A8A In-Bond Routing Explained: How Bonded Carriers Move Freight Between Warehouses

Justin K

Operations & Content Manager

BorderPrint — Cross-border shipping documents & compliance supplies for highway carriers and brokers.

There is a moment in a lot of Canada-bound trips that dispatch teams quietly dread: the load does not clear at the first port. Instead of a clean release at the booth, the freight has to keep moving — inland, under bond, to a warehouse where it will sit until customs says it can go to the consignee. That is in-bond routing, and the document that holds the whole thing together is the A8A cargo control document.

In-bond routing is not exotic. It happens every day at Windsor, at the Port of Montreal, and increasingly across the brand-new Gordie Howe International Bridge, which opened to its first crossers on July 27 and adds a direct highway-to-highway link between Ontario's Highway 401 and Michigan's I-75. More lanes and more inland-destined freight mean more A8A movements — and more chances to get the routing wrong.

1) What in-bond routing actually means

Not every shipment that enters Canada is released at the first point of arrival. Sometimes the carrier, importer, or broker elects to move the goods inland — to an inland CBSA office, a sufferance warehouse, or a bonded warehouse — before the final release or accounting happens. While the goods are in that state, they are in-bond: physically inside Canada, but still under CBSA control and not yet cleared for delivery to the consignee.

The core rule that governs everything downstream is simple to state and easy to underestimate: in-bond goods cannot be delivered to the consignee until the required release or accounting has been completed. The freight can move, it can be stored, it can be transferred — but it cannot legally reach its final destination until customs says so. The A8A is the instrument CBSA uses to keep track of that controlled movement from the moment the goods leave the port until they are acquitted at their inland destination.

If you are used to the release-at-the-booth world of PARS, in-bond routing is the opposite mental model. With PARS you are trying to get released at the border. With an A8A you are deliberately choosing not to release at the border, and instead moving the still-controlled freight to a place where the release will happen later.

2) Who is allowed to move freight in-bond

This is the question that stops a lot of otherwise-simple moves. CBSA's policy on the importation and transportation of goods (Memorandum D3-1-1) is clear that only bonded carriers and freight forwarders that have filed the required security may move in-bond goods between points in Canada. In other words, moving freight under bond is a privilege tied to security on file with CBSA — it is not something any carrier can do simply because they have a truck and a trailer.

For a fleet, that has practical consequences:

• If your operation has filed security and holds bonded-carrier status, you can raise the A8A and move the goods yourself.
• If it has not, the in-bond leg has to be handled by a party that has — often a bonded carrier or a freight forwarder acting as the responsible party on the cargo control document.
• Either way, the responsible party's identity and code belong on the A8A, because that is who CBSA holds accountable for the controlled movement.

3) Sufferance vs bonded warehouse: the distinction that trips people up

Ask three people in a warehouse office what the difference between a sufferance warehouse and a bonded warehouse is, and you may get three different answers. The distinction matters for A8A routing because it determines where the goods are allowed to go and what happens when they arrive.

Sufferance warehouse

A sufferance warehouse is a privately owned facility licensed and regulated by CBSA for the short-term holding of goods that have not yet been released. Think of it as a designated, secure waiting room: imported freight sits there while the importer or broker completes the paperwork, pays any duties and taxes, or waits out an examination. CBSA's rules on these facilities are set out in Memorandum D4-1-4. In practice, in-bond routing usually means delivering the goods to the applicable primary sufferance warehouse serving the destination — which is exactly where an A8A move terminates.

Bonded warehouse

A bonded warehouse, by contrast, is used for longer-term, duty-deferred storage. Goods can sit under bond without duty and GST being paid, and duty is assessed when they eventually leave the warehouse into the Canadian market. It operates under a different licensing regime and a different set of rules than a sufferance warehouse.

CBSA policy on the movement side (D3-1-1, paragraphs 54 to 56) reinforces the general expectation: in-bond goods are to be delivered to the applicable primary sufferance warehouse unless a specific exemption applies. When in doubt, treat the primary sufferance warehouse as the default destination and confirm anything unusual with the broker.

4) The in-bond routing sequence, step by step

Here is the sequence that most cleanly-run in-bond moves follow. The details vary by lane and by broker, but the skeleton is consistent.

Step 1 — Decide (or discover) that the load moves in-bond

Sometimes the in-bond decision is made in advance by the importer or broker; sometimes it becomes necessary because a release could not be completed at the first port. Either way, the trigger is the same: the goods need to move inland while still under CBSA control.

Step 2 — Raise the A8A at origin

The responsible bonded party creates the A8A cargo control document with a valid cargo control number (CCN), the correct destination and sub-location code, and a legible barcode. The CCN on the A8A is the thread that everything else hangs on — it needs to match the story the rest of the trip packet tells.

Step 3 — Move the goods under bond

The bonded carrier transports the freight to the destination named on the A8A. During this leg the goods remain in-bond: they are moving, but they have not been released, and they cannot be delivered to the consignee.

Step 4 — Deliver to the sufferance warehouse

At destination, the goods are delivered to the applicable primary sufferance warehouse (or the authorized CBSA office). The receiving facility acknowledges the arrival of the in-bond goods against the A8A's cargo control number. This is the hand-off point where control transfers from the moving carrier to the holding facility.

