S.D. Codified Laws § 12-27-11
No person, entity, candidate, or political committee may give or accept a contribution unless the name, mailing address, city and state of the contributor is made known to the person, entity, candidate, or political committee receiving the contribution. In addition to any other information to be made known under this section, the name of the custodial parent or parents of an unemancipated minor who makes a contribution shall be made known. Any contribution, money, or other thing of value received by a candidate or political committee from an unknown source shall be donated to a nonprofit charitable entity. A violation of this section is a Class 2 misdemeanor. A subsequent offense within a calendar year is a Class 1 misdemeanor.
SDCL 12-27-11