Every product crossing a border needs a Harmonized System (HS) code. Get it wrong and you overpay duties, face delays, or trigger audits. Most software treats classification like search — match keywords in a description and return the top hit. Customs officers don't work that way, and neither does Nexim.
The hierarchy matters
HS classification is a tree, not a flat index:
- Section — broad product families (e.g. textiles, machinery)
- Chapter — two-digit groupings within a section
- Heading — four-digit categories
- Subheading — six-digit international codes
- National line — country-specific extensions (e.g. 8–10 digits)
At each level, legal notes and section/chapter exclusions eliminate branches. A leather handbag and a plastic handbag share words in a description but land in different chapters.
Rules, not just similarity
Nexim applies General Rules of Interpretation (GRI) — the same framework WCO member states use. Material composition, essential character, and intended use all factor in before a code is proposed.
Keyword search can't explain why a code was chosen. Hierarchical classification produces a path you can defend in an audit.
Confidence at every stage
Rather than a single opaque score, Nexim reports confidence at each narrowing step. When ambiguity remains between two subheadings, the system surfaces both options with the regulatory basis for each.
Practical impact
A regional importer we work with reduced manual review time by 60% after switching from spreadsheet lookups to hierarchical classification. Reviewers stopped second-guessing keyword matches and started validating structured reasoning instead.
If your team still classifies by search box, it's worth asking whether your tooling matches how customs actually thinks about products.