If you haul freight across the US-Canada border, knowing how to file an ACE eManifest is not optional -- it is a legal requirement enforced by US Customs and Border Protection (CBP). The ACE (Automated Commercial Environment) manifest filing system replaced the old paper-based process years ago, and carriers who fail to file correctly face delays, penalties, and even denied entry. This guide walks you through the entire ACE manifest filing process from start to finish.
What Is the ACE eManifest?
ACE is the electronic system that CBP uses to process all commercial imports entering the United States. When a truck crosses from Canada into the US, the carrier must transmit shipment, conveyance, and crew data to CBP through the ACE portal before arriving at the border.
The eManifest is essentially a digital declaration that tells CBP:
- Who is driving the truck
- What vehicle and trailer are being used
- What cargo is on board
- Where it is coming from and where it is going
- Which broker is handling customs clearance
Without a properly filed ACE eManifest, your truck will not be cleared to enter the United States.
Who Needs to File an ACE eManifest?
Any carrier transporting commercial goods into the US by highway is required to file. This includes:
- Canadian carriers hauling loads southbound into the US
- US carriers returning with goods picked up in Canada
- Owner-operators crossing with commercial freight
- Freight brokers and 3PLs who arrange cross-border shipments on behalf of carriers
Even if your truck is crossing empty but has previously carried commercial cargo, you may still need to file depending on the circumstances.
Step-by-Step: How to File Your ACE eManifest
Step 1: Obtain Your ACE Portal Account
Before you can file anything, your carrier must be registered in the ACE portal. You will need your SCAC code (Standard Carrier Alpha Code) and your CBP-assigned carrier code. Registration is done through the CBP website and can take several business days.
Step 2: Gather Required Data
Every ACE eManifest requires three core components:
- Conveyance data -- truck and trailer details including license plate numbers, VIN, and country of registration
- Crew data -- driver name, date of birth, citizenship, travel document number (FAST card, passport, or CDL with FAST enrollment)
- Shipment data -- shipper name and address, consignee name and address, commodity description, weight, piece count, and the customs broker's entry number or PAPS barcode
Step 3: Transmit the eManifest
You must transmit the completed eManifest to CBP at least one hour before the truck arrives at the US port of entry. CBP recommends filing even earlier to allow time for corrections if something is rejected.
Step 4: Receive Your CBP Response
After transmission, CBP will send back a status response. The statuses you may see include:
- Accepted -- your manifest has been received and is valid
- On Hold -- CBP needs more information or is reviewing the shipment
- Rejected -- there is an error that must be corrected before the truck can cross
Step 5: Arrive at the Border
Once your eManifest shows an accepted status, the driver can proceed to the port of entry. The driver presents their identification, and CBP matches it against the filed manifest electronically.
Common ACE eManifest Filing Mistakes
Even experienced carriers make errors that cause unnecessary delays. The most frequent mistakes include:
- Mismatched driver information -- the name or document number on the manifest does not match what the driver presents at the booth
- Wrong trailer or license plate numbers -- especially common when trailers are swapped at the last minute
- Late filing -- submitting less than one hour before arrival, which can result in the truck being turned away
- Missing or incorrect PAPS numbers -- the barcode provided by the customs broker must be accurate and already transmitted to CBP
- Incomplete commodity descriptions -- vague descriptions like "general merchandise" will trigger holds or rejections
How TruckerPro Border Simplifies ACE Filing
Filing through the CBP portal directly can be time-consuming and error-prone, especially if you are managing multiple trucks and shipments daily. TruckerPro Border streamlines the process by letting you:
- Save driver, truck, and trailer profiles so you never have to re-enter the same data
- Validate all fields before submission to catch errors that would cause CBP rejections
- Track manifest status in real time so you know the moment a shipment is accepted, held, or rejected
- File from any device -- desktop, tablet, or phone -- without needing to navigate the CBP portal directly
Whether you are a single owner-operator or managing a fleet of hundreds, TruckerPro Border takes the complexity out of ACE eManifest filing so you can focus on moving freight. Start filing smarter at [border.truckerpro.ca](https://border.truckerpro.ca).