What Is a SCAC Code?

A SCAC Code—short for Standard Carrier Alpha Code—is a unique two-to-four letter identifier assigned to transportation companies operating in the United States. It is issued and maintained by the National Motor Freight Traffic Association (NMFTA) and is widely used across the logistics and supply chain industry.

In simple terms, the SCAC code is the official ID number for carriers, used in documentation, tracking, customs filings, and communication between shippers, freight forwarders, and U.S. government agencies.

Why SCAC Codes Are Important

SCAC codes are required for:

1. U.S. Customs and Border Protection (CBP) Filings

• Mandatory for AMS (Automated Manifest System) filings

• Required for ISF (Importer Security Filing) submissions

• Used in entries for ocean, air, truck, and rail shipments

2. Transportation & Freight Documentation

• Bills of lading

• Delivery orders

• Freight invoices

• Tracking systems

3. Identifying Carriers in EDI Systems

Electronic Data Interchange (EDI) relies heavily on SCAC codes to correctly identify carriers in automated logistics communications.

4. Government Contracts

Carriers working with the U.S. Government, including the Department of Defense (DoD), must have an active SCAC.

Who Needs a SCAC Code?

• Trucking companies

• Ocean freight carriers

• Rail carriers

• Air cargo companies

• Drayage providers

• Freight forwarders and NVOCCs (in some cases)

Any carrier moving cargo into, out of, or within the U.S. generally requires a SCAC code for regulatory compliance.

Examples of SCAC Codes

Each code is globally recognized and used throughout U.S. customs, port systems, and carrier networks.

SCAC Code vs. Other Carrier Identifiers

SCAC codes are specifically tied to U.S. logistics, customs, and freight management.

How SCAC Codes Are Used in China → USA Logistics

For importers shipping from China to the U.S.:

• The ocean carrier’s SCAC is required in AMS and ISF filings

• The trucking provider’s SCAC is needed for port drayage after arrival

• The NVOCC’s SCAC may appear on house bills of lading

• Many tracking systems require SCAC codes to trace U.S.-bound containers

Without a SCAC, carriers cannot legally or technologically participate in the U.S.-bound supply chain.

What Happens If a SCAC Code Is Missing or Incorrect?

• Customs filings will be rejected

• Shipments may be delayed or placed on hold

• Carriers may face penalties

• Freight forwarders cannot submit required manifests

• Tracking and EDI data may fail to process

Accuracy is critical in SCAC usage.

In Summary

A SCAC Code is a standardized, government-recognized identifier used to track and manage carriers in the U.S. transportation system. It is essential for customs filings, freight documents, and supply chain communication—especially for companies importing from China into the United States.