Last in Numerical Order — GRI 3(c)
GRI 3(c) is the final tiebreaker under GRI 3: when goods cannot be classified by relative specificity (GRI 3(a)) or by essential character (GRI 3(b)), they are classified under the heading that appears last in numerical order among those that equally merit consideration. GRI 3(c) is rarely invoked and its application signals that the classification is among the most analytically uncertain in the HTSUS.
In Detail
GRI 3(c) applies only after GRI 3(a) and GRI 3(b) have both been applied and failed to yield a single heading. The rule instructs that among the headings that “equally merit consideration” — those that survived the GRI 3(a) and GRI 3(b) analyses without being eliminated — the one that appears last in numerical order in the HTSUS is selected. The mechanical simplicity of this rule belies the analytical rigor required to correctly reach it.
The phrase “equally merit consideration” is the operative threshold. Only headings that remained live candidates after GRI 3(a) and GRI 3(b) are eligible for the GRI 3(c) tiebreaker. If a heading was eliminated by the specificity analysis at GRI 3(a), it does not “equally merit consideration” and does not participate in the GRI 3(c) determination. Misidentifying which headings are still in play is a common error in GRI 3(c) analysis.
GRI 3(c) is sometimes misused as a shortcut when classification is complex or uncertain. It is not a default for difficult cases. The rule requires that GRI 3(a) and GRI 3(b) have been genuinely applied and documented as failing. Using GRI 3(c) without completing the prior GRI 3 analysis produces a legally deficient classification record regardless of whether the final code is defensible on other grounds. A classification that genuinely reaches GRI 3(c) is a strong candidate for a CBP binding ruling.
Classification Significance
Although rare in practice, GRI 3(c) appears in CBP binding rulings and Court of International Trade decisions for product types where component-based or material-based classification genuinely yields equal weight for two or more headings. A well-documented GRI 3(c) classification requires a complete GRI 3(a) and GRI 3(b) record and is a strong candidate for advance ruling treatment to provide importation certainty.
How Kanon Handles This
Kanon applies GRI 3(c) only after GRI 3(a) and GRI 3(b) have been fully applied and documented as insufficient to resolve classification. When GRI 3(c) is invoked, the Classification Support Package clearly identifies the operative rule, records which headings equally merited consideration, and explains why each prior GRI 3 sub-rule failed. A GRI 3(c) resolution is flagged for heightened review.