South Dakota: Corporations

Tax Rate (2012) 
Corporate Marginal Income Tax Rate None
Individual Income Tax Rate None
Sales Tax Rate 4%
Business Tax Climate Index Rankings (2011) 
Business Tax Climate Index 1
Corporate Tax Index Rank 1
Individual Income Tax Index Rank 1
Sales Tax Index Rank 25
Unemployment Insurance Tax Index Rank 36
Property Tax Index Rank 13

Sources:
Tax Foundation (2011)

Glossary