Statistical Suffix
The statistical suffix consists of digits 9 and 10 of a 10-digit HTS code and is used for trade statistics collection by CBP and the U.S. Census Bureau. It does not affect the base duty rate—which is determined at the 8-digit level—but it is required on formal entry documents, and in certain trade remedy contexts the 10-digit code determines whether an overlay duty applies.
In Detail
When an HTS code is reported on a formal customs entry, the complete 10-digit code is required. The first 8 digits represent the legally operative classification that determines duty rates and trade remedy applicability. Digits 9–10 are statistical additions that subdivide an 8-digit classification for data collection purposes—distinguishing, for example, between different size ranges, configurations, or end uses within the same 8-digit category.
Statistical suffixes are assigned by the USITC in coordination with CBP and Census. For most products, the suffix is "00," indicating a single undifferentiated subheading with no further breakdown. In categories where the government tracks product distinctions at finer granularity, numbered suffixes like "10," "20," "30" represent specific subdivisions. The USITC publishes the full list of valid statistical suffixes for each 8-digit code in the annual HTSUS update.
The statistical suffix gains legal significance in categories subject to Antidumping and Countervailing Duty (AD/CVD) orders or USTR exclusions that are scoped to specific 10-digit codes. In those situations, two goods sharing the same 8-digit base code but carrying different statistical suffixes may have different trade remedy exposure. Selecting the wrong suffix in these categories is not merely a reporting error—it affects the total landed duty cost calculation.
Classification Significance
For most products, the statistical suffix is a reporting formality that follows automatically from the 8-digit classification. But in categories subject to AD/CVD orders or USTR exclusions scoped to specific 10-digit codes, the statistical suffix carries legal consequence. Classifiers working in these categories must verify the full 10-digit code, not just the 8-digit base. CBP has broad authority to question incorrect 10-digit reporting on entry summaries.
How Kanon Handles This
Kanon's classification output includes the full 10-digit HTS code—including the correct statistical suffix—along with the 8-digit base classification. Where trade remedy applicability turns on the 10-digit code, this distinction is flagged explicitly in the Classification Support Package.