South Dakota Codified Laws — Title 10 (Taxation)
SDCL § 10-47B-29 — Due date for remittance of excise taxes
All tax required to be remitted by §§ 10-47B-21 to 10-47B-27 , inclusive, is due and payable by electronic transfer on or before the twenty-fifth day of the month following each period.
Source: official text