ACE and ACI Electronic Manifest Filing for Auto Transport Carriers

ACE (Automated Commercial Environment) and ACI (Advance Commercial Information) are the electronic manifest filing systems required for cross-border trucking into the United States and Canada respectively. For auto transport carriers moving vehicles across the US–Canada border, both systems are mandatory — ACE governs US Customs and Border Protection (CBP) entries, while ACI is administered by the Canada Border Services Agency (CBSA). Filing must happen before the truck reaches the port of entry: ACE requires submission at least 1 hour prior to arrival at the border for highway carriers, and ACI requires at least 1 hour for most highway shipments as well. Missing or late filings can result in the driver being turned back, cargo holds, and fines starting at CAD $2,000 on the Canadian side.

Auto transport carriers face a specific wrinkle that general freight carriers do not: each vehicle on the trailer is a separate commodity with its own VIN, year, make, model, and declared value. A nine-car load means nine line items on the manifest, each of which must match the bill of lading exactly. This guide walks through what each system requires, how to file correctly, and how modern fleet management software eliminates the paperwork bottleneck that causes most border delays.

ACE for US-Bound Auto Transport (FMCSA and CBP Requirements)

ACE eManifest is the CBP portal that every commercial truck driver must file before crossing into the United States. As an auto transport operator, you are responsible for three components of the ACE filing: the carrier record, the driver record, and the shipment (cargo) record. All three must be submitted and receive a "Proceed" response from CBP before the driver leaves for the border.

Carrier and Driver Records

Your company must hold a valid SCAC (Standard Carrier Alpha Code) — a four-letter identifier issued by the National Motor Freight Traffic Association (NMFTA) for an annual fee of approximately USD $100. Without a SCAC, you cannot file ACE manifests. Drivers must be enrolled in FAST (Free and Secure Trade) or at minimum have a NEXUS card or valid passport with a US work authorization. Your DOT number and FMCSA operating authority (MC number) must be tied to your carrier profile in ACE.

Vehicle-by-Vehicle Cargo Entries

Each vehicle on the load must be declared individually. Required fields for each unit include:

• VIN (17-character Vehicle Identification Number)
• Year, make, and model
• Declared value in USD
• Harmonized Tariff Schedule (HTS) code — 8703 for passenger cars, 8704 for trucks/vans
• Country of manufacture
• Shipper name and address (the dealer, auction house, or private seller)
• Consignee name and address (the receiving dealer or buyer)

The declared value should match the purchase invoice or auction receipt. CBP cross-references values against market data and will flag vehicles declared significantly below trade value. Undervaluing to reduce potential duty exposure is considered customs fraud — do not do it.

Timing and Response Codes

Submit at least 1 hour before arrival. CBP will return one of three responses: Proceed (clear to cross), Do Not Load (stop — do not move the cargo), or Exam (expect a secondary inspection). If you receive a Do Not Load after the vehicle is already on your trailer, you must hold at a facility and contact CBP directly. Most carriers building ACE filing into their dispatch workflow — rather than doing it at the truck stop the night before — avoid 90% of Do Not Load responses because errors get caught before the driver is in transit.

ACI for Canada-Bound Auto Transport (CBSA Requirements)

ACI eManifest is the Canadian equivalent, administered by the CBSA. The structure mirrors ACE but uses different identifiers and has its own compliance regime. Canadian carriers need a Business Number (BN) issued by the CRA, and if you are a US carrier bringing vehicles into Canada, you need a Non-Resident Importer (NRI) arrangement or must work with a licensed Canadian customs broker.

What Canadian Carriers Need Before Filing

• CBSA carrier code — a unique identifier for your company in the ACI system, obtained directly from CBSA
• CRA Business Number (BN) — 9-digit number assigned when you register your business with the CRA
• NSC (National Safety Code) number — required for commercial carriers operating in Canada; issued by your provincial carrier safety authority
• CVOR certificate (Ontario) or equivalent provincial safety fitness certificate — provincial-level operating authority separate from NSC
• Driver's FAST card or equivalent trusted trader enrollment (recommended, not always mandatory, but dramatically speeds up crossings)

ACI Cargo Data for Vehicle Shipments

Like ACE, ACI requires per-vehicle entries. Canadian import classification uses the same HS tariff codes (8703/8704) but values must be declared in CAD. Vehicles imported into Canada by a registered dealer may qualify for reduced or zero duty under CUSMA (formerly NAFTA) if the vehicle meets the Rules of Origin requirements — typically 75% North American content for passenger vehicles. Your customs broker or the CBSA website provides the current CUSMA tariff treatment table. Vehicles that do not qualify for CUSMA treatment are subject to a 6.1% import duty on the declared value.

