Trucking in South Carolina (2026)
Everything an owner-operator or fleet needs to operate legally and profitably in South Carolina — IFTA, insurance, weigh stations, DOT, and freight market notes for SC.
IFTA & fuel tax in South Carolina
South Carolina IFTA fuel tax: 28¢/gal diesel. File IFTA returns quarterly (due the last day of the month following the quarter end). Keep distance records by jurisdiction — odometer at state line, or GPS-derived equivalent — and fuel receipts showing gallons, location, and date. The base jurisdiction handles your IFTA license and decals.
SC commercial truck insurance
South Carolina insurance averages $10,000–$13,500/yr. Federal minimum liability for interstate operation is $750,000 (general freight) or $1M+ (hazmat); most shippers and brokers require $1M auto liability and $100k cargo regardless of what your state minimum is. Premiums in South Carolina are influenced by CDL experience, MVR, equipment age, radius of operation, and the safety scores of any motor carrier you're leased to.
Weigh stations & DOT enforcement in South Carolina
Permanent and mobile weigh stations operate along major South Carolina corridors. PrePass and Drivewyze bypass services are accepted at most permanent SC scales — a good carrier-safety score (CSA BASIC under threshold) usually means a green light. Plan stops for HOS compliance and pre-trip before approaching a scale; the most common citations are logbook/ELD violations, brake adjustment, and tire condition.
Freight market in South Carolina
Port of Charleston, BMW Spartanburg, and Greenville-Spartanburg manufacturing freight. Track inbound/outbound balance on your load boards — markets with heavy inbound consumer freight usually pay less outbound, while production-heavy markets (SC included where applicable) can pay premium outbound rates if you time it right.
Weather & route notes for South Carolina
Plan around regional weather: summer thunderstorms, winter snow/ice corridors, and known mountain or desert grades hurt MPG and add transit risk. Check 511 services and state DOT alerts before long runs.
Calculators tuned for this state
- Cost per mile in South Carolina — diesel + fixed costs for SC owner-operators
- Fuel surcharge calculator — convert diesel price moves into an FSC
- Load profit calculator — should you book this load?