Learn the steps to form an LLC in South Dakota – from choosing your name to filing your Articles of Organization. $1 + $150 state fee. Start today.
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Filing fee: $150 online (Articles of Organization); $165 on paper
Processing time: Immediate online via SOSEnterprise; about a week by mail (a $50 expedite exists for paper filings)
State agency: South Dakota Secretary of State (sosenterprise.sd.gov)
Annual report due: First day of your anniversary month each year — $55 online ($70 paper), with a $55 late fee if still unfiled two months on, then dissolution.
State tax rate: No personal income tax and no corporate income tax — one of only two such states. Sales tax is 4.2% state (returning to 4.5% in July 2027) plus up to 2% municipal
Start your U.S. business journey today. Form your company with confidence and let Brio handle the paperwork.
Forming an LLC in South Dakota takes 5 steps: choose and check your business name, appoint a Registered Agent with a physical South Dakota address, file Articles of Organization online or by mail, draft an operating agreement, and get an Employer Identification Number (EIN) from the IRS. The state filing fee is $150 online.
South Dakota and Wyoming are the only two states with neither an income tax nor a gross-receipts-style business tax — no personal income tax, no corporate income tax, nothing on pass-through LLC profits at the state level. Add instant online formation, a business-friendly legal climate that has made the state a national hub for trust companies, and reasonable privacy (member-managed LLCs don’t have to list members in the Articles), and South Dakota earns its reputation. An LLC gives you personal liability protection and pass-through taxation without the administrative overhead of a corporation.
The usual honesty caveat applies: if your business actually operates in another state, forming in South Dakota won’t shield that income from your home state’s taxes — you’d register there as a foreign LLC and pay both states’ fees. And while there’s no income tax, South Dakota’s sales tax has an unusually broad base that covers most services, not just goods, so most businesses — including service providers — need the free sales tax license before opening.
Unlike some states, South Dakota doesn’t require you to reserve your name before filing — you simply claim it when you file your Articles of Organization. If you’re not ready to file yet, you can reserve a name for $25, which holds it for 120 days.
Your LLC name must be distinguishable from every corporation, LLC, limited partnership, and reserved name on the Secretary of State’s records, and must include a designator like “Limited Liability Company,” “Limited Company,” “LLC,” “L.L.C.,” “LC,” or “L.C.” Check the state’s business search on SOSEnterprise before you file to avoid a rejection.
Every South Dakota LLC must have a registered agent — a person or entity designated to receive legal notices and government documents on behalf of the business. The agent must have a physical street address (or rural route box) in South Dakota — a P.O. box alone doesn’t qualify — and be available during regular business hours. The agent can be a resident individual, including a member, or a commercial registered agent listed with the state.
You can serve as your own registered agent if you have a physical South Dakota address and can be there during business hours. Many business owners — especially the many non-residents who form here — use a professional registered agent service instead: it supplies the required in-state address, keeps your personal details off public records, and ensures someone is always available to receive documents.
The Articles of Organization is the document that legally creates your South Dakota LLC. You file it with the Secretary of State through the SOSEnterprise portal — $150, approved immediately upon payment, making South Dakota one of the fastest states in the country — or on paper for $165, which takes several days of processing plus mail time. A $50 expedite exists but only matters for paper filings; online needs no help.
The Articles must include your LLC’s name, your registered agent’s information, the principal office, and the organizers. A privacy note: for member-managed LLCs the member section is optional — leave it blank and no owner names enter the public record — while manager-managed LLCs must list their managers. Whatever you do include becomes publicly searchable, so fill in only what’s required.
South Dakota doesn’t require you to file an operating agreement with the state, but you should have one — especially if you kept member names out of the public Articles, since the agreement then serves as the primary written proof of who owns the company. It defines how your LLC is managed: who owns what, how profits are distributed, and how decisions get made.
Your operating agreement should specify whether the LLC is member-managed or manager-managed. In a member-managed LLC, all owners share day-to-day authority. In a manager-managed LLC, a designated manager handles operations while other members retain economic rights. A written agreement is the version that holds up when disputes arise.
An Employer Identification Number (EIN) is a 9-digit federal tax ID issued by the IRS. Your South Dakota LLC needs one to open a business bank account, hire employees, and file federal taxes. Applying online at irs.gov is free and issues your EIN immediately after you complete the application.
To use the IRS online application, the responsible party must have a valid Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN), and the business must have its principal place of business in the United States. The IRS does not charge a fee for issuing an EIN.
South Dakota LLCs file one report with the Secretary of State: an annual report due on the first day of your anniversary month each year (the window opens two months early). It costs $55 online or $70 on paper — note these rose from $50/$65 in July 2025, so older guides are off by a few dollars. Stay unfiled two months past the due date and a $55 late fee lands, good standing is lost, and the state can dissolve the LLC 60 days after serving notice.
There’s no general state business license and no income tax filing at the state level. The one registration most businesses need is the free sales tax license from the Department of Revenue — and in South Dakota that includes most service businesses, since the sales tax base covers services broadly. Collect 4.2% state (scheduled to return to 4.5% on July 1, 2027) plus up to 2% municipal. If an LLC is dissolved for missed reports, reinstatement costs $150 plus all back reports and late fees, and requires a tax clearance certificate from the Department of Revenue.
The required South Dakota state fee is $150 to file the Articles of Organization online, or $165 on paper. The annual report is $55 online each year ($70 paper), and name reservation is optional at $25. The sales tax license, when you need one, is free. There’s no additional state fee to get your EIN; the IRS issues EINs for free.
Yes. South Dakota allows a single person to form and own an LLC – this is called a single-member LLC. You can complete the Articles of Organization yourself through the SOSEnterprise portal without an attorney, with approval the moment you pay. You’ll still need a registered agent with a physical South Dakota address — that can be yourself if you live in the state, or a professional service if you don’t.
No. South Dakota charges a $150 Articles of Organization fee online – that’s a required state fee you can’t avoid. What you can avoid is paying extra for formation help. We handle your South Dakota LLC filing for $1; you only pay the required state fees.
Yes. Every South Dakota LLC files an annual report due the first day of its anniversary month, at $55 online or $70 on paper (fees that rose from $50/$65 in mid-2025 — many sites still quote the old numbers). There’s a two-month cushion before delinquency, but after that a $55 late fee applies and dissolution follows 60 days after the state’s notice. Reinstatement runs $150 plus every back report and late fee, and needs a tax clearance from the Department of Revenue.
Yes, every South Dakota LLC is required to have a registered agent. A registered agent is a person or entity that receives legal notices and official government documents on behalf of your LLC. The agent must have a physical street address or rural route box in South Dakota — a P.O. box alone doesn’t qualify — and be available during regular business hours. You can serve as your own registered agent or use a professional service.
The mistakes that come up most often are assuming “no income tax” means no state obligations at all — then skipping the free sales tax license, not realizing South Dakota taxes most services, or missing municipal add-on taxes — and relying on outdated fee figures (the annual report has been $55/$70 since July 2025). Others include missing the anniversary-month report until the late fee and dissolution clock start, non-residents expecting an SD LLC to erase home-state income taxes (it doesn’t), paper-filing at $165 when online is $150 and instant, and manager-managed filers not expecting their names to become public record.
Instantly, if you file online — SOSEnterprise approves Articles of Organization immediately upon payment, putting South Dakota among the fastest states anywhere. Paper filings take roughly 1-5 business days of processing plus mail transit, with a $50 expedite available if you must file on paper. For everyone else: just file online.
Thinking about another state? Compare Wyoming, Delaware, Texas and Florida — or browse all 50 state guides.
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