Step 5 — Await release, then acquit the A8A

Once the goods are received, the release or accounting process runs its course. Critically, the A8A then needs to be acquitted — reported and closed — so that CBSA's records show the controlled movement was completed as authorized. An A8A that arrives but is never acquitted is a loose end that comes back to bite the responsible party.

5) Closing (acquitting) the A8A correctly

If there is one part of in-bond routing that carriers underestimate, it is the closing. Raising an A8A feels like the "real" work because it happens at origin under time pressure. But an A8A is only as good as its acquittal. CBSA tracks the document from the moment it is raised, and it expects to see that controlled movement completed at an authorized destination.

When the A8A is acquitted correctly, the record shows a clean, complete movement: goods left the port under bond, arrived at the named warehouse, and were accounted for. When it is not, the document stays open — and open cargo control documents are exactly the kind of thing that generates follow-up, holds on subsequent movements, and administrative penalties, on top of the warehouse demurrage that piles up while everyone figures out where the paperwork stalled.

• Confirm the receiving warehouse actually recorded the arrival against your CCN — do not assume it happened.
• Make sure the sub-location code on the A8A matches the facility that received the goods.
• Reconcile the A8A's CCN with the cargo control numbers you reported elsewhere in the trip (for example on your ACI eManifest), so the same shipment tells one consistent story.
• Keep a copy of the acquitted document with the trip packet in case CBSA asks later.

6) The A8A(B) as a self-printed cargo control document

CBSA's in-bond policy (D3-1-1, paragraph 58) recognizes that the A8A(B) form may be used as a cargo control document for certain reporting scenarios, and that carriers can print their own A8A(B) documents to the published specifications rather than relying solely on pre-supplied government stock. That flexibility is useful for high-volume operations that would rather keep a consistent, in-house supply than chase forms.

It is worth being precise about what that means. The A8A(B) itself is a free government form — CBSA does not charge for the right to use it, and neither does anyone else. What a supplier like BorderPrint provides is blank, correctly-formatted document stock: multi-part carbon-copy cargo control documents printed to spec, so your dispatch team has a reliable, legible supply on hand. The value is in the printing and the consistency, not in the form, and certainly not in any suggestion that the document confers eligibility or files anything on its own. It does not. It is a control document that has to be filled in, moved with the goods, and acquitted by the responsible party.

7) The failure modes that cause inland headaches

Most in-bond problems are not exotic customs disputes. They are ordinary data and process failures that only reveal themselves inland, when the freight is far from the port and the clock is running.

1) Wrong or unauthorized destination

Routing the goods to a facility that is not the applicable authorized destination — or to the right facility with the wrong sub-location code — leaves the A8A unable to close cleanly. Confirm the destination and its code before the goods leave.

2) Illegible or mismatched barcode / CCN

If the barcode will not scan, or the CCN on the A8A does not match the numbers reported elsewhere in the trip, the warehouse and CBSA end up doing manual reconciliation. That is slow, and slow inland means demurrage.

3) Moving in-bond without standing

Accepting an in-bond leg when the carrier on the document has not filed security is a non-starter. Verify bonded status before you commit the truck.

4) Delivering but not acquitting

As covered above: delivery is not the finish line. An unacquitted A8A is an open liability.

5) Treating the A8A as separate from the rest of the packet

The A8A does not live alone. Its CCN has to reconcile with the cargo control numbers on your advance filings and commercial documents. When those numbers disagree, the officer sees two stories and slows everything down.

8) BorderPrint A8A(B) in-bond document stock

A8A(B) In-Bond Cargo Control Document

Blank, multi-part carbon-copy cargo control document stock printed to CBSA's published specification — so your dispatch team always has a legible, consistent A8A(B) supply on hand for in-bond moves.

• Multi-part carbon copy for the carrier, warehouse, and CBSA copies
• Printed to spec so barcodes and fields sit where officers expect them
• Keeps a reliable in-house supply for high-volume in-bond routing

Browse the full range in the A8A cargo control documents collection.

9) How A8A fits with your other border documents

An A8A rarely rides alone. On an in-bond trip it shares the packet with the advance data you transmitted and whatever release documents apply, and every one of those pieces has to reference the same shipment consistently. The officer at any checkpoint is effectively cross-checking stories: the advance filing, the cargo control document, and the physical paperwork in the cab.

ACI eManifest

Your Canada-bound advance data and your A8A both hang off cargo control numbers. If the CCN on the A8A and the CCN on your ACI filing disagree, you will be untangling it inland. Keeping those numbers aligned is the single highest-leverage habit for clean in-bond routing — and it is why the same discipline that prevents rejected eManifest messages also prevents open A8As.

PARS release

Some trips combine an in-bond movement with a PARS release for part of the load. When that happens, the packet has to make it obvious which goods are being released at the border and which are moving under bond — and the barcodes for each have to be clean and distinct.

Related reading:

• ACI eManifest errors (fixing rejected CBSA messages)
• PARS barcode labels (Canada-bound release)
• Gordie Howe Bridge opens: what it means for Windsor-Detroit trucking

BorderPrint guides on this topic:

• How to Complete a CBSA A8A Form — field-by-field walkthrough for in-bond cargo control
• Canada CBSA Requirements — the full Canada-bound requirements walkthrough
• BorderPrint Resource Center — every guide and article indexed in one place

10) FAQ