How to start an LLC in South Dakota
South Dakota charges $150 to file an LLC's Articles of Organization online with the Secretary of State, and $165 by mail, since paper filings carry an extra $15 charge on top of the same base fee. The state has no personal or corporate income tax, which is the main reason it draws LLCs and trusts from owners who live and operate elsewhere. This guide covers naming, the registered agent, the Articles of Organization filing itself, EIN and state tax registration, sales tax and licensing, and the annual report that keeps the LLC in good standing.
South Dakota LLC facts at a glance
| Official filing agency | South Dakota Secretary of State, Business Services Division |
|---|---|
| Formation document | Articles of Organization |
| State filing fee | $150 |
| Filing methods | Online through the Secretary of State's business filing system, By mail with a paper Articles of Organization, for an additional $15 paper filing fee |
| Typical processing (recent) | 5-7 business days |
| Typical expedited processing | Not offered |
| Registered agent | Required |
| Annual Report | $50, due First day of anniversary month |
| Late penalty | $50 + administrative dissolution after 2 months |
| State-level business tax | No franchise tax. No state income tax. |
| Publication requirement | None |
| Online versus paper filing fee | The Articles of Organization cost $150 when filed online through the Secretary of State's business filing system. A paper filing costs $165, since South Dakota adds a flat $15 surcharge to any Articles of Organization submitted on paper rather than online. |
| No state income tax | South Dakota has no personal income tax and no corporate income tax. An LLC's pass-through profit is only taxed at the federal level for its members, and a C-Corp election does not trigger a state corporate income tax either. |
| State sales tax rate | South Dakota's statewide sales and use tax rate is temporarily reduced to 4.2%, effective July 1, 2023 through June 30, 2027 under House Bill 1137. Unless extended again, the rate reverts to 4.5% on July 1, 2027. Municipalities can add their own local sales tax on top of the state rate. |
| Expedited service | The Secretary of State offers expedited service for an additional $50 on top of the standard fee, for filings that need to be completed sooner than the normal course of business. |
| Registered agent structure | South Dakota follows the Model Registered Agents Act. An LLC can appoint a commercial registered agent listed with the Secretary of State, a named noncommercial individual or entity with a South Dakota street address, or an internal office or position whose holder receives service of process. |
Processing times reflect recent official guidance and change often. Check the South Dakota Secretary of State, Business Services Division current processing calendar before you rely on a date.
File it yourself
South Dakota accepts filings directly from business owners. You do not need us, or any other company, to form your LLC. Here is the official portal.
the South Dakota Secretary of State's online business filing systemThe South Dakota lessons
- 1Name your South Dakota LLCRequired wording, the distinguishable name standard, and checking availability before you file.
- 2Appoint your South Dakota registered agentWho qualifies under the Model Registered Agents Act, the registered office requirement, and changing agents.
- 3File the Articles of OrganizationThe $150 online fee versus the $165 paper fee, what the filing requires, and expedited service.
- 4Get an EIN and register with the Department of RevenueThe free IRS EIN, and when a South Dakota LLC needs a sales tax license.
- 5South Dakota LLC taxes, sales tax and licensingWhy there is no state income tax, the current sales tax rate, and where local licensing applies.
- 6Open a bank account and file your South Dakota annual reportWhat banks require, the $50 online / $65 paper annual report, and dissolution risk if you miss it.
Related Gullia Filing pages
Or let us file your South Dakota LLC for you
Everything above is yours to use for free. If you would rather hand it over, we prepare and file the Articles of Organization, act as your registered agent, and track your ongoing deadlines.
Official sources
- South Dakota Secretary of State: Limited Liability Company forms
- South Dakota Secretary of State: Domestic LLC Articles of Organization
- South Dakota Secretary of State: Domestic LLC Annual Report
- South Dakota Secretary of State: Annual Report online filing instructions
- South Dakota Secretary of State: Filing Fees
- South Dakota Secretary of State: Business Services contact and search
- South Dakota Codified Laws Chapter 47-34A: Uniform Limited Liability Company Act
- South Dakota Codified Laws Chapter 59-11: Model Registered Agents Act
- South Dakota Department of Revenue: Sales and Use Tax Guide
- South Dakota Department of Revenue: 2023 Legislative Updates on the sales tax rate reduction
- South Dakota Department of Revenue: Business Tax registration
- IRS: apply for an Employer Identification Number
Last reviewed: September 2026 - reviewed by Gullia Filing Legal & Formation Team, Corporate formation specialists and registered agents
