The South Dakota Secretary of State handles business filings through its online portal at sosenterprise.sd.gov and by mail to its Pierre office, with services covering LLC and corporation formation, foreign qualification, annual reports, trademarks, and UCC financing statements. Paper filings cost $15 more than the same filing submitted online.1South Dakota Secretary of State. Business Services Business formation is governed by Title 47 of the South Dakota Codified Laws.2South Dakota Legislature. South Dakota Codified Law 47-34A
Forming an LLC or Corporation
Three things apply to any new entity: a name that is distinguishable from every business already on file, a registered agent with a physical South Dakota street address (not a P.O. box), and the names and addresses of the people organizing the entity.3South Dakota Legislature. South Dakota Codified Law 59-11 The registered agent accepts lawsuits and government notices on the company’s behalf and can be an individual resident or a commercial service.
For an LLC, the Articles of Organization must include the company name, the address of its designated office, the name and address of each organizer, and the registered agent’s information. If the LLC will be manager-managed instead of member-managed, name each initial manager. You also indicate whether any members will be personally liable for company debts and whether the LLC is authorized to establish one or more series.4South Dakota Legislature. South Dakota Codified Law 47-34A – Section 47-34A-203
South Dakota does not require you to state a business purpose. Duration defaults to perpetual, so list a term only if you want to limit the entity’s lifespan.
Once the office approves your filing, it issues a Certificate of Organization for an LLC or a Certificate of Incorporation for a corporation. That certificate is your legal proof the entity exists and may operate in the state.
Series LLCs
South Dakota permits series LLCs, where a parent entity creates separate child series that each hold distinct assets and liabilities. The parent files Articles of Organization that include a notice authorizing series and pays $200 instead of the standard $150. Each additional series needs its own Certificate of Designation and costs $50. All series share the registered agent listed in the parent’s articles. Series LLCs cannot be formed online; the filing must be mailed in.5South Dakota Legislature. South Dakota Codified Law 47-34A-212
Filing Fees
Common fees from the Secretary of State’s schedule:6South Dakota Secretary of State. Filing Fees
- Domestic LLC Articles of Organization: $150 online, $165 paper
- Series LLC Articles of Organization: $200, plus $50 per series
- Name reservation: $25
- Certificate of Good Standing: $20 online, $35 paper
- Annual report: $55 online, $70 paper
- Foreign LLC certificate of authority: $750
- Foreign series LLC certificate of authority: $800
- Reinstatement application: $300 (plus delinquent report fees)
- Trademark application or renewal: $125
- UCC-1 or UCC-3 financing statement: $20 per debtor online, $25 paper
Registering a Foreign Business
A corporation or LLC formed in another state that wants to operate in South Dakota must apply for a certificate of authority. You can file online or on paper, with the usual $15 paper surcharge.7South Dakota Secretary of State. Business Corporations Foreign LLCs pay $750; foreign series LLCs pay $800.5South Dakota Legislature. South Dakota Codified Law 47-34A-212
Annual Reports and What Happens If You Miss One
Every registered business must file an annual report. It is due on the first day of the anniversary month in which the business originally registered.8South Dakota Secretary of State. Certificates of Good Standing The fee is $55 online or $70 on paper.
Miss the deadline and a $50 late fee attaches to each delinquent report. Keep ignoring it and the Secretary of State will administratively dissolve the business. Dissolution strips your authority to operate in the state, and creditors may pursue claims against members or officers who were previously protected by the entity.
Reinstating a Dissolved Business
Reinstatement takes three steps. File every overdue annual report with its late fee, obtain a Tax Clearance Certificate from the South Dakota Department of Revenue, and submit an Application for Reinstatement with a $300 fee. The Secretary of State will not approve the reinstatement until the Department of Revenue confirms your tax standing, which typically takes one to two days. If another business has taken your name in the meantime, you will need to amend to a new name as part of the process.
Trademarks and Service Marks
The Secretary of State handles state-level trademark and service mark registration, which protects marks used in commerce inside South Dakota. State registration does not replace federal registration with the USPTO.
A new application costs $125. Registration lasts four years and can be renewed up to six months before expiration, also for $125. Assignments to a new owner cost the same. Incomplete applications or those missing the fee are returned.9South Dakota Secretary of State. Trademarks
UCC Financing Statements
Lenders making a secured loan against personal property file a UCC financing statement with the Secretary of State to put other creditors on notice of the security interest. These filings establish priority, which matters if the borrower defaults or ends up in bankruptcy.10South Dakota Secretary of State. UCC and EFS Information
UCC-1 and UCC-3 filings cost $20 per debtor name online or $25 per debtor on paper. Additional debtor names are $3 each, and paper attachments carry a flat $5 fee. Subscribers to the online UCC system get unlimited database searches along with electronic filing and certified copy requests.
Looking Up a Registered Business
The Secretary of State runs a free public search at the business services portal. You can search by business name or by Secretary of State Business ID number.11South Dakota Secretary of State. Business Filing Search Results show whether a company is active, dissolved, or administratively terminated, and detailed records include annual report history and current officers or directors. It is the easiest way to run basic due diligence before signing a contract with a South Dakota entity.
Beneficial Ownership Reporting
South Dakota does not impose a state-level beneficial ownership reporting requirement. Many businesses must still report their beneficial owners to the Financial Crimes Enforcement Network (FinCEN) under federal law, and the Secretary of State directs all questions on that topic to FinCEN rather than handling them in-house.12South Dakota Secretary of State. Beneficial Ownership Information