Also called: Harmonized System code, tariff code
What an HS code means
The Harmonized System is a structured nomenclature: chapters, headings and subheadings. The first six digits are the international core used by most customs administrations that apply the WCO system. Extra digits (often 8 or 10) are national. Two countries can share the six-digit code and still differ on the national tail, duty rate and licence list.
Why classification comes before later checks
Later checks rest on classification. Sanctions and export-control questions are different for a polymer, a fertilizer grade, a steel product or a foodstuff. A wrong heading can mean the wrong licence, the wrong duty, or a refusal to ship.
Banks issuing letters of credit also pick up the description and sometimes the code. A mismatch between contract, invoice and LC is a documentation problem, not a shipping problem.
What it covers
The identity of the goods for customs and regulatory purposes: what the product is, not the commercial nickname. “PVC” or “urea” is a start; the heading depends on form, composition and sometimes use.
What it does not cover
An HS code is not a quality grade. It does not prove origin. It does not replace a COA or a phytosanitary certificate. It is not a sanctions clearance.
When it is required
TTC’s process requires goods classification and an HS code before later screening steps. The code used for quotation should be reviewed again if the specification changes.
Common mistakes
Copying a competitor’s code without reading the heading notes. Using a six-digit code as if it were a national 10-digit tariff line. Changing the commercial description on the invoice so it no longer matches the classified goods. Leaving classification until the vessel is booked.
TTC uses these terms in its RFQ and transaction process. Nothing on this page is a licence, a certification, a guarantee of clearance, or a substitute for the documents and clauses of a specific contract.