Updated July 28, 2026 - AAA daily average
Diesel Cost per Gallon in South Carolina (2026)
$5.18/GAL
+0.05 vs US average ($5.13)Rank #23 of 50 statesPADD 1
Diesel Tax Breakdown
Federal diesel excise tax24.4c/gal
South Carolina state diesel tax28.0c/gal
Total tax52.4c/gal
Tax as % of price10%
Sources: Federation of Tax Administrators, EIA. Rates as of April 2026.
Nearby States Comparison
North Carolina
$5.28+0.10
Georgia
$5.28+0.10
CALCULATE YOUR FUEL COST IN SOUTH CAROLINA
Use our trip calculator prefilled at $5.18/gal for South Carolina.
Sources: State diesel average from AAA Gas Prices (gasprices.aaa.com), July 28, 2026; US average and PADD context from the EIA Weekly On-Highway Diesel Fuel Survey (July 20, 2026); state tax from the Federation of Tax Administrators diesel tax table. State prices are representative averages; actual pump prices vary by retailer and location.