Chapter Notes
/ˈtʃæptər ˈnoʊts/
Chapter notes are legally binding provisions associated with a particular HTSUS chapter. They may define terms, include or exclude goods, or direct classification. Under GRI 1, the terms of the headings and any relevant section or chapter notes are applied together; the text and scope of an applicable note—not a universal hierarchy—determine its effect.
In Detail
Chapter notes serve the same range of functions as section notes—exclusion, definition, expansion, and redirection—but apply only within their chapter. Chapter 84 Note 1 excludes a list of textile machinery from Chapter 84's scope (directing those goods to Chapter 84's textile machinery headings instead). Chapter 84 Note 2 defines what constitutes a "machine" for purposes of the chapter. These notes are essential to understanding what each chapter's headings can and cannot classify.
Chapter notes can also create positive, mandatory classifications. Some notes define terms that, when met, require classification within the chapter regardless of competing headings elsewhere in the HTSUS. A chapter note definition of "automatic data processing machines," for example, compels classification of qualifying products in Chapter 84 even if another chapter's heading text fits equally well. The note controls.
Section notes and chapter notes are not applied in a fixed sequential order — GRI 1 directs that heading terms and any relevant section or chapter notes be read together, and it is the specific text and scope of each applicable note, not a universal hierarchy, that determines its effect. In practice, both must always be consulted: a section note can exclude goods that a chapter note would otherwise seem to cover, and a chapter note can narrow or redirect classification within its own scope. Where a section note and a chapter note appear to conflict on the same product, resolving the conflict requires reading both notes' actual text and scope rather than applying a fixed priority rule.
Classification Significance
GRI 1 requires that heading text and any relevant section or chapter notes be applied together, not as a fixed section-then-chapter sequence. A chapter note that excludes a product from a chapter is dispositive within that note's scope — no heading within that chapter applies to the excluded goods. Chapter notes that define terms establish the legal meaning of those terms throughout the chapter's headings, within the scope the note specifies. Missing a chapter note is one of the most common causes of classification error in complex, multi-chapter product categories, and the error can be invisible on the face of the entry until a CBP audit or protest proceeding.
How Kanon Handles This
Kanon's corpus parser processes all HTSUS chapter notes into structured condition trees. During classification, section notes, chapter notes, and heading text are evaluated together as GRI 1 requires, with each applicable note's text and scope assessed on its own terms rather than a fixed priority order — and every condition evaluation is documented with a citation to the specific note and provision in the Classification Support Package.