South Dakota Secretary of State, Division of Business Services

South Dakota business entity search

Look up a South Dakota corporation, LLC, or nonprofit. Federal filings are searched on this page. The South Dakota Secretary of State, Division of Business Services keeps the state registry, and the steps below show how to search it.

Federal filings searched here. The South Dakota registry record is on the official site.

South Dakota registry at a glance

Registry agency	South Dakota Secretary of State, Division of Business Services
Office	Secretary of State: Monae L. Johnson
Phone	605-773-4845
Address	Capitol Building, 500 East Capitol Avenue, Ste 112, Pierre, SD 57501-5070
Hours	8 a.m. to 5 p.m. Central Time, Monday to Friday; closed on recognized holidays
Official search	Business Information Search
Registry number	Business ID. Two letters and six digits; the letters show the record type, for example DL331405 (South Dakota LLC), FL002454 (foreign LLC), NS010743 (South Dakota nonprofit), UB194968 (DBA).

How to search the South Dakota registry

The Business Information Search searches by business name (starts with or contains), secretary of State Business ID and active entities only filter.

Open the Business Information Search on sosenterprise.sd.gov.
Type the business name and pick Starts With or Contains, or enter the Business ID.
Tick Active Entities Only if you want to hide dissolved and expired records, then select Search.
Scan the result table for the Business ID, entity type, home state, filing date and status.
Open the record to see the registered agent, annual report due date and filing history.

Open the official South Dakota search

Three numbers, three agencies

Asking for the wrong number is a common reason a search comes back empty.

Number	Issued by	What it identifies
Federal EIN	Internal Revenue Service	Identifies the business for federal tax. It is the same number in every state.
Business ID	South Dakota Secretary of State, Division of Business Services	Identifies the entity's record in the state registry. Two letters and six digits; the letters show the record type, for example DL331405 (South Dakota LLC), FL002454 (foreign LLC), NS010743 (South Dakota nonprofit), UB194968 (DBA).
South Dakota Department of Revenue tax license	South Dakota Department of Revenue	South Dakota has no corporate income tax; sales and other tax licenses come from the Department of Revenue and are separate from the federal EIN and the Secretary of State Business ID.

What a South Dakota status means

Status	What it means
Good Standing	The entity is registered and its annual reports are current.
Delinquent	The annual report was not filed within 2 months after its due date, and late fees apply.
Administratively Dissolved / Revoked	The state dissolved a domestic entity or revoked a foreign one, often after it stayed delinquent; reinstatement requires the missed reports, fees and a tax clearance certificate.
Active / Cancelled / Expired	Statuses used for DBA (fictitious business name) records.

Fees and annual filings

LLC formation	$150 online; $165 on paper
Corporation formation	$150 online; $165 on paper
Annual filing	Annual Report
Annual fee, LLC	$55 online; $70 on paper
Annual fee, corporation	$55 online; $70 on paper
When it is due	Due every year on the 1st day of the anniversary month of the original filing; it can be filed up to 2 months early. LPs and business trusts do not file.
Late filing	If not filed within 2 months after the due date, the entity becomes delinquent and a $55 late fee applies; continued delinquency can lead to administrative dissolution.
Filed with	Secretary of State, online through Business Services Online

Foreign corporations and LLCs pay $750 online for a certificate of authority. Paper filings carry a $15 paper fee.

As published by the South Dakota Secretary of State, Division of Business Services, checked 2026-10-06. Fees change, and the official schedule decides.

Forming or running a business in South Dakota

Entities keep a registered agent on file, which can be a commercial registered agent listed with the Secretary of State, and the public search can look up businesses by agent.

South Dakota businesses on file

The largest organizations with a South Dakota address in the federal filings searched here, biggest first.

DAKTRONICS, INC.EIN 46-0306862
RAVEN INDUSTRIES, INC.EIN 46-0246171
SONIFI SOLUTIONS, INC.EIN 46-0371161
THE EVANGELICAL LUTHERAN GOOD SAMARITAN SOCIETYEIN 45-0228055
BLACK HILLS CORPORATIONEIN 46-0458824
GREAT WESTERN BANCORP, INC.EIN 42-0867112
SOUTH DAKOTA BANKERS ASSOCIATIONEIN 46-0191650
BLACK HILLS CHILDRENS RANCH INCEIN 46-0358693
ASSEMBLIES OF GOD CHURCHEIN 44-0577787
MAGUIRE TANK, INC. MAGUIRE IRON, INC.EIN 46-0256425
SOUTH DAKOTA STATE UNIVERSITY FOUNDATIONEIN 46-0273801
BLACK HILLS WORKS INCEIN 46-0341382
UNIVERSITY OF SOUTH DAKOTA FOUNDATIONEIN 46-6018891
DAKOTA WESLEYAN UNIVERSITYEIN 46-0224589
RURAL OFFICE OF COMMUNITY SERVICESEIN 46-0365648
BOYS AND GIRLS CLUBS OF SIOUX EMPIREEIN 46-0399482
SESDAC INCEIN 46-0319590

All 17 South Dakota businesses on file

Sources

Facts on this page come from the official pages below, checked 2026-10-06. A fact that could not be confirmed on an official page is left out.