How to search South Dakota business entities online

South Dakota business entity records are searchable through the SOSEnterprise portal at sosenterprise.sd.gov — Business Search, operated by the South Dakota Secretary of State. A reCAPTCHA must be completed before search results are returned. Public searching requires no account; filing and ordering certificates require a free SOSEnterprise registration.

What the search covers

The database covers all entity types registered with the Secretary of State: domestic and foreign LLCs (including series LLCs), corporations (profit and nonprofit), LLPs, limited partnerships, cooperatives, and sole proprietorships registered at the state level. Trademarks are searchable through a separate tool at sosenterprise.sd.gov — Trademark Search.

Search options

Two primary search modes are available:

• Business Name — with "Starts With" or "Contains" match options; an "Active Entities Only" checkbox filters to currently active records
• Business ID — direct lookup by the SOS-assigned entity identifier

Registered agent searches use a separate portal at sosenterprise.sd.gov — RA Search, which searches by agent name or RA number. No officer or director search is available in the public portal.

Annual report — anniversary-month due date

South Dakota annual reports are due on the first day of the entity's anniversary month each year. An entity formed on July 20 has its annual report due July 1 each subsequent year. Reports may be filed up to two months early. Entities that have not filed become delinquent two months after the due date, at which point the $50 late fee applies and the SOS may begin administrative dissolution proceedings.

This guide is informational only and is not affiliated with the South Dakota Secretary of State's office. Verify current procedures at sdsos.gov — Business Services. Source: South Dakota Secretary of State, verified May 2026.