South Dakota Business Entity Search
Find a registered business through South Dakota Secretary of State, Business Services. Use the official link below, then check the search options and name rules for South Dakota.
Official website: sosenterprise.sd.gov · Opens in a new tab
South Dakota search options and record coverage
South Dakota provides business-name availability search, entity search, and search by registered agent. Public records show entity status, filing history, registered office/agent, annual reports, and available documents; the registry also provides forms for commercial and noncommercial agents.
Checking a business name in South Dakota
A South Dakota name must be distinguishable on record; the Secretary explains that this can include whether two names sound the same. Punctuation, capitalization, spacing, and generic designators rarely cure confusing similarity, and the availability tool is expressly preliminary rather than a legal opinion.
South Dakota name reservations
South Dakota LLC name reservation is $25; the online form and statute control the reservation period and renewal mechanics. The name must be distinguishable on record, meaning sound-alike confusion can matter; a preliminary search is not a legal guarantee.
DBA, trade names, and fictitious names
South Dakota provides a state-level DBA/fictitious-name filing through Business Services at https://sdsos.gov/Business-Services/default.aspx. Use the current assumed-name form and fee, remember that an assumed name does not create liability protection, and check renewals and county licensing separately.
What do you need after the search?
- Official proof of standing — find certificate fees and ordering instructions.
- A missed report or inactive registration — check deadlines and reinstatement rules.
- A new business registration — compare South Dakota formation and filing fees.