How to review a historical entry
- Identify the entry date, classification, country of origin and customs value.
- Consult the corresponding HTS revision and any applicable legal changes, notices and exclusions for that date.
- Ask a licensed customs broker how the base duty, trade remedies and fees applied to the specific entry.
Why the edition matters
Rates, coverage and exceptions can change during a year. A later schedule or a general country table is not sufficient to determine the duty for an earlier entry.
What records make the review useful?
Gather the entry documents, product specifications, invoice and valuation records, origin information and any exclusion documentation. Use the archive to identify the relevant schedule revision, and check whether legal changes or customs instructions applied on the entry date. A historical calculation can require information beyond the rate shown beside a product description.
Official sources
- Official USITC tariff schedule — check the current schedule, chapter notes, and applicable Chapter 99 provisions.
- USITC: Harmonized Tariff Schedule archive
This guide is general information, not a duty determination. Confirm classification, origin, applicable measures, and the entry date with a licensed customs broker.