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Classification

What is Subheading?

The 6-digit level of the Harmonized System that provides more specific classification than the 4-digit heading. In the context of U.S. customs and tariff recovery, understanding subheading is essential for navigating the CAPE refund process and ensuring accurate duty assessment.

Definition

A subheading is the 6-digit level of the Harmonized System classification. The first 4 digits form the heading (identifying the broad product category), and digits 5-6 provide more specific subdivision. For example, heading 8471 covers 'automatic data-processing machines,' while subheading 8471.30 narrows to 'portable digital automatic data-processing machines.' The 6-digit subheading is the international classification level — shared by all countries using the Harmonized System. Beyond 6 digits, each country adds its own subdivisions (the U.S. adds 4 more digits for the full 10-digit HTS code).

How Subheading Relates to Tariff Refunds

Per CBP Ruling HQ H350722, AI classification tools (including Tariffi's analysis) may classify goods at the 6-digit HS subheading level. The full 10-digit U.S. HTS statistical suffix must be determined by the licensed customs broker. This distinction is important for CAPE claims: the subheading determines the general product family, while the full HTS code determines the exact duty rate and program eligibility.

Example

A product is classified at subheading 9503.00 (toys and models). The U.S. adds digits to create 9503.00.0073 (construction toy sets). The subheading is internationally recognized; the full 10-digit code is U.S.-specific and determines the exact duty rate.

Frequently Asked Questions

Is the 6-digit subheading the same worldwide?
Yes. All 200+ countries using the Harmonized System share the same 6-digit classification. National variations begin at digit 7.
Can Tariffi classify beyond the 6-digit level?
Per CBP Ruling HQ H350722, the 10-digit U.S. statistical suffix is the licensed customs broker's determination. Tariffi classifies at the 6-digit level and the broker confirms the full code.

Related Terms

HTS CodeHarmonized Tariff Schedule code — the 10-digit number that determines the duty rate on imported goods in the U.S.Harmonized SystemInternational nomenclature for classifying traded products, maintained by the World Customs Organization and used by over 200 countries.ClassificationThe process of assigning an HTS code to imported goods to determine the applicable duty rate.Chapter NotesExplanatory notes within HTS chapters that define scope, exclusions, and classification rules for product categories.General Rules of InterpretationThe six GRI rules that govern how goods are classified under the Harmonized System when multiple headings could apply.

Legal References

  • CBP Ruling HQ H350722 — AI Classification Scope
  • GRI Rule 6 — Classification at Subheading Level

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