Official-source tariff data · 2026 HTS Rev 19 · synced · Operational
SkuWatch tariff intelligence
Research

Official sources, connected to the calculation.

SkuWatch keeps official citations on the HTS, change, measure, and calculation where they are used. This page explains which authority to open next.

Field-level authority

Open the agency responsible for the fact

No single source controls every tariff field. If evidence conflicts or is incomplete, SkuWatch reports review rather than silently choosing a rate.

USITC

Current HTS hierarchy, tariff text, rate columns, units, and Chapter 99 provisions.

Open official HTS ↗

USTR

Section 301 actions, modifications, exclusions, and other trade-action evidence it issues.

Open USTR ↗

CBP

Entry administration, user fees, trade-program procedure, and operational guidance.

Open CBP Trade ↗

Federal Register

Published legal notices, action text, effective dates, and amendments from issuing agencies.

Open Federal Register ↗

Measure archive

Every action record carries source metadata and an explicit source link.

Open measures

Monitor

Pending and confirmed actions with source context.

Open monitor

Changes

Snapshot changes grouped by status and basis.

Open changes

Methodology

See ingestion, normalization, validation, fail-closed behavior, and the correction policy.

Read methodology
Catalog and API planning

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