The 1-hour pre-arrival filing window is the same as ACE for highway shipments. CBSA can extend or shorten this window at specific ports of entry — check the CBSA ACI portal for port-specific rules before routing a new lane.

The Most Common Filing Errors — and How to Avoid Them

Both CBP and CBSA publish compliance statistics and the top error categories are consistent year over year. For auto transport specifically:

The VIN transposition error is the single most common cause of border delays for auto transport. A human typing a 17-character VIN from a paper BOL into a web form has roughly a 3–5% per-character error rate under time pressure. On a nine-car load that is statistically one mistake per load. Software that pulls the VIN directly from your order record — the same VIN the customer entered when booking — eliminates this entirely. Compared to managing this manually in spreadsheets, the difference in border performance is significant.

Filing Methods: Customs Broker vs. Self-Filing

You have two practical options for submitting ACE and ACI manifests:

Using a Licensed Customs Broker

A customs broker handles the filing on your behalf. Brokers charge per-entry fees that typically range from USD $35–$75 per manifest for highway entries. For a carrier running 5–10 cross-border loads per week, that is USD $9,000–$19,500 per year in broker fees alone, before any amendment or correction charges. Brokers add a communication lag — you need to send them the load details, they file, and any errors require back-and-forth. Most brokers have turnaround SLAs of 2–4 hours, which means your dispatch needs to finalize cross-border loads well before the driver departs.

Self-Filing Through ACE and ACI Portals

Both CBP and CBSA offer free web portals for self-filing: the ACE Secure Data Portal and the CBSA ACI eManifest portal. Self-filing eliminates broker fees but requires your dispatcher or office staff to log into each portal, manually enter all cargo data, and monitor for responses. For a high-volume carrier this becomes a full-time task. The portals also do not integrate with your dispatch or TMS system — every piece of data must be re-keyed.

Integrated Filing via Fleet Management Software

The third option — increasingly the standard for growing carriers — is fleet management software that connects to ACE and ACI via certified EDI or API integration. Order data entered once flows directly to the manifest filing, VINs are validated against NHTSA's VIN decoder before submission, and response codes come back into the same dashboard your dispatcher is already watching. See the AutoHauler AI features overview for how this works in practice, or review the guide to evaluating fleet management software if you are currently comparing options.

Cross-Border Load Documentation Checklist

Every cross-border auto transport load should have the following documents completed and on file before the driver departs — not just filed electronically, but physically present in the cab or accessible digitally:

• Bill of lading with VIN, year, make, model, condition, and declared value for each vehicle
• ACE or ACI manifest confirmation number and Proceed response (screenshot or printout)
• Commercial invoice or auction receipt supporting the declared value of each vehicle
• Proof of CUSMA origin (for Canada-bound loads claiming preferential tariff treatment)
• Vehicle title or transfer document (especially for private-party vehicles)
• Driver's FAST card, NEXUS card, or passport
• Carrier's SCAC code confirmation (ACE) or CBSA carrier code (ACI)
• Current commercial vehicle insurance certificate valid in the destination country
• For Canadian carriers: CVOR or NSC certificate and current safety fitness certificate — see also the FAQ for common questions about Canadian carrier compliance documentation

Drivers who arrive at the border with incomplete documentation are turned back regardless of whether the electronic manifest was filed correctly. The manifest clears the cargo; the physical documents clear the driver and the carrier. Both must be in order.

IFTA and Cross-Border Fuel Reporting

Cross-border operations add a layer of IFTA (International Fuel Tax Agreement) reporting complexity for Canadian carriers. Every kilometer driven in each jurisdiction must be logged and fuel purchases reconciled per province and state. Canadian auto transport operators running US routes should review the IFTA compliance guide for Canadian auto haulers to ensure their fuel tax reporting keeps pace with their border activity. Under-reported IFTA miles are one of the most common triggers for a CVOR audit in Ontario and a DOT audit in US border states.

Getting Your Cross-Border Operation to Run Smoothly

The carriers who move cross-border loads without border delays are not doing anything complicated — they have removed the manual re-entry steps from their workflow. When the same VIN, shipper, and consignee data that lives in your order record automatically populates the manifest, the error rate drops to near zero. When the Proceed response comes back into your dispatch dashboard, your driver gets a green light without anyone making a phone call. And when CBSA or CBP asks for records during an audit, everything is timestamped and searchable rather than scattered across email threads and spreadsheet tabs.

If your cross-border operation still relies on manual portal entry or a customs broker for every load, it is worth calculating what that costs annually in fees, delay time, and staff hours before your next busy season. Start a free trial of AutoHauler AI to see how integrated ACE/ACI filing fits into your dispatch workflow, or review our pricing to find the plan that matches your cross-border volume.