Answer first: For an import duty and HS code guide, identify the product material, function, use, origin, value, and documentation, then check the official tariff schedule and customs guidance before relying on a supplier, marketplace, or freight quote.
Last checked: June 16, 2026.
Quick check
| Check | Why it matters | Where to verify |
|---|---|---|
| Product description | Small differences in material or function can change classification. | Invoice, spec sheet, tariff notes |
| HS or HTS code | The code drives duty, reporting, and sometimes restrictions. | Official tariff schedule |
| Country of origin | Duty can depend on origin and trade measures. | Customs documents |
| Customs value | Duty estimates need value, freight, insurance, and transaction details. | Customs guidance |
| Restrictions or PGA rules | Some goods need agency checks beyond duty. | Customs and partner agencies |
Step-by-step verification
- Collect the product spec sheet, material, intended use, and supplier invoice details.
- Search the official tariff schedule rather than copying a marketplace code.
- Read section and chapter notes because code wording can be technical.
- Check origin, valuation, free-trade preference, and special duty measures.
- Ask a customs broker or customs authority when classification affects cost or compliance.
What can differ
- The first six HS digits are international, but country-level tariff digits can differ.
- Supplier-provided codes can be wrong or too generic.
- Classification guidance is not the same as a binding ruling.
Official sources
Use official or primary sources before relying on ads, directories, old forum posts, or copied summaries.
| Official source | URL |
|---|---|
| USITC Harmonized Tariff Schedule | https://www.usitc.gov/harmonized_tariff_information |
| U.S. CBP importing basics | https://www.cbp.gov/trade/basic-import-export/importer-exporter-tips |
| UK trade tariff | https://www.gov.uk/trade-tariff |
Related checks
- NAICS Code Lookup for Grants and Certifications
- Business Name Availability Check
- Sales Tax Permit Guide
FAQ
Can I use a supplier's HS code?
Use it as a clue, not proof. Verify against the official tariff schedule and product facts.
Is HS code the same in every country?
The first six digits are harmonized internationally, but national tariff codes and duty rates can differ.
Does this calculate the final landed cost?
No. Duty is only one part. Freight, insurance, fees, taxes, and compliance costs can also apply.
Note: Business Support Check is not a government agency, regulator, airline, manufacturer, lender, tax adviser, legal adviser, or official registry. This guide explains how to check official sources before acting.