S.D. Codified Laws § 61-5A-32
At the end of each taxable year, the department shall determine whether the total of payments for such year made by a nonprofit organization is less than, or in excess of, the total amount of regular benefits plus one-half of the amount of extended benefits paid to individuals during such taxable year based on wages attributable to service in the employ of such organization. Each nonprofit organization whose total payments for such year are less than the amount so determined shall be liable for payment of the unpaid balance to the fund in accordance with § 61-5A-31. If the total payments exceed the amount so determined for the taxable year, all or a part of the excess, may, at the discretion of the department, be refunded from the fund or retained in the fund as part of the payments which may be required for the next taxable year.
SDCL 61-5A-32