South Dakota business filing due dates

The South Dakota deadlines Ordexly tracks for Oct 2026 to Oct 2027. Every date links to the agency page it was checked against (last checked ). Which ones apply to a business depends on its registrations and filing frequency, so confirm with the agency.

Annual report based on formation date

South Dakota Annual Report (1st of anniversary month). SD SOS FAQ — due first day of anniversary month Official source.

Ordexly works out this date for each business from its formation month.

Sales & use tax

DueDeadlineSource
South Dakota sales tax return (bimonthly) Sep-Oct 2026official source
South Dakota sales tax return (monthly electronic filers) October 2026official source
South Dakota sales tax return (monthly electronic filers) November 2026
Moved from Sun, Dec 20 (weekend).		official source
South Dakota sales tax return (bimonthly) Nov-Dec 2026official source
South Dakota sales tax return (monthly electronic filers) December 2026official source
South Dakota sales tax return (semiannual) Jul-Dec 2026official source
South Dakota sales tax return (monthly electronic filers) January 2027
Moved from Sat, Feb 20 (weekend).		official source
South Dakota sales tax return (bimonthly) Jan-Feb 2027
Moved from Sat, Mar 20 (weekend).		official source
South Dakota sales tax return (monthly electronic filers) February 2027
Moved from Sat, Mar 20 (weekend).		official source
South Dakota sales tax return (monthly electronic filers) March 2027official source
South Dakota sales tax return (bimonthly) Mar-Apr 2027official source
South Dakota sales tax return (monthly electronic filers) April 2027official source
South Dakota sales tax return (monthly electronic filers) May 2027
Moved from Sun, Jun 20 (weekend).		official source
South Dakota sales tax return (bimonthly) May-Jun 2027official source
South Dakota sales tax return (monthly electronic filers) June 2027official source
South Dakota sales tax return (semiannual) Jan-Jun 2027official source
South Dakota sales tax return (monthly electronic filers) July 2027official source
South Dakota sales tax return (bimonthly) Jul-Aug 2027official source
South Dakota sales tax return (monthly electronic filers) August 2027official source
South Dakota sales tax return (monthly electronic filers) September 2027official source

Unemployment / reemployment

DueDeadlineSource
South Dakota UI reemployment Q3 2026official source
South Dakota UI reemployment Q4 2026official source
South Dakota UI reemployment Q1 2027official source
South Dakota UI reemployment Q2 2027official source

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Nearby: Iowa due dates · Minnesota due dates · Montana due dates · North Dakota due dates · Nebraska due dates · Wyoming due dates

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Federal due dates · All states · South Dakota coverage details