HTS Code vs HS Code

The HS (Harmonized System) is the international 6-digit product standard; countries add their own digits. The US HTS uses 10 digits — the first 6 are shared internationally, the last 4 are US-specific and set the exact duty. So two countries' codes match for 6 digits but can diverge after.

Always classify to the 10-digit HTS for the actual US rate, using the official USITC search.