HS Code

The Harmonized System (HS) Code is the international numeric classification of traded products, maintained by the World Customs Organization (WCO). It is the foundation of every customs entry, trade statistic, tariff schedule and free-trade agreement worldwide.

The HS structure has 6 digits internationally standardised, then countries add their own digits for national tariff and statistical detail. For example, the EU uses 8-digit CN codes, the US uses 10-digit HTS codes, India uses 8-digit HSN codes. The first 6 digits are the same everywhere — chapters (e.g., 84 = nuclear reactors, boilers, machinery), headings (e.g., 8471 = automatic data processing machines), and sub-headings (e.g., 8471.30 = portable ADP machines).

Correct HS classification is the most consequential single decision in customs filing: it determines the duty rate, controls regulatory requirements (DG, FDA, agriculture), and triggers preferential treatment under FTAs. Misclassification penalties can be severe.