SDCL § 10-55A-6: Credit of overpaid taxes against future taxes--Eligibility for refund.

The secretary shall credit any recovery of overpaid taxes against the future taxes of the taxpayer, except:

(1) A taxpayer having no future tax obligations may receive a refund; or

(2) A taxpayer whose recovery credit is not used within one year may receive a refund equal to the amount of recovery credit unused at the end of the one year period.