What Is a SCAC Code in Shipping?

A SCAC code (Standard Carrier Alpha Code) is a unique four-letter identifier assigned to transportation companies operating in the United States. Issued by the National Motor Freight Traffic Association (NMFTA), SCAC codes are used to track, identify, and manage carriers involved in domestic and international freight movements—whether by truck, rail, ocean, or air.

If you’re shipping in or out of the U.S., your freight forwarder, customs broker, or carrier is using Standard Carrier Alpha Codes behind the scenes to ensure your cargo is properly documented and traceable in regulatory systems like ACE, AMS, and EDI.

Why SCAC Codes Matter for Importers and Exporters

In the world of logistics, data accuracy and regulatory compliance are critical. Standard Carrier Alpha Codes act like a passport for freight carriers—enabling seamless communication between shippers, carriers, ports, and government agencies.

They are required for:

Filing entries with U.S. Customs and Border Protection (CBP)
Submitting Automated Manifest System (AMS) data for ocean and air shipments
Completing bill of lading and shipping documentation
Filing e-manifests for truck and rail carriers at border crossings
Transmitting Electronic Data Interchange (EDI) records
Registering carriers with major shippers and 3PLs

Common Use Cases of SCAC Codes:

A steamship line like Maersk has the SCAC code: MAEU
A domestic trucker like J.B. Hunt might use: JBHT
Shapiro, as a freight forwarder and NVOCC, may file using its own registered SCAC code

Every link in your supply chain—from port terminals to customs entry software—relies on SCAC codes to accurately route, release, and reconcile your shipments.

Who Needs a SCAC Code?

You need a SCAC code if you are:

A motor carrier crossing U.S. borders or operating interstate
A freight forwarder, NVOCC, or ocean carrier filing AMS data
A customs broker or importer submitting entries via ACE that include carrier data
A trucking company needing to participate in government programs like FAST or PIP

Even if you’re not applying for your own SCAC, knowing your carrier’s SCAC ensures smoother documentation, avoids delays, and improves shipment visibility.