International Shipping and Customs Guide: Documents, Duties, and Delivery Delays

Overview

An international shipment passes through more steps than a domestic parcel. The sender must provide an accurate address, a clear description of the contents, a realistic value, and the documents required by the carrier and destination country. Customs authorities use that information to assess whether goods can enter, whether duties or taxes apply, and whether additional information is needed.

Requirements vary by origin, destination, contents, service level, and shipment purpose. A gift, a sale, a return, a sample, and a personal shipment may require different descriptions or supporting records. Always check the current instructions from the carrier and the relevant postal or customs authority before mailing.

For the tracking side, keep the tracking number, carrier name, shipment date, recipient contact details, and a copy of the label or receipt together. International parcel tracking may show fewer scans while a parcel is moving between countries. A shipment can also change carriers or postal networks after arrival, so confirm which carrier currently has possession before assuming that an apparently quiet tracking history means the parcel is lost. For help identifying a number or carrier, see How to Find a Tracking Number and Identify the Right Carrier.

Checklist by scenario

Before sending a sale or commercial shipment

• Confirm the destination: Check the country, region, postal code, city, street, building number, and recipient phone or email if the service requests it. Use the destination country's preferred address format.
• Check whether the item is allowed: Review carrier restrictions and destination-country rules for food, medicines, cosmetics, batteries, liquids, plants, animal products, electronics, and other regulated goods.
• Choose a precise description: Write what the item is, what it is made of, and what it is used for. “Goods,” “parts,” or “gift” alone may not provide enough information for customs processing.
• Assign the appropriate HS code: Use the Harmonized System classification that best matches the product. If you are unsure, consult the applicable tariff guidance or a qualified customs professional rather than guessing.
• Prepare the commercial invoice: Include the sender and recipient, invoice or reference number, item descriptions, quantities, unit and total values, currency, country of origin, and the agreed delivery terms when required by the carrier.
• State the transaction honestly: A gift, return, sale, sample, or repair should be identified accurately. Marking a sale as a gift or understating the value can create delays, disputes, or liability.
• Estimate the full cost: Use a shipping calculator for postage, then account for possible duties, taxes, brokerage, insurance, and return costs. Clarify in advance who is responsible for import charges.
• Save records: Keep the label, invoice, customs declaration, proof of value, payment receipt, and product details until delivery and any return or claim window has passed.

For a personal parcel or gift

• List every item rather than describing the contents as “miscellaneous.”
• Use a reasonable value based on the contents and keep evidence of that value if it may be requested.
• Check rules for food, medication, supplements, used clothing, batteries, and handmade or animal-derived goods.
• Tell the recipient that import duties or taxes may be assessed and that the carrier may request payment or information.
• Share the tracking number and a copy of the shipment details so the recipient can respond quickly to a customs or delivery notice.

For a return, repair, or replacement

• Use the original order or return reference and describe why the parcel is moving across the border.
• Do not automatically copy the original shipment's customs information if the contents, value, or purpose has changed.
• Ask the seller or carrier whether a return authorization, special label, or proof of prior export is needed.
• Keep photos of the item, packaging, and label before handing the parcel to the carrier.
• Confirm who is responsible for duties, brokerage, and return postage if the parcel is refused or sent back.

Small businesses can integrate these steps into a repeatable dispatch process. The small business shipping workflow guide covers the broader sequence from address checks to labels, tracking, and returns.

When tracking shows a delay or customs hold

1. Copy the latest tracking message exactly and note the date, location, and carrier.
2. Check the carrier's official tracking page and, when appropriate, the destination postal operator's tracking system.
3. Look for a request for documents, payment, identification, or recipient instructions.
4. Contact the carrier using the tracking number and ask what specific action is required, not simply whether the parcel is delayed.
5. Ask the recipient to check email, text messages, voicemail, spam folders, and local delivery notices.
6. Keep a record of every contact, including case numbers, deadlines, and documents submitted.

A customs hold does not by itself prove that a parcel is lost. It may mean that information is incomplete, a charge is awaiting payment, an inspection is in progress, or the carrier is waiting for instructions. For a fuller explanation of possible statuses, use the package tracking status meanings guide and customs delay troubleshooting guide.

What to double-check

Customs forms and the commercial invoice

Make sure the information on the customs declaration, label, electronic shipment record, and commercial invoice agrees. Differences in value, quantity, description, or recipient details can trigger a request for clarification. A commercial invoice is generally used for commercial shipments, while postal services may also require a customs declaration for other international parcels. The exact form depends on the carrier, service, origin, destination, and contents. Review the customs declaration forms guide before completing the paperwork.

HS codes and country of origin

An HS code classifies the product for customs purposes; it is not the same as a store SKU, model number, or marketing category. Describe the item first, then select the most suitable classification. Country of origin usually refers to where the product was made or substantially produced, not necessarily where it was purchased or shipped from. If a product contains multiple materials or has a complicated manufacturing history, get specialist guidance.

Duties, taxes, and delivery charges

Import charges can depend on the item's classification, declared value, destination rules, exemptions, and the delivery terms selected. The recipient may be asked to pay before delivery, or the sender may have arranged another billing method. Do not promise that a parcel will be delivered without extra charges unless the selected service and terms clearly provide for that outcome. Compare the likely total cost, not postage alone, using the international shipping cost and delivery time guide.

Packaging and insurance

Use packaging suited to the item's weight, fragility, moisture sensitivity, and journey length. Place documents where the carrier permits and retain digital copies. Insurance or declared-value protection may have exclusions and documentation requirements, so check the policy before shipping rather than after a loss. The shipping insurance guide explains the questions to ask about coverage.

Common mistakes

• Using a vague description: Customs reviewers need a useful description, not an internal product nickname.
• Understating value: An inaccurate value can affect assessment, insurance, and any claim.
• Ignoring restricted-item rules: A product accepted by one carrier or country may require special handling elsewhere.
• Assuming a tracking gap means loss: International handoffs can create periods with limited or delayed scans.
• Leaving the recipient unprepared: A parcel may wait when the recipient does not recognize a customs message or payment request.
• Relying on an old label: Addresses, service options, forms, and carrier systems can change. Generate the label through the current carrier workflow and verify it before dispatch.
• Discarding documents too early: Keep records until delivery, payment disputes, returns, and claims are resolved.

When printing at home, compare the final label with the carrier's electronic shipment record and make sure every barcode is clear. See how to print international-capable shipping labels at home for a practical label workflow.

When to revisit

Review this checklist before each new destination, product category, carrier service, or selling season. It is especially useful before holiday volume, a product launch, a marketplace expansion, or a change in fulfillment location. Revisit it whenever a carrier changes its label or tracking system, a destination updates restricted-item rules, a customs form is redesigned, or a shipment begins showing repeated delays.

For a quick preparation worksheet, copy the following into your shipping record:

1. Origin and destination country:
2. Sender and recipient address verified:
3. Recipient contact details confirmed:
4. Item description and quantity:
5. HS code checked:
6. Country of origin recorded:
7. Declared value and currency:
8. Commercial invoice or customs declaration completed:
9. Restricted-item review completed:
10. Duties, taxes, and delivery charges explained:
11. Tracking number and carrier saved:
12. Insurance or declared-value decision recorded:
13. Return and customs-delay contact plan:

Complete the worksheet, save the supporting documents, and share the tracking details with the recipient. A few minutes spent checking the shipment before handoff can make international parcel tracking clearer and give both sides a faster response when customs or delivery questions arise.