South Dakota diesel tax rate is 28.0¢ per gallon for 2026. Calculate your IFTA fuel tax for South Dakota routes.
Calculate Your South Dakota IFTA Tax
Gallons consumed in South Dakota→
Net taxable gallons→
South Dakota tax rate (2026)→28.0¢/gal
Estimated South Dakota IFTA→
Positive = amount owed to South Dakota; negative = credit on your return.
South Dakota IFTA Rates & Trucking Overview 2026
South Dakota's diesel rate is 28.0¢/gal (2Q 2026). Sioux Falls is South Dakota's primary freight hub at I-90/I-29 and serves as a major distribution center for western Minnesota, southwestern Wisconsin, and northeastern Nebraska. The Mount Rushmore/Black Hills region in western SD generates tourism-related freight.
What is South Dakota's IFTA diesel tax rate in 2026?
South Dakota's diesel rate is 28.0¢/gal. South Dakota has no state income tax.
Who administers IFTA for South Dakota-based carriers?
South Dakota IFTA is administered by the Department of Revenue. File quarterly at dor.sd.gov.
What freight moves through Sioux Falls?
Agricultural commodities (corn, soybeans, pork from SD's large hog industry), retail distribution (Sioux Falls serves as a regional DC hub), and healthcare freight for Sanford and Avera hospital systems. The I-29/I-90 interchange makes Sioux Falls a natural distribution center for the upper Midwest.
Are there considerations for I-90 in the Black Hills?
I-90 through Spearfish Canyon and the Black Hills has significant grades and curves. Commercial vehicles should check weather conditions at sd511.org during winter. The Sturgis Motorcycle Rally in August significantly impacts traffic on US-14A and surrounding routes for approximately two weeks.