International Shipping Customs Forms: How to Complete Labels, Declarations, and Duties Correctly

Overview

An international shipping label usually does more than identify the sender and recipient. It may also include, or be paired with, a customs declaration that tells authorities what is inside the parcel, why it is being sent, and how the contents should be assessed. The exact form, electronic workflow, and supporting information depend on the carrier, origin country, destination country, service, and shipment type.

Start with the carrier’s current label process and the destination country’s import guidance. A postal service, express carrier, or shipping platform may ask for similar information in different fields. If the carrier rejects the label, or if a parcel is held in customs, the issue is often a missing, vague, inconsistent, or restricted shipment detail.

For general parcel tracking after dispatch, keep the tracking number and shipment receipt together. A status such as “in transit” does not necessarily mean customs clearance is complete. If an international package is held in customs, review the carrier’s message first; it may identify a missing document, request payment, or provide instructions for the recipient.

Checklist by scenario

For a personal gift or household shipment

• Confirm the sender’s full name, address, phone number, and email address.
• Enter the recipient’s complete delivery address, including a postal code where used, and a reachable phone number or email if the carrier requests one.
• Describe every item separately and plainly. “Cotton T-shirts,” “used paperback books,” or “ceramic coffee mug” is more useful than “gift,” “clothes,” or “miscellaneous.”
• Record the quantity, weight, and value of each item rather than using one unexplained total.
• Identify the shipment purpose accurately, such as gift, personal effects, return, or sale. Do not select “gift” simply to try to reduce assessment.
• Check whether food, medication, cosmetics, batteries, plants, animal products, or other contents have destination-specific restrictions.

For an online sale or commercial shipment

• Use the buyer’s legal delivery details and include an order or reference number when the carrier or platform supports it.
• List each product and its quantity, material, intended use, and country of origin when requested.
• Use a reasonable transaction value that matches the invoice or order record. Keep a copy of the invoice and the customs data submitted.
• Research the appropriate HS code for the product. Use the destination country’s tariff classification guidance or a qualified customs resource when the classification is uncertain.
• Confirm who may be responsible for duties, taxes, brokerage, or other import charges under the selected delivery arrangement. Explain the likely process to the buyer without promising a specific amount unless it has been calculated through a reliable, current tool.
• Check whether the destination requires an importer number, tax identification, certificate, license, or additional commercial document.

For a return, repair, or replacement

• State that the parcel is a return, repair, warranty replacement, or other accurate purpose.
• Reference the original order, return authorization, or repair case if available.
• Describe the item as the item actually being shipped, not merely as “returned merchandise.”
• Follow the carrier’s instructions for indicating the original export, temporary movement, or returned-goods context. Eligibility for relief from duties or taxes depends on the relevant rules and documentation.
• Ask the recipient or carrier whether additional paperwork is needed before sending the parcel back.

For a shipment containing regulated or easily restricted goods

• Check the carrier’s prohibited and restricted-items list before purchasing postage.
• Pay particular attention to batteries, aerosols, liquids, medicines, food, plants, seeds, animal products, alcohol, valuable goods, and items made from protected materials.
• Do not rely on a generic customs form to authorize a restricted item. Some goods require special packaging, markings, permits, or a service that can legally transport them.
• If the contents are dangerous goods or otherwise regulated, obtain carrier-specific instructions before packing and labeling.

What to double-check

Descriptions and HS codes

A good description answers three questions: What is the item? What is it made of? What is it used for? For example, “women’s cotton knit shirt,” “stainless-steel kitchen spoon,” or “printed paperback novel” gives more context than “merchandise.” Avoid abbreviations that a reviewer may not understand.

HS codes help classify goods for customs purposes, but the correct code can depend on details such as material, construction, function, and destination-country rules. Do not choose a code only because it appears close in a search result. Save the source or classification note used for recurring products, and review it when a product changes or a market changes.

Declared value and currency

Enter the actual or properly supportable value requested by the form, along with the correct currency. The declared value should be consistent with the invoice, order record, insurance selection, and the contents of the parcel. Understating value can create clearance, insurance, or compliance problems; overstating it can create unnecessary costs for the recipient.

Documents and consistency

Compare the customs declaration, shipping label, commercial invoice, packing list, and electronic shipment data. The names, addresses, item quantities, weights, values, and shipment purpose should agree. Remove old labels and barcodes from reused packaging so automated systems do not read conflicting information.

Duties, taxes, and delivery expectations

Import charges and collection procedures vary by destination, goods, value, service, and the arrangement selected at checkout. A shipping cost calculator may estimate postage, but it does not necessarily calculate every import charge. Tell the recipient that customs processing can require action or payment and that delivery timing may change if information is missing.

Common mistakes

• Using a vague description: “Gift,” “sample,” or “parts” does not adequately identify many shipments. Add the product type, material, and use.
• Guessing an HS code: A plausible-looking code may still classify the product incorrectly. Research it carefully and keep a record of the reasoning.
• Declaring a token value: A low value that does not reflect the transaction or contents can lead to questions, delays, or loss of protection.
• Calling a sale a gift: The shipment purpose should reflect the real transaction, even when the recipient is a friend or family member.
• Ignoring destination restrictions: Acceptance by the origin carrier does not guarantee import clearance at the destination.
• Leaving out contact details: A reachable recipient can often respond more quickly when customs or the carrier requests information.
• Assuming the label is the only document: Commercial shipments, controlled goods, returns, and some destinations may need extra documents.
• Using stale product data: Reusing a saved label template without checking weight, value, origin, classification, or destination requirements can create errors.

If a parcel is held in customs, do not create a second shipment immediately. Check the tracking event, carrier notification, and recipient messages first. Gather the invoice, proof of value, product details, and any requested permits or identification. If the carrier sets a response deadline, follow its instructions and retain copies of everything submitted.

When to revisit

Use this checklist before each international shipment, but make a deeper review whenever an underlying detail changes. Revisit it before seasonal shipping periods, when adding a destination, when changing carriers or label software, and when introducing a new product category. It is also worth reviewing after a customs delay, returned parcel, address correction, unexpected import charge, or repeated request for more information.

For a practical pre-shipment workflow:

1. Confirm the destination, recipient contact details, service, and delivery terms.
2. Check the carrier and destination restrictions for every item.
3. Prepare accurate descriptions, quantities, weights, values, currency, origin details, and HS codes where required.
4. Complete the customs declaration and any commercial invoice or supporting document.
5. Compare all documents and electronic fields for consistency.
6. Review who may pay duties, taxes, brokerage, or other import charges.
7. Save the label, declaration, invoice, receipt, and tracking number.
8. After dispatch, monitor international parcel tracking and respond promptly to any carrier or customs request.

For carrier-specific tracking steps, see How to Track a Package Across USPS, UPS, FedEx, and DHL. If you ship regularly, pair this customs checklist with a documented small-business shipping workflow so product data, labels, costs, and delivery alerts remain consistent.