South Carolina IFTA Calculator
Example rate: ~$0.280/gallon. Enter your actual miles and gallons below to estimate what you owe.
Rates shown are illustrative example rates for this demo calculator. Pull current quarterly rates from IFTA Inc. before filing.
| State | Taxable Gal. | Tax Owed |
|---|---|---|
| SC | 600.0 | $168.00 |
Running Freight Through South Carolina
Port of Charleston Drayage
The Port of Charleston is one of the busiest and fastest-growing container ports on the East Coast, and drayage runs moving containers inland to warehouses along I-26 make up a steady share of South Carolina's commercial truck traffic.
Weigh Stations on I-95 and I-26
South Carolina runs fixed weigh stations at multiple points along I-95 and I-26, and the South Carolina Highway Patrol supplements them with mobile enforcement, so carriers moving port freight inland or running the I-95 corridor should expect regular weight and credential checks.
Hurricane Season Along the Coast
Coastal South Carolina, including the freight-heavy area around Charleston, faces real hurricane risk from June through November, with storms capable of triggering evacuation traffic patterns and road closures. Carriers running the coast during hurricane season should track storm forecasts as closely as delivery schedules.
IFTA and Trucking in South Carolina: What to Know
South Carolina sits between two of the busiest freight corridors on the East Coast, with I-95 running north to south and I-26 and I-20 feeding traffic inland from the Port of Charleston, one of the fastest-growing container ports in the country. Drayage and intermodal freight from the port mix with long-haul I-95 traffic, and hurricane season along the coast adds a seasonal planning layer that carriers running the Southeast corridor need to account for every year.
IFTA Filing for South Carolina Miles
South Carolina participates in IFTA along with every other member jurisdiction, so a carrier based outside the state reports South Carolina miles and any fuel purchased there on their normal quarterly return through their base state rather than filing separately with South Carolina. Because a meaningful share of the state's truck traffic is drayage moving containers away from the Port of Charleston, carriers running those short repositioning routes should still track the miles carefully, since even short hauls add up across a quarter.
Weigh Stations and Highway Patrol Enforcement
South Carolina operates fixed weigh stations along its major interstates, with a concentration on I-95 and I-26 given how much freight moves between the coast and the interior. Trucks should expect to pull in whenever a station is open and signage indicates it.
The South Carolina Highway Patrol also runs mobile enforcement and roadside safety checks throughout the state, and carriers moving port containers inland should keep bills of lading and permits on hand, since intermodal freight sometimes draws extra attention at inspection points.
Port Drayage and Oversize Permits
The Port of Charleston has grown quickly, and container volume moving inland by truck has grown with it, so I-26 between Charleston and Columbia sees consistent drayage traffic alongside regular long-haul freight.
South Carolina issues oversize and overweight permits through its Department of Transportation, and carriers hauling specialized freight, whether that's port related heavy equipment or agricultural loads, should confirm permit requirements before the trip since routes through downtown Charleston and other historic areas carry additional restrictions.
Hurricane Season and Coastal Weather
South Carolina's coastline faces a real hurricane season that typically runs from June through November, and a storm approaching the coast can trigger mandatory evacuation orders that reverse interstate traffic flow or close routes entirely with only a few days of notice. Inland areas near the Upstate region, closer to the Blue Ridge foothills, see far less hurricane exposure but can pick up occasional winter ice storms. Carriers running South Carolina routes during hurricane season should build flexibility into their schedules and watch coastal forecasts as closely as they would any other operational risk.
Other Southeast States
Carriers Running South Carolina Freight
“Port freight out of Charleston keeps me busy, but the drayage math still surprises drivers who haven't run it before. Short hauls add up fast on a quarterly IFTA return.”
“I've learned to watch the tropics as closely as my dispatch board once hurricane season starts. A storm off the coast can rewrite my whole week's routing.”