If your business ships freight between Canada, Mexico, and the United States, you’ve likely heard the term PAPS number. Whether you’re moving full truckloads, expedited freight, or specialized shipments, understanding PAPS can help prevent costly border delays and keep your freight moving smoothly.

At Transport ATC, we work with shippers across North America and understand how important efficient cross-border transportation can be. Here’s what you need to know about PAPS numbers and how they impact freight moving into the United States.

What Is a PAPS Number?

PAPS stands for Pre-Arrival Processing System.

A PAPS number is a shipment control number used by U.S. Customs and Border Protection (CBP) to identify commercial shipments entering the United States by truck. The system allows customs officials to review shipment information before the truck arrives at the border, helping streamline the clearance process.

Without the proper PAPS documentation, freight can face delays, inspections, or even rejection at the border.

Why Is a PAPS Number Important?

Cross-border freight moves quickly when everyone involved has the correct information.

A PAPS number helps:

• Identify the carrier transporting the freight
• Connect customs paperwork to the shipment
• Allow CBP to review cargo before arrival
• Reduce border crossing delays
• Improve efficiency for carriers and shippers

For businesses relying on just-in-time deliveries or time-sensitive freight, proper customs processing is essential.

How Does the PAPS Process Work?

The PAPS process begins before the truck reaches the border.

Step 1: The Carrier Assigns a PAPS Number

The transportation carrier assigns a unique PAPS number to the shipment.

This number is tied to:

• The carrier
• The shipment
• Customs entry documentation

Step 2: Information Is Sent to the Customs Broker

The PAPS number is provided to a customs broker, who prepares the required documentation for U.S. Customs.

The broker submits entry information to CBP before the shipment arrives at the border.

Step 3: The Carrier Files an eManifest

The carrier submits an electronic manifest containing shipment details and the PAPS number.

This allows CBP to match the shipment information with the broker’s customs entry.

Step 4: The Freight Arrives at the Border

When the truck arrives, customs officials review the shipment information.

If everything has been submitted correctly, the freight can often move through the border more efficiently.

If information is missing or incorrect, delays may occur.

What Information Is Required?

Cross-border freight shipments often require several documents in addition to the PAPS number.

Common documentation includes:

• Commercial invoice
• Bill of lading
• Packing list
• Customs entry documentation
• Tax identification information
• Product classification information
• USMCA documentation (when applicable)

Accurate paperwork is critical for maintaining transit schedules and avoiding unnecessary delays.

PAPS vs. PARS: What’s the Difference?

Many shippers confuse PAPS with PARS because both systems deal with border crossings.

PAPS

Used for commercial freight entering the United States.

PARS

Used for commercial freight entering Canada.

While the systems serve similar purposes, they are managed by different governments and require different documentation.

If your company regularly ships freight in both directions, it’s important to ensure the correct system is used for each shipment.

Common Causes of Border Delays

Even experienced shippers can encounter customs issues from time to time.

Some common problems include:

• Incorrect PAPS numbers
• Missing customs documentation
• Incomplete commercial invoices
• Errors on the eManifest
• Product classification discrepancies
• Missing USMCA certificates

Working with experienced transportation providers and customs brokers can help minimize these risks.

How Cross-Border Freight Continues to Grow

Trade between the United States, Canada, and Mexico continues to play a significant role in North American supply chains.

Manufacturers, distributors, retailers, and industrial companies rely on trucking to move goods efficiently across borders every day.

As supply chains become increasingly interconnected, understanding customs procedures like PAPS is more important than ever.

How Transport ATC Helps Manage Cross-Border Freight

At Transport ATC, we understand the complexities of cross-border transportation. Whether you’re moving full truckloads, expedited freight, flatbed shipments, or specialized cargo, proper coordination is essential to keeping freight moving.

Our team helps customers navigate transportation challenges while providing reliable communication, visibility, and support throughout the shipping process.

Final Thoughts

A PAPS number may seem like a small detail, but it plays a major role in successful cross-border freight transportation. By helping U.S. Customs identify and process incoming shipments, PAPS helps reduce delays and keeps freight moving efficiently.

For companies shipping goods between Canada, Mexico, and the United States, understanding how the PAPS process works can help improve transit times, reduce complications, and support a smoother transportation experience.

If your business needs reliable cross-border freight solutions, Transport ATC is here to help.