S.D. Codified Laws § 54-4-71
Any title loan shall be for an initial term of no more than one month but may be renewed for additional one-month periods. No title loan may be renewed more than four times except as provided in this section. Upon the fifth renewal of a title loan, and through the eighth renewal, the debtor shall make payment of at least ten percent of the original principal amount of the title loan, in addition to any finance charges that are due. If at any renewal requiring a principal reduction, the debtor has not made previous principal reductions adequate to satisfy the current required principal reduction, and the debtor does not pay at least ten percent of the original loan amount, the title lender may either declare the debtor in default or renew the title loan and defer the required principal payment for an additional period. However, no further finance charges may accrue or be earned against the principal amount so deferred. For purposes of this section, a renewal is any extension or continuation of a title loan for an additional period without any change to the title loan or its terms other than a reduction in principal. After the eighth renewal the title loan is due in full and no further finance charges or fees may accrue or be earned.
SDCL 54-4-71