month and may be filed up to 2 months early. A $50 late fee applies after delinquency. Administrative dissolution may occur if the report is not filed, and reinstatement requires a $150 reinstatement fee and a Department of Revenue tax clearance certificate. Read our guide on LLC costs in South Dakota for more information.
South Dakota has no personal income tax, no corporate income tax, and no franchise tax, making it one of the most tax-friendly states for LLCs.
South Dakota Foreign LLC
If you are interested in forming a Foreign LLC in South Dakota, then you need to file the Application for Certificate of Authority with the South Dakota Secretary of State. The filing fee is $750 online or $765 by mail. Foreign LLCs allow you to operate your business in more than one state. Along with the Application for Certificate of Authority, you need to submit some more documents, like the Certificate of Good Standing, etc., to the South Dakota SOS to form your foreign LLC in South Dakota. To know more in detail, check out our guide on South Dakota Foreign LLC.
Reasons to Start an LLC in South Dakota
South Dakota offers one of the most business-friendly environments for LLCs. The state has no personal income tax, no corporate income tax, and no franchise tax. Online LLC filings are generally processed the same day to 1 business day, making it one of the fastest states to form an LLC. Domestic LLCs must file an annual report each year, with a filing fee of $55 online or $70 by mail. If you plan to register an out-of-state LLC in South Dakota, keep in mind that filing an Application for Certificate of Authority costs $750 online or $765 by mail.
South Dakota LLC Formation Review
Time needed: 5 minutes.
Just to recap, here are the easy steps again when forming an LLC in South Dakota. Click on the steps in this list to read the full details.
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The first thing you must do is to choose a company name, which should be unique, easy to find, and available in the state.
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In South Dakota, it is mandatory to select a registered agent for your LLC. Get a professional Registered Agent from LLC formation services to get things done hassle-free.
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Filing a formation certificate is necessary when forming an LLC in South Dakota. Depending on the state, it could be called any of the following: Certificate of Formation, Articles of Organization, or Certificate of Organization.
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An operating agreement is not a strict requirement in South Dakota, but something encouraged when you start an LLC to avoid future conflicts.
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The Employer Identification Number (EIN), also called Federal Tax Identification Number, serves to identify a business entity like a Social Security number but for a company.
F.A.Qs
Can I file an LLC in South Dakota by myself?
You can file your South Dakota LLC by yourself. However, it is always worth having a professional rather than doing it yourself to handle legal complexities, paperwork, and other documentation.
What is the cost of forming an LLC in South Dakota in a year?
Apart from the formation fee of $150 (domestic LLC) and $750 by online / $765 by mail (foreign LLC), LLC costs in South Dakota include $55 online / $70 by mail for Annual Reports every year. LLCs are liable to pay sales tax of 4.2% on taxable sales. It is not an annual LLC fee.
How long does it take to get an LLC in South Dakota?
Online filings are generally processed the same day to 1 business day. Mail filings typically take about 5 business days.
How to renew my LLC in South Dakota?
Every year all the LLCs have to submit an Annual Report and pay $55 to the South Dakota Secretary of State and renew the LLC. It is mandatory to renew your LLC every year.
What is the tax structure for an LLC in South Dakota?
Generally, for the LLCs, it is a default tax structure. Once you will obtain the EIN, you will get the various tax structure options to select. Sometimes LLCs choose an S Corp to reduce federal tax burdens. Read more on the South Dakota Classification of LLC Tax.
In Conclusion
When it comes to forming an LLC in South Dakota, it is much simpler than other business structures. In South Dakota, starting a small business or a start-up is easy because of its diverse resources. For small budget holders, forming a limited liability company is desirable. The steps explained in this article are generic steps for starting a business in South Dakota. It is recommended to consult an attorney or service provider.