Canada-US Cross-Border Trucking: ACI eManifest, ACE, PARS and PAPS Explained

Every commercial truck crossing between Canada and the United States has to clear two separate steps, and most border delays come from confusing them. The first is the carrier's advance cargo and conveyance data: ACE truck e-manifest into the US, ACI eManifest into Canada. The second is the release request from the importer or its customs broker: PAPS into the US, PARS into Canada. The manifest tells the border authority what is on the truck; the release request tells it how the goods should be declared and cleared. Filing one does not do the other's job. As of October 2026, both countries expect the carrier's data to be in the system no later than one hour before the truck reaches the border.

This guide covers the filings, the codes that tie them together, the FAST trusted-trader lanes, the bond rules, the origin claim under the North American trade agreement, and the mistakes that leave a truck sitting at the booth. It sits beside our guides on Mexico to USA cross-border trucking and the general customs clearance process.

The two filings every cross-border truck needs

The easiest way to keep them straight is to ask who files and what for.

A common misconception is that a filed manifest clears the freight. It does not. The manifest is the carrier's report. Release, duty and taxes still depend on the importer's entry or release request. A truck with a perfect eManifest and no PARS or PAPS data behind it will usually be referred or held.

Advance electronic filing: the timing rules

Into the United States. Under 19 CFR 123.92, the carrier of an inbound truck with commercial cargo must send the cargo information through a CBP-approved electronic data interchange system. The rule is written as no later than either 30 minutes or 1 hour before the truck reaches the first US port of arrival. CBP's own guidance for the rule explains the split: one hour in general, and 30 minutes for shipments that qualify for FAST. The clock runs to the time CBP receives the data, not the time the carrier sent it. Carriers identify themselves with a Standard Carrier Alpha Code (SCAC), which is issued through the National Motor Freight Traffic Association.

Into Canada. The CBSA's memorandum D3-4-2 (dated 12 November 2025) says the cargo and conveyance data must be validated within 30 days and no later than one hour before arrival at the first point of arrival. Data that reaches the CBSA with less than an hour to spare is still accepted, but the system issues an insufficient-review-time warning and administrative monetary penalties can apply. That memorandum does not set out a separate 30-minute FAST timeframe, so do not assume the US 30-minute figure applies on the Canadian side. Plan on one hour in both directions unless the CBSA or your broker tells you otherwise.

Carrier codes and the cargo control number

The codes are where paperwork most often breaks, because the carrier's data and the broker's release request must quote the same identifier.

• Canada: carrier code and CCN. Every carrier crossing into Canada needs its own CBSA-assigned carrier code. The cargo control number (CCN) is the carrier code followed by a unique reference number, and the carrier code must always come first. The code must belong to the legal entity that physically arrives at the border, and CCNs and conveyance reference numbers cannot be reused for three years.
• United States: SCAC and pro-bill. The PAPS barcode carries the carrier's SCAC plus a unique identifier, typically the carrier's pro-bill number at the northern border. CBP guidance describes the identifier as the four-character SCAC plus up to 12 alphanumeric characters.
• What happens without a code. CBP guidance allows first-time or one-time carriers to cross without a SCAC on a limited case-by-case basis, but still expects the entry data an hour ahead. In Canada, the CBSA's memorandum says every carrier crossing the border must obtain and use its own code, so an occasional or owner-operator carrier should apply well before the first trip.

PARS into Canada, and what CARM changed

PARS is a line-release option: the importer or its licensed customs broker submits the release request before the truck arrives, and a border services officer decides to release or refer the goods when the truck presents. Under CBSA memorandum D17-1-4 (15 December 2025), a PARS request can be sent up to 45 calendar days before the goods arrive at the office of release, or up to 40 days after they have been reported. The CCN on the carrier's cargo data must match the CCN quoted in the PARS request, and the sub-location code should match the one on the cargo documents. Labels for a PARS shipment show the letters PARS, either inside the CCN or printed beside it.

If the release request was never submitted (a failed PARS), the goods may not be released at the border. The carrier and the importer or broker can hold the truck at the first point of arrival until the request is processed, or move the goods in bond to an inland sufferance warehouse. For the CBSA's current service standard, it says it will process eligible electronic PARS requests submitted at least one hour before arrival.

The CARM programme changed who can use release before payment. Since the CBSA's new revenue system became the system of record on 21 October 2024, an importer cannot rely on a broker's financial security for release prior to payment; the importer must post its own security and hold a CARM account. According to the CBSA's Customs Notice 25-23, importers without release-prior-to-payment privileges lost the interim release options after the transition period ended on 20 May 2025. For a truckload, the practical point is that a new or occasional importer must be enrolled before the truck leaves, not at the booth. The full detail is in our guide to importing into Canada after CARM.

PAPS into the United States

PAPS is the US counterpart. The carrier attaches a barcode label to the shipping paperwork, bearing its SCAC and pro-bill number. The customs broker transmits the entry through CBP's Automated Broker Interface using that same identifier, and CBP matches the two when the truck reaches the booth. Because the data must be in CBP's system an hour ahead (30 minutes for FAST shipments), the carrier has to send the barcode details to the broker well before the border, not as the driver queues.

