South Carolina diesel tax rate is 28.0¢ per gallon for 2026. Calculate your IFTA fuel tax for South Carolina routes and compare neighboring state rates.
South Carolina at 28.0¢/gal is one of the better fueling values in the Southeast — significantly cheaper than North Carolina (40.8¢) to the north and comparable to Georgia (34.2¢) to the south. Columbia is the state's freight hub at I-20/I-26/I-77. Charleston is one of the fastest-growing container ports in the US, ranking in the top 10 by TEU volume.
I-95 (North Carolina–Fayetteville NC / Savannah GA, Northeast Corridor), I-26 (Charleston–Columbia–Asheville NC), I-77 (Charlotte NC–Columbia–Fort Mill), I-85 (Charlotte NC–Gaffney–Atlanta GA), I-20 (Augusta GA–Columbia–Florence)
BMW's North American manufacturing plant in Spartanburg and Volvo's US plant in Berkeley County make South Carolina a significant automotive freight state. Boeing also operates a major 787 Dreamliner facility near Charleston. The Port of Charleston generates substantial drayage demand. North Carolina at 40.8¢ to the north means SC is the clear fueling choice for I-95 northbound drivers before crossing the border.
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