Step-by-Step Customs Compliance Checklist to Prevent Shipment Delays

Every business that ships across a border has felt that gut‑wrenching moment when a container sits at the dock, paperwork in hand, while the clock ticks. One missed code or an unchecked box can turn a smooth delivery into a costly hold‑up. That’s why a solid compliance checklist isn’t just nice to have—it’s the difference between a happy customer and a frantic night in the office.

Why compliance matters now

Global trade has never been more fast‑paced. E‑commerce platforms push for same‑day delivery, and carriers are squeezing tighter schedules. At the same time, customs agencies are tightening enforcement, using automated scans that flag even tiny errors. In short, the margin for mistake is shrinking, and the cost of a delay is growing. A clear, step‑by‑step checklist keeps you ahead of the curve and lets you focus on moving goods, not paperwork.

The checklist – broken down

Below is the exact list I use with my clients at Borderwise Brokerage. Follow it in order, and you’ll cut the odds of a hold‑up dramatically.

1. Know your product inside and out

What to do: Write a short description of the item, its material, function, and any special features.

Why it matters: Customs looks for the exact nature of the product to apply the right tariff and safety rules. A vague description like “electronic device” can trigger a review. I once helped a client ship a “smart thermostat” that actually contained a lithium battery. The battery flag caused a three‑day delay until we clarified the classification.

2. Classify with the correct HS code

What to do: Use the Harmonized System (HS) database to find the eight‑digit code that matches your product description. Double‑check against the latest updates – codes can change every year.

Why it matters: The HS code determines duty rates, taxes, and any import restrictions. A single digit off can mean a 0% duty suddenly jumps to 20%, or worse, a prohibited entry. Keep a spreadsheet of the codes you use most often and note the source (WCO, national tariff schedule, etc.).

3. Verify licensing and permits

What to do: Identify if your product needs an import license, export permit, or any special certificate (e.g., phytosanitary, FCC, CE).

Why it matters: Some items – chemicals, medical devices, or wildlife products – cannot cross borders without the right paperwork. Missing a permit is a classic cause of detention. I still remember a shipment of coffee beans that got held because the phytosanitary certificate was dated a day late. The beans sat in a cold warehouse for 48 hours before we could get a new one.

4. Check trade agreements and preferential rates

What to do: Look up any free‑trade agreements (FTAs) that apply between the exporting and importing countries. If eligible, gather the proof of origin documents (like a supplier’s declaration).

Why it matters: Proper use of an FTA can cut duties by half or more. But you must prove the goods qualify; otherwise customs will reject the claim and charge full duty plus a penalty. I keep a quick reference guide for the top 10 agreements my clients use most often.

5. Prepare accurate commercial invoice

What to do: Include: seller and buyer details, full product description, HS code, unit price, total value, currency, Incoterms, and country of origin.

Why it matters: The invoice is the primary document customs uses to assess duty. Errors in value or description raise red flags. A friend of mine once listed the value in euros on a US import invoice – customs flagged it, and the shipment was delayed while we corrected the currency.

6. Pack and label correctly

What to do: Ensure each package has a legible label with the HS code, country of origin, and any required safety symbols (e.g., hazardous material signs).

Why it matters: Improper labeling can lead to a physical inspection, which adds time. I’ve seen a case where a missing “flammable” label on a small batch of cleaning solvent caused a full container inspection, adding a week to the timeline.

7. Choose the right Incoterm

What to do: Decide which Incoterm (EXW, FOB, DAP, DDP, etc.) applies to your transaction and make sure it’s reflected in the contract and invoice.

Why it matters: Incoterms define who pays duties and who handles customs clearance. Misunderstanding can leave you paying unexpected fees at the border. I always remind clients that DDP means they are on the hook for everything once the goods arrive.

8. File the entry with the correct customs broker

What to do: Submit all documents to your broker well before the vessel’s arrival – ideally 24‑48 hours ahead. Include the bill of lading, packing list, certificates, and any special permits.

Why it matters: Early filing gives the broker time to spot issues and request clarifications before the goods hit the port. Rushing the filing often leads to last‑minute errors. At Borderwise Brokerage we have a “two‑hour rule”: if anything looks off, we call the shipper immediately.

9. Pay duties and taxes on time

What to do: Once the entry is accepted, settle any duties, taxes, or fees promptly. Keep receipts for record‑keeping.

Why it matters: Late payment can result in penalties and hold the shipment in customs. Some countries also charge interest on overdue amounts. A quick tip: set up an automatic payment reminder in your accounting software.

10. Keep records for at least five years

What to do: Store all customs documents, invoices, and correspondence in an organized digital folder.

Why it matters: Customs audits can happen years later. Having a clean record saves you from fines and the headache of digging through old paperwork. I keep a master folder on my laptop titled “Customs Records” and back it up to the cloud every month.

Quick reference cheat sheet

• Product description: Clear, detailed, no jargon.
• HS code: Verify with latest tariff schedule.
• Licenses/permits: Check before shipping.
• FTAs: Confirm eligibility, gather origin proof.
• Invoice: Full details, correct currency, Incoterm.
• Packing/labeling: Match HS code, safety symbols.
• Incoterm: Align with contract.
• Broker filing: Early, double‑check.
• Payment: On time, keep receipts.
• Records: Store 5+ years, digital backup.

Following these steps has saved my clients countless hours and dollars. The first time I missed a single HS digit, the shipment was delayed by three days and the client lost a key retailer contract. Since then, I’ve turned the checklist into a habit, and the results speak for themselves: smoother moves, happier customers, and fewer surprise fees.

If you’re new to international shipping, start with the first three steps and build from there. If you already have a process, compare it against this list and tighten any loose ends. Customs may seem like a maze, but with a clear path, you’ll find the way out faster than you think.