S.D. Codified Laws § 60-11-3.2
Beginning January 1, 2016, and again on January 1 of each year thereafter, the minimum wage provided by § 60-11-3 shall be adjusted by the increase, if any, in the cost of living. The increase in the cost of living shall be measured by the percentage increase as of August of the immediately preceding year over the level as measured as of August of the previous year of the Consumer Price Index (all urban consumers, U.S. city average for all items) or its successor index as published by the U.S. Department of Labor or its successor agency, with the amount of the minimum wage increase, if any, rounded up to the nearest five cents. In no case shall the minimum wage be decreased. The Secretary of the South Dakota Department of Labor and Regulation or its designee shall publish the adjusted minimum wage rate for the forthcoming year on its internet home page by October 15 of each year, and it shall become effective on January 1 of the forthcoming year.
SDCL 60-11-3.2