Published October 13, 2026 · 5 min read

Who this is for: Importers and exporters classifying products for the first time, businesses verifying codes provided by suppliers or freight forwarders, and teams researching products, markets and international trade opportunities.

1. Step 1: Identify The Classification System

The Harmonized System (HS), developed by the World Customs Organization (WCO), provides a common international framework. Its codes contain six digits, while national tariff systems may add more digits.

Choose the system that applies to your shipment:

U.S. imports generally use HTS codes, while U.S. exports use Schedule B numbers where required. These systems serve different purposes and are not interchangeable. For background, see the WCO's HS overview.

2. Step 2: Describe Your Product Precisely

Classification depends on a product's characteristics, not just its commercial name. Before searching, establish:

For example, a rechargeable LED desk lamp differs from a standalone LED bulb or a ceiling light. These distinctions can affect classification.

Use technical specifications, product photographs and supplier datasheets to build an accurate product description.

3. Step 3: Search The Official Tariff Database

Search the relevant government database using your product name and technical description. If the first search fails, try synonyms, describe the product's main function, or browse related tariff headings.

Technical terminology matters. The USITC notes that searching for "phone charger" may not work because the tariff schedule uses more technical language, such as "static converters for telecommunication devices." Its tariff classification FAQ explains how to approach these searches.

Treat search results as candidates, not confirmed classifications.

4. Step 4: Compare Codes And Read The Legal Notes

Compare the full descriptions of your candidate codes. Then review the applicable Section Notes, Chapter Notes and classification rules, which define what each heading includes or excludes.

Pay particular attention to products with multiple functions, mixed materials, accessories or retail sets. Their components and construction may affect the result.

For U.S. imports, the USITC recommends identifying the relevant four-digit heading before narrowing the search to more specific subheadings.

Before proceeding, make sure you can explain why the selected heading fits your product better than the alternatives.

5. Step 5: Confirm The National Code And Duty Treatment

Once you identify the relevant six-digit HS subheading, confirm the full code required by the destination country.

Check the current tariff schedule for the applicable duty rate, preferential tariff treatment, additional duties and relevant restrictions. The final duty treatment may also depend on the product's country of origin and the destination market.

Never assume a supplier's code is correct for your shipment. Verify the national classification before filing the customs declaration.

6. Step 6: Check Customs Rulings And Document Your Decision

If several codes appear plausible, search for previous rulings involving comparable products. For U.S. imports, the Customs Rulings Online Search System (CROSS) provides access to published U.S. Customs and Border Protection rulings.

Compare the product's function, materials and construction with the facts in each ruling. A similar name alone does not establish that the same classification applies.

If uncertainty remains or the financial impact is significant, consult a qualified customs broker or the relevant customs authority. U.S. importers can also review CBP's electronic rulings service.

Keep a record of the product specifications, candidate codes, legal notes and reasons for your decision. This makes future reviews and repeat shipments easier to manage.

7. Go Beyond HS Code Lookup With Topease

Once you have established your product's classification, trade data can help you identify markets and companies importing or exporting similar products.

Topease E-Platform is a global import and export trade data platform that helps businesses analyze international trade activity and identify potential buyers.

With Global Trade Pal, you can search using HS codes and product keywords, examine import and export activity across markets, and identify companies involved in relevant transactions. GTminds, Topease's AI trade agent, supports buyer discovery, company due diligence, contact research and sales outreach preparation.

For example, an exporter of rechargeable LED lamps can use trade data to investigate importing markets, find companies trading similar products and prioritize potential buyers for further research.

8. Common HS Code Classification Mistakes

9. Conclusion

Finding the correct HS code requires the right classification system, an accurate product description and a review of official tariff rules. Confirm the full national code before shipping, and consult customs rulings or a qualified professional when the classification remains uncertain.

With the classification established, trade data can help you research target markets and identify potential international buyers.