The Classification Challenge

Every product crossing an international border must be assigned a tariff classification code — typically a 6-10 digit Harmonized System (HS) or Harmonized Tariff Schedule (HTS) code. This code determines the duty rate, whether the product qualifies for free trade agreement preferences, and whether export controls apply.

The problem is complexity. The US HTS contains over 17,000 line items. Classification requires understanding both the product's material composition, function, and end use AND the legal interpretation of tariff headings, section notes, and classification rules (General Rules of Interpretation). It's part engineering, part legal analysis.

Most companies classify products when they are first imported and never revisit the classification unless customs challenges it. This creates two types of costly errors:

• Overclassification — products classified in higher-duty categories than necessary, resulting in excess duty payments that accumulate silently over years
• Underclassification — products classified in lower-duty categories, creating compliance exposure that can trigger penalties, interest, and audit liability going back 5 years