If there's one thing we've learned over years of reviewing customs documentation and clearing freight into Canada, it's this:

Most customs delays aren't caused by customs.

They're caused by paperwork.

A shipment can arrive on schedule, the carrier can do everything right, and the cargo can still sit because one document doesn't match another, a tariff classification needs clarification, or information is missing altogether.

The good news?

Most of these delays are preventable.

At StraitLink Global, reviewing documentation is part of the shipping process—not something we leave until the freight reaches the border.

Where We See Documentation Problems Most Often

Most customs issues come down to consistency.

The documents all exist.

They just don't tell the same story.

Some of the most common issues include:

• Commercial invoices that don't match the packing list.
• Missing or incomplete product descriptions.
• Incorrect HS classifications.
• Country of origin discrepancies.
• Missing permits or government certificates.
• Valuation errors.
• Missing manufacturer or importer information.
• Incomplete broker instructions.

One small difference between documents can trigger questions that delay release.

Five Documentation Mistakes That Slow Down Clearance

1. Product Descriptions That Are Too General

"Machine parts."

"Metal goods."

"Electronics."

These descriptions may work for inventory, but they don't always provide customs officials with enough information to classify goods correctly.

A better description explains what the product is, what it's made of, and how it's used.

The clearer the description, the easier it is to classify and clear.

2. Using the Wrong HS Classification

Tariff classification affects more than duty.

It can determine:

• permits
• inspections
• trade agreement eligibility
• surtaxes
• government reporting requirements

Using an outdated or incorrect HS code can create unnecessary delays and additional costs.

3. Documents That Don't Match

This is one of the easiest mistakes to avoid.

If the commercial invoice says 240 cartons but the packing list says 236, someone has to stop and ask why.

The same applies to:

• weights
• quantities
• product descriptions
• purchase order numbers
• consignee information

Before freight moves, every document should support the next one.

4. Missing Permits or Certificates

Some products require additional documentation before they can enter Canada.

Examples include:

• food products
• pet food
• wood packaging
• products containing animal ingredients
• controlled goods

Waiting until the shipment reaches the border to discover a permit is required almost always results in delays.

5. Waiting Until the Cargo Arrives

Perhaps the biggest mistake isn't on the paperwork at all.

It's waiting.

Documentation reviews are much easier before freight departs than after it reaches the port or border crossing.

That's why we encourage clients to send documents early.

It gives everyone time to fix small issues before they become shipping delays.

What We're Doing for Clients

Documentation review is built into how we work.

Before freight reaches Canada, our team is already reviewing:

• commercial invoices
• packing lists
• HS classifications
• certificates
• permits
• importer information
• routing instructions

If something doesn't line up, we'd rather make one phone call before departure than spend several days correcting it after arrival.

That's time saved for everyone involved.

What Importers Can Do Today

A few simple habits go a long way.

Before your next shipment:

• Review product descriptions for accuracy.
• Confirm HS classifications.
• Make sure quantities match across every document.
• Check whether permits or certificates are required.
• Send documentation to your customs broker before cargo arrives.
• Ask questions early if anything has changed since the previous shipment.

Good documentation doesn't guarantee a shipment will never be examined.

But it dramatically improves the chances that it will move through customs without unnecessary delays.

Why StraitLink Reviews the File Before the Freight

Our job isn't simply to submit paperwork.

It's to review the shipment before it becomes a customs issue.

We've seen what happens when documentation gets reviewed at the border instead of before departure. It's not a quick fix — it's days of back-and-forth while freight sits and costs accumulate.

We'd rather be the phone call that prevents that.

Final Thoughts

Customs documentation isn't exciting.

But it's one of the biggest factors in whether freight moves on schedule.

Most delays don't begin at the border.

They begin days earlier when information is incomplete, inconsistent, or submitted too late.

At StraitLink Global, we believe the best customs clearance starts long before the truck arrives. We review the file, coordinate with everyone involved, and address issues before they disrupt your supply chain.

If your next shipment into Canada is coming up and you want a second set of eyes on the file before it moves — that's exactly the kind of thing we do. Reach out and let's take a look.