Cost Per Mile to Operate a Truck in South Dakota (2026)
What it actually costs owner-operators to run a semi-truck in South Dakota — diesel, insurance, IFTA, and freight market notes for SD.
Diesel prices in South Dakota
The average diesel price in South Dakota is roughly $3.65/gal. For a truck running 8,000 miles/month at 6.5 MPG, that's about $4,492/month in fuel alone — or roughly $0.56/mile. Fuel is typically 30–40% of total cost per mile, so South Dakota's diesel price has a major impact on whether a load is profitable.
Trucking insurance in South Dakota
South Dakota insurance averages $9,000–$12,000/yr — among the lowest. Annual premiums vary widely based on CDL history, equipment age, and operating radius.
SD IFTA and fuel taxes
South Dakota IFTA fuel tax: 28¢/gal diesel. File quarterly and keep accurate trip mileage records by jurisdiction to stay compliant.
Freight market in South Dakota
Agriculture and Sioux Falls distribution.
How to lower your cost per mile in South Dakota
- Track diesel by region — refuel where the all-in price (pump + state tax) is lowest.
- Negotiate fuel surcharge into every contract using a clear formula tied to the DOE index.
- Reduce deadhead — a 20% deadhead ratio adds 25% to your effective cost per loaded mile.
- Run our Cost Per Mile Calculator monthly with real receipts, not estimates.