South Dakota Secretary of State office — contact, fees, and licensing

The South Dakota Secretary of State handles all business entity registrations, annual reports, amendments, and certificates of existence. Online filings through SOSEnterprise are $15 cheaper than paper submissions for formation filings. Fee amounts in the table below are sourced from the live schedule at sdsos.gov, confirmed May 2026; verify all amounts before filing.

Office contact

Walk-in address	215 E. Prospect Avenue, Pierre, SD 57501
Mailing address	Capitol Building, 500 East Capitol Avenue, Suite 204, Pierre, SD 57501-5070
Main phone	(605) 773-3537
Business filings phone	(605) 773-4845
Email	sos@state.sd.us
Office hours	Monday – Friday, 8:00 a.m. to 5:00 p.m. Central Time
SOSEnterprise portal	sosenterprise.sd.gov

Entity formation and filing fees

Online filings are $15 less than paper submissions for LLC and corporation formations. The amounts below are sourced from the live fee schedule at sdsos.gov — Filing Fees, confirmed May 2026. Verify current amounts before filing.

Filing	Online fee	Paper fee
Domestic LLC — Articles of Organization	$150	$165
Domestic LLC — Annual Report (due 1st of anniversary month)	$55	$70
Domestic For-Profit Corporation — Articles of Incorporation	$150	$165
Domestic For-Profit Corporation — Annual Report	$55	$70
Domestic Nonprofit Corporation — Articles of Incorporation	$30
Domestic Nonprofit Corporation — Annual Report	$10
Late Annual Report penalty	+$50
Name Reservation	$25
Certificate of Existence	$20	$35
Expedited processing	+$50

Key South Dakota state licensing agencies

Agency	What it covers	Website
South Dakota Department of Revenue	Sales and use tax registration, withholding tax, business tax licensing	dor.sd.gov
South Dakota Department of Labor and Regulation	Unemployment insurance registration, employer accounts, professional licensing	dlr.sd.gov
South Dakota Contractors State License Board	Contractor licensing — electrical, plumbing, mechanical, general construction	dlr.sd.gov — Contractor Licensing

This guide is informational only and is not affiliated with the South Dakota Secretary of State's office or any state agency listed above. Contact information and fee amounts verified against official South Dakota Secretary of State sources, May 2026. Confirm current amounts at sdsos.gov — Filing Fees before filing.