CBP's guidance on the advance-data rule describes penalties for a driver who arrives without timely electronic data and without a PAPS barcode or entry number. Who is the importer of record, and whether you need a broker at all, is covered in our broker guide.

FAST: what the trusted-trader lane actually needs

FAST (Free and Secure Trade) is a commercial-clearance programme with dedicated lanes at selected crossings. A misconception worth correcting: FAST is not a driver card you can buy to speed an ordinary shipment. It works only when the whole chain qualifies.

• Into the United States: CBP states that every link in the supply chain, from manufacturer to carrier to driver to importer, must be certified under C-TPAT. See our explainer on AEO and C-TPAT for what certification involves.
• Into Canada: The CBSA says carriers and importers must belong to Partners in Protection (PIP), or to the Customs Self Assessment (CSA) programme together with PIP. Canadian carriers are approved for FAST automatically once they hold those memberships, and there is no separate carrier application. The CBSA's carrier page was last modified in 2020, so check it for any later change.
• Drivers: The FAST card for drivers is valid for five years and carries a non-refundable US$50 processing fee (CBSA FAST page, last modified November 2021). Every person in the cab typically needs a valid card, or the truck uses the regular lane.

If any one link, the carrier, the driver or the importer, is not enrolled, the shipment goes through the standard lane with the one-hour filing rule. That is a normal outcome, not a failure.

Bonds, bills of lading and the other paperwork

• Importer bond (US). A US importer entering goods normally needs a customs bond, single-entry or continuous. See US customs bonds explained for how the amount is set.
• Carrier bond (Canada). A carrier without a bond must obtain release at the first point of arrival unless it posts a single trip bond, links the goods to a bonded carrier, or re-manifests them. The CBSA says security for a single trip bond is never less than CAD 1,000.
• Shipping documents. North American road freight typically moves on the carrier's own bill of lading (often called a pro-bill) rather than a convention document like the CMR used in Europe. The commercial invoice, the bill of lading and the PARS or PAPS details travel with the truck. Ask your carrier which document carries the barcode, since the CBSA specifically says the lead sheet should not be printed on an invoice or bill of lading.
• Less-than-truckload. Consolidated loads add a second layer: the freight forwarder handles secondary reporting for goods consolidated or deconsolidated in Canada, and every shipper on the trailer still needs its own release data. Our LTL quotes guide covers the commercial side.

Duty, tax and the CUSMA/USMCA origin claim

Goods that qualify as originating under the North American trade agreement (USMCA in the US, CUSMA in Canada) can enter at preferential duty rates, but only if the importer claims it and holds the proof. CBP accepts the certification of origin in any format that contains the nine minimum data elements in Annex 5-A. On the Canadian side the CBSA says the certification may be completed by the producer, exporter or importer, and that the importer must have it in hand when it makes the claim. The CBSA's older memoranda also describe a threshold of CAD 3,300 below which no certificate is needed for commercial goods, but those memoranda are marked as under review, so confirm the current figure.

Two cautions as of October 2026. First, origin claims do not cover every duty: additional US tariffs, such as those under Section 232, have applied regardless of a trade-agreement claim, and the tariff picture has been changing (see US tariffs in 2026 after the IEEPA ruling). Second, the agreement itself is in review. The US did not agree to extend it at the 1 July 2026 joint review, according to a Congressional Research Service report updated 29 September 2026, and it stays in force while talks continue. Canadian GST is generally collected on importation as well; ask your broker for the current rate and treatment of your goods.

Common causes of delay

• The PARS or CCN does not match. A typo, a different carrier code or a different sub-location code between the carrier's data and the release request leaves the truck unreleased.
• No carrier code or SCAC. A carrier that cannot identify itself in the system cannot link to the broker's data.
• Data filed late. Less than one hour triggers a warning in Canada and, in the US, a driver without timely data or a barcode risks a penalty and a stop.
• The importer is not enrolled. In Canada, a first-time importer without its own CARM account and security cannot use a broker's security to release before payment.
• Missing FAST pieces. One non-enrolled link, or one cardless passenger, sends the truck to the regular lane.
• Origin paperwork gaps. A USMCA or CUSMA claim without a proper certification is a rejected claim and full duty.

What to do next

1. Confirm the importer of record on each side and whether it already has a CARM account (Canada) or a customs bond (US).
2. Ask the carrier for its CBSA carrier code and its SCAC before booking, and whether it files ACE and ACI eManifest itself or through a service provider.
3. Agree who sends the PARS or PAPS details, in what format, and by when, with a buffer well beyond the one-hour minimum.
4. Decide whether FAST is realistic: check the carrier, the driver and the importer separately, and keep the standard lane as the plan.

If you need a carrier or customs broker for a Canada-US lane, more than 29,300 logistics companies are searchable by country and service in the CargoLinked directory, including firms listed in our Canada roundup. If you have a load to move, the public requests board lists freight that shippers have posted for forwarders to quote on directly.

This article is general information, not legal, tax or customs advice. Border rules, programme eligibility and tariffs change; confirm the current requirements with CBP, the CBSA or a licensed customs broker before you ship.