Check whether an HS code is structurally valid, complete enough for manual verification, and ready for official tariff lookup. Numeric format, code length, 6-digit international heading, and national extension review.
Run the tool to see an itemized result. No signup is required and calculator inputs are processed in the browser unless you submit a correction form.
An HS code is structurally valid when its digits, length, and national extension match the destination market convention. The first 6 digits are internationally harmonized; national extensions after 6 digits vary by market. This tool does not guarantee the code is active or correct.
Validation steps: strip non-digits, count digits, verify 6-digit international heading, note destination extension (8/10 digit US HTS, 10 digit EU TARIC, 10 digit UK, 10 digit CN), flag incomplete codes, surface manual verification checklist and official lookup links.
Use this validator before official tariff lookup when you need a structural review of an HS, HTS, TARIC, or CN code candidate.
This is a structural validator. Confirm code activity and classification in official tariff databases before using the code on commercial invoices or customs declarations.
Official source notes and calculator assumptions should be reviewed before shipment, label purchase, invoice filing, or customs entry.
Validation steps: strip non-digits, count digits, verify 6-digit international heading, note destination extension (8/10 digit US HTS, 10 digit EU TARIC, 10 digit UK, 10 digit CN), flag incomplete codes, surface manual verification checklist and official lookup links.
A US HTS code 6109.10.0012 passes length and 6-digit heading checks; a 4-digit code 6109 fails the 6-digit international minimum; a 10-digit code submitted against the EU market should be checked against TARIC before use.
This is a structural validator. Confirm code activity and classification in official tariff databases before using the code on commercial invoices or customs declarations.
This tool provides planning estimates and document preparation support only. Confirm final classifications, duty treatment, and filing requirements with official tariff databases or qualified trade professionals.
It must be numeric, contain at least 6 digits for the international heading, and follow the destination market extension convention (8 or 10 digits in many systems).
No. Validation checks structure. Final classification should be confirmed against official tariff databases or qualified trade professionals.
The first 6 digits are internationally harmonized; national authorities add extra digits for duty rates, statistical reporting, and regulatory measures.
It is not a complete HS code. Treat it as a chapter or heading reference and search for a longer candidate.
No. It is a candidate review aid only.
Use the AI HS Code Finder, CSV Catalog Checker, and Import Duty Calculator to prepare customs data before shipping.
