HS codes: how to classify your product

Start with the product, not a convenient code

An HS code identifies a goods classification within the Harmonized System developed by the World Customs Organization, or WCO. Customs authorities use classification as part of their treatment of imported and exported goods.

Choosing a code requires understanding the actual product. A marketing description, familiar trade name or code copied from another supplier may not contain enough detail. Start with what the goods are, how they are made and what they do.

ATP’s catalogue sector and sub-category are discovery tools, not customs classifications. Selecting a portal category does not establish an HS code or confirm that a product can enter a destination market.

Understand the code structure

The international HS classification is expressed at six digits. The first two identify the chapter, the first four identify the heading, and six digits identify the subheading. National or regional tariffs can extend the code with further digits.

Confirm the full code required by the destination’s current tariff. Do not assume the export-country code, especially its additional digits, can be copied unchanged into the import declaration.

Classification also depends on the applicable edition and legal text. The WCO provides headings, notes, interpretation rules and supporting classification resources. A search result alone should not replace those materials or the importing customs authority’s decision.

Build a classification information sheet

Gather the facts that distinguish your product:

• Product name and detailed description.
• Main materials or ingredients and relevant proportions.
• Principal function and intended use.
• Manufacturing or processing method where relevant.
• Whether it is complete, unfinished, a part or an accessory.
• Technical drawings, photographs and specifications.
• How it is packaged, combined or presented for shipment.

For mixtures, sets and components, explain the contents and their relationship. For a machine, identify its function rather than only its model number. Ask the manufacturer for technical information if a trading company cannot supply it.

Research and test the proposed heading

Use the official tariff and supporting notes. Compare headings that might reasonably describe the goods, then check exclusions and conditions. Do not choose a code because its duty rate appears more attractive.

Record why a heading was considered and why alternatives were rejected. A short written explanation helps your customs adviser review the reasoning and makes future orders easier to check.

If the supplier suggests a code, request its basis. The suggestion can be useful evidence, but it is not proof that the destination customs authority will accept it. Avoid printing an unconfirmed code as an authoritative fact in a product listing.

Obtain a qualified review when uncertain

Ask a customs broker or classification specialist to review the product information against the destination tariff. Where available and appropriate, ask the relevant customs authority about an advance or binding ruling procedure.

The availability, application route, legal effect and processing time of a ruling vary and are [TO CONFIRM] for your destination. Do not describe an informal supplier opinion as an official ruling.

Confirm who is responsible for the declaration and how classification questions will be resolved before dispatch. A different classification may affect cost assumptions and documentation, so leave enough time to address uncertainty.

Keep records and revisit changes

Maintain the product sheet, classification reasoning and any advice or ruling with the order records. Keep the description consistent across the quotation, invoice and packing information.

Review the classification when materials, function, packaging or the applicable tariff change. Similar-looking products can require different treatment. Do not assume an earlier shipment’s clearance automatically settles every future shipment.

ATP does not provide customs classification or handle clearance. Buyers and suppliers agree trade terms directly, while customs matters should be checked with the relevant authority or advisers.

Sources and further reading

See the WCO Harmonized System FAQ and WCO nomenclature resources. Sources checked on 30 September 2026. Destination-specific tariff rates and code extensions are [TO CONFIRM].

Next step: Include accurate product specifications in your buying request.