South Carolina trucking requirements for hot shot & box truck operators

Qualified trucks based in South Carolina need IRP apportioned plates and an IFTA license from South Carolina. It has no separate weight-distance tax.

What a small carrier based in or running through South Carolina (SC) should check, with links to official sources.

Fuel tax & registration

IFTA: qualified motor vehicles (two axles and over 26,000 lb, three or more axles, or combination over 26,000 lb) based in South Carolina that travel to other member jurisdictions get an IFTA license and decals from South Carolina and file quarterly fuel-tax returns. Find the South Carolina contact in the IFTA jurisdiction directory.

IRP: apportioned plates for the same qualified vehicles are issued by South Carolina as your base jurisdiction. See the IRP jurisdiction contacts.

Weight-distance taxes

South Carolina is not one of the four states with a separate weight-distance tax (Kentucky, New Mexico, New York, Oregon).

Size & weight

On the Interstate System, federal law caps gross vehicle weight at 80,000 lb, 20,000 lb single axle and 34,000 lb tandem (23 CFR 658.17), subject to grandfathered state exceptions. South Carolina sets limits on other roads and issues oversize/overweight permits – see FHWA state permit contacts.

Federal registrations

Interstate carriers need a USDOT number and, if for-hire, MC authority, BOC-3 and UCR – use our authority & insurance checker. Intrastate rules vary; contact South Carolina through the FMCSA field office and the South Carolina DOT.

Look up a South Carolina carrier

Use the DOT/MC lookup to check any carrier or broker